Jump to content

DisplayPort: Difference between revisions

From Wikipedia, the free encyclopedia
Browse history interactively
← Previous editNext edit →
Content deleted Content added
VisualWikitext
→‎Compatibility with HDMI/DVI: cleanup, reduced redundancy of statements covered in the "Overview" section
Undid revision 472494348 by GoneIn60 (talk)
Line 184: Line 184:
|}
|}


DisplayPort is capable of directly emitting single-link [[HDMI]] and [[Digital Visual Interface|DVI]] signals using the ''dual-mode'' DisplayPort feature. VESA issued interoperability guidelines for supporting single-link DVI and HDMI through the use of a relatively simple passive adapter that adjusts for the lower voltages required by the DisplayPort interface.<ref name="dpfaq">{{Cite news|title=DisplayPort FAQ |publisher=DisplayPort website |url=http://www.displayport.org/consumer/?q=content/faq |accessdate=2008-06-19}}</ref><ref name=DP_Interop>{{Cite news|title=DisplayPort Interoperability Guideline Version 1.1a|publisher=VESA.org |url=http://www.displayport.org |date=2009-02-05 |accessdate=2010-07-02}}</ref> A dual-mode DisplayPort detects the passive adapter and switches to the desired clock signal and [[Display Data Channel]], or DDC. Dual-mode ports (also referred to as multimode or multi-mode) are marked with the DP++ logo. Most graphics card and monitor models with DisplayPorts released since 2010 support this mode.<ref name=CEA2010/> VESA foresees that all DVI and HDMI conversion will eventually be handled by DisplayPort Sink devices, which support both active and passive conversion and allow for easier updates to the DisplayPort interface spec.<ref name=CEA2010/>
DisplayPort is capable of directly emitting single-link [[HDMI]] and [[Digital Visual Interface|DVI]] signals using ''Dual-mode DisplayPort''. VESA has issued interoperability guidelines for supporting single-link DVI and HDMI through a DisplayPort connection using a relatively simple passive adapter that adjusts for the lower voltages required by DisplayPort.<ref name="dpfaq">{{Cite news|title=DisplayPort FAQ |publisher=DisplayPort website |url=http://www.displayport.org/consumer/?q=content/faq |accessdate=2008-06-19}}</ref><ref name=DP_Interop>{{Cite news|title=DisplayPort Interoperability Guideline Version 1.1a|publisher=VESA.org |url=http://www.displayport.org |date=2009-02-05 |accessdate=2010-07-02}}</ref> Dual-mode DisplayPort chipset detects the DVI or HDMI passive adapter and switches to DVI/HDMI mode which uses the 4-lane main DisplayPort link and AUX channel link to transmit 3 TMDS signals plus a Clock signal and [[Display Data Channel]] data/clock from the chipset. Dual-mode compatible ports are marked with the DP++ logo; most current DisplayPort graphics cards and monitors support this mode.<ref name=CEA2010/>

A notable limitation is that dual-mode can only transmit single-link DVI/HDMI, as the number of pins in the DisplayPort connector is insufficient for dual-link connections and an active converter is needed for Dual-Link DVI (and analog [[component video]] such as [[VGA]]); however, VESA foresees that all HDMI conversion will eventually be handled by active adapters which act as DisplayPort Sink devices, in order to facilitate easier updates to latest HDMI specs and support multiple streams, dual-link HDMI,<ref name=CEA2010/> or DisplayPort connection with fewer than 4 lanes, as in [[PDMI]]. DVI 1.0 spec was finalized in 1999 and the DVI industry consortium has since disbanded, which means future updates to DVI specification are unlikely; also, although dual-link HDMI ''Type B'' is defined in the HDMI specification, it has not seen any practical use so far.


