Talk:MPEG-2

From Wikipedia, the free encyclopedia
Jump to: navigation, search
WikiProject Computing (Rated C-class)
WikiProject icon This article is within the scope of WikiProject Computing, a collaborative effort to improve the coverage of computers, computing, and information technology on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.
C-Class article C  This article has been rated as C-Class on the project's quality scale.
 ???  This article has not yet received a rating on the project's importance scale.
 

Patents[edit]

When do the patents expire? Great job on the list of patent holders, but does anyone have the list of actual For Part 1 and 2 you can look into the ITU-T Patent Database, since they both parts are common texts. They are known in the ITU-T side as H.222.0 and H.262, respectively. Here is the URL for the database:

http://itu.int/ITU-T/dbase/patent

2020s. US 7,020,204 doesn't expire until at least 2021. There is now a list of US patents in the article, so feel free to check more closely. Jrincayc (talk) 15:32, 1 June 2008 (UTC)

Okay, using this program: (Program snipped, new version put on my user page at User:Jrincayc/Patent_utils)

piped through sort -n got the following list so the answer is July 2023, unless some of the patents don't count Jrincayc (talk) 03:40, 6 June 2008 (UTC):

Back in the early 90's, the rule for patent life was basically the later of 20 years from date of filing or 17 from the date of issue. Some patents, however are continuations or divisions of other patents. A continuation is where the assignee files another set of claims using the original disclosure at some point during the patent examination, where as a divsional is where an application is split into two sets of claims related to different parts of the invention which each get seperate examinations. The example above of US7,020,204 is actually a division of US6,563,875 which itself is a continuation of another application which is based on a foreign patent application filed back in 1988 and therefore expires well before 2022. The expiration of continuations is generally close to the expiration of the original 'parent' applicaton. The table below does not account for these factors. Generally, most of the patents should be expired by around the 20th anniversary of the public release in 1996 (~2016). Many will be well before that. Dspark76 (talk) 23:48, 3 June 2010 (UTC)
Update, I just looked on the MPEG LA List and US 7,020,204 already expired on January 29, 2010. Dspark76 (talk) 00:01, 4 June 2010 (UTC)
I have updated the program to try and take account of continuations and divisions. However, all the information is not in machine parseable form. (On example of missing data is that Patent term adjustment data is not available in the text versions, only in the pdfs.) Never the less, this should be better. Jrincayc (talk) 03:44, 11 April 2011 (UTC)
Now the program grabs the term extension from Google's OCRed data. These should be closer. However, there are still some times that the data needed is only in the English that is in the case text, so these still can be somewhat inaccurate. US7,020,204 is now calculated by the program to be January 1, 2010, which is a lot closer to its actual expiration date of January 29, 2010 than before, when it was 2022. Jrincayc (talk) 12:34, 21 April 2011 (UTC)

As a table using User:Jrincayc/Patent_utils:

