Jump to content

Mobile High-Definition Link

From Wikipedia, the free encyclopedia

This is an old revision of this page, as edited by Kristinmie (talk | contribs) at 18:45, 13 August 2013. The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

Mobile High-Definition Link
HeadquartersSunnyvale, California, United States
Area served
Worldwide
Key people
Judy Chen
(President)
ProductsAdapters, automotive accessories, AV receivers, Blu-ray players, cables, DTVs, monitors, projectors, smartphones, tablets, TV accessories

Mobile High-Definition Link (MHL) is an industry standard for a mobile audio/video interface that allows consumers to connect mobile phones, tablets and other portable consumer electronics (CE) devices to high-definition televisions (HDTVs) and audio receivers. The MHL standard supports up to 1080p/60 high-definition (HD) video and 7.1 surround sound audio while simultaneously charging the connected device. MHL-enabled products include adapters, automotive accessories, AV receivers, Blu-ray Disc players, cables, DTVs, monitors, projectors, smartphones, tablets, TV accessories and more.

MHL was being developed by the MHL Consortium, a Consortium made up of leading companies in the mobile and CE space that includes Nokia, Samsung, Silicon Image, Sony and Toshiba.

History

Silicon Image originally demonstrated a mobile interconnect, based on its transition-minimized differential signaling (TMDS) technology, at the January 2008 Consumer Electronics Show (CES).[1] This interface was termed "Mobile High Definition Link" at the time of the demonstration, and is a direct precursor of the implementation announced by the MHL Consortium. The company is quoted as saying it did not ship that original technology in any volume, but used it as a way to get the working group started.[2]

MHL, LLC is the agent for overseeing the licensing and promotion of the MHL specification. A Working Group was announced in September 2009,[3] the MHL Consortium was founded in April 2010 Nokia, Samsung, Silicon Image, Sony and Toshiba, the MHL specification version 1.0 was released in June 2010 and May 2011 marked the first retail availability of MHL-enabled products.

Introduction

An abridged version of the specification was made available for download on April 14, 2010 at http://www.mhltech.org. MHL specification version 1.0 was released in June 2010.[4] Details on the adopter agreement can also be found on the MHL Consortium's website.[5]

The Compliance Test Specification (CTS) was announced on December 21, 2010.[6]

Market traction

At the start of 2013, MHL announced that since the retail introduction of the first MHL-enabled devices two years prior, the MHL ecosystem is continuing to grow with an installed base of more than 220 million products and greater than 200 products in the marketplace today. The past year saw the release of the industry's first MHL-enabled AVRs, Blu-ray Disc players, laptop docks, PC monitors and projectors developed by the growing base of nearly 180 global adopters (licensees). One area that is beginning to embrace the technology is the automotive sector, with manufacturers such as Hyundai, JVC-Kenwood and Pioneer viewing MHL as a compelling solution to integrate the phone into the car infotainment experience.

Features

  • The TV provides power to the connected device (5 V DC/500 mA with MHL 1.0, 5 V DC/900 mA with MHL 2.0).
  • Uses a single, thin cable to connect the mobile device to the TV.
  • The TV remote will control the connected device with guaranteed mixed manufacturer interoperability (CEC).[7] (Also see Silicon Image's press release about MHL on December 14, 2010). Note: The built-in Remote Control Protocol(RCP) function allows you to use the remote control of the TV to operate the MHL mobile device through TV’s Consumer Electronics Control (CEC) function.
  • 1080p uncompressed HD video.
  • 8 channel uncompressed audio (e.g., 7.1 surround sound).
  • Supports High-bandwidth Digital Content Protection (HDCP).
  • MHL is connection agnostic (i.e., not tied to a specific type of hardware connector). The first implementations used the 5-pin MHL-USB connector described below. Other proprietary and custom connections are also allowed.

By transporting the digital content in digital form, the full impact of the picture (whether still images or video) can be seen on TVs.[8]

Connectors

Standard Micro-USB-to-HDMI adapter (five-pin)

The first implementations use the most popular mobile connection (micro USB) and the most popular TV connection (HDMI). Other than the physical connectors, USB and HDMI technology are not being used. It is exclusively MHL signaling through the connectors and over the cable.

Samsung Micro-USB-to-HDMI adapter (eleven-pin)

The Samsung Galaxy S III, and later Galaxy Note II and Galaxy S4, use an adapter and Micro-USB socket with six additional connector pins in order to achieve functional improvements over the 5-pin design:

  • It supports the use of USB and MHL simultaneously. (Note that the new Samsung 11-pin MHL-HDMI adapter also has a USB On-The-Go port).
  • Samsung’s Galaxy S III/ Note 2 can power the MHL-HDMI adapter (when used with a non-MHL-compatible-TV). Although this can theoretically also be done with the standard 5-pin micro-USB connector, the Galaxy S III's 11-pin connector is believed to be the first smartphone that supports this functionality.