===Relationship with HDMI===
===Relationship with HDMI===

Revision as of 21:09, 21 January 2012

DisplayPort
DisplayPort connector
Type Digital audio/video connector
Production history
Designer VESA
Designed May 2006
Produced 2008–present
General specifications
Hot pluggable Yes
External Yes
Audio signal Optional; 1–8 channels, 16 or 24-bit linear PCM; 32 to 192 kHz sampling rate; maximum bitrate 49,152 kbit/s (6MB/s)
Video signal Optional, maximum resolution limited by available bandwidth
Cable 3 meters for full bandwidth transmission over passive cable.
33 meters over active cable.[1]
Pins 20 pins for external connectors on desktops, notebooks, graphics cards, monitors, etc. and 30/20 pins for internal connections between graphics engines and built-in flat panels.
Electrical
Signal +3.3 V
Max. voltage 16.0 V
Max. current 500  mA
Data
Data signal Yes
Bitrate 1.62, 2.7, or 5.4 Gbit/s data rate per lane; 1, 2, or 4 lanes; (effective total 5.184, 8.64, or 17.28 Gbit/s for 4-lane link); 1 Mbit/s or 720 Mbit/s for the auxiliary channel.
Protocol Mini-packet
Pinout
External connector (source-side) on PCB
Pin 1 ML_Lane 0 (p) Lane 0 (positive)
Pin 2 GND Ground
Pin 3 ML_Lane 0 (n) Lane 0 (negative)
Pin 4 ML_Lane 1 (p) Lane 1 (positive)
Pin 5 GND Ground
Pin 6 ML_Lane 1 (n) Lane 1 (negative)
Pin 7 ML_Lane 2 (p) Lane 2 (positive)
Pin 8 GND Ground
Pin 9 ML_Lane 2 (n) Lane 2 (negative)
Pin 10 ML_Lane 3 (p) Lane 3 (positive)
Pin 11 GND Ground
Pin 12 ML_Lane 3 (n) Lane 3 (negative)
Pin 13 CONFIG1 connected to Ground1)
Pin 14 CONFIG2 connected to Ground1)
Pin 15 AUX CH (p) Auxiliary Channel (positive)
Pin 16 GND Ground
Pin 17 AUX CH (n) Auxiliary Channel (negative)
Pin 18 Hot Plug Hot Plug Detect
Pin 19 Return Return for Power
Pin 20 DP_PWR Power for connector (3.3 V 500 mA)
  1. Pins 13 and 14 may either be directly connected to ground or connected to ground through a pulldown device.
  2. This is the pinout for source-side connector, the sink-side connector pinout will have lanes 0–3 reversed in order; i.e., lane 3 will be on pin 1(n) and 3(p) while lane 0 will be on pin 10(n) and 12(p).

DisplayPort is a digital display interface standard produced by the Video Electronics Standards Association (VESA). The specification defines a royalty-free digital interconnect for audio and video. The interface is primarily used to connect a video source to a display device such as a computer monitor or television set.

The first version 1.0 was approved by VESA on May 3, 2006.[2] Two updated revisions have since been approved starting with 1.1a on April 2, 2007[3] followed by the current standard 1.2 on December 22, 2009.[4]

DisplayPort is designed to replace Digital Visual Interface (DVI) and Video Graphics Array (VGA), as well as replace internal digital LVDS links in computer monitor panels and TV panels. DisplayPort can also provide the same functionality as HDMI but is not expected to displace HDMI in high-definition consumer electronics devices.[5]

Overview

DisplayPort is the first display interface to rely on packetized data transmission similar to other data communication protocols such as Ethernet, USB, and PCI Express. It supports both external (box-to-box) and internal (laptop LCD panel) display connections, and unlike DVI/HDMI and LVDS standards where differential pairs are fixed to transmitting RGB pixels and a clock signal, the DisplayPort protocol is based on small data packets with clock embedded. The use of data packets also allows for DisplayPort to be extensible, meaning additional features can be added over time without significant changes to the interface itself.[6]

The DisplayPort connector supports 1, 2, or 4 differential data pairs (lanes) in a Main Link, each with a raw bit rate of 1.62, 2.7, or 5.4 Gbit/s per lane with self-clock running at 162, 270, or 540 MHz. Data is 8b/10b encoded where each 8 bits of information are encoded with a 10 bit symbol. So the effective data rates after decoding are 1.296, 2.16, and 4.32 Gbit/s per lane (or 80% of the total).