Patent Filed Granted First File Expiration Summary Notes Company
4833543 24 dec 1986 23 may 1989 24 dec 1986 24 dec 2006 Image processing system and phaselocked loop used therein [1] file+20: [2006, 12, 24] grant+17:[2006, 5, 23] Alcatel-Lucent
4970590 21 dec 1989 13 nov 1990 21 dec 1989 21 dec 2009 System and device for package multiplexing in transmission of many data flows generated by a sole algorithm [2] file+20: [2009, 12, 21] grant+17:[2007, 11, 13] Alcatel-Lucent
5453790 26 mar 1993 26 sep 1995 26 mar 1993 26 mar 2013 Video decoder having asynchronous operation with respect to a video display [3] file+20: [2013, 3, 26] grant+17:[2012, 9, 26] Alcatel-Lucent
5291284 23 jul 1991 01 mar 1994 12 dec 1989 01 mar 2011 Predictive coding and decoding with error drift reduction [4] file+20: [2011, 7, 23] pct_file+20:[2009, 12, 12] grant+17:[2011, 3, 1] British Telecommunications plc
4982270 03 feb 1989 01 jan 1991 03 feb 1989 03 feb 2009 Video data transmitting system [5] file+20: [2009, 2, 3] grant+17:[2008, 1, 1] Canon Inc.
5068724 15 jun 1990 26 nov 1991 15 jun 1990 15 jun 2010 Adaptive motion compensation for digital television [6] file+20: [2010, 6, 15] grant+17:[2008, 11, 26] CIF LICENSING, LLC
5091782 09 apr 1990 25 feb 1992 09 apr 1990 09 apr 2010 Apparatus and method for adaptively compressing successive blocks of digital video [7] file+20: [2010, 4, 9] grant+17:[2009, 2, 25] CIF LICENSING, LLC
5093720 20 aug 1990 03 mar 1992 20 aug 1990 20 aug 2010 Motion compensation for interlaced digital television signals [8] file+20: [2010, 8, 20] grant+17:[2009, 3, 3] CIF LICENSING, LLC
RE35093 03 dec 1990 09 mar 1993 03 dec 1990 03 dec 2010 Systems and methods for coding even fields of interlaced video sequences Reissue of 05193004 filed 09 dec 1994 granted 21 nov 1995 [9] file+20: [2010, 12, 3] related_patent+20:[2010, 12, 32] grant+17:[2010, 3, 9] Case Text: .Iadd.This application is a continuation of application Ser. No. 08/218,970, filed on Mar. 25, 1994, now abandoned, and is a reissue of U.S. Pat. No. 5,193,004. .Iaddend. Columbia University
4796087 01 jun 1987 03 jan 1989 01 jun 1987 01 jun 2007 Process for coding by transformation for the transmission of picture signals [10] file+20: [2007, 6, 1] grant+17:[2006, 1, 3] France Télécom
5235618 06 nov 1990 10 aug 1993 06 nov 1990 06 nov 2010 Video signal coding apparatus, coding method used in the video signal coding apparatus and video signal coding transmission system having the video signal coding apparatus [11] file+20: [2010, 11, 6] grant+17:[2010, 8, 10] Fujitsu
4706260 07 nov 1986 10 nov 1987 07 nov 1986 07 nov 2006 DPCM system with rate-of-fill control of buffer occupancy [12] file+20: [2006, 11, 7] grant+17:[2004, 11, 10] General Electric
4813056 08 dec 1987 14 mar 1989 08 dec 1987 08 dec 2007 Modified statistical coding of digital signals [13] file+20: [2007, 12, 8] grant+17:[2006, 3, 14] General Electric
4394774 26 jun 1981 19 jul 1983 15 dec 1978 19 jul 2000 Digital video compression system and methods utilizing scene adaptive coding with rate buffer feedback [14] file+20: [2001, 6, 26] related_patent+20:[1998, 12, 15] grant+17:[2000, 7, 19] Case Text: This is a continuation of application Ser. No. 969,991, filed Dec. 15, 1978, now U.S. Pat. No. 4,302,775. General Instrument
4698672 27 oct 1986 06 oct 1987 27 oct 1986 27 oct 2006 Coding system for reducing redundancy [15] file+20: [2006, 10, 27] grant+17:[2004, 10, 6] General Instrument
5426464 18 oct 1994 20 jun 1995 32 jan 1993 32 jan 2013 Field elimination apparatus for a video compression/decompression system [16] file+20: [2014, 10, 18] related_patent+20:[2013, 1, 32] grant+17:[2012, 6, 20] Case Text: This is a divisional application of Ser. No. 08/004,753, filed 14 Jan. 1993 . GE
5486864 13 may 1993 23 jan 1996 13 may 1993 13 may 2013 Differential time code method and apparatus as for a compressed video signal [17] file+20: [2013, 5, 13] grant+17:[2013, 1, 23] GE
5491516 14 jan 1993 13 feb 1996 14 jan 1993 13 feb 2013 Field elimination apparatus for a video compression/decompression system [18] file+20: [2013, 1, 14] grant+17:[2013, 2, 13] GE
5600376 20 mar 1995 04 feb 1997 32 jan 1993 04 feb 2014 Field elimination apparatus for a video compression/decompression system [19] file+20: [2015, 3, 20] related_patent+20:[2013, 1, 32] grant+17:[2014, 2, 4] Case Text: This is a divisional application Ser. No. 08/324,558, filed 18 Oct. 1994, now U.S. Pat. No. 5,426,464 which is a divisional of application Ser. No. 08/004,753 filed 14 Jan. 1993 now U.S. Pat. No. 5,491,516. GE
5796743 23 may 1996 18 aug 1998 30 nov 1993 18 aug 2015 Data word indicator in a system for assembling transport data packets [20] file+20: [2016, 5, 23] pct_file+20:[2013, 11, 30] grant+17:[2015, 8, 18] GE
5867501 07 jun 1995 02 feb 1999 17 dec 1992 02 feb 2016 Encoding for communicating data and commands [21] file+20: [2015, 6, 7] related_patent+20:[2012, 12, 17] grant+17:[2016, 2, 2] Case Text: This application is a continuation-in-part of application Ser. No. 07/992,944, filed Dec. 17, 1992 now abandoned. The disclosed invention is related to the commonly assigned, co-pending applications Ser. Nos. 08/485,217, 08/482,618, 08/474,772, 08/485,053, 08/473,541, 08/474,770 now U.S. Pat. No. 5,675,579, issued Oct. 7, 1997, 08/472,222 now abandoned in favor of Ser. No. 08/762,653, filed Dec. 9, 1996, 08/481,749 now U.S. Pat. No. 5,675,807, issued Oct. 7, 1997, 08/484,281, 08/482,628 now U.S. Pat. No. 5,574,849, issued Nov. 12, 1996, 08/479,473, 08/485,062, 08/485,446 now abandoned, and 08/485,055 filed concurrently herewith. Hewlett-Packard Company
4849812 24 feb 1988 18 jul 1989 24 feb 1988 24 feb 2008 Television system in which digitized picture signals subjected to a transform coding are transmitted from an encoding station to a decoding station [22] file+20: [2008, 2, 24] grant+17:[2006, 7, 18] Koninklijke Philips Electronics N.V.
4901075 11 sep 1987 13 feb 1990 11 sep 1987 11 sep 2007 Method and apparatus for bit rate reduction [23] file+20: [2007, 9, 11] grant+17:[2007, 2, 13] Koninklijke Philips Electronics N.V.
5021879 24 sep 1990 04 jun 1991 25 apr 1988 04 jun 2008 System for transmitting video pictures [24] file+20: [2010, 9, 24] related_patent+20:[2008, 4, 25] grant+17:[2008, 6, 4] Case Text: This is a continuation of application Ser. No. 442,475, filed Nov. 22, 1989 which is a continuation of Ser. No. 185,608 filed Apr. 25, 1988, now abandoned. Koninklijke Philips Electronics N.V.
5027206 13 sep 1989 25 jun 1991 13 sep 1989 13 sep 2009 High-definition television systems [25] file+20: [2009, 9, 13] grant+17:[2008, 6, 25] Koninklijke Philips Electronics N.V.
5128758 02 jun 1989 07 jul 1992 02 jun 1989 07 jul 2009 Method and apparatus for digitally processing a high definition television augmentation signal [26] file+20: [2009, 6, 2] grant+17:[2009, 7, 7] Koninklijke Philips Electronics N.V.
5179442 26 nov 1990 12 jan 1993 02 jun 1989 12 jan 2010 Method and apparatus for digitally processing a high definition television augmentation signal [27] file+20: [2010, 11, 26] related_patent+20:[2009, 6, 2] grant+17:[2010, 1, 12] Case Text: This application is a continuation of U.S. application Ser. No. 361,523 filed Jun. 2, 1989, now U.S. Pat. No. 5,128,758. The contents of this application is specifically incorporated herein by reference. Koninklijke Philips Electronics N.V.
5333135 01 feb 1993 26 jul 1994 01 feb 1993 01 feb 2013 Identification of a data stream transmitted as a sequence of packets [28] file+20: [2013, 2, 1] grant+17:[2011, 7, 26] Koninklijke Philips Electronics N.V.
5606539 31 aug 1994 25 feb 1997 05 jun 1991 25 feb 2014 Method and apparatus for encoding and decoding an audio and/or video signal, and a record carrier for use with such apparatus [29] file+20: [2014, 8, 31] related_patent+20:[2011, 6, 5] grant+17:[2014, 2, 25] Case Text: CROSS REFERENCE TO RELATED APPLICATIONS This is a continuation of Application Ser. No. 08/086,402, filed Jun. 30, 1993 and now abandoned, which was a continuation of Application Ser. No. 07/711,186, filed Jun. 5, 1991 and now abandoned. Koninklijke Philips Electronics N.V.
5608697 18 mar 1996 04 mar 1997 05 jun 1991 05 jun 2011 Record carrier containing an audio and/or video signal which has been encoded and includes a decoder delay time parameter indicating a time delay for one or more portions of the signal [30] file+20: [2016, 3, 18] related_patent+20:[2011, 6, 5] Case Text: CROSS REFERENCE TO RELATED APPLICATIONS This is a division of application Ser. No. 08/299,027, filed on Aug. 31, 1994, which is a continuation of application Ser. No. 08/086,402, filed Jun. 30, 1993 and now abandoned, which was a continuation of application Ser. No. 07/711,186, filed Jun. 5, 1991 and now abandoned. Koninklijke Philips Electronics N.V.
5740310 28 jun 1994 14 apr 1998 32 may 1991 14 apr 2015 Method of maintaining display continuity from a CD with slow-motion or freeze capability [31] file+20: [2014, 6, 28] related_patent+20:[2011, 5, 32] grant+17:[2015, 4, 14] Case Text: This is a continuation of application Ser. No. 07/707,527, filed May 30, 1991, now abandoned. Koninklijke Philips Electronics N.V.
5844867 09 sep 1996 01 dec 1998 05 jun 1991 05 jun 2011 Methods and apparatus for encoding and decoding an audio and/or video signal, and a record carrier used therewith or produced therefrom [32] file+20: [2016, 9, 9] related_patent+20:[2011, 6, 5] Case Text: CROSS REFERENCE TO RELATED APPLICATIONS This is a continuation of application Ser. No. 08/299,027, filed on Aug. 31, 1994, now U.S. Pat. No. 5,606,539, which is a continuation of application Ser. No. 08/086,402, filed Jun. 30, 1993 and now abandoned, which was a continuation of application Ser. No. 07/711,186, filed Jun. 5, 1991 and now abandoned. Koninklijke Philips Electronics N.V.
6181712 11 oct 1995 30 jan 2001 23 feb 1995 30 jan 2018 Method and device for transmitting data packets [33] file+20: [2015, 10, 11] pct_file+20:[2015, 2, 23] grant+17:[2018, 1, 30] Koninklijke Philips Electronics N.V.
6792001 21 sep 2000 14 sep 2004 21 sep 2000 21 dec 2022 Method and device for transmitting data packets [34] file+20: [2020, 9, 21] term extension 821 days Case Text: CROSS REFERENCE TO RELATED APPLICATIONS This is a continuation of application Ser. No. 08/537,701, filed Oct. 11, 1995 now U.S. Pat. No. 6,181,712 which is a 371 of PCT/IB95/00116 filed Feb. 23, 1995. Koninklijke Philips Electronics N.V.
RE37057 14 nov 1994 21 may 1996 14 nov 1994 14 nov 2014 Apparatus and method for converting an HDTV signal to a non-HDTV signal Reissue of 05519446 filed 18 may 1998 granted 20 feb 2001 [35] file+20: [2014, 11, 14] related_patent+20:[2014, 11, 32] grant+17:[2013, 5, 21] LG Electronics
RE37568 30 nov 1993 01 apr 1997 30 nov 1993 01 apr 2014 Inverse Quantizer Reissue of 05617094 filed 31 mar 1999 granted 05 mar 2002 [36] file+20: [2013, 11, 30] related_patent+20:[2013, 11, 32] grant+17:[2014, 4, 1] LG Electronics
RE35910 11 may 1990 12 may 1992 11 may 1990 11 may 2010 Moving image signal encoding apparatus and decoding apparatus Reissue of 05113255 filed 12 may 1994 granted 29 sep 1998 [37] file+20: [2010, 5, 11] related_patent+20:[2010, 5, 32] grant+17:[2009, 5, 12] Matsushita
RE36015 27 mar 1992 08 mar 1994 27 mar 1992 27 mar 2012 Apparatus and method for processing groups of fields in a video data compression system Reissue of 05293229 filed 02 oct 1995 granted 29 dec 1998 [38] file+20: [2012, 3, 27] related_patent+20:[2012, 3, 32] grant+17:[2011, 3, 8] Matsushita
RE36507 27 mar 1992 08 mar 1994 27 mar 1992 27 mar 2012 Apparatus and method for processing groups of fields in a video data compression system to encode a single frame as an I-field and a P-field Reissue of 05293229 filed 21 oct 1997 granted 18 jan 2000 [39] file+20: [2012, 3, 27] related_patent+20:[2012, 3, 27] grant+17:[2011, 3, 8] Case Text: .Iadd.Application Ser. No 08/538,101, filed Oct. 2, 1995, now U.S. Pat. No. RE 36,015, and application Ser. No. 08/954,916, filed Oct. 21, 1997, are reissue applications of U.S. Pat. No. 5,293,229, which issues from application Ser. No. 07/859,145, filed Mar. 27, 1992..Iaddend. Matsushita
RE39276 20 jul 1994 28 apr 1998 02 nov 1992 28 apr 2015 Method for determining motion compensation Reissue of 05745182 filed 27 apr 2000 granted 12 sep 2006 [40] file+20: [2014, 7, 20] related_patent+20:[2012, 11, 2] grant+17:[2015, 4, 28] Case Text: This is a .Iadd.reissue of U.S. Pat. No. 5,745,182 which is a .Iaddend.division of application Ser. No. 07/970,046 filed Nov. 2, 1992, now U.S. Pat. No. 5,369,449. .Iadd.This application has the following co-pending related reissue applications: Ser. No. 09/833,680 filed Apr. 13, 2001, Ser. No. 09/833,769 filed Apr. 13, 2001, Ser. No. 09/833,770 filed Apr. 13, 2001, Ser. No. 09/866,811 filed May 30, 2001 and Ser. No. 10/895,283 filed Jul. 21, 2004..Iaddend. Matsushita
RE39278 20 jul 1994 28 apr 1998 02 nov 1992 28 apr 2015 Method for determining motion compensation Reissue of 05745182 filed 13 apr 2001 granted 12 sep 2006 [41] file+20: [2014, 7, 20] related_patent+20:[2012, 11, 2] grant+17:[2015, 4, 28] Case Text: This is a .Iadd.reissue of U.S. Pat. No. 5,745,182 which is a .Iaddend.division of application Ser. No. 07/970,046 filed Nov. 2, 1992, now U.S. Pat. No. 5,369,449. .Iadd.This application is a division of reissue application No. 09/559,627, filed Apr. 27, 2000 and has the following co-pending related reissue applications: 09/833,680 filed Apr. 13, 2001; 09/833,770 filed Apr. 13, 2001, 09/866,811 filed May 30, 2001, and 10/895,283 filed Jul. 21, 2004. .Iaddend. Matsushita
RE39280 20 jul 1994 28 apr 1998 02 nov 1992 28 apr 2015 Method for determining motion compensation Reissue of 05745182 filed 30 may 2001 granted 12 sep 2006 [42] file+20: [2014, 7, 20] related_patent+20:[2012, 11, 2] grant+17:[2015, 4, 28] Case Text: This is a .Iadd.reissue of U.S. Pat. No. 5,745,182 which is a .Iaddend.division of application Ser. No. 07/970,046 filed Nov. 2, 1992, now U.S. Pat. No. 5,369,449. .Iadd.This application is a division of reissue application Ser. No. 09/559,627, filed Apr. 27, 2000 and has the following co-pending related reissue applications: Ser. No. 09/833,680 filed Apr. 13, 2001, Ser. No. 09/833,769 filed Apr. 13, 2001, Ser. No. 09/833,770 filed Apr. 13, 2001, and Ser. No. 10/895,283 filed Jul. 21, 2004..Iaddend. Matsushita
5223949 17 apr 1992 29 jun 1993 17 apr 1992 17 apr 2012 Coding means for a signal processing system [43] file+20: [2012, 4, 17] grant+17:[2010, 6, 29] Matsushita
5412430 04 may 1994 02 may 1995 31 jul 1992 31 jul 2012 Image coding method and image coding apparatus [44] file+20: [2014, 5, 4] related_patent+20:[2012, 7, 31] grant+17:[2012, 5, 2] Case Text: This application is a Continuation of now abandoned application, Ser. No. 07/922,772, filed Jul. 31, 1992, now abandoned. Matsushita
5784107 23 jan 1996 21 jul 1998 21 apr 1992 21 apr 2012 Method and apparatus for picture coding and method and apparatus for picture decoding [45] file+20: [2016, 1, 23] related_patent+20:[2012, 4, 21] Case Text: This application is a continuation of application Ser. No. 08/157,627 filed Nov. 24, 1993 which is a continuation-in-part of Ser. No. 871,697, now U.S. Pat. No. 5,347,309 filed Apr. 21, 1992, now abandoned. Matsushita
4954892 04 oct 1989 04 sep 1990 04 oct 1989 04 oct 2009 Buffer controlled picture signal encoding and decoding system [46] file+20: [2009, 10, 4] grant+17:[2007, 9, 4] Mitsubishi
5072295 20 aug 1990 10 dec 1991 20 aug 1990 20 aug 2010 Adaptive quantization coder/decoder with limiter circuitry [47] file+20: [2010, 8, 20] grant+17:[2008, 12, 10] Mitsubishi