The socket is incompatible with all current non-Samsung MHL adapters. [9][10]

MHL cable

Passive cables are also available at retail that allows consumers to connect an MHL-enabled device directly to an MHL TV.

Products announcements

  • Samsung 14 march 2013, Samsung release Galaxy S4 with MHL 2.0
  • HTC 19 February 2013, HTC release the New HTC ONE with MHL
  • MHL announced on January 7, 2013 that there was an installed base of more than 220 million products and greater than 200 products in the marketplace.
  • Hyundai announced on January 4, 2013 that it would be showing working versions of future vehicle infotainment systems, including MHL technology.
  • Silicon Image expanded its MHL product line with four new products that included the latest MHL 2.0 features on September 25, 2012. .[11]
  • Roku unveiled the 'Roku Streaming Stick' on January 4, 2012 in an official blog post entitled 'There’s a Better Way to Build a Smart TV'. The Streaming Stick is said to include everything comprised in a Roku player—built-in WiFi, processor, memory and software—and will deliver all the channels found on the Roku platform today.[12]
  • HTC announced at the 2011 CTIA that their 'EVO 3D' mobile device supports MHL output and in addition that the HTC 'Sensation' will also have this capability, as well as its successor, the 'Sensation XE'. The HTC Rezound, which is a sister device to the Sensation XE also has the MHL port.
  • Onkyo and Silicon Image announced the world's first A/V receivers featuring InstaPrevue and MHL technologies [17]

MHL-enabled devices

References and notes

  1. ^ "HDMI plugs into cameras, cellphones". EE Times. January 8, 2008. Retrieved 2010-04-14.
  2. ^ "Consortium backs mobile interface for high def video". EE Times. April 14, 2010. Retrieved 2010-04-14.
  3. ^ "Leading Companies Form Mobile High-Definition Interface Working Group to Drive Industry Standard for Mobile Wired Connectivity". Silicon Image. September 28, 2009. Retrieved 2009-09-30.
  4. ^ "MHL 1.0 SPECIFICATION AND ADOPTER AGREEMENT NOW AVAILABLE". MHL, LLC. June 30, 2010. Retrieved 2010-06-30.
  5. ^ "Adopter Information". MHL, LLC. June 30, 2010. Retrieved 2010-06-30.
  6. ^ "MHL CONSORTIUM RELEASES COMPLIANCE TEST SPECIFICATION TO GROWING ADOPTER BASE". MHL, LLC. December 21, 2010. Retrieved 2010-12-22.
  7. ^ a b "MHL High-definition Link". YouTube. February 15, 2011. Retrieved 2011-02-15.
  8. ^ "Play Mobile Games on Your Television with MHL". FlashMush Reviews. October 23, 2012.
  9. ^ MHL 2 was announced to be compatibile with MHL 1. Using MHL name for new connector confused many users.
  10. ^ "Standards be damned: Samsung Galaxy S III requires special MHL adapter". 2012-06-08. Retrieved 2012-07-02.
  11. ^ "Silicon Image Unveils First MHL Products". Silicon Image. October 4, 2010. Retrieved 2011-02-15.
  12. ^ "There's a Better Way to Build a Smart TV". Roku Official Blog. January 4, 2012. Retrieved 2012-01-04.
  13. ^ "LG Nitro HD Delivers First True High-Definition Experience for AT&T Customers" (Press release). AT&T Wireless. November 28, 2011. Retrieved 2011-11-28.
  14. ^ "WORLD'S FIRST HD LTE SMARTPHONE ANNOUNCED IN CANADA" (Press release). LG Electronics. November 8, 2011. Retrieved 2011-11-08.
  15. ^ "LG LAUNCHES OPTIMUS LTE, FIRST 4G HD SMARTPHONE IN KOREAN MARKET" (Press release). LG Electronics. October 4, 2011. Retrieved 2011-10-04.
  16. ^ "The Samsung Galaxy S2 is Announced". MobileReview. February 15, 2011. Retrieved 2011-02-15.
  17. ^ "Onkyo and Silicon Image Announce the World's First A/V Receivers Featuring InstaPrevue and MHL Technologies" (Press release). Onkyo US. December 21, 2011. Retrieved 2012-06-06.

See also

Retrieved from "https://en.wikipedia.org/w/index.php?title=Mobile_High-Definition_Link&oldid=568394795"