Both video and audio signals are optional; a Displayport signal can be used to transport audio-only content, video-only content, or both audio and video simultaneously. The video signal path supports 6 to 16 bits per color channel, and the audio path supports up to 8 channels of 24 bit 192 kHz uncompressed PCM audio which can encapsulate compressed audio formats in the audio stream.[7] A bi-directional, half-duplex auxiliary channel carries device management and device control data for the Main Link, such as VESA EDID, MCCS, and DPMS standards. In addition, the interface is capable of carrying bi-directional USB signals.[8]

The DisplayPort interface does not directly support DVI, HDMI, or VGA. However, the conversion to legacy formats can be achieved through the use of external adapters as long as the DisplayPort is marked with a DP++ logo (see Compatibility with HDMI/DVI below).[9] There are two main types of external adapters: passive and active. Passive external adapters use the Hot Plug Detect feature to direct the Displayport interface to output the desired display signal. No conversion is taking place. They can be used to support both HDMI and single-link DVI with resolutions up to 1920x1200. Other legacy formats, such as VGA and dual-link DVI, do require active translation of the display signal which in turn requires the use of an active external adapter. This conversion process relies on the low-voltage power signal that the Displayport interface provides. For VGA, the active adapter uses a digital-to-analog converter (DAC) to output an analog signal. For dual-link DVI, the conversion requires more power than the DisplayPort interface is able to provide, and therefore the adapter also includes an additional cable that plugs into an available USB port.[7][10]

Versions

1.0 to 1.1

DisplayPort 1.0 supports a maximum of 8.64 Gbit/s data rate over a 2 meter cable.[11] DisplayPort 1.1 also supports devices which implement alternative link layers such as fiber optic, allowing a much longer reach between source and display without signal degradation,[12] although alternative implementations are not standardized. It also supports HDCP in addition to DisplayPort Content Protection (DPCP).

1.2

DisplayPort version 1.2 was approved on December 22, 2009. The most significant improvement of the new version is the doubling of the effective bandwidth to 17.28 Gbit/s, which allows increased resolutions, higher refresh rates, and greater color depth. Other improvements include multiple independent video streams (daisy-chain connection with multiple monitors), support for stereoscopic 3D, increased AUX channel bandwidth (from 1 Mbit/s to 720 Mbit/s), support for more color spaces including xvYCC, scRGB and Adobe RGB 1998, and Global Time Code (GTC) for sub 1 µs audio/video synchronisation. Also Apple Inc.'s Mini DisplayPort connector, which is much smaller and more appropriate for laptop computers and other small devices, is compatible with the new standard.[13][14][15][7][16]

Companion standards

Mini DisplayPort (mDP) is a standard announced by Apple in the fourth quarter of 2008. Shortly after announcing the Mini DisplayPort, Apple announced that it would license the connector technology with no fee. The following year, in early 2009, VESA announced that Mini DisplayPort would be included in the upcoming DisplayPort 1.2 specification.

Embedded DisplayPort (eDP) 1.0 standard was adopted in December 2008. It aims to define a standardized display panel interface for internal connections; e.g., graphics cards to notebook display panels.[17] It supports advanced power-saving features including seamless refresh rate switching. Version 1.1 was approved in October 2009 followed by version 1.1a in November 2009. Version 1.2 was approved in May 2010 and supports DisplayPort 1.2 data rates, 120 Hz sequential color monitors, and a new display panel control protocol that works through the AUX channel.[16] Version 1.3 was published in February 2011; it includes a new Panel Self-Refresh (PSR) feature developed to save system power and further extend battery life in portable PC systems.[18] PSR mode allows GPU to enter power saving state in between frame updates by including framebuffer memory in the display panel controller.[16]

Direct Drive Monitor 1.0 standard was approved in December 2008. It allows for controller-less monitors where the display panel is directly driven by the DisplayPort signal, although the supported resolutions and color depth are limited to 2-lane operation.

