What is HDMI?
High-Definition transmission Interface (HDMI) is one in every of the industry-supported digital audio / electronic equipment interfaces. HDMI provides associate interface between many appropriate digital audio / video sources, like set-top boxes, videodisk players or Jewish calendar month receivers and digital audio and / or appropriate video monitors, like digital tv (DTV).
HDMI supports normal, higher or high definition video, and multi channel digital audio on one cable. This doesn't rely upon DTV standards like ATSC, and DVB (-T, -S, -C), as a result of all of them area unit encapsulated MPEG knowledge streams, that area unit passed on the decoder, and are available out as uncompressed video knowledge, which may be high definition. This video knowledge is then encoded into TMDS for digital transmission via HDMI. HDMI conjointly supports eight uncompressed digital audio channels. beginning with version one.2, HDMI presently supports up to eight one-bit audio channels. One bit audio is employed on the Super CD.
The standard HDMI group A connexion has nineteen pins, whereas the next resolution version known as blood type has been outlined, though it's not been utilized in general. blood type has twenty nine pins, that area unit capable of carrying swollen video channels to be used with high resolution displays. blood type is meant to support resolutions over 1080p.
HDMI group A is additionally compatible with one Digital Visual Interface (DVI-D) affiliation used on fashionable pc monitors and graphics cards. this suggests that the DVI supply will drive the HDMI monitor, or the other way around, with the suitable adapter or cable, however the audio options and HDMI remote are going to be inaccessible. additionally, while not support for High-Bandwidth Digital Content Protection (HDCP) at each ends, the standard and backbone of the video are often reduced with the signal supply to forestall users from viewing or additional specifically recording protected content. (Almost all HDMI connections support HDCP, whereas some DVI connections don't.) HDMI blood type matches the previous twin DVI relationships.
The founders of HDMI area unit client physical science manufacturers, specifically Hitachi, Matsushita electrical Industrial (Panasonic / National / Quasar), Philips, Sony, Thomson (RCA), Toshiba, and Si Image. Digital Content Protection, LLC (Intel branch) provides HDCP for HDMI. HDMI has conjointly been supported by major film producers Fox, Universal, Warner Bros., and Disney, moreover as DirecTV and EchoStar (Dish Network) system operators moreover as CableLabs and Samsung.
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