HDMI 1.4 (redirected from HDMI return channel)

HDMI 1.4

A major upgrade to the HDMI interface, introduced in 2009. HDMI 1.4 added home theater enhancements and new cables, while using plugs and sockets that are compatible with older HDMI cables. Support for 3D formats (for more 3D, see HDMI 1.4a), 4K resolution and camera colors was included (sYCC601, AdobeRGB, and AdobeYCC601 color spaces render still images more accurately on TVs). HDMI 1.4 allows the TV to optimize picture settings by letting the source device declare its content type, such as a movie, game or stills.

Ethernet Over HDMI
TVs, Blu-ray/DVD players and other A/V equipment are increasingly network enabled. HDMI 1.4 includes 100 Mbps Ethernet, which allows all HDMI 1.4-equipped A/V equipment to reach the Internet through the TV's connection. This is why HDMI 1.4 cables are different; certain wires were rearranged.

Audio Return Channel for Home Theaters
TVs with CableCARDs are wired directly to the coax cable coming into the home and not to a cable box. For home theaters with separate sound systems, HDMI 1.4 can redirect the audio going to the TV back to the receiver for surround sound decoding and amplification. See CableCARD.

Automotive Connection System
For automobile entertainment systems, HDMI 1.4 provides an interlocking Type E plug and socket to connect audio and video throughout a vehicle. See HDMI.

Type D Connector

HDMI 1.3 added the Type C Mini connector for camcorders, and HDMI 1.4 added the Type D Micro for handhelds such as cellphones and MP3 players.