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What is MHL?

Date:2015-10-29
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 being developed by the MHL Consortium, a consortium of developers of mobile devices.


Features

The HDTV provides power to the connected device.
Uses a single, thin cable to connect the mobile device to the HDTV.
The HDTV remote will control the connected device with guaranteed mixed manufacturer interoperability (CEC).[1] (also see Silicon Image's press release about MHL on December 14, 2010). Note: The built-in RCP (Remote Control Protocol) function allows you to use the Remote Control of HDTV to operate the MHL mobile device through HDTV’s CEC function.

1080p uncompressed HD video.

8 channel (e.g., 7.1 surround sound) uncompressed audio.
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 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.
By transporting the digital content in digital form, the full impact of the picture (whether still images or video) can be seen on HDTVs.