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Revision as of 23:33, 7 December 2009

The Mobile High-definition Link (MHL) is a compact audio/video connector interface for transmitting uncompressed digital video and audio streams. It represents a digital alternative to consumer analog standards such as composite video and S-Video. MHL is compatible with DVI and HDMI, but uses many fewer pins and therefore can attach with smaller connectors and thinner cable. Smaller connectors are favored by makers of smaller and smaller portable devices.

MHL connects mobile digital audio/video sources such as cameras, portable media players, and camera phones to any HDMI device's input.

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

The content stream is compliant to the HDMI specification, through the use of a bridge chip in a smart cable or docking station. The mobile device plugs into the bridge, where it can be recharged while playing content up to 720p or 1080i to the display device.

MHL technology was invented by Silicon Image, one of the founders of the HDMI standard. The MHL technology link has been optimized for low power operation of the mobile device, and includes provision for charging the mobile device through the MHL cable.

MHL technology chips have been announced for the HDTV side of the interconnect.

A working group was announced in September 2009 to develop a specification based on MHL Technology. The group includes Nokia, Samsung, Silicon Image, Sony, and Toshiba.

References and notes

1. "New Dual-Mode HDMI/MHL Technology Solution Reduces BOM Cost, Extends battery life and prepares handsets for an HD connection to HDTVs". Silicon Image. July 14, 2008. Retrieved 2009-01-15.
2. "Mobile High-Definition Link Technology Gives Consumers the Ability to Link Mobile Devices to HDTVs with Support for Audio and Video". Silicon Image. January 15, 2009. Retrieved 2009-01-15.
3. "Silicon Image introduces First Products". Silicon Image. June 22, 2009. Retrieved 2009-06-24.
4. "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.

External links

• Silicon Image product overview

• Digital display connectors
• Television technology
• Film and video technology
• High-definition television