5268846 10 apr 1991 07 dec 1993 10 apr 1991 10 apr 2011 Method and apparatus for nonsequential multimedia data interchange in a data processing system [48] file+20: [2011, 4, 10] grant+17:[2010, 12, 7] Mitsubishi
5949489 31 jul 1998 07 sep 1999 16 oct 1992 16 oct 2012 Image signal coding system [49] file+20: [2018, 7, 31] related_patent+20:[2012, 10, 16] Case Text: This application is a divisional of application Ser. No. 08/803,235, filed on Feb. 20, 1997, now U.S. Pat. No. 5,867,220, the entire contents of which are hereby incorporated by reference, which is a continuation of application Ser. No. 08/121,293, filed on Sep. 13, 1993, now U.S. Pat. No. 5,638,127, which is a division of application Ser. No. 07/962,299, filed on Oct. 16, 1992, now U.S. Pat. No. 5,274,442. Mitsubishi
5963258 31 jul 1998 05 oct 1999 16 oct 1992 16 oct 2012 Image signal coding system [50] file+20: [2018, 7, 31] related_patent+20:[2012, 10, 16] Case Text: This application is a divisional of application Ser. No. 08/803,235, filed on Feb. 20, 1997, now U.S. Pat. No. 5,867,220, the entire contents of which are hereby incorporated by reference, which is a continuation of application Ser. No. 08/121,293, filed on Sep. 13, 1993, now U.S. Pat. No. 5,638,127, which is a continuation of application Ser. No. 07/962,299, filed on Oct. 16, 1992, now U.S. Pat. No. 5,274,442. Mitsubishi
5970175 26 oct 1998 19 oct 1999 16 oct 1992 16 oct 2012 Image signal coding system [51] file+20: [2018, 10, 26] related_patent+20:[2012, 10, 16] Case Text: This application is a divisional of application Ser. No. 08/803,235 filed on Feb. 20, 1997, now U.S. Pat. No. 5,867,220, which is a continuation of application Ser. No. 08/121,293, filed Sep. 13, 1993, now U.S. Pat. No. 5,638,127, which is a divisional of application Ser. No. 07/962,299 filed Oct. 16, 1992, now U.S. Pat. No. 5,274,442, the entire contents of which are hereby incorporated by reference. Mitsubishi
5990960 09 dec 1998 23 nov 1999 16 oct 1992 16 oct 2012 Image signal coding system [52] file+20: [2018, 12, 9] related_patent+20:[2012, 10, 16] Case Text: This application is a divisional of application Ser. No. 08/803,235, filed on Feb. 20, 1997, now U.S. Pat. No. 5,867,220 which is a continuation of application Ser. No. 08/121,293, filed Sep. 13, 1993, now U.S. Pat. No. 5,638,127, which is a divisional of application Ser. No. 07/962,299 filed Oct. 16, 1992, now U.S. Pat. No. 5,274,442, the entire contents of which is hereby incorporated by reference. Mitsubishi
6002439 27 may 1999 14 dec 1999 16 oct 1992 16 oct 2012 Image signal coding system [53] file+20: [2019, 5, 27] related_patent+20:[2012, 10, 16] Case Text: This application is a divisional of co-pending application Ser. No. 09/207,919, filed on Dec. 9, 1998, now allowed, which is a continuation of application Ser. No. 08/803,235, filed Feb. 20, 1997, now U.S. Pat. No. 5,867,220, which is a continuation of application Ser. No. 08/121,293, filed Sep. 13, 1993, now U.S. Pat. No. 5,638,127, which is a divisional of application Ser. No. 07/962,299, filed Oct. 16, 1992, now U.S. Pat. No. 5,274,442, the entire contents of which are hereby incorporated by reference. Mitsubishi
6097759 22 nov 1999 01 aug 2000 16 oct 1992 16 oct 2012 Image signal coding system [54] file+20: [2019, 11, 22] related_patent+20:[2012, 10, 16] Case Text: This application is a divisional of application Ser. No. 09/207,919, filed on Dec. 9, 1998, now U.S. Pat. No. 5,990,960, which is a divisional of application Ser. No. 08/803,235, filed on Feb. 20, 1997, now U.S. Pat. No. 5,867,220, which is a continuation of application Ser. No. 08/121,293, filed on Sep. 13, 1993, now U.S. Pat. No. 5,638,127, which is a divisional of application Ser. No. 07/962,299, filed on Oct. 16, 1992, now U.S. Pat. No. 5,274,442, the entire contents of which are hereby incorporated by reference. Mitsubishi
6188794 20 may 1999 13 feb 2001 16 oct 1992 16 oct 2012 Image signal coding system [55] file+20: [2019, 5, 20] related_patent+20:[2012, 10, 16] Case Text: This application is a divisional of application Ser. No. 09/178,619 filed Oct. 26, 1998 now U.S. Pat. No. 5,427,678, now allowed, which is a Div. of Ser. No. 08/803,235 filed Feb. 20, 1997, U.S. Pat. No. 5,867,220, which is a Cont. of Ser. No. 08/121,293 filed Sep. 13, 1993, U.S. Pat. No. 5,638,127, which is a Div. of Ser. No. 07/962,299 filed Oct. 16, 1992, U.S. Pat. No. 5,274,442. Mitsubishi
6307973 04 dec 2000 23 oct 2001 16 oct 1992 16 oct 2012 Image signal coding system [56] file+20: [2020, 12, 4] related_patent+20:[2012, 10, 16] term extension 0 days Case Text: This application is a divisional application under 37 C.F.R. .sctn. 1.53(b) of prior application Ser. No. 09/315,038 filed May 20, 1999, now U.S. Pat. No. 6,188,794 which is a divisional of application Ser. No. 09/178,619 filed Oct. 26, 1998, now U.S. Pat. No. 5,970,175, which is a divisional of application Ser. No. 08/803,235 filed Feb. 20, 1997, now U.S. Pat. No. 5,867,220 which is a continuation of application Ser. No. 08/121,293 filed Sep. 13, 1993, now U.S. Pat. No. 5,638,127, which is a divisional of application Ser. No. 07/962,299 filed Oct. 16, 1992, now U.S. Pat. No. 5,274,442, the entire contents of which are hereby incorporated by reference. Mitsubishi
7362805 02 mar 2006 22 apr 2008 29 jan 1993 29 jan 2013 High efficiency encoder and video information recording/reproducing apparatus [57] file+20: [2026, 3, 2] related_patent+20:[2013, 1, 29] term extension 0 days Case Text: This application is a divisional of co-pending application Ser. No. 10/372,212 filed on Feb. 25, 2003, which is a divisional of application Ser. No. 09/271,458, filed on Mar. 18, 1999, now U.S. Pat. No. 6,870,884 B1, which is a divisional of application Ser. No. 09/113,287, filed Jul. 10, 1998, now U.S. Pat. No. 5,909,252, which is a divisional of application Ser. No. 08/559,488, filed Nov. 15, 1995, now U.S. Pat. No. 5,841,474, which is a divisional of application Ser. No. 08/011,243, filed on Jan. 29, 1993, now U.S. Pat. No. 5,479,264, the entire contents of which are hereby incorporated by reference and for which priority is claimed under 35 U.S.C. .sctn. 120; and this application claims priority of Application No. 4-013719, 4-037599, 4-037821, and 4-043075 filed in Japan on Jan. 29, 1992; Feb. 25, 1992; Feb. 25, 1992 and Feb. 28, 1992 under 35 U.S.C. .sctn. 119. Mitsubishi
7376184 04 nov 2002 20 may 2008 29 jan 1993 31 may 2014 High-efficiency encoder and video information recording/reproducing apparatus [58] file+20: [2022, 11, 4] related_patent+20:[2013, 1, 29] term extension 487 days Case Text: This application is a divisional of application Ser. No. 09/271,458, filed on Mar. 18, 1999 now U.S. Pat. No. 6,870,884, which is a divisional of application Ser. No. 09/113,287, filed Jul. 10, 1998 now U.S. Pat. No. 5,909,252, which is a divisional of application Ser. No. 08/559,488, filed Nov. 15, 1995 now U.S. Pat. No. 5,841,474, which is a divisional of application Ser. No. 08/011,243, filed on Jan. 29, 1993 now U.S. Pat. No. 5,479,264, the entire contents of which are hereby incorporated by reference and for which priority is claimed under 35 U.S.C. .sctn. 120; and this application claims priority of application No. 4-013719, 4-037599, 4-037821, and 4-043075 filed in Japan on Jan. 29, 1992; Feb. 25, 1992; Feb. 25, 1992 and Feb. 28, 1992 under 35 U.S.C. .sctn. 119. Mitsubishi
7756202 30 oct 2007 13 jul 2010 29 jan 1993 06 aug 2013 High-efficiency encoder and video information recording/reproducing apparatus [59] file+20: [2027, 10, 30] related_patent+20:[2013, 1, 29] term extension 189 days Case Text: This application is a Continuation of application Ser. No. 11/276,501 filed on Mar. 2, 2006 now U.S. Pat. No. 7,362,805 which is a divisional of application Ser. No. 10/372,212 filed on Feb. 25, 2003 now U.S. Pat. No. 7,336,708, which is a divisional of application Ser. No. 09/271,458, filed on Mar. 18, 1999 now U.S. Pat. No. 6,870,884, which is a divisional of application Ser. No. 09/113,287, filed Jul. 10, 1998 now U.S. Pat. No. 5,909,252, which is a divisional of application Ser. No. 08/559,488, filed Nov. 15, 1995 now U.S. Pat. No. 5,841,474, which is a divisional of application Ser. No. 08/011,243, filed on Jan. 29, 1993 now U.S. Pat. No. 5,479,264, the entire contents of which are hereby incorporated by reference and for which priority is claimed under 35 U.S.C. .sctn.120; and this application claims priority of Application No. 4-013719, 4-037599, 4-037821, and 4-043075 filed in Japan on Jan. 29, 1992; Feb. 25, 1992; Feb. 25, 1992 and Feb. 28, 1992 under 35 U.S.C. .sctn.119. Mitsubishi
4958226 27 sep 1989 18 sep 1990 27 sep 1989 27 sep 2009 Conditional motion compensated interpolation of digital motion video [60] file+20: [2009, 9, 27] grant+17:[2007, 9, 18] Multimedia Patent Trust
5227878 15 nov 1991 13 jul 1993 15 nov 1991 15 nov 2011 Adaptive coding and decoding of frames and fields of video [61] file+20: [2011, 11, 15] grant+17:[2010, 7, 13] Multimedia Patent Trust
5500678 18 mar 1994 19 mar 1996 18 mar 1994 18 mar 2014 Optimized scanning of transform coefficients in video coding [62] file+20: [2014, 3, 18] grant+17:[2013, 3, 19] Multimedia Patent Trust
5563593 18 mar 1994 08 oct 1996 18 mar 1994 18 mar 2014 Video coding with optimized low complexity variable length codes [63] file+20: [2014, 3, 18] grant+17:[2013, 10, 8] Multimedia Patent Trust
4849812 24 feb 1988 18 jul 1989 24 feb 1988 24 feb 2008 Television system in which digitized picture signals subjected to a transform coding are transmitted from an encoding station to a decoding station [64] file+20: [2008, 2, 24] grant+17:[2006, 7, 18] Philips
4901075 11 sep 1987 13 feb 1990 11 sep 1987 11 sep 2007 Method and apparatus for bit rate reduction [65] file+20: [2007, 9, 11] grant+17:[2007, 2, 13] Philips
5021879 24 sep 1990 04 jun 1991 25 apr 1988 04 jun 2008 System for transmitting video pictures [66] file+20: [2010, 9, 24] related_patent+20:[2008, 4, 25] grant+17:[2008, 6, 4] Case Text: This is a continuation of application Ser. No. 442,475, filed Nov. 22, 1989 which is a continuation of Ser. No. 185,608 filed Apr. 25, 1988, now abandoned. Philips
5027206 13 sep 1989 25 jun 1991 13 sep 1989 13 sep 2009 High-definition television systems [67] file+20: [2009, 9, 13] grant+17:[2008, 6, 25] Philips
5128758 02 jun 1989 07 jul 1992 02 jun 1989 07 jul 2009 Method and apparatus for digitally processing a high definition television augmentation signal [68] file+20: [2009, 6, 2] grant+17:[2009, 7, 7] Philips
5179442 26 nov 1990 12 jan 1993 02 jun 1989 12 jan 2010 Method and apparatus for digitally processing a high definition television augmentation signal [69] file+20: [2010, 11, 26] related_patent+20:[2009, 6, 2] grant+17:[2010, 1, 12] Case Text: This application is a continuation of U.S. application Ser. No. 361,523 filed Jun. 2, 1989, now U.S. Pat. No. 5,128,758. The contents of this application is specifically incorporated herein by reference. Philips
5333135 01 feb 1993 26 jul 1994 01 feb 1993 01 feb 2013 Identification of a data stream transmitted as a sequence of packets [70] file+20: [2013, 2, 1] grant+17:[2011, 7, 26] Philips
5606539 31 aug 1994 25 feb 1997 05 jun 1991 25 feb 2014 Method and apparatus for encoding and decoding an audio and/or video signal, and a record carrier for use with such apparatus [71] file+20: [2014, 8, 31] related_patent+20:[2011, 6, 5] grant+17:[2014, 2, 25] Case Text: CROSS REFERENCE TO RELATED APPLICATIONS This is a continuation of Application Ser. No. 08/086,402, filed Jun. 30, 1993 and now abandoned, which was a continuation of Application Ser. No. 07/711,186, filed Jun. 5, 1991 and now abandoned. Philips
5608697 18 mar 1996 04 mar 1997 05 jun 1991 05 jun 2011 Record carrier containing an audio and/or video signal which has been encoded and includes a decoder delay time parameter indicating a time delay for one or more portions of the signal [72] file+20: [2016, 3, 18] related_patent+20:[2011, 6, 5] Case Text: CROSS REFERENCE TO RELATED APPLICATIONS This is a division of application Ser. No. 08/299,027, filed on Aug. 31, 1994, which is a continuation of application Ser. No. 08/086,402, filed Jun. 30, 1993 and now abandoned, which was a continuation of application Ser. No. 07/711,186, filed Jun. 5, 1991 and now abandoned. Philips
5740310 28 jun 1994 14 apr 1998 32 may 1991 14 apr 2015 Method of maintaining display continuity from a CD with slow-motion or freeze capability [73] file+20: [2014, 6, 28] related_patent+20:[2011, 5, 32] grant+17:[2015, 4, 14] Case Text: This is a continuation of application Ser. No. 07/707,527, filed May 30, 1991, now abandoned. Philips
5844867 09 sep 1996 01 dec 1998 05 jun 1991 05 jun 2011 Methods and apparatus for encoding and decoding an audio and/or video signal, and a record carrier used therewith or produced therefrom [74] file+20: [2016, 9, 9] related_patent+20:[2011, 6, 5] Case Text: CROSS REFERENCE TO RELATED APPLICATIONS This is a continuation of application Ser. No. 08/299,027, filed on Aug. 31, 1994, now U.S. Pat. No. 5,606,539, which is a continuation of application Ser. No. 08/086,402, filed Jun. 30, 1993 and now abandoned, which was a continuation of application Ser. No. 07/711,186, filed Jun. 5, 1991 and now abandoned. Philips
5461421 29 nov 1993 24 oct 1995 29 nov 1993 29 nov 2013 Encoding and decoding method and apparatus thereof [75] file+20: [2013, 11, 29] grant+17:[2012, 10, 24] Samsung
5467086 18 jun 1993 14 nov 1995 18 jun 1993 18 jun 2013 Apparatus and method of coding/decoding video data [76] file+20: [2013, 6, 18] grant+17:[2012, 11, 14] Samsung
5654706 18 dec 1996 05 aug 1997 15 jul 1993 15 jul 2013 System for variable length decoding digital transmission data which has been compressed by selecting a scanning pattern [77] file+20: [2016, 12, 18] related_patent+20:[2013, 7, 15] Case Text: This is a continuation of application Ser. No. 08/532,987 filed Sep. 22, 1995, now U.S. Pat. No. 5,602,549 which is a Continuation Application of prior application Ser. No. 08/095,468, Jul. 15, 1993, now U.S. Pat. No. 5,497,153. Samsung
6680975 02 nov 2000 20 jan 2004 01 mar 1993 12 mar 2014 Signal encoding and decoding system and method [78] file+20: [2020, 11, 2] related_patent+20:[2013, 3, 1] term extension 376 days Case Text: This is a Continuation of application Ser. No. 08/024,305 filed Mar. 1, 1993 now U.S. Pat. No. 6,263,026, the disclosure of which is incorporated herein by reference. Samsung
7292657 03 jul 2003 06 nov 2007 01 mar 1993 01 mar 2013 Signal compressing signal [79] file+20: [2023, 7, 3] related_patent+20:[2013, 3, 1] Case Text: This is a Continuation of application Ser. No. 09/703,649 filed Nov. 2, 2000; now U.S. Pat. No. 6,680,975 which is a Continuation of application Ser. No. 08/024,305 filed Mar. 1, 1993; now U.S. Pat. No. 6,263,026 the disclosures of which are incorporated herein by reference. Samsung
7609760 05 jan 2009 27 oct 2009 17 jul 2001 17 jul 2021 Signal compressing system [80] file+20: [2029, 1, 5] related_patent+20:[2021, 7, 17] term extension 0 days Case Text: CROSS-REFERENCES TO RELATED PATENT APPLICATIONS This is a Continuation Application of application Ser. No. 11/873,282, filed Oct. 16, 2007; which is a Continuation Application of application Ser. No. 10/612,013, filed Jul. 3, 2003, and issued on Nov. 6, 2007, as U.S. Pat. No. 7,292,657; which is a Continuation Application of application Ser. No. 09/703,649, filed Nov. 2, 2000, and issued Jan. 20, 2004, as U.S. Pat. No. 6,680,975; which is a Continuation Application of application Ser. No. 08/024,305, filed Mar. 1, 1993, and issued on Jul. 17, 2001, as U.S. Pat. No. 6,263,026; the disclosures of which are incorporated herein by reference. One (1) Reissue application Ser. No. 10/609,438, filed on Jul. 1, 2003, of U.S. Pat. No. 6,263,026 has been abandoned. Continuation application Ser. No. 12/338,647, filed Dec. 18, 2008 is a Continuation application of Ser. No. 11/873,282, filed Oct. 16, 2007. Continuation application Ser. Nos. 12/343,797, 12/343,839, and 12/343,898, all filed on Dec. 24, 2008, are Continuation Applications of Ser. No. 11/873,282, filed Oct. 16, 2007. Samsung