Internal DisplayPort (iDP) 1.0 was approved in April 2010. The iDP standard defines an internal link between a digital TV system on a chip controller and the display panel's timing controller. It aims to replace currently used internal LVDS lanes with DisplayPort connection.[19] iDP features unique physical interface and protocols, which are not directly compatible with DisplayPort and are not applicable to external connection, however they enable very high resolution and refresh rates while providing simplicity and extensibility.[16] iDP features non-variable 2.7 GHz clock and is nominally rated at 3.24 Gbit/s data rate per lane, with up to 16 lanes in a bank, resulting in 6-fold decrease in wiring requirements over LVDS for a 1080p24 signal;[7] other data rates are also possible. iDP was built with simplicity in mind and it doesn't support AUX channel, content protection, or multiple streams; however it does support frame sequential and line interleaved stereo 3D.[16]

Portable Digital Media Interface (PDMI) is an interconnection between docking stations/display devices and portable media players, which includes 2-lane DisplayPort v1.1a connection.[7] It has been ratified in February 2010 as ANSI/CEA-2017-A.

Wireless DisplayPort is a standard which will enable DisplayPort 1.2 bandwidth and feature set for cable-free applications operating in 60 GHz radio band; this was announced on November 2010 by WiGig Alliance and VESA as a cooperative effort.[20]

Specifications

DRM

DisplayPort 1.0 includes optional DPCP (DisplayPort Content Protection) from Philips, which uses 128-bit AES encryption. It also features full authentication and session key establishment (each encryption session is independent). There is an independent revocation system. This portion of the standard is licensed separately. It also adds support for verifying the proximity of the receiver and transmitter, a technique intended to ensure users are not bypassing the content protection system to send data out to distant, unauthorized users.

DisplayPort 1.1 added support for industry-standard 56-bit HDCP (High-bandwidth Digital Content Protection) revision 1.3, which has been compromised in September 2010 with the release of HDCP master key.

Technical specifications

  • Forward link channel with 1 to 4 lanes; effective data rate 1.296, 2.16, or 4.32 Gbit/s per lane (total 5.184, 8.64, or 17.28 Gbit/s for a 4-lane link)†.
  • 8b/10b encoding provides DC-balancing and Embedded Clock within serial channel (10 bit symbols, 20% coding overhead)
  • Supports RGB (unspecified) and YCbCr (ITU-R BT.601-5 and BT.709-4) color spaces, 4:4:4 and 4:2:2 chroma subsampling
    • sRGB, Adobe RGB 1998, DCI-P3, RGB XR, scRGB, xvYCC, Y-only, Simple Color Profile (version 1.2) [16]
  • Supports color depth of 6, 8, 10, 12 and 16 bits per color component
  • Optional 8-channel audio with sampling rates up to 24 bit 192 kHz, supports encapsulation of audio compression formats
  • Bidirectional half-duplex AUX channel, 1 Mbit/s (v1.0) or optional 720 Mbit/s (v1.2)
  • Supports stereoscopic 3D formats: frame sequential (v1.1a), field sequential, side-by-side, top-bottom, line interleaved, pixel interleaved and dual interface (v1.2) [16]
  • Optional dual-mode support generates TMDS and clock for single-link DVI/HDMI signaling with a simple line-level conversion dongle.[7]
  • Supports up to 63 video and audio streams with time-division transport multiplexing and hot-plug bandwidth allocation (from version 1.2)
  • 128-bit AES DisplayPort Content Protection (DPCP) support, and support for 40-bit High-bandwidth Digital Content Protection (HDCP) from version 1.1 onwards.
  • Supports internal and external connections so that one standard can be used by computer makers reducing costs.[21]
†Sample data rates required by various display resolutions using common vertical blanking methods, Gbit/s
Resolution × color depth @ frame rate CVT CVT-R CEA-861-E
1280 × 720 × 24 bpp @ 60 Hz 1.79 1.54 1.78
1920 × 1080 × 24 bpp @ 60 Hz 4.15 3.33 3.56
1920 × 1200 × 30 bpp @ 60 Hz 5.81 4.62 -
2560 × 1600 × 30 bpp @ 60 Hz 10.46 8.06 -
3840 × 2160 × 30 bpp @ 60 Hz 21.39 16.00 -
For RGB and YCbCr 4:4:4 encodings, bpp = 3 × bpc (bits per channel); for YCbCr 4:2:2 subsampling, bpp = 2 × bpc.

