Specifications and features of High Definition Multimedia Interface – 1.4 (HDMI 1.4)

HDMI 1.4 is the latest upgrade in HDMI technology. The interface is responsible for transmission of audiovisual signals from a source to your television screen. HDMI transmits digital information at 10.2 gigabytes per second without converting it to analogue. Thus it retains the pristine digital quality of the signals. HDMI 1.4 has incorporated Ethernet connectivity and an audio return channel. The Ethernet connectivity feature enables internet sharing and the audio return channel is for upstream audio transmission.

Specifications of HDMI 1.4

HDMI 1.4 cables now perform enhanced data transmission functions. The standard level HDMI data cable transmits digital information at 1080i/60. The high speed version of the same cable can accommodate data at rates higher than 1080p and supports 3D. As mentioned earlier Ethernet connectivity has been added to enable internet sharing without an extra cable. The automotive HD cable attaches electronic devices to installed HDMI ports in cars.

The HDMI Ethernet channel enables bi-directional communication. The devices connected across this channel can transmit data at 100 megabytes per second. In the past an extra cable was required for upstream audio processing and playback. But HDMI 1.4 has incorporated the audio return channel which enables those very functions without the need of an extra cable.

HDMI 1.4 is the latest version of this technology and is revolutionising the way we watch television.
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