7616687 05 jan 2009 10 nov 2009 17 jul 2001 17 jul 2021 Signal compressing system [81] file+20: [2029, 1, 5] related_patent+20:[2021, 7, 17] term extension 0 days Case Text: CROSS-REFERENCES TO RELATED PATENT APPLICATIONS This is a Continuation Application of application Ser. No. 11/873,282, filed Oct. 16, 2007; which is a Continuation Application of application Ser. No. 10/612,013, filed Jul. 3, 2003, and issued on Nov. 6, 2007, as U.S. Pat. No. 7,292,657; which is a Continuation Application of application Ser. No. 09/703,649, filed Nov. 2, 2000, and issued Jan. 20, 2004, as U.S. Pat. No. 6,680,975; which is a Continuation Application of application Ser. No. 08/024,305, filed Mar. 1, 1993, and issued on Jul. 17, 2001, as U.S. Pat. No. 6,263,026; the disclosures of which are incorporated herein by reference. One (1) Reissue application Ser. No. 10/609,438, filed on Jul. 1, 2003, of U.S. Pat. No. 6,263,026 has been abandoned. Continuation application Ser. No. 12/338,647, filed Dec. 18, 2008 is a Continuation Application of Ser. No. 11/873,282, filed Oct. 16, 2007. Continuation application Ser. Nos. 12/343,797, 12/343,839, and 12/343,898, all filed on Dec. 24, 2008, are Continuation Applications of Ser. No. 11/873,282, filed Oct. 16, 2007. Samsung
7684490 18 dec 2008 23 mar 2010 17 jul 2001 17 jul 2021 Signal compressing system [82] file+20: [2028, 12, 18] related_patent+20:[2021, 7, 17] term extension 0 days Case Text: CROSS-REFERENCES TO RELATED PATENT APPLICATIONS This is a Continuation Application of application Ser. No. 11/873,282, filed Oct. 16, 2007 now abandoned; which is a Continuation Application of application Ser. No. 10/612,013, filed Jul. 3, 2003, and issued on Nov. 6, 2007, as U.S. Pat. No. 7,292,657; which is a Continuation Application of application Ser. No. 09/703,649, filed Nov. 2, 2000, and issued Jan. 20, 2004, as U.S. Pat. No. 6,680,975; which is a Continuation Application of application Ser. No. 08/024,305, filed Mar. 1, 1993, and issued on Jul. 17, 2001, as U.S. Pat. No. 6,263,026; the disclosures of which are incorporated herein by reference. One (1) Reissue application Ser. No. 10/609,438, filed on Jul. 1, 2003, of U.S. Pat. No. 6,263,026 has been abandoned. Samsung
7724821 24 dec 2008 25 may 2010 17 jul 2001 17 jul 2021 Signal compressing system [83] file+20: [2028, 12, 24] related_patent+20:[2021, 7, 17] term extension 0 days Case Text: CROSS-REFERENCES TO RELATED PATENT APPLICATIONS This is a Continuation Application of application Ser. No. 11/873,282, filed Oct. 16, 2007 now abandoned; which is a Continuation Application of application Ser. No. 10/612,013, filed Jul. 3, 2003, and issued on Nov. 6, 2007, as U.S. Pat. No. 7,292,657; which is a Continuation Application of application Ser. No. 09/703,649, filed Nov. 2, 2000, and issued Jan. 20, 2004, as U.S. Pat. No. 6,680,975; which is a Continuation Application of application Ser. No. 08/024,305, filed Mar. 1, 1993, and issued on Jul. 17, 2001, as U.S. Pat. No. 6,263,026; the disclosures of which are incorporated herein by reference. One (1) Reissue Application Ser. No. 10/609,438, filed on Jul. 1, 2003, of U.S. Pat. No. 6,263,026 has been abandoned. Continuation application Ser. No. 12,338,647, filed Dec. 18, 2008 is a Continuation Application of Ser. No. 11/873,282, filed Oct. 16, 2007. Samsung
7724822 24 dec 2008 25 may 2010 17 jul 2001 17 jul 2021 Signal compressing system [84] file+20: [2028, 12, 24] related_patent+20:[2021, 7, 17] term extension 0 days Case Text: CROSS-REFERENCES TO RELATED PATENT APPLICATIONS This is a Continuation Application of application Ser. No. 11/873,282, filed Oct. 16, 2007 now abandoned; which is a Continuation Application of application Ser. No. 10/612,013, filed Jul. 3, 2003, and issued on Nov. 6, 2007, as U.S. Pat. No. 7,292,657; which is a Continuation Application of application Ser. No. 09/703,649, filed Nov. 2, 2000, and issued Jan. 20, 2004, as U.S. Pat. No. 6,680,975; which is a Continuation Application of application Ser. No. 08/024,305, filed Mar. 1, 1993, and issued on Jul. 17, 2001, as U.S. Pat. No. 6,263,026; the disclosures of which are incorporated herein by reference. One (1) Reissue application Ser. No. 10/609,438, filed on Jul. 1, 2003, of U.S. Pat. No. 6,263,026 has been abandoned. Continuation Application No. 12,338,647, filed Dec. 18, 2008 is a Continuation Application of 11/873,282, filed Oct. 16, 2007. Samsung
7724823 24 dec 2008 25 may 2010 17 jul 2001 17 jul 2021 Signal compressing system [85] file+20: [2028, 12, 24] related_patent+20:[2021, 7, 17] term extension 0 days Case Text: CROSS-REFERENCES TO RELATED PATENT APPLICATIONS This is a Continuation Application of application Ser. No. 11/873,282, filed Oct. 16, 2007 now abandoned; which is a Continuation Application of application Ser. No. 10/612,013, filed Jul. 3, 2003, and issued on Nov. 6, 2007, as U.S. Pat. No. 7,292,657; which is a Continuation Application of application Ser. No. 09/703,649, filed Nov. 2, 2000, and issued Jan. 20, 2004, as U.S. Pat. No. 6,680,975; which is a Continuation Application of application Ser. No. 08/024,305, filed Mar. 1, 1993, and issued on Jul. 17, 2001, as U.S. Pat. No. 6,263,026; the disclosures of which are incorporated herein by reference. One (1) Reissue application Ser. No. 10/609,438, filed on Jul. 1, 2003, of U.S. Pat. No. 6,263,026 has been abandoned. Continuation application Ser. No. 12,338,647, filed Dec. 18, 2008 is a Continuation application Ser. No. 11/873,282, filed Oct. 16, 2007. Samsung
7724824 05 jan 2009 25 may 2010 17 jul 2001 17 jul 2021 Signal compressing system [86] file+20: [2029, 1, 5] related_patent+20:[2021, 7, 17] term extension 0 days Case Text: CROSS-REFERENCES TO RELATED PATENT APPLICATIONS This is a Continuation application of application Ser. No. 11/873,282, filed Oct. 16, 2007 now abandoned; which is a Continuation Application of application Ser. No. 10/612,013, filed Jul. 3, 2003, and issued on Nov. 6, 2007, as U.S. Pat. No. 7,292,657; which is a Continuation Application of application Ser. No. 09/703,649, filed Nov. 2, 2000, and issued Jan. 20, 2004, as U.S. Pat. No. 6,680,975; which is a Continuation Application of application Ser. No. 08/024,305, filed Mar. 1, 1993, and issued on Jul. 17, 2001, as U.S. Pat. No. 6,263,026; the disclosures of which are incorporated herein by reference. One (1) Reissue application Ser. No. 10/609,438, filed on Jul. 1, 2003, of U.S. Pat. No. 6,263,026 has been abandoned. Continuation application Ser. No. 12/338,647, filed Dec. 18, 2008 is a Continuation application of Ser. No. 11/873,282, filed Oct. 16, 2007. Continuation application Ser. Nos. 12/343,797, 12/343,839, and 12/343,898, all filed on Dec. 24, 2008, are Continuation applications of Ser. No. 11/873,282, filed Oct. 16, 2007. Samsung
7724828 16 nov 2009 25 may 2010 01 mar 1993 01 mar 2013 Signal compressing system [87] file+20: [2029, 11, 16] related_patent+20:[2013, 3, 1] term extension 0 days Case Text: CROSS-REFERENCES TO RELATED PATENT APPLICATIONS This is a Continuation Application of application Ser. No. 12/574,255, filed Oct. 6, 2009, which is a Continuation Application of Ser. No. 12/348,621, filed Jan. 5, 2009, issued as U.S. Pat. No. 7,616,687 on Nov. 10, 2009, which is a Continuation Application of application Ser. No. 11/873,282, filed Oct. 16, 2007; which is a Continuation Application of application Ser. No. 10/612,013, filed Jul. 3, 2003, and issued on Nov. 6, 2007, as U.S. Pat. No. 7,292,657; which is a Continuation Application of application Ser. No. 09/703,649, filed Nov. 2, 2000, and issued Jan. 20, 2004, as U.S. Pat. No. 6,680,975; which is a Continuation Application of application Ser. No. 08/024,305, filed Mar. 1, 1993, and issued on Jul. 17, 2001, as U.S. Pat. No. 6,263,026; the disclosures of which are incorporated herein by reference. One (1) Reissue application Ser. No. 10/609,438, filed on Jul. 1, 2003, of U.S. Pat. No. 6,263,026 has been abandoned. Continuation application Ser. No. 12/338,647, filed Dec. 18, 2008, Continuation application Ser. Nos. 12/343,797, 12/343,839, and 12/343,898, all filed on Dec. 24, 2008, Continuation application Ser. Nos. 12/348,510, 12/348,535, 12/348,539, 12/348,581, 12/348,590, and 12/348,621, all filed on Jan. 5, 2009, and Continuation application Ser. No. 12/497,264, filed on Jul. 2, 2009, are Continuation Applications of Ser. No. 11/873,282. Samsung
7724829 16 nov 2009 25 may 2010 01 mar 1993 01 mar 2013 Signal compressing system [88] file+20: [2029, 11, 16] related_patent+20:[2013, 3, 1] term extension 0 days Case Text: CROSS-REFERENCES TO RELATED PATENT APPLICATIONS This is a Continuation Application of application Ser. No. 12/574,255, filed Oct. 6, 2009, which is a Continuation application of 12/348,621, filed Jan. 5, 2009, issued as U.S. Pat. No. 7,616,687 on Nov. 10, 2009, which is a Continuation Application of application Ser. No. 11/873,282, filed Oct. 16, 2007; which is a Continuation Application of application Ser. No. 10/612,013, filed Jul. 3, 2003, and issued on Nov. 6, 2007, as U.S. Pat. No. 7,292,657; which is a Continuation Application of application Ser. No. 09/703,649, filed Nov. 2, 2000, and issued Jan. 20, 2004, as U.S. Pat. No. 6,680,975; which is a Continuation Application of application Ser. No. 08/024,305, filed Mar. 1, 1993, and issued on Jul. 17, 2001, as U.S. Pat. No. 6,263,026; the disclosures of which are incorporated herein by reference. One (1) Reissue application Ser. No. 10/609,438, filed on Jul. 1, 2003, of U.S. Pat. No. 6,263,026 has been abandoned. Continuation application Ser. No. 12/338,647, filed Dec. 18, 2008, Continuation application Ser. Nos. 12/343,797, 12/343,839, and 12/343,898, all filed on Dec. 24, 2008. Continuation application Ser. Nos. 12/348,510, 12/348,535, 12/348,539, 12/348,581, 12/348,590, and 12/348,621, all filed on Jan. 5, 2009, and Continuation application Ser. No. 12/497,264, filed on Jul. 2, 2009, are Continuation applications of Ser. No. 11/873,282. Samsung
7742522 05 jan 2009 22 jun 2010 17 jul 2001 17 jul 2021 Signal compressing system [89] file+20: [2029, 1, 5] related_patent+20:[2021, 7, 17] Case Text: CROSS-REFERENCES TO RELATED PATENT APPLICATIONS This is a Continuation Application of application Ser. No. 11/873,282, filed Oct. 16, 2007, now abandoned; which is a Continuation Application of application Ser. No. 10/612,013, filed Jul. 3, 2003, and issued on Nov. 6, 2007, as U.S. Pat. No. 7,292,657; which is a Continuation Application of application Ser. No. 09/703,649, filed Nov. 2, 2000, and issued Jan. 20, 2004, as U.S. Pat. No. 6,680,975; which is a Continuation Application of application Ser. No. 08/024,305, filed Mar. 1, 1993, and issued on Jul. 17, 2001, as U.S. Pat. No. 6,263,026; the disclosures of which are incorporated herein by reference. One (1) Reissue application Ser. No. 10/609,438, filed on Jul. 1, 2003, of U.S. Pat. No. 6,263,026 has been abandoned. Continuation application Ser. No. 12/338,647, filed Dec. 18, 2008 is a Continuation Application of Ser. No. 11/873,282, filed Oct. 16, 2007. Continuation application Ser. Nos. 12/343,797, 12/343,839, and 12/343,898, all filed on Dec. 24, 2008, are Continuation Applications of 11/873,282, filed Oct. 16, 2007. Samsung
7742527 05 jan 2009 22 jun 2010 17 jul 2001 17 jul 2021 Signal compressing system [90] file+20: [2029, 1, 5] related_patent+20:[2021, 7, 17] term extension 0 days Case Text: CROSS-REFERENCES TO RELATED PATENT APPLICATIONS This is a Continuation Application of application Ser. No. 11/873,282, filed Oct. 16, 2007 now abandoned; which is a Continuation Application of application Ser. No. 10/612,013, filed Jul. 3, 2003, and issued on Nov. 6, 2007, as U.S. Pat. No. 7,292,657; which is a Continuation Application of application Ser. No. 09/703,649, filed Nov. 2, 2000, and issued Jan. 20, 2004, as U.S. Pat. No. 6,680,975; which is a Continuation Application of application Ser. No. 08/024,305, filed Mar. 1, 1993, and issued on Jul. 17, 2001, as U.S. Pat. No. 6,263,026; the disclosures of which are incorporated herein by reference. One (1) Reissue application Ser. No. 10/609,438, filed on Jul. 1, 2003, of U.S. Pat. No. 6,263,026 has been abandoned. Continuation application Ser. No. 12/338,647, filed Dec. 18, 2008 is a Continuation Application of Ser. No. 11/873,282, filed Oct. 16, 2007. Continuation application Ser. Nos. 12/343,797, 12/343,839, and 12/343,898, all filed on Dec. 24, 2008, are Continuation Applications of Ser. No. 11/873,282, filed Oct. 16, 2007. Samsung
7764735 02 jul 2009 27 jul 2010 17 jul 2001 17 jul 2021 Signal compressing system [91] file+20: [2029, 7, 2] related_patent+20:[2021, 7, 17] Case Text: CROSS-REFERENCES TO RELATED PATENT APPLICATIONS This is a Continuation Application of application Ser. No. 11/873,282, filed Oct. 16, 2007 now abandoned; which is a Continuation Application of application Ser. No. 10/612,013, filed Jul. 3, 2003, and issued on Nov. 6, 2007, as U.S. Pat. No. 7,292,657; which is a Continuation Application of application Ser. No. 09/703,649, filed Nov. 2, 2000, and issued Jan. 20, 2004, as U.S. Pat. No. 6,680,975; which is a Continuation Application of application Ser. No. 08/024,305, filed Mar. 1, 1993, and issued on Jul. 17, 2001, as U.S. Pat. No. 6,263,026; the disclosures of which are incorporated herein by reference. One (1) Reissue application Ser. No. 10/609,438, filed on Jul. 1, 2003, of U.S. Pat. No. 6,263,026 has been abandoned. Continuation application Ser. No. 11/873,282 was filed on Oct. 16, 2007; Continuation application Ser. No. 12/338,647 was filed on Dec. 18, 2008; Continuation application Ser. Nos. 12/343,898, 12/343,797, and 12/343,839 were filed on Dec. 24, 2008; and Continuation application Ser. Nos. 12/348,590, 12/348,535, 12/343,539, 12/348,581, 12/348,621, 12/348,510 were filed on Jan. 5, 2009. Samsung
7782956 16 nov 2009 24 aug 2010 01 mar 1993 01 mar 2013 Signal compressing system [92] file+20: [2029, 11, 16] related_patent+20:[2013, 3, 1] term extension 0 days Case Text: CROSS-REFERENCES TO RELATED PATENT APPLICATIONS This is a Continuation Application of application Ser. No. 12/574,255, filed Oct. 6, 2009, which is a Continuation Application of Ser. No. 12/348,621, filed Jan. 5, 2009, issued as U.S. Pat. No. 7,616,687 on Nov. 10, 2009, which is a Continuation Application of application Ser. No. 11/873,282, filed Oct. 16, 2007; which is a Continuation Application of application Ser. No. 10/612,013, filed Jul. 3, 2003, and issued on Nov. 6, 2007, as U.S. Pat. No. 7,292,657; which is a Continuation Application of application Ser. No. 09/703,649, filed Nov. 2, 2000, and issued Jan. 20, 2004, as U.S. Pat. No. 6,680,975; which is a Continuation Application of application Ser. No. 08/024,305, filed Mar. 1, 1993, and issued on Jul. 17, 2001, as U.S. Pat. No. 6,263,026; the disclosures of which are incorporated herein by reference. One (1) Reissue application Ser. No. 10/609,438, filed on Jul. 1, 2003, of U.S. Pat. No. 6,263,026 has been abandoned. Continuation Application No. Ser. No. 12/338,647, filed Dec. 18, 2008, Continuation Application Nos. Ser. No. 12/343,797, Ser. No. 12/343,839, and Ser. No. 12/343,898, all filed on Dec. 24, 2008, Continuation Application Nos. Ser. No. 12/348,510, Ser. No. 12/348,535, Ser. No. 12/348,539, Ser. No. 12/348,581, Ser. No. 12/348,590, and Ser. No. 12/348,621, all filed on Jan. 5, 2009, and Continuation Application No. Ser. No. 12/497,264, filed on Jul. 2, 2009, are Continuation Applications of Ser. No. 11/873,282. Samsung
