Wednesday, January 04, 2012

Mobile high-definition links (MHL)

Mobile High-Definition Link (MHL) is a proposed industry standard for a mobile audio/video interface for directly connecting mobile phones and other portable consumer electronics (CE) devices to high-definition televisions (HDTVs) and displays. The MHL standard features a single cable with a low pin-count interface able to support up to 1080p high-definition (HD) video and digital audio while simultaneously charging the connected device.

MHL is connection agnostic (i.e., not tied to a specific type of hardware connector). The first implementations dual-purpose the most popular mobile connection (micro USB) and the most popular HDTV connection (HDMI). Other than the connectors being used, no USB nor HDMI technology is being used. It is exclusively MHL signalling through the connectors and over the cable. Other proprietary and custom connections are also allowed.

Almost immediately after the specification was announced, articles appeared highlighting the use of the industry-standard micro-USB connector to send high-definition video and audio, as well as take in power, and use a command bus between the mobile device and the TV.

MHL is based on Silicon Image's technology released in 2008

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