24 Facts About HDMI

CEA-861 signals carried by HDMI are electrically compatible with the CEA-861 signals used by the Digital Visual Interface.

Several versions of HDMI have been developed and deployed since the initial release of the technology, but all use the same cable and connector.

In Europe, either DVI-HDCP or HDMI is included in the HD ready in-store labeling specification for TV sets for HDTV, formulated by EICTA with SES Astra in 2005.

HDMI began to appear on consumer HDTVs in 2004 and camcorders and digital still cameras in 2006.

HDMI founders were Hitachi, Panasonic, Philips, Silicon Image, Sony, Thomson, and Toshiba.

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HDMI has the support of motion picture producers Fox, Universal, Warner Bros.

On January 28, 2008, In-Stat reported that shipments of HDMI were expected to exceed those of DVI in 2008, driven primarily by the consumer electronics market.

From October 25, 2011, all development of the HDMI specification became the responsibility of the newly created HDMI Forum.

HDMI specification defines the protocols, signals, electrical interfaces and mechanical requirements of the standard.

Digital audio, if an HDMI device has audio, it is required to implement the baseline format: stereo PCM.

HDMI carries any IEC 61937-compliant compressed audio stream, such as Dolby Digital and DTS, and up to 8 channels of one-bit DSD audio at rates up to four times that of Super Audio CD.

HDMI standard was not designed to pass closed caption data to the television for decoding.

HDMI has three physically separate communication channels, which are the DDC, TMDS and the optional CEC.

Consumer Electronics Control is an HDMI feature designed to allow the user to command and control up to 15 CEC-enabled devices, that are connected through HDMI, by using only one of their remote controls (for example by controlling a television set, set-top box, and DVD player using only the remote control of the TV).

HDMI is backward compatible with single-link Digital Visual Interface digital video.

CSS, CPRM and AACS require the use of HDCP on HDMI when playing back encrypted DVD Video, DVD Audio, HD DVD and Blu-ray Disc.

Category 1 HDMI cables are marketed as "Standard" and Category 2 HDMI cables as "High Speed".

An HDMI extender is a single device powered with an external power source or with the 5V DC from the HDMI source.

HDMI devices are manufactured to adhere to various versions of the specification, in which each version is given a number or letter, such as 1.

All future versions of the HDMI Specification were produced by the HDMI Forum, created on October 25, 2011.

Successive versions of the HDMI Specification continue to add support for additional formats, but the added support is to establish standardized timings to ensure interoperability between products, not to establish which formats are or aren't permitted.

Legacy interfaces such as VGA, DVI and LVDS have not kept pace, and newer standards such as DisplayPort and HDMI clearly provide the best connectivity options moving forward.

HDMI has a few advantages over DisplayPort, such as ability to carry Consumer Electronics Control signals, and electrical compatibility with DVI (though practically limited to single-link DVI rates).

Mobile High-Definition Link is an adaptation of HDMI intended to connect mobile devices such as smartphones and tablets to high-definition televisions (HDTVs) and displays.