7787538 05 jan 2009 31 aug 2010 17 jul 2001 17 jul 2021 Signal compressing system [93] file+20: [2029, 1, 5] related_patent+20:[2021, 7, 17] term extension 0 days Case Text: CROSS-REFERENCES TO RELATED PATENT APPLICATIONS This is a Continuation Application of application Ser. No. 11/873,282, filed Oct. 16, 2007 now abandoned; which is a Continuation Application of application Ser. No. 10/612,013, filed Jul. 3, 2003, and issued on Nov. 6, 2007, as U.S. Pat. No. 7,292,657; which is a Continuation Application of application Ser. No. 09/703,649, filed Nov. 2, 2000, and issued Jan. 20, 2004, as U.S. Pat. No. 6,680,975; which is a Continuation Application of application Ser. No. 08/024,305, filed Mar. 1, 1993, and issued on Jul. 17, 2001, as U.S. Pat. No. 6,263,026; the disclosures of which are incorporated herein by reference. One (1) Reissue application Ser. No. 10/609,438, filed on Jul. 1, 2003, of U.S. Pat. No. 6,263,026 has been abandoned. Continuation application Ser. No. 12/338,647, filed Dec. 18, 2008 is a Continuation Application of Ser. No. 11/873,282, filed Oct. 16, 2007. Continuation application Ser. Nos. 12/343,797, 12/343,839, and 12/343,898, all filed on Dec. 24, 2008, are Continuation Applications of Ser. No. 11/873,282, filed Oct. 16, 2007. Samsung
5418782 06 jan 1994 23 may 1995 30 oct 1992 30 oct 2012 Methods and apparatus for providing virtual service selection in a multi-service communications system [94] file+20: [2014, 1, 6] related_patent+20:[2012, 10, 30] grant+17:[2012, 5, 23] Case Text: CROSS REFERENCE TO RELATED APPLICATIONS This is a continuation-in-part of U.S. patent application Ser. No. 08/027,782, filed Mar. 8, 1993, now U.S. Pat. No. 5,359,601 entitled "Apparatus Providing Dynamic Virtual Service Selection in a Multi-Service Communications System" and of U.S. patent application Ser. No. 07/968,846, filed Oct. 30, 1992, now U.S. Pat. No. 5,400,401 entitled "System and Method for Transmitting a Plurality of Digital Services", both of which are hereby incorporated by reference. Scientific Atlanta
5420866 29 mar 1994 30 may 1995 29 mar 1994 29 mar 2014 Methods for providing conditional access information to decoders in a packet-based multiplexed communications system [95] file+20: [2014, 3, 29] grant+17:[2012, 5, 30] Scientific Atlanta
5457701 06 jan 1994 10 oct 1995 06 jan 1994 06 jan 2014 Method for indicating packet errors in a packet-based multi-hop communications system [96] file+20: [2014, 1, 6] grant+17:[2012, 10, 10] Scientific Atlanta
4864393 31 may 1988 05 sep 1989 31 may 1988 31 may 2008 Motion vector estimation in television images [97] file+20: [2008, 5, 31] grant+17:[2006, 9, 5] Case Text: CROSS-REFERENCE TO RELATED APPLICATIONS This application is related to the following applications for U.S. Letters Patent, each of which was filed concurrently herewith, that is, on May 31, 1988, and has a common assignee herewith: Ser. No. 07/199,680 Ser. No. 07/199,681 Ser. No. 07/199,682 Ser. No. 07/200,421 Ser. No. 07/200,503 Ser. No. 07/200,531 Ser. No. 07/200,562. Sony
RE37222 12 oct 1990 21 jul 1992 12 oct 1990 12 oct 2010 Video signal transmitting system Reissue of 05132792 filed 19 jul 1994 granted 12 jun 2001 [98] file+20: [2010, 10, 12] related_patent+20:[2010, 10, 32] grant+17:[2009, 7, 21] Sony
5191436 30 apr 1991 02 mar 1993 30 apr 1991 30 apr 2011 Method for recording coded motion picture data [99] file+20: [2011, 4, 30] grant+17:[2010, 3, 2] Sony
5291486 07 aug 1992 01 mar 1994 07 aug 1992 07 aug 2012 Data multiplexing apparatus and multiplexed data demultiplexing apparatus [100] file+20: [2012, 8, 7] grant+17:[2011, 3, 1] Sony
5298991 24 jul 1992 29 mar 1994 24 jul 1992 24 jul 2012 Variable length coding apparatus and method for motion vector [101] file+20: [2012, 7, 24] grant+17:[2011, 3, 29] Sony
5343248 16 jul 1992 30 aug 1994 16 jul 1992 16 jul 2012 Moving image compressing and recording medium and moving image data encoder and decoder [102] file+20: [2012, 7, 16] grant+17:[2011, 8, 30] Sony
5428396 27 dec 1993 27 jun 1995 24 jul 1992 24 jul 2012 Variable length coding/decoding method for motion vectors [103] file+20: [2013, 12, 27] related_patent+20:[2012, 7, 24] grant+17:[2012, 6, 27] Case Text: This application is a continuation-in-part of U.S. patent application Ser. No. 07/918,010, filed on Jul. 24, 1992, now U.S. Pat. No. 5,293,991. Sony
5461420 17 sep 1993 24 oct 1995 17 sep 1993 17 sep 2013 Apparatus for coding and decoding a digital video signal derived from a motion picture film source [104] file+20: [2013, 9, 17] grant+17:[2012, 10, 24] Sony
5481553 28 feb 1994 02 jan 1996 28 feb 1994 28 feb 2014 Methods and apparatus for preventing rounding errors when transform coefficients representing a motion picture signal are inversely transformed [105] file+20: [2014, 2, 28] grant+17:[2013, 1, 2] Sony
5510840 15 may 1995 23 apr 1996 30 aug 1993 30 aug 2013 Methods and devices for encoding and decoding frame signals and recording medium therefor [106] file+20: [2015, 5, 15] related_patent+20:[2013, 8, 30] grant+17:[2013, 4, 23] Case Text: This is a continuation of application Ser. No. 08/098,280 filed on Aug. 30, 1993 abandoned. Sony
5539466 26 sep 1994 23 jul 1996 32 apr 1993 23 jul 2013 Efficient coding apparatus for picture signal and decoding apparatus therefor [107] file+20: [2014, 9, 26] related_patent+20:[2013, 4, 32] grant+17:[2013, 7, 23] Case Text: This application is a continuation of application Ser. No. 08/030,019, filed as PCT/JP92/00956, Jul. 28, 1992 published as WO93/03578, Feb. 18, 1993, now abandoned. Sony
5543847 13 dec 1993 06 aug 1996 13 dec 1993 13 dec 2013 Picture coding and decoding method for random accessing [108] file+20: [2013, 12, 13] grant+17:[2013, 8, 6] Sony
5559557 28 sep 1993 24 sep 1996 28 sep 1993 28 sep 2013 Motion video coding with adaptive precision for DC component coefficient quantization and variable length coding [109] file+20: [2013, 9, 28] grant+17:[2013, 9, 24] Sony
5663763 18 oct 1993 02 sep 1997 18 oct 1993 02 sep 2014 Picture signal encoding method and apparatus and picture signal decoding method and apparatus [110] file+20: [2013, 10, 18] grant+17:[2014, 9, 2] Sony
5666461 30 may 1995 09 sep 1997 21 apr 1993 09 sep 2014 High efficiency encoding and decoding of picture signals and recording medium containing same [111] file+20: [2015, 5, 30] related_patent+20:[2013, 4, 21] grant+17:[2014, 9, 9] Case Text: This application is a division of application Ser. No. 08/084,642, filed Jun. 29, 1993 which is a continuation-in-part of application Ser. No. 08/030,019, filed in the United States Patent and Trademark Office on Apr. 21, 1993, and corresponding to International Application No. PCT/JP92/00956, the disclosure of which is incorporated herein. Sony
5701164 19 dec 1996 23 dec 1997 32 dec 1994 32 dec 2014 Macroblock coding including difference between motion vectors [112] file+20: [2016, 12, 19] related_patent+20:[2014, 12, 32] Case Text: This application is a continuation of application Ser. No. 08/290,888, filed as PCT/JP94/00473 Mar. 24, 1994, now abandoned. Sony
5946042 02 jul 1997 31 aug 1999 19 dec 1996 19 dec 2016 Macroblock coding including difference between motion vectors [113] file+20: [2017, 7, 2] related_patent+20:[2016, 12, 19] Case Text: This application is a division of application Ser. No. 08/770,585, filed Dec. 19, 1996, now U.S. Pat. No. 5,701,164, which is a continuation of application Ser. No. 08/290,888, filed Dec. 8, 1994. Sony
5982437 15 oct 1993 09 nov 1999 15 oct 1993 09 nov 2016 Coding method and system, and decoding method and system [114] file+20: [2013, 10, 15] grant+17:[2016, 11, 9] Sony
6040863 18 dec 1998 21 mar 2000 19 dec 1996 19 dec 2016 Method of coding and decoding motion vector and apparatus therefor, and method of coding and decoding picture signal and apparatus therefor [115] file+20: [2018, 12, 18] related_patent+20:[2016, 12, 19] Case Text: This is a divisional of prior U.S. application Ser. No. 08/886,804 filed Jul. 2, 1997, now U.S. Pat. No. 5,946,042, which is a divisional of U.S. application Ser. No. 08/770,585 filed Dec. 19, 1996, now U.S. Pat. No. 5,701,164, which is a continuation of U.S. application Ser. No. 08/290,888 filed Dec. 8, 1994, now abandoned, which is a 371 of PCT/JP94/00473 filed Mar. 24, 1994. Sony
6160849 30 may 1995 12 dec 2000 22 mar 1993 12 dec 2017 Selectable field and frame based predictive video coding [116] file+20: [2015, 5, 30] related_patent+20:[2013, 3, 22] grant+17:[2017, 12, 12] Case Text: This application is a division of application Ser. No. 08/084,642 , filed Jun. 29, 1993. This is a continuation-in-part of application Ser. No. 08/030,019, filed in the United States Patent and Trademark Office on Mar. 22, 1993, and corresponding to International Application No. PCT/JP92/00956, the disclosure of which is incorporated herein. Sony
7627041 30 jun 2005 01 dec 2009 13 jan 1994 16 mar 2015 Apparatus for encoding and decoding header data in picture signal transmission [117] file+20: [2025, 6, 30] related_patent+20:[2014, 1, 13] term extension 427 days Case Text: This is a continuation of application Ser. No. 08/634,122, filed Apr. 19, 1996 now U.S. Pat. No. 7,075,991, the entirety of which is incorporated herein by reference, which is a continuation of application Ser. No. 08/180,613 filed Jan. 13, 1994 now abandoned, the entirety of which is incorporated herein by reference. Sony
RE35093 03 dec 1990 09 mar 1993 03 dec 1990 03 dec 2010 Systems and methods for coding even fields of interlaced video sequences Reissue of 05193004 filed 09 dec 1994 granted 21 nov 1995 [118] file+20: [2010, 12, 3] related_patent+20:[2010, 12, 32] grant+17:[2010, 3, 9] Case Text: .Iadd.This application is a continuation of application Ser. No. 08/218,970, filed on Mar. 25, 1994, now abandoned, and is a reissue of U.S. Pat. No. 5,193,004. .Iaddend. The Trustees of Columbia University in the City of New York
4800432 24 oct 1986 24 jan 1989 24 oct 1986 24 oct 2006 Video Difference key generator [119] file+20: [2006, 10, 24] grant+17:[2006, 1, 24] Thomson
4969055 25 aug 1988 06 nov 1990 32 aug 1986 06 nov 2007 Method for recording and/or reproducing digitally coded signals with interframe and interframe coding [120] file+20: [2008, 8, 25] related_patent+20:[2006, 8, 32] grant+17:[2007, 11, 6] Case Text: This application is a continuation of application Ser. No. 06/901,535, filed Aug. 8th, 1986now abandoned. Thomson
5289276 19 jun 1992 22 feb 1994 19 jun 1992 19 jun 2012 Method and apparatus for conveying compressed video data over a noisy communication channel [121] file+20: [2012, 6, 19] grant+17:[2011, 2, 22] Thomson
5365272 02 jul 1993 15 nov 1994 19 jun 1992 19 jun 2012 Method for formatting compressed video data into transport cells [122] file+20: [2013, 7, 2] related_patent+20:[2012, 6, 19] grant+17:[2011, 11, 15] Case Text: This is a division of Ser. No. 07/901,045, filed Jun. 19, 1992. The present invention relates to a method and apparatus for segmenting compressed video data into cells or packets for transmission in a manner to allow a receiver to rapidly recover from occurrences of missing data or corrupted data. Thomson
5381181 13 may 1993 10 jan 1995 13 may 1993 13 may 2013 Clock recovery apparatus as for a compressed video signal [123] file+20: [2013, 5, 13] grant+17:[2012, 1, 10] Thomson
5422676 22 oct 1993 06 jun 1995 22 oct 1993 22 oct 2013 System for coding an image representative signal [124] file+20: [2013, 10, 22] grant+17:[2012, 6, 6] Thomson
5442400 29 apr 1993 15 aug 1995 29 apr 1993 29 apr 2013 Error concealment apparatus for MPEG-like video data [125] file+20: [2013, 4, 29] grant+17:[2012, 8, 15] Thomson
5459789 22 apr 1994 17 oct 1995 22 apr 1994 22 apr 2014 Packet TV program component detector [126] file+20: [2014, 4, 22] grant+17:[2012, 10, 17] Thomson
5483287 03 aug 1994 09 jan 1996 19 jun 1992 09 jan 2013 Method for forming transport cells for conveying compressed video data [127] file+20: [2014, 8, 3] related_patent+20:[2012, 6, 19] grant+17:[2013, 1, 9] Case Text: This is a continuation of Ser. No. 08/085,364 filed 2 Jul. 1993, now U.S. Pat. No.5,365,272, which is a division of Ser. No. 901,045 filed Jun. 19, 1992, (now U.S. Pat. No. 5,289,276). Thomson
5565923 22 aug 1995 15 oct 1996 32 may 1993 32 may 2013 Apparatus for formatting a digital signal to include multiple time stamps for system synchronization [128] file+20: [2015, 8, 22] related_patent+20:[2013, 5, 32] Case Text: This is a division of Ser. No. 08/060,924 filed May 13, 1993 now U.S. Pat. No. 5,486,864. This invention relates to a method and apparatus for providing a clock signal at a signal decompression apparatus, which clock signal is substantially frequency locked to a clock signal at a encoding apparatus. Thomson
5784110 23 may 1996 21 jul 1998 30 nov 1993 21 jul 2015 Data processor for assembling transport data packets [129] file+20: [2016, 5, 23] pct_file+20:[2013, 11, 30] grant+17:[2015, 7, 21] Thomson
7020204 08 feb 2002 28 mar 2006 30 dec 1988 30 jan 2010 Adaptive method of encoding and decoding a series of pictures by transformation, and devices for implementing this method [130] file+20: [2022, 2, 8] related_patent+20:[2008, 12, 30] term extension 396 days Case Text: CROSS REFERENCE TO RELATED APPLICATIONS This application is a divisional of application Ser. No. 09/978,376, filed Oct. 17, 2001, now U.S. Pat. No. 6,563,875, which is a continuation of application Ser. No. 07/408,515, filed Nov. 30, 1995 now abandoned claiming the benefit and priority of PCT International Application No. PCT/FR88/00649, filed Dec. 30, 1988, and French Application No. 87 18371, filed Dec. 30, 1987. Thomson
7334248 24 may 2002 19 feb 2008 24 may 2002 18 mar 2026 Conditional access filter as for a packet video signal inverse transport system [131] file+20: [2022, 5, 24] term extension 1394 days Thomson
5317397 29 may 1992 31 may 1994 29 may 1992 29 may 2012 Predictive coding using spatial-temporal filtering and plural motion vectors [132] file+20: [2012, 5, 29] grant+17:[2011, 5, 31] Toshiba
5424779 24 nov 1993 13 jun 1995 32 may 1992 13 jun 2012 Video coding apparatus [133] file+20: [2013, 11, 24] related_patent+20:[2012, 5, 32] grant+17:[2012, 6, 13] Case Text: This is a continuation, of application Ser. No. 07/890,705, filed on May 29, 1992 now U.S. Pat. No. 5,317,397. Toshiba
5467136 17 feb 1994 14 nov 1995 32 may 1992 14 nov 2012 Video decoder for determining a motion vector from a scaled vector and a difference vector [134] file+20: [2014, 2, 17] related_patent+20:[2012, 5, 32] grant+17:[2012, 11, 14] Case Text: CROSS-REFERENCE TO THE RELATED APPLICATION This application is a continuation-in-part of U.S. patent application Ser. No. 07/890,705 filed May 29, 1992, now U.S. Pat. No. 5,317,397. Toshiba
5742344 03 apr 1996 21 apr 1998 32 may 1992 32 may 2012 Motion compensated video decoding method and system for decoding a coded video signal using spatial and temporal filtering [135] file+20: [2016, 4, 3] related_patent+20:[2012, 5, 32] Case Text: This is a Division of application Ser. No. 08/295,421 filed on Aug. 25, 1994, now U.S. Pat. No. 5,5,41,661, which is a continuation of application Ser. No. 08/156,709 filed on Nov. 24, 1993, now U.S. Pat. No. 5,424,779, which is a continuation of application Ser. No. 07/890,705 filed May 29, 1992, now U.S. Pat. No. 5,317,397. Toshiba