Comparisons

Compatibility with HDMI/DVI

Dual-mode DisplayPort
Dual-mode pin mapping
DisplayPort pins DVI 1.0/HDMI mode
Main Link Lane 0 TMDS Channel 2
Main Link Lane 1 TMDS Channel 1
Main Link Lane 2 TMDS Channel 0
Main Link Lane 3 TMDS Clock
AUX CH+ DDC Clock
AUX CH- DDC Data
DP_PWR DP_PWR
Hot Plug Detect Hot Plug Detect
Config 1 Cable Adaptor Detect
Config 2 CEC (HDMI only)

DisplayPort is capable of directly emitting single-link HDMI and DVI signals using Dual-mode DisplayPort. VESA has issued interoperability guidelines for supporting single-link DVI and HDMI through a DisplayPort connection using a relatively simple passive adapter that adjusts for the lower voltages required by DisplayPort.[22][23] Dual-mode DisplayPort chipset detects the DVI or HDMI passive adapter and switches to DVI/HDMI mode which uses the 4-lane main DisplayPort link and AUX channel link to transmit 3 TMDS signals plus a Clock signal and Display Data Channel data/clock from the chipset. Dual-mode compatible ports are marked with the DP++ logo; most current DisplayPort graphics cards and monitors support this mode.[7]

A notable limitation is that dual-mode can only transmit single-link DVI/HDMI, as the number of pins in the DisplayPort connector is insufficient for dual-link connections and an active converter is needed for Dual-Link DVI (and analog component video such as VGA); however, VESA foresees that all HDMI conversion will eventually be handled by active adapters which act as DisplayPort Sink devices, in order to facilitate easier updates to latest HDMI specs and support multiple streams, dual-link HDMI,[7] or DisplayPort connection with fewer than 4 lanes, as in PDMI. DVI 1.0 spec was finalized in 1999 and the DVI industry consortium has since disbanded, which means future updates to DVI specification are unlikely; also, although dual-link HDMI Type B is defined in the HDMI specification, it has not seen any practical use so far.

Relationship with HDMI

Most of the DisplayPort supporters are computer companies including Apple, Dell, HP, Lenovo, Fujitsu, Toshiba and Acer, some of which have released several computer monitors that support DisplayPort and some also with HDMI.[24][25]

The DisplayPort website states that DisplayPort is expected to complement HDMI.[22] DisplayPort can emit HDMI video and audio using passive adapters connected to Dual-mode ports, and supports HDCP content protection used in the HDMI standard.

DisplayPort lacked native support for the xvYCC color space, but that has been added in DisplayPort version 1.2. HDMI supports Consumer Electronics Control (CEC) signals, and these are lacking from DisplayPort.[26][27] However, VESA asserts that CEC can be transmitted over the AUX channel if needed;[7] additional color spaces defined in Vendor Specific Block could also be defined using CEA EDID extensions, which were designed for DVI-mode connections which lack VSB communications.

DisplayPort is currently royalty free, while the HDMI royalty is 4 cents per device and has an annual fee of $10,000 for high volume manufacturers.[28] HDMI Licensing LLC claims that, like HDMI, the DisplayPort specification allows for compensation from implementers to unspecified rights holders.[29]

Advantages over legacy standards

In December 2010 it was announced that several computer vendors and display makers including Intel, AMD, Dell, Lenovo, Samsung and LG would begin phasing out support for LVDS, VGA and DVI-I over the next few years moving forward with developing technologies DisplayPort and HDMI as their replacements.[30][31]. One notable exception to the list of manufacturers is Nvidia, who has yet to announce any plans regarding future support of legacy interfaces.

Legacy interfaces such as VGA, DVI and LVDS have not kept pace, and newer standards such as DisplayPort and HDMI clearly provide the best connectivity options moving forward. In our opinion, DisplayPort 1.2 is the future interface for PC monitors, along with HDMI 1.4a for TV connectivity.

AMD, Dell, Intel Corporation, Lenovo, Samsung Electronics and LG. Dec 8, 2010.[32]

DisplayPort has several advantages over VGA, DVI and LVDS.

