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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)
References in periodicals archive ?
If you have a DVD player, it can be routed directly to the monitor with a composite, S-video, or component video connection.
DVD players can offer three types of video connections.
Paul Gathercoal, associate professor and director of educational technology, said Cal Lutheran will create audio and video connections with three nearby magnet schools: Santa Susana High School in Simi Valley, Walnut Canyon School in Moorpark and Charles Blackstock School in the Hueneme School District.
Support for the multiple inputs can eliminate the need for end users to redo system video connections and multi-stream capture on a single-slot PCIe card can reduce system cost and footprint.
In addition, Sonera will implement various commentator, audio and video connections in cooperation with the Finnish broadcasting company YLE.
323 video connections across lowcost converged WANs.
Video connections could be allowed in Danish courts, according to a report from the legal issues council (Retsplejeradet).
Tellabs has won a contract to assist Saudi Telecom Co with the migration of its analogue voice and data services to a digital network offering high-speed Internet access, video connections and virtual private networks to customers.