5986713 11 jun 1998 16 nov 1999 32 may 1992 32 may 2012 Video coding apparatus using inter-field prediction [136] file+20: [2018, 6, 11] related_patent+20:[2012, 5, 32] Case Text: This application is a Continuation of application Ser. No. 09/054,403, filed on Apr. 3, 1998; which is a Division of Ser. No. 08/626,922 filed on Apr. 3, 1996, now U.S. Pat. No. 5,754,231; which is a Division of Ser. No. 08/295,421, filed on Aug. 25, 1994, now U.S. Pat. No. 5,541,661; which is a Continuation of Ser. No. 08/156,709, filed on Nov. 24, 1993, now U.S. Pat. No. 5,424,779; which is a Continuation of Ser. No. 07/890,705, filed on May 29, 1992, now U.S. Pat. No. 5,317,397. Toshiba
RE34965 18 jan 1990 15 jan 1991 18 jan 1990 18 jan 2010 Inter-frame predictive encoding system with encoded and transmitted prediction error Reissue of 04985768 filed 14 jan 1993 granted 13 jun 1995 [137] file+20: [2010, 1, 18] related_patent+20:[2010, 1, 32] grant+17:[2008, 1, 15] Victor Company
RE35158 26 apr 1990 01 jan 1991 16 jan 1990 16 jan 2010 Apparatus for adaptive inter-frame predictive encoding of video signal Reissue of 04982285 filed 28 dec 1992 granted 20 feb 1996 [138] file+20: [2010, 4, 26] related_patent+20:[2010, 1, 16] grant+17:[2008, 1, 1] Case Text: The present application is a .Iadd.reissue of application No. 514,015 now U.S. Pat. No. 4,982,285, which is a .Iaddend.continuation-in-part of a U.S. patent application (application number 465,747) with filing date Jan. 16, 1990.Iadd., now U.S. Pat. No. 4,985,768.Iaddend.. Victor Company
RE36822 17 jun 1996 05 may 1998 06 nov 1992 06 nov 2012 Moving image signal coding apparatus and coded signal decoding apparatus Reissue of 05748784 filed 02 oct 1998 granted 15 aug 2000 [139] file+20: [2016, 6, 17] related_patent+20:[2012, 11, 6] Case Text: This is a continuation of application Ser. No. 08/324,481, filed Oct. 18, 1994 which was abandoned upon the filing hereof, and which, in turn, is a continuation of application Ser. No. 07/972,564, filed Nov. 6, 1992 now abandoned. Victor Company
5103307 18 jan 1991 07 apr 1992 18 jan 1991 18 jan 2011 Interframe predictive coding/decoding system for varying interval between independent frames [140] file+20: [2011, 1, 18] grant+17:[2009, 4, 7] Victor Company
5175618 30 oct 1991 29 dec 1992 30 oct 1991 30 oct 2011 Compression method for interlace moving image signals [141] file+20: [2011, 10, 30] grant+17:[2009, 12, 29] Victor Company
5341457 20 aug 1993 23 aug 1994 30 dec 1988 23 aug 2011 Perceptual coding of audio signals [142] file+20: [2013, 8, 20] related_patent+20:[2008, 12, 30] grant+17:[2011, 8, 23] Case Text: This application is a continuation of application Ser. No. 07/962,151, filed on Oct. 16, 1992 abandoned which is a cont. of Ser. No. 07/844,967 filed Feb. 28, 1992, now abandoned, which is a continuation of application Ser. No. 07/292,598 filed on Dec. 30, 1988, now abandoned, and claims priority thereto. Alcatel-Lucent
RE39080 22 sep 1994 06 may 1997 30 dec 1988 06 may 2014 Rate loop processor for perceptual encoder/decoder Reissue of 05627938 filed 13 aug 2002 granted 25 apr 2006 [143] file+20: [2014, 9, 22] related_patent+20:[2008, 12, 30] grant+17:[2014, 5, 6] Case Text: This .Iadd.is a reissue .Iaddend.application .Iadd.of U.S. Pat. No. 5,627,938 filed Sep. 22, 1994 as application Ser. No. 08/310,898 which .Iaddend.is a continuation of application Ser. No. 07/844,811, filed on Mar. 2, 1992, now abandoned.Iadd., which is a continuation-in-part of application Ser. No. 07/844,967 filed Feb. 28, 1992, now abandoned, which is a continuation of Ser. No. 07/292,598 filed Dec. 30, 1988 now abandoned.Iaddend.. Alcatel-Lucent
4972484 21 jul 1988 20 nov 1990 20 nov 1987 20 nov 2007 Method of transmitting or storing masked sub-band coded audio signals [144] file+20: [2008, 7, 21] pct_file+20:[2007, 11, 20] grant+17:[2007, 11, 20] Audio MPEG, Inc
5214678 31 may 1990 25 may 1993 31 may 1990 31 may 2010 Digital transmission system using subband coding of a digital signal [145] file+20: [2010, 5, 31] grant+17:[2010, 5, 25] Audio MPEG, Inc
5323396 21 dec 1992 21 jun 1994 01 jun 1990 21 jun 2011 Digital transmission system, transmitter and receiver for use in the transmission system [146] file+20: [2012, 12, 21] related_patent+20:[2010, 6, 1] grant+17:[2011, 6, 21] Case Text: This is a continuation of application Ser. No. 07/532,462 filed Jun. 1, 1990 now abandoned. Audio MPEG, Inc
5539829 07 jun 1995 23 jul 1996 01 jun 1990 23 jul 2013 Subband coded digital transmission system using some composite signals [147] file+20: [2015, 6, 7] related_patent+20:[2010, 6, 1] grant+17:[2013, 7, 23] Case Text: This application is a division of U.S. patent application Ser. No. 08/173,850 filed Dec. 27, 1993, which is continuation of U.S. patent application Ser. No. 07/997,158 filed Dec. 21, 1992, now U.S. Pat. No. 5,323,396, which is a continuation of application Ser. No. 07/532,462 filed on Jun. 1, 1990 by Gerardus C. P. Lokhoff for DIGITAL TRANSMISSION SYSTEM, TRANSMITTER AND RECEIVER FOR USE IN THE TRANSMISSION SYSTEM, AND RECORD CARRIER OBTAINED BY MEANS OF THE TRANSMITTER IN THE FORM OF A RECORDING DEVICE, now abandoned. Audio MPEG, Inc
5606618 27 dec 1993 25 feb 1997 01 jun 1990 25 feb 2014 Subband coded digital transmission system using some composite signals [148] file+20: [2013, 12, 27] related_patent+20:[2010, 6, 1] grant+17:[2014, 2, 25] Case Text: This application is a continuation of U.S. patent application Ser. No. 07/997,158 filed Dec. 21, 1992 now U.S Pat. No. 5,32,396, which is a continuation of application Ser. No. 07/532,462 filed on Jun. 1, 1990 by Gerardus C. P. Lokhoff for DIGITAL TRANSMISSION SYSTEM, TRANSMITTER AND RECEIVER FOR USE IN THE TRANSMISSION SYSTEM, AND RECORD CARRIER OBTAINED BY MEANS OF THE TRANSMITTER IN THE FORM OF A RECORDING DEVICE, now abandoned. Audio MPEG, Inc
5530655 06 jun 1995 25 jun 1996 01 jun 1990 25 jun 2013 Digital sub-band transmission system with transmission of an additional signal [149] file+20: [2015, 6, 6] related_patent+20:[2010, 6, 1] grant+17:[2013, 6, 25] Case Text: This application is a continuation of application Ser. No. 08/190,807, filed Feb. 1, 1994, now abandoned, which is a continuation of co-pending U.S. patent application Ser. No. 08/173,850 filed Dec. 27, 1993, by Gerardus C. P. Lokhoff, Y. F. Dehery, and G. Stoll for SUBBAND CODED DIGITAL TRANSMISSION SYSTEM USING SOME COMPOSITE SIGNALS, which is a continuation of co-pending U.S. patent application Ser. No. 07/997,158 filed Dec. 21, 1992, now U.S. Pat. No. 5,323,396 issued Jun. 21, 1994, which is a continuation of application Ser. No. 07/532,462, filed on Jun. 1, 1990 by Gerardus C. P. Lokhoff for DIGITAL TRANSMISSION SYSTEM, TRANSMITTER AND RECEIVER FOR USE IN THE TRANSMISSION SYSTEM, AND RECORD CARRIER OBTAINED BY MEANS OF THE TRANSMITTER IN THE FORM OF A RECORDING DEVICE, now abandoned. Audio MPEG, Inc
5777992 07 jun 1995 07 jul 1998 01 jun 1990 07 jul 2015 Decoder for decoding and encoded digital signal and a receiver comprising the decoder [150] file+20: [2015, 6, 7] related_patent+20:[2010, 6, 1] grant+17:[2015, 7, 7] Case Text: This application is a continuation of U.S. patent application Ser. No. 08/173,850 filed Dec. 27, 1993, now U.S. Pat. No. 5,606,618, which is a continuation of U.S. patent application Ser. No. 07/997,158 filed Dec. 21, 1992, now U.S. Pat. No. 5,323,396, which is a continuation of application Ser. No. 07/532,462 filed on Jun. 1, 1990 by Gerardus C. P. Lokhoff for DIGITAL TRANSMISSION SYSTEM, TRANSMITTER AND RECEIVER FOR USE IN THE TRANSMISSION SYSTEM, AND RECORD CARRIER OBTAINED BY MEANS OF THE TRANSMITTER IN THE FORM OF A RECORDING DEVICE, now abandoned. Audio MPEG, Inc
6289308 08 mar 2000 11 sep 2001 01 jun 1990 01 jun 2010 Encoded wideband digital transmission signal and record carrier recorded with such a signal [151] file+20: [2020, 3, 8] related_patent+20:[2010, 6, 1] term extension 0 days Case Text: This application is a division of U.S. patent application Ser. No. 08/488,536 filed Jun. 7, 1995 now abandoned, which is a division of application Ser. No. 08/173,850 filed Dec. 27, 1993, now U.S. Pat. No. 5,606,618, which is a continuation of application Ser. No. 07/997,158 filed Dec. 21, 1992, now U.S. Pat. No. 5,323,396, which is a continuation of application Ser. No. 07/532,462 filed on Jun. 1, 1990 now abandoned, by Gerardus C. P. Lokhoff for DIGITAL TRANSMISSION SYSTEM, TRANSMITTER AND RECEIVER FOR USE IN THE TRANSMISSION SYSTEM, AND RECORD CARRIER OBTAINED BY MEANS OF THE TRANSMITTER IN THE FORM OF A RECORDING DEVICE, now abandoned. Audio MPEG, Inc
5481643 24 apr 1995 02 jan 1996 18 mar 1993 18 mar 2013 Transmitter, receiver and record carrier for transmitting/receiving at least a first and a second signal component [152] file+20: [2015, 4, 24] related_patent+20:[2013, 3, 18] grant+17:[2013, 1, 2] Case Text: This is a continuation of application Ser. No. 08/180,004, filed Jan. 11, 1994 which is a continuation-in-part of application Ser. No. 08/032,915, filed Mar. 18, 1993, both now abandoned. Audio MPEG, Inc
5544247 25 oct 1994 06 aug 1996 25 oct 1994 25 oct 2014 Transmission and reception of a first and a second main signal component [153] file+20: [2014, 10, 25] grant+17:[2013, 8, 6] Audio MPEG, Inc
5610985 21 jan 1994 11 mar 1997 21 jan 1994 11 mar 2014 Digital 3-channel transmission of left and right stereo signals and a center signal [154] file+20: [2014, 1, 21] grant+17:[2014, 3, 11] Audio MPEG, Inc
5740317 30 aug 1995 14 apr 1998 21 jul 1992 14 apr 2015 Process for finding the overall monitoring threshold during a bit-rate-reducing source coding [155] file+20: [2015, 8, 30] related_patent+20:[2013, 9, 17] pct_file+20:[2012, 7, 21] grant+17:[2015, 4, 14] Case Text: This application is a continuation of application Ser. No. 08/119,109, filed Sep. 17, 1993 (now abandoned). Audio MPEG, Inc
5878080 07 feb 1997 02 mar 1999 07 feb 1997 07 feb 2017 N-channel transmission, compatible with 2-channel transmission and 1-channel transmission [156] file+20: [2017, 2, 7] Audio MPEG, Inc
5960037 09 apr 1997 28 sep 1999 09 apr 1997 09 apr 2017 Encoding of a plurality of information signals [157] file+20: [2017, 4, 9] Audio MPEG, Inc
5991715 31 aug 1995 23 nov 1999 31 aug 1995 31 aug 2015 Perceptual audio signal subband coding using value classes for successive scale factor differences [158] file+20: [2015, 8, 31] Case Text: This application is a Continuation of application Ser. No. 08/094,028, filed Jul. 26, 1993 (now abandoned), which is a 371 of PCT/EP91/01211 Jun. 6, 1991. Audio MPEG, Inc
6023490 09 apr 1997 08 feb 2000 09 apr 1997 09 apr 2017 Encoding apparatus for encoding a plurality of information signals [159] file+20: [2017, 4, 9] Audio MPEG, Inc
4821260 16 dec 1987 11 apr 1989 16 dec 1987 16 dec 2007 Transmission system [160] file+20: [2007, 12, 16] grant+17:[2006, 4, 11] Thomson
4942607 03 feb 1988 17 jul 1990 03 feb 1988 03 feb 2008 Method of transmitting an audio signal [161] file+20: [2008, 2, 3] grant+17:[2007, 7, 17] Thomson
5214742 01 oct 1990 25 may 1993 26 jan 1990 25 may 2010 Method for transmitting a signal [162] file+20: [2010, 10, 1] pct_file+20:[2010, 1, 26] grant+17:[2010, 5, 25] Thomson
5227990 17 jan 1992 13 jul 1993 17 jan 1992 17 jan 2012 Process for transmitting and receiving a signal [163] file+20: [2012, 1, 17] grant+17:[2010, 7, 13] Thomson
5384811 24 aug 1992 24 jan 1995 08 oct 1990 24 jan 2012 Method for the transmission of a signal [164] file+20: [2012, 8, 24] pct_file+20:[2010, 10, 8] grant+17:[2012, 1, 24] Thomson
5736943 31 may 1996 07 apr 1998 08 jul 1994 07 apr 2015 Method for determining the type of coding to be selected for coding at least two signals [165] file+20: [2016, 5, 31] pct_file+20:[2014, 7, 8] grant+17:[2015, 4, 7] Thomson
5455833 26 apr 1993 03 oct 1995 25 oct 1990 03 oct 2012 Process for the detecting of errors in the transmission of frequency-coded digital signals [166] file+20: [2013, 4, 26] pct_file+20:[2010, 10, 25] grant+17:[2012, 10, 3] Thomson
5559834 15 apr 1994 24 sep 1996 06 oct 1992 24 sep 2013 Method of reducing crosstalk in processing of acoustic or optical signals [167] file+20: [2014, 4, 15] pct_file+20:[2012, 10, 6] grant+17:[2013, 9, 24] Thomson
5321729 26 apr 1993 14 jun 1994 24 jun 1991 24 jun 2011 Method for transmitting a signal [168] file+20: [2013, 4, 26] related_patent+20:[2011, 6, 24] grant+17:[2011, 6, 14] Case Text: This is a continuation of application Ser. No. 07/718,402, filed Jun. 24, 1991, now abandoned. Thomson
5706309 02 may 1995 06 jan 1998 02 nov 1993 06 jan 2015 Process for transmitting and/or storing digital signals of multiple channels [169] file+20: [2015, 5, 2] pct_file+20:[2013, 11, 2] grant+17:[2015, 1, 6] Thomson
5701346 12 sep 1996 23 dec 1997 02 feb 1995 02 feb 2015 Method of coding a plurality of audio signals [170] file+20: [2016, 9, 12] pct_file+20:[2015, 2, 2] grant+17:[2014, 12, 23] Thomson
5742735 25 aug 1994 21 apr 1998 20 apr 1989 21 apr 2015 Digital adaptive transformation coding method [171] file+20: [2014, 8, 25] related_patent+20:[2009, 4, 20] grant+17:[2015, 4, 21] Case Text: This is a continuation of application Ser. No. 08/133,273 filed Oct. 7, 1993 now abandoned which is a continuation of Ser. No. 07/982,063 filed Nov. 25, 1992 now abandoned, which is a continuation of Ser. No. 07/716,769 filed Jun. 19, 1991 now abandoned, which is a continuation of Ser. No. 07/347,806, filed as PCT/DE88/00618, Oct. 6, 1988 published as WO89/03574, Apr. 20, 1989 now abandoned. Thomson
5812672 15 dec 1994 22 sep 1998 13 oct 1992 22 sep 2015 Method for reducing data in the transmission and/or storage of digital signals of several dependent channels [172] file+20: [2014, 12, 15] pct_file+20:[2012, 10, 13] grant+17:[2015, 9, 22] Thomson
5579430 26 jan 1995 26 nov 1996 32 dec 1991 26 nov 2013 Digital encoding process [173] file+20: [2015, 1, 26] related_patent+20:[2011, 12, 32] grant+17:[2013, 11, 26] Case Text: This application is a continuation of application Ser. No. 08/169,768, filed on Dec. 20, 1993, now abandoned, which is a continuation of application Ser. No. 07/768,239, filed as PCT/DE90/00286 on Apr. 12, 1990, which is now abandoned. Thomson
6185539 26 may 1998 06 feb 2001 19 feb 1997 19 feb 2017 Process of low sampling rate digital encoding of audio signals [174] file+20: [2018, 5, 26] pct_file+20:[2017, 2, 19] Thomson
6009399 16 apr 1997 28 dec 1999 16 apr 1997 16 apr 2017 Method and apparatus for encoding digital signals employing bit allocation using combinations of different threshold models to achieve desired bit rates [175] file+20: [2017, 4, 16] Thomson
5924060 20 mar 1997 13 jul 1999 14 jan 1991 14 jan 2011 Digital coding process for transmission or storage of acoustical signals by transforming of scanning values into spectral coefficients [176] file+20: [2017, 3, 20] related_patent+20:[2011, 1, 14] Case Text: This application is a continuation of application Ser. No. 08/650,896, filed on May 17, 1996, (now abandoned) which was a continuation of application Ser. No. 08/519,620, filed on Sep. 25, 1995, (now abandoned) which was a continuation of application Ser. No. 07/977,748, filed on Nov. 16, 1992, (now abandoned), which was a continuation of application Ser. No. 07/816,528, filed on Dec. 30, 1991, (now abandoned), which was a continuation of application Ser. No. 07/640,550, filed on Jan. 14, 1991, (now abandoned), which was a continuation of application Ser. No. 07/177,550, filed on Apr. 4, 1991, (now abandoned) as international application serial No. PCT/DE87/00384, filed Aug. 29, 1987, claiming priority to foreign appl. No. P3629434.9, filed Aug. 29, 1986. Thomson
5703999 18 nov 1996 30 dec 1997 32 feb 1995 32 feb 2015 Process for reducing data in the transmission and/or storage of digital signals from several interdependent channels [177] file+20: [2016, 11, 18] related_patent+20:[2015, 2, 32] Case Text: This application is a continuation of application Ser. No. 08/338,618, filed as PCT/DE93/00448 May 18, 1993. Thomson