  • Open[citation needed] (except HDCP), royalty-free and extensible standard to help broad adoption
  • Fewer lanes with embedded self-clock, reduced EMI with data scrambling and spread spectrum mode
  • Based on a micro-packet protocol
    • Allows easy expansion of the standard with multiple data types
    • Flexible allocation of available bandwidth between audio and video
    • Multiple video streams over single physical connection (version 1.2)
    • Long-distance transmission over alternative physical media such as optical fiber (version 1.1a)
  • Supports high resolution displays and multiple displays with a single cable
    • 17.28 Gbit/s of effective video bandwidth, enough for supporting 4 simultaneous 1080p60 displays (CEA-861 timings) or 2,560 × 1,600 × 30 bit @120 Hz (CVT-R timings)[note 1]
  • Designed to support internal chip-to-chip communication
    • Aimed at replacing internal LVDS links to display panels with a unified link interface
    • Compatible with low-voltage signaling used with sub-nanometer CMOS fabrication
    • Can drive display panels directly, eliminating scaling and control circuits and allowing for cheaper and slimmer displays
  • Link training with adjustable amplitude and preemphasis adapts to differing cable lengths and signal quality
    • Reduced bandwidth transmission for 15 meter cable (at least 1920x1080p60, 24 bpp)
    • Full bandwidth transmission for 2 meter cable
  • High-speed auxiliary channel for DDC, EDID, MCCS, DPMS, HDCP, adapter identification etc. traffic
    • Can be used for transmitting bi-directional USB, touch-panel data, CEC, etc.
  • Self-latching connector

Products

Left-hand side connectors on a Lenovo X220 laptop. From left to right, top to bottom: USB 3.0 host, VGA connector, Multi-mode DisplayPort connector, ExpressCard slot, USB 2.0 host

Since its introduction in 2006, DisplayPort has slowly gained popularity within the computer industry, and as of 2010, DisplayPort connectors are featured on many graphic cards, displays, and notebook computers.

ATI/AMD

AMD Graphics Product Group (former ATI Technologies) was the first company to release consumer products with an external DisplayPort transmitter with their 790G chipset and Radeon HD 2000 series graphics cards, which were unveiled at AMD's Technology Analyst Day on July 25, 2007. They later implemented the DisplayPort transmitter on the GPU chip in Radeon HD 3600 and HD 3400 graphics products, unveiled at AMD Financial Analyst Day on 13 December 2007. These products received DisplayPort certification from VESA in March 2008.[33]

In 2008, DisplayPort connectors were featured on many graphics cards based on the ATI/AMD HD 4000 series. In 2009, the HD 5000 series graphics cards incorporated a DisplayPort connector as standard, along with two Dual-link DVI connectors and a HDMI connector; the Eyefinity versions can carry up to six Mini DisplayPort connectors.[34] Support for DisplayPort audio was introduced by AMD in the Catalyst 9.12 hotfix.[35]

As of February 2011, the latest HD 6000 series graphics cards feature support for DisplayPort 1.2, allowing daisy-chaining multiple monitors from the same connector; a DisplayPort hub containing three Dual-link DVI connectors is also available.

Apple

On 14 October 2008, Apple introduced several products featuring a Mini DisplayPort[36] as the sole video connector. This connector was proprietary at that time. Later, with versions 1.1a and 1.2 of the specification, it became part of the standard. Between October 2009 and February 2011, all Mac models feature Mini DisplayPort connector; during that time iMac, MacBook, MacBook Air, MacBook Pro, and Xserve models used Mini DisplayPort as their sole video output while the Mac Mini and Mac Pro models had both a Mini DisplayPort and either a DVI port (Mac Pro) or an HDMI port (Mac Mini). On February 24, 2011 MacBook Pros began shipping with Thunderbolt (known previously by Intel codename Light Peak) which provides both DisplayPort and PCI Express functionality in a single port. On May 3, 2011 Apple introduced their first iMac lineup with Thunderbolt built in. The iMac 21 in (53 cm) received one and the iMac 27 in (69 cm) received two Thunderbolt ports.

