Mobile High-Definition Link

Mobile High - Definition Link ( MHL ) is a wired interface for mobile devices, with the high-resolution audio and video data from a mobile device (mobile phone, tablet ) can be transmitted to a screen. Over the same cable can be loaded simultaneously, the mobile device. MHL is an alternative to the HDMI standard.

Standardization

MHL has already been developed in 2009 by a consortium of Nokia, Samsung, Toshiba, Sony, and Silicon Image. The specification 1.0 has been around since June 2010. Inserted on the market but it was not until the beginning of 2011 in the phone Samsung Galaxy S II

Function

About the MHL port, a display device (HDTV, screen, video projector, etc.) supply the connected device with power. 500 mA at 5 V are defined for the MHL 1.0 standard, for MHL 2.0 900 mA at 5 V. When a mobile device with a corresponding HDTV connected, and the mobile device with HDMI - CEC compatible remote controls can be controlled. Will transmit an uncompressed video signal up to 1080p resolution and an uncompressed 8- channel audio ( 7.1 surround sound ). The HDCP encryption is also supported, as would be denied by the movie industry, otherwise playback of DRM - protected material.

Connector

MHL is not bound to a particular port / plug. Most of the connection, however, is executed in the form of a micro-USB socket. So far, the 5-pin standard micro - USB connector was used to. However, only the form factor of the USB connector is used, the above current signals follow the MHL specification, so are neither USB nor HDMI signals. However, the Samsung Galaxy S III led a deviating 11 -pin connector with an extended functionality (USB -To- Go), which requires special cable.