How many seconds of bitrate buffer is allowed in the restriction of MPEG-2 DVD?[edit]

In compressing Your materials into MPEG2 format (for DVD), for the best results You should go with VARIABLE 2 PASS compression, where the lowest bitrate shouldn't be under 1.5 Mb/s, and the hightest 8 Mb/s...

There's nothing wrong with going under 1.5Mb/s. Some scenes CANNOT be coded with a bitrate higher than this. Many others will look just fine below this bitrate. Snacky 17:57, 27 May 2006 (UTC)

Although, some aplications will allow You even 12 Mbit/s, and the movie DVD standard bitrate is (not officialy, but "from mouht to mouth") declared maximum 9 Mb/s, You shouldn't go above 8 Mbit/s...

The problem is that players aren't required by the spec to play stuff like this, and many of them won't. If your player plays it, more power to you. The spec (officially) allows a maximum video bitrate of about 9.8mbit/s. Feel free to go above 8mbit/s, as any compliant player will support this with no problem. Read the DVD article. Snacky 17:57, 27 May 2006 (UTC)

So, 8 would be the anwer:), I guess!

PS

Higher bitrates can be as harmful as too low bitrates, 'cause high bitrates can be too demanding for the reading equipment (doesn't matter if You try to watch it from hard disk or from real stand-alone DVD player), you can expect some twitching and trambling...

"maximum bitrate" is only a meaningful in the context of a buffer size, which is 1835 kbits in the case of DVD. In theory, this means local bitrate may actually exceed the allowed max (9800kbit/s) as long as it does so for a period of less than about 0.187 seconds, and as long as it doesn't fill up the 1835 kbit buffer. Snacky 17:57, 27 May 2006 (UTC)

Improvements to this article[edit]

Request made by Daniel.Cardenas on the article page but moved to here.

"Please help improve this article with a more novice introduction. A simple diagram that describes compression would be very helpful. For example compression is achieved thru time bases similarities in the frames and spacial, nearby pixels, similarities."

Maybe this information is elsewhere in Wikipedia in the form of a simple summary (rather than spread out descriptions). AlyM 08:50, 22 April 2006 (UTC)

It think this request works better in the main article. Perhaps as a footer or something. Something like the standard wikipedia text that says this is a stub. The article in in current state is rated poor by me for the average person. It needs much more introductory material. Daniel.Cardenas
Sure, using an appropriate stub-type marker or something would be fine (perhaps {{cleanup}}, {{confusing}} or {{technical}}), but not having a section in the article requesting the change. Article content vs. meta-content or something. AlyM 17:37, 22 April 2006 (UTC)

Split off "Video coding"[edit]

Since almost all modern motion compensated codecs use the same techniques, there should be a separate article about it. And it could start based off of the "Video coding (simplified)" section. That exact section could be copied word-for-word to the much leaner MPEG-1 article, and it'd be equally accurate. Snacky 19:34, 28 May 2006 (UTC)

Definately, a simple and generic video coding article would be better than having the content here. AlyM 15:30, 29 May 2006 (UTC)

High BitRates[edit]

The bit rates in the tables seem to high. For example 80 Mbps for ATSC. I thought it was more like 20 Mbps for high-def 1080i. GregorLarson 18:35, 10 August 2006 (UTC)

You misunderstood the profile & level charts.
80mbps is the highest bitrate allowed by MP@HL. Therefore, any application that needs LESS than this bitrate could conform to MP@HL.
The Applications on the right side column are intended as examples. I edited the column header in hopes of preventing any more confusion. Snacky 18:54, 10 August 2006 (UTC)

The Panasonic MPEG-2-based HD product bitrate is reported at 300Mbit/s. That's too high; a single-layer HD-DVD is 15gB, which would be 15gB × 1024MB/gB × 8Mbit/MB ÷ 300Mbit/s = 409s = 0:6:49, which does not match the 1:42:00 minimum for HD-DVD with MPEG-2. I am far more inclined to believe it is 20Mbit/s as reported at Comparison of high definition optical disc formats#Technical Details. -- Adam Katz 19:07, 2 October 2007 (UTC)

It's not wrong. As Snacky said, 300Mbps is maximum bit rate allowed in 422P@HL (ISO/IEC 13818-2 table 8-13). An application which conforms to 422P@HL, such as "The Panasonic MPEG-2-based HD product", may and likely use less bit rate. To clarify it, I've added some explanation in the article. Motonari 20:27, 2 October 2007 (UTC)

Intro Block Diagram[edit]

http://en.wikipedia.org/wiki/File:Mpeg.svg The diagram may be misleading as it does not show the lower level containerization of the MPEG PES (Program Elementary Stream) as being a level below TS (DVB Transport Stream). Also, DVB-S2 is an 8 point constellation of QPSK that allows for additional bitrate in the satellite transponder by optimizing the error correction scheme and the Nyguist roll-off factor, but the DVB-S2 System does not modulate MPEG-4 directly as shown. The same MPEG containerization scheme and the same 188/204 DVB Transport Stream Schemes are used. Also, MPEG-4 does appear in DVB-C, DVB-S, and DVB-T (particularly in Italy and Spain) but the higher bandwidth requirements of MPEG-4 HD force fewer PES per carrier. This is a problem that is improved bt DVB-S2, and will be improved by DVB-T2 (coming soon), and DVB-C2 (under definition). Never-the-less, DVB-S, C, and T do carry high definition (not implied by the diagram). 123.192.95.51 (talk) 11:27, 21 December 2009 (UTC) Stan Hemphill, Taipei, Taiwan - 21 Dec 2009

Revised Intro and Video Coding Sections[edit]

I starting looking at this and related articles when a change in the kernel of the Linux operating system caused a program that I use to record digital TV to stop working. In attempting to find a way to get it working again, I sought information about the nature of the incoming signal, e.g., details about MPEG-2 packets. Unfortunately, I found the existing wikipedia articles hard to understand (and I am a retired electronics engineer.) There was lots of technical jargon but little clarity. After some further research elsewhere on the web, I thought that I would see if I could rewrite parts of the current MPEG-2 article to make it clearer.

I rewrote the first paragraph primarily to emphasize the importance of standard. The value of the industries applying this standard is in the hundreds of billions of dollars. The number of viewers who use the standard today or who will start using it in the near future -- most unknowingly, of course -- is probably in the hundreds of millions.

MPEG-2 is not a group of standards. Rather, it is one standard with several parts.

I moved the sentence about patents in the first paragraph to the patent section. The issue of patents is important but I doubt that it is the primary concern of most readers of this article.