Apple's 24 in (61 cm) and 27 in (69 cm) LED Cinema Displays feature Mini DisplayPort connector. The 27-inch iMac introduced in 2009 allowed the Mini DisplayPort to act as an input, turning the iMac into a standalone display.[37] 2011 iMacs support this 'Target Display Mode' via the Thunderbolt port, but only when the source is also equipped with Thunderbolt.[38]

Dell

A concept monitor by Dell implementing DisplayPort was demonstrated in early May 2007.[39]

The Dell 3008WFP 30-inch (76 cm), released in January 2008 was the first monitor to support DisplayPort.[40][41] The Dell 2408WFP 24-inch (61 cm) followed in April 2008.[42] Many other Dell monitors also offer the DisplayPort interface, including four of their 'Professional' series and five of their 'UltraSharp' series monitors.[43]

Hewlett Packard

The HP Elite L2201 21.5-inch (55 cm) released in June 2011 is the first monitor from Hewlett Packard to ship with a DisplayPort as the primary (and only) means of connectivity.[44] HP EliteBook laptops provide both a VGA and a DisplayPort connector.

Lenovo

Lenovo offers DisplayPort connectors on some models.

Adopters and supporters

The following companies have participated in preparing the drafts of DisplayPort, eDP, iDP, or DDM standards:

The following companies have additionally announced their intention to implement or support DisplayPort, eDP or iDP:

Market share

Figures from IDC show that DisplayPort was on 5.1 percent of commercial desktops and 2.1 percent on commercial notebooks in 2009. However, they predict that the figure for commercial desktops will grow to 89.5 percent, and for commercial notebooks to 95 percent by 2014.[30] The main factor behind this is the phase out of VGA, and that both Intel and AMD will also stop supporting low-voltage differential signaling (LVDS), by 2013.

See also

Notes

  1. ^ Dual-link DVI is limited in resolution and speed by the quality and therefore the bandwidth of the DVI cable, the quality of the transmitter, and the quality of the receiver; can only drive one monitor at a time; and cannot send audio data. HDMI 1.3 and 1.4 are limited by the standard to effectively 8.16 Gbit/s or 340 MHz, and can only drive one monitor at a time. VGA connectors have no defined maximum resolution or speed, but their analog nature limits their bandwidth.

