HDMI 1.4

(redirected from audio 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.

Audio Return Channel (ARC) for Home Theaters
Starting in HDMI 1.4, the audio return channel allows the TV to become the central hub in the home theater. As HDTVs include more input ports, and as more sources are built into the TV, the TV set becomes the natural central switching point. For more details, see HDMI ARC.

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; wires were rearranged.

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 and HDMI cable types.

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.
References in periodicals archive ?
One HDMI output with Audio Return Channel (ARC) and CEC
The Sony HT-ST7 sound bar speaker uses advanced technologies like Audio Return Channel (ARC) and HDMI for convenient set up with just a single cable.
Integrated HDMI([R]) Audio Return Channel compatible with LR-Audio
Audio Return Channel - Allows audio to be returned from display back to HDMI source for amplification and display.
Both parts fully integrate Audio Return Channel and are compatible with the growing number of MHL[TM]- (Mobile High-Definition Link) enabled smartphones and tablets.
Five HDMI inputs - including 3D, deep color, 4K pass through and one HDMi output with audio return channel - permit connected devices to benefit from the Dolby TrueHD and DTS-HD Master Audio[sup.
Along with eight HDMI inputs with 3D, Deep Color, CEC and Audio Return Channel, the AVR 2700 also features Dolby Volume and EZSet/EQ technology to maximize audio performance.
4 innovations such as 4k display resolution,3D, Audio Return Channel, and HDMI Ethernet Channel, may be unusable with an older AVR.
Synopsys' proven DesignWare HDMI solutions offer a compelling combination of small area, low power and support for the latest features, including HDMI Ethernet Audio Return Channel and 3D formats.
All of the home theater systems feature Audio Return Channel (ARC*), which makes it possible to receive audio signals from the TV, on top of the preexisting HDMI function of sending audio/video signals to the TV with just one cable.
HDMI Ethernet Channel - Allows 100 Mb/s Ethernet between two HDMI connecting devices; Audio Return Channel -Allows audio to be returned from display back to HDMI source for amplification and display.