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(High-Definition Multimedia Interface) A digital interface for audio and video that provides a single-cable solution for home theater and consumer electronics equipment such as TVs, Blu-ray/DVD players and set-top boxes. Introduced in 2002, one HDMI cable took the place of nine different analog audio and video cables.

HDMI supports eight channels of 24-bit uncompressed audio at 192kHz and 4K video resolution up to 4096x2160 (as of HDMI 1.4). It also provides copy protection, A/V equipment control, 5 volts of power and compatibility with DVI and DisplayPort interfaces. For more HDMI details, look up the following:

Version summary, see HDMI versions.
Cable versions, see HDMI cable types.
A/V control, see HDMI CEC.
Compatibility, see HDMI-DVI compatibility and DisplayPort.
Audio return channel, see HDMI ARC.
Copy protection, see HDCP.

Common 19-Pin Connectors
Type A is for TVs and home theater equipment, while camcorders and cellphones use Type C and D. A more secure Type E is used in vehicles, and a 29-pin Type B supports dual-link DVI resolution (see DVI).

HDMI vs. All the Others
This earlier Roku streaming hub was on the market during the transition stage from analog to digital TV. See A/V ports.

An HDMI Switch
HDMI switches let several HDMI sources plug into a TV with only one HDMI input. This Oppo unit switches three inputs. See HDMI switch. (Image courtesy of Oppo Digital, Inc., www.oppodigital.com)
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References in periodicals archive ?
Making the appearance by video connection means the accused avoids all of these measures and also reduces public expense.
A CHILDREN'S charity has slammed the "astonishing and appalling" imbalance in the availability of video connections for young witnesses to give evidence in court, compared to suspected criminals.
Sheriff's departments use the video connections for court proceedings instead of transporting prisoners to courtrooms.
At the end of each arm is a gripper packed with features including a retractable motorised socket wrench to turn bolts and connect or detach hardware; a camera and lights for close-up viewing; and a retractable umbilical connector to provide electricity, data and video connections.
The North Dakota model relies on pharmacy technicians and specially trained registered nurses who maintain contact with licensed pharmacists via video connections.
Some of the desktop PCs and laptops that needed to be connected only had USB ports for keyboard and video connections. In these cases, the Adder CCUSB cable was used, which features USB and VGA from the computer and PS/2 and VGA into the switch.
-- Only Blackmagic has products compatible with Adobe Production Studio that feature both analog and SDI digital video connections;
In addition, InPurple Procall is a single, centrally managed network that can support voice, data and real-time video connections.
One could say the video switching is designed with a similar notion in mind, except that most home theater configurations are going to have at most four video inputs, and only one of these will have component video connections. VCRs, cable, and satellite connections are generally coaxial.
This player also has all the necessary video connections including composite, component and S-video; It also includes an optical and stereo analog audio connection.
Each unit will have Home Director's Network Connection Center, an expandable foundation for a complete structured wiring system, video connections to distribute television signals to four rooms in the home, accommodations for eight telephone/data lines with support for four incoming telephone numbers, and prewired windows and doors for security devices.
There are also video connections through enhanced CAT 6 cables in each classroom and library, allowing higher frequencies and longer distances to be realized, and 120 channels of video to be transmitted versus 70 over CAT 5e.