References

  1. ^ O'Brian, Terrence (22 June 2011). "DisplayPort 1.2 adds active cable support: brings longer cords, more logos". Engadget. Retrieved 10 July 2011.
  2. ^ "New DisplayPort(TM) Interface Standard for PCs, Monitors, TV Displays and Projectors Released by the Video Electronics Standards Association". vesa.org. 3 May 2006. {{cite web}}: |access-date= requires |url= (help); |archive-url= requires |url= (help); Missing or empty |url= (help)
  3. ^ Hodgin, Rick (30 July 2007). "DisplayPort: The new video interconnect standard". geek.com. Retrieved 21 July 2011.
  4. ^ Zibreg, Christian (18 January 2010). "DisplayPort 1.2 enables full 4K x 2K resolution, 3D stereo beyond full HD, and more". Geek.com. Retrieved 21 July 2011.
  5. ^ Direct2Dell Blog: The Truth About DisplayPort vs. HDMI
  6. ^ "An Inside Look at DisplayPort v1.2". ExtremeTech. 4 February 2011. Retrieved 28 July 2011.
  7. ^ a b c d e f g h i "DisplayPort Technical Overview, May 2010" (PDF). VESA. 2010-05-23.
  8. ^ "The Case For DisplayPort, Continued, And Bezels". Tom's Hardware. 15 April 2010. Retrieved 28 July 2011.
  9. ^ "DisplayPort FAQ". DisplayPort.org. Retrieved 20 January 2012.
  10. ^ Thomas Ricker (2007-01-03). "DisplayPort to support HDCP, too". Engadget. Retrieved 2007-12-22.
  11. ^ "Video Electronics Standards Association (VESA) Endorses Alternative to Copper Cables". Luxtera Inc. 2007-04-17. Retrieved 2010-01-19.
  12. ^ Tony Smith, "DisplayPort revision to get mini connector, stereo 3D", The Register, 13 January 2009
  13. ^ "WinHEC 2008 GRA-583: Display Technologies". Microsoft. 2008-11-06.
  14. ^ "CES 2009 Press Event" (PDF). VESA. 2009-01-11.[dead link]
  15. ^ a b c d e f g DisplayPort® Developer Conference Presentations Posted | vesa
  16. ^ "Embedded DisplayPort Standard Ready from VESA" (PDF). VESA. 2009-02-23.[dead link]
  17. ^ VESA ® Issues Updated Embedded DisplayPort® Standard | Business Wire
  18. ^ "VESA Issues Internal DisplayPort Standard for Flat Panel TVs" (PDF). VESA. 2010-05-10.
  19. ^ Wireless Gigabit Alliance » » WiGig™ Alliance and VESA® to Collaborate on Next Generation Wireless DisplayPort
  20. ^ DisplayPort/DVI/HDMI Comparison table, VESA DisplayPort Standard v1.0—Audioholics Home Theater Reviews and News.
  21. ^ a b "DisplayPort FAQ". DisplayPort website. Retrieved 2008-06-19.
  22. ^ "DisplayPort Interoperability Guideline Version 1.1a". VESA.org. 2009-02-05. Retrieved 2010-07-02.
  23. ^ Paul Miller (2007-12-18). "Dell's 3008WFP 30-inch (760 mm)-inch LCD with DisplayPort sneaks available -- in US too". engadget. Retrieved 2008-06-18.
  24. ^ Thomas Ricker (2008-01-17). "Dell's 24-inch (610 mm)-inch 2408WFP monitor with DisplayPort (and everything else) now available". engadget. Retrieved 2008-06-18.
  25. ^ "HDMI Specification 1.3a". HDMI Licensing, LLC. 2006-11-10. Retrieved 2008-06-21.
  26. ^ "DisplayPort 1.1a Standard". VESA.org. 2008-01-11. Retrieved 2008-06-23.
  27. ^ "HDMI Adopter Terms". HDMI.org. Retrieved 2008-06-23.
  28. ^ "Interview with Steve Venuti from HDMI Licensing" (PDF). HDMI Licensing LLC.
  29. ^ a b technewsworld.com - VGA Given 5 Years to Live (9. December 2010)
  30. ^ Top PC, Chip, Display Makers to Ditch VGA, DVI | News & Opinion | PCMag.com
  31. ^ [1]
  32. ^ AMD Press Release: AMD Receives First Ever DisplayPort Certification for PC Graphics. Retrieved 2008-03-20.
  33. ^ "ATI Radeon HD 5870 1GB Graphics Card and AMD Eyefinity Review". PC Perspective. 2009-09-23. Retrieved 2009-09-23.
  34. ^ . AMD http://support.amd.com/us/kbarticles/Pages/ATICatalyst912Hotfix.aspx. Retrieved 2009-12-18. {{cite news}}: Missing or empty |title= (help)
  35. ^ "Software Licensing and Trademark Agreement: Mini DisplayPort".
  36. ^ Arya, Aayush (25 November 2009). "Apple posts guidelines on 27-inch iMac's Target Display mode". Macworld.com. Retrieved 3 December 2011.
  37. ^ "iMac Target Display Mode does not work with Mini DisplayPort cable". Apple. Retrieved 3 December 2011.
  38. ^ "Dell Shows Off Super-Slim Display Port LCD Monitor". Gearlog.com. 2007-05-17. Retrieved 2007-07-16.
  39. ^ Dell 3008WFP specifications[dead link]. Retrieved 2008-01-30. Template:Wayback[dead link]
  40. ^ "Dell UltraSharp 3008WFP 30-Inch LCD Monitor". The Washington Post. Retrieved 2008-06-25.
  41. ^ "Dell UltraSharp 2408WFP". The New York Times. Retrieved 2008-06-25.
  42. ^ "List of Devices from the DisplayPort Website". DisplayPort Official Website.
  43. ^ [2]
  44. ^ Analogix announces DisplayPort transmitter[dead link], published 2006-08-26, seen 2009-08-10
  45. ^ http://www.chrontel.com
  46. ^ "Genesis Microchip (GNSS) Q4 2006 Earnings Conference Call". Seeking Alpha. 2006-05-02. Retrieved 2007-07-16.
  47. ^ "Samsung touts development of first DisplayPort desktop LCD". TG Daily. 2006-07-25. Retrieved 2007-07-25.
  48. ^ ASRock announces motherboard with embedded DisplayPort[dead link], published 2008-03-25, seen 2009-08-10
  49. ^ MSI announces video adaptor with DisplayPort[dead link], published 2008-01-17, seen 2009-08-10
Retrieved from "https://en.wikipedia.org/w/index.php?title=DisplayPort&oldid=472497318"