I rewrote the section on video compression, primarily, to introduce the technical ideas in a more logical order starting with the basic idea of a digital TV picture.

I added a reference to the ISO site and to a couple of external links that I found helpful. Also, I corrected a minor error in the "See Also" section.

Some further changes seem desirable:

  1. Move the ISO/IEC 13818 section to immediately after the introductory section and merge it with the introduction paragraphs that discuss the parts of the standard. Also, there is now an 11th part to the MPEG-2 standard: IPMP (Intellectual Property Management and Protection).
  2. Expand the section on MPEG-2 audio compression to summarize how it works.
  3. Make the separate MPEG-2 Transport Stream article a section of the MPEG-2 article.

For what it's worth, I found copies of the various parts of MPEG-2 standard on the web. But I wonder about copyright issues. ISO will sell you copies of each part of the standard but they are pricey.

I did get my DTV recording program working by changing the name of a variable. The problem had nothing to do with MPEG-2.

Ivar Y 15:37, 26 November 2006 (UTC)

The entire video coding discussion should be moved to either Video coding or some other separate article. (hint: 99% of what's said about it in this article would also be true in MPEG-4 Part 2, MPEG-1, H.263...) I suggest you work on that instead. Then, the redundant section should be mostly removed from this article. Merging transport stream and audio is probably a bad idea. Snacky 20:14, 26 November 2006 (UTC)
I half agree with you. However, I think that when people come to the MPEG-2 article, they should be given information about MPEG-2. They should see more than a list of unfamiliar or vague technical terms configured as hyperlinks. If people are looking for a picture of George Washington, they want a complete picture in one location. They don't want to be told that they can find a pictures of ears in the article on ears, that a picture of eyes is available in the article on eyes, that noses are discussed at still another location, and so on.
On the other hand, I agree that it is undesirable to keep reinventing descriptions of common processes like video compression.
One solution, which in practice may be difficult to achieve, is to provide a summary description of important processes (e.g., video compression) in the immediate article (e.g., MPEG-2) and to link to the more specialized articles (e.g., about video compression) for a more detailed discussion.
Unfortunately, when I start looking in the wikipedia for articles relating to video compression, I find lots of them:
video compression
video coding
video codec
JPEG
quantization (image processing)
color quantization
multimedia compression
H.262
digital video
interlace
B pictures
Ivar Y 07:20, 27 November 2006 (UTC)

Aspect ratio[edit]

NTSC MPEG-2 also allows for a 640x480 resolution at 29.97 fps. El Mariachi94 06:30, 1 December 2006 (UTC)El Mariachi94

D-frame[edit]

The video compression article mentions "D-frame". What is a D-frame ?

When I click on "D-frame" to learn more, I am redirected here to MPEG-2. But this MPEG-2 article never mentions "D-frame". (Is there some other article that would be a more appropriate destination for that redirect?) --68.0.120.35 03:09, 8 February 2007 (UTC)

There is no "D-frame" in MPEG-2 video (see ISO/IEC 13818-2 Table 6-12), therefore this redirection sounds wrong. Motonari 16:57, 29 September 2007 (UTC)

There are D-Frames in MPEG-1. They are intra frames that have only DC component, so the image is made of very big (8x8 blocks) blocks. They have been created with intension for fast-play-forward (as they don't need use of full IDCT tranform). —Preceding unsigned comment added by 89.215.50.234 (talk) 22:13, 21 October 2007 (UTC)

Interlacing is not for reducing the amount of data[edit]

Interlacing was necessary to avoid flickering because the frequency had to be synchroneous to the power supply frequency; 50 Hz (Europe) or 60 Hz (USA) was not enough.

The amount of data is determined by the number of image per second, 25 i/s (Europe) or 30 i/s (USA).

Interlacing does not reduce the number of image per second, it just avoids flickering.

Of course, with higher frequencies like today, you could increase the image rate, but mind that 18 i/s is enough to have a good fluidity (cinema at the time of silent films). Cinema is at 24 i/s because of optic sound (increasing speed ⇒ increasing bandwidth) and TV is at 25 or 30 i/s to match the power supply frequency (pb of parasites, now solved).

cdang|write me 15:08, 22 March 2007 (UTC)

Yes, it is.
This is what Interlace article states: storing a full video frame and scanning it twice would require a frame buffer, a method that did not become feasible until the late 1980s. In addition, the limits of vacuum tube technology required that CRTs for TV be scanned at AC line frequency in order to prevent interference. (This was 60 Hz in the US, 50 Hz Europe.) In 1936 when the analog standards were being set in the UK, CRTs could only scan at around 200 lines in 1/50th of a second. By using interlace, a pair of 202.5-line fields could be superimposed to become a sharper 405 line frame. The vertical scan frequency remained 50 Hz, so flicker was not a problem, but visible detail was noticeably improved. After the Second World War, improvements in technology allowed the US and the rest of Europe to adopt systems using progressively more bandwidth to scan higher line counts, and achieve better pictures. However the fundamentals of interlaced scanning were at the heart of all of these systems.
If the speed of scan were better, than there would be no interlace - each frame would be scanned in progressive mode and projected twice, so the main reason was limited bandwidth.
Yes, interlace does not reduce number of images per second, but it lowers factual resolution of each image thereby reducing amount of data - 25p has twice as much data as 25i at the same resolution.
--Alexander Iwaschkin 15:53, 22 March 2007 (UTC)

MC is performed before DCT and Quantization[edit]

In Macroblocks, it reads:

 To correct for this, the encoder computes the strings of coefficient values as described above for both macroblocks and,
 then, subtracts one from the other.

Encoders first subtract a reconstructed block (= pixel value) from a predicted block, and then computes DCT coefficient on the difference. So, I'm afraid the current article has an error here. Motonari 17:35, 29 September 2007 (UTC)

422P@LL? 422P@H14?[edit]

In the latest published standard (ISO/IEC 13818-2 2000), there is no 422P@LL nor 422P@H14. As far as I know, there is no plan to add them. Could anyone provide a reference if there is good reason to say "Potential future"? If there is no such references, I suggest to remove them.

Additionally, 422P@HL is not "potential future" but they are well defined and actually used. I will remove "potential" of that. NTT VASA Series —Preceding unsigned comment added by Motonari (talkcontribs) 06:29, 30 September 2007 (UTC)

Do the MPEG-2 files keep history if any program changes them?[edit]

They say that files of MPEG-2 or latest type keep a record-history of changes being done to them by programs. Is this true? And is it also true that MPEG-1 does not do that? —Preceding unsigned comment added by 150.140.226.32 (talk) 23:18, 18 March 2008 (UTC)

In Mpeg-2 DVD, why 4:3 and 720x480?[edit]

This has never made sense to me: Why does the Mpeg-2 standard, in DVD format, allow 4:3, but no resolutions that calculate to 4:3? Have you ever noticed that the aspect ratios allowed can never be achieved using the allowed resolutions? Why is that? There must be a reason. —Preceding unsigned comment added by 71.169.156.93 (talk) 16:10, 6 September 2008 (UTC)

Because the pixels in the 720x480 4:3 format are not "square". Their height is 10% larger than their width (which makes a 704x480 area within the 720x480 exactly 4:3 and leaves the rest for "overscan"). The 720x480 sampling was designed (a long time ago) so that its sampling rate had a nice relationship with the existing analog signals. It didn't really matter (at that time) that the width and height of each sample on the screen are not the same, because television displays were not built based on that assumption. The newer 16:9 HDTV formats (1280x720 and 1920x1080) were designed differently — using the more digital-centric "square pixel" concept rather than building them for compatibility with old analog television signals. —Cat5nap (talk) 16:31, 6 September 2008 (UTC)

I just noticed a reference on the Cyberlink website to "MPEG-2 HD". It would be nice if someone could explain this particular iteration of the MPEG-2 format. Thanks.96.10.22.202 (talk) 17:02, 2 November 2008 (UTC)

Different extensions[edit]

Hi, It'd be nice to have the different filename extensions of MPEG-2, as there is on the article of MPEG-1. Does someone know them all ? —Preceding unsigned comment added by 86.199.63.221 (talkcontribs) 21:31, 6 December 2008

I want to second that! ! ! Someone asked me to try to recover MPEG-2 files which came from a camcorder, I searched the internet but I couldn't find out which extensions I should be looking for. —Preceding unsigned comment added by 78.149.158.52 (talkcontribs) 01:40, 15 February 2009
Filename extensions are usually .m2v .mpeg .mpg m2a and .vob; though when recovering data; I'd just look at any big file regardless of extensions; because people tend to use different (nonstandard) extensions all the time Nidomedia (talk) 14:42, 1 April 2009 (UTC)
Yes, but the big question is about MPEG-2 clips that contain both video and audio. -82.80.57.79 (talk) 06:55, 16 October 2009 (UTC)

HD camera size[edit]

How did the hd camera bitrate came to be? any calculation I do results in a different number. Nidomedia (talk) 14:42, 1 April 2009 (UTC)

Frame Rate[edit]

The frame rate discussion in the video coding section implies that the fields in interlaced video are obtained by taking alternate lines from a (progressive) frame. This is not the case - the fields represent different points in time, and it would be better to say that odd lines are taken from one frame of a 50 (or 59.94) fps video signal and even lines from the next. (A more complicated algorithm incorporating vertical low-pass filtering is actually used in modern video cameras). The only exception to this rule is if a low frame-rate progressive signal (eg 1080p25)is being conveyed using a technology designed for interlaced video at a higher field rate (eg HD-SDI at 1080i50) - a process known as "pre-segmented frame" representation. Elvum (talk) 09:57, 11 December 2008 (UTC)

DVB Picture Sizes[edit]

I just thought I'd throw it in that "standard definition" DVB-T in the UK (called Freeview[178], for which there are currently no high definition channels) is done in 1024x576 interlaced. This is a 16:9 ratio for 576i (PAL). I don't know whether it isn't listed because it's not listed in an MPEG spec somewhere but it's definitely used. 86.16.148.129 (talk) 13:54, 17 April 2009 (UTC)

Why did the 422P@Main Level entry go away?[edit]

Back in early 2008, someone deleted the 422P entry from the table of profiles. Why? 422P@main level is a perfectly valid MPEG-2 profile. Is there any good reason not to restore it in the table? 74.95.46.250 (talk) 18:02, 9 June 2009 (UTC)

I've done a bit of research and apparently the 422P profile was added in 1997, as an amendment to the 1995 first edition MPEG-2 Part 2 spec, and later (probably) included in the 2000 second edition. Unfortunately, the 2000 edition is not freely available, but the 1995 one is, so some editors might mistakenly believe 422P doesn't exist. I don't have access to the 2000 edition, so I can't make the necessary changes, hopefully someone else does. C xong (talk) 04:25, 4 August 2010 (UTC)
I've just gotten my hands on the 2000 edition and I've added two new profiles: 4:2:2 and multi-view. HTH C xong (talk) 01:37, 6 August 2010 (UTC)

60i not 30i[edit]

The article seems to use a convention different to virtually everywhere else I've seen, halving the number used for interlaced frames. Generally NTSC is considered "60i" (or 59.xxi), and PAL "50i", but for some reason this article uses 30i and 25i respectively.

Before changing it, I'd like to double check: is there some discussion somewhere where Wikipedia settled on this unusual convention? Otherwise I'll change it to the same convention I see in TV specification lists, MPEG encoder descriptions, etc... 66.149.58.8 (talk) 23:00, 21 June 2009 (UTC)

Subtitle Patent?[edit]

Does the subtitling technology over MPEG-2 count as an essential component? Maybe it should be added to the patent list. Its owned by Philips. See SUBTITLING TRANSMISSION SYSTEM. Patent numbers:

  • WO9619077
  • US6661467
  • PT745307
  • MX9603393
  • JP2008079325

Patent Information can be found here:

Abstract is Here:

A method of simultaneously transmitting a video signal and encoded data representing graphic images is disclosed. The invention is particularly applicable for transmitting multilingual subtitles with a video program. The graphic images are rectangular regions within the active video area. They are transmitted in the form of bitmaps. The invention not only allows any character font or size to be displayed, but also the definition of e.g. a program provider's logo. The encoded data includes a time stamp to specify the time at which a subtitle is to be displayed. Preferred embodiments of the invention include the transmission of colour-look-up-table (CLUT) data and a compatibility code indicating a required minimum number of entries of said colour-look-up-table. For receivers with a CLUT having more entries than necessary, a map table is transmitted for mapping the pixel data width to the input width of the relevant CLUT. The method is applicable to Direct Video Broadcast systems wherein the video signal is MPEG2 encoded and the graphic images are accommodated in a private data stream of an MPEG2 Transport Stream.

Speedplane (talk) 17:56, 14 July 2009 (UTC)

Impact of MPEG LA patent portfolio remains unclear in article[edit]

It seems that many/most digital still cameras and video camcorders (among them professional models selling for $8000) use only a license for "personal use and non-commercial" purposes (likely mobile phones with cameras as well).

According to [179] this is for instance problematic when showing a clip on a site together with advertisements (as on youtube, vimeo or on a private web site which also uses advertisements).--95.117.227.52 (talk) 14:23, 2 May 2010 (UTC)

Seems like a useful addition to the article. Go for it. Jrincayc (talk) 02:58, 3 May 2010 (UTC)
I'm not that much into the topic and there seems to be more than one position about this [180]. Not being familiar with the US legal system (or for that matter the legal system of the country I live in) and not being a native speaker I'm not going to add this to the article. Thanks for the encouragement though:) --95.117.202.214 (talk) 19:19, 5 May 2010 (UTC)

playing DVDs recorded in MPEG-2 on a PC[edit]

I have several pieces of software which normally play DVDs on my computer without problems. Recently I bought a DVD that does not play. Windows Media Player says that I have to purchase a plug-in to make the DVD play because it is MPEG-2. Does anyone have more information about this? —Preceding unsigned comment added by 72.89.74.153 (talk) 20:47, 8 September 2010 (UTC)

Not a word about Blu-Ray, nor HD-DVD ?[edit]

Interesting ;-P KSM-2501ZX, IP address:= 189.120.138.176 (talk) 19:26, 12 September 2010 (UTC)

Chronology[edit]

I was just reading here that "Silicon Philosophies - formerly Front Porch Video - engineered the world's first MPEG-2 encoder for Toshiba and Warner in 1996". I came to the article, not specifically to check on the accuracy of that, but to get a general idea of the development timeline. No joy. I note the section already has an expansion tag. Some fleshing out would be welcome. Wwwhatsup (talk) 11:57, 24 January 2013 (UTC)