|
High-Definition
Multimedia Interface |
HDMI official logo |
|
Type |
Digital audio/video
connector |
|
Production history |
|
Designer |
The HDMI group |
|
Designed |
December
2002 |
|
Produced |
2003 |
|
Specifications |
|
Hot pluggable |
Yes |
|
External |
Yes |
|
Audio signal |
PCM, DVD-Audio, Super
Audio CD, Dolby TrueHD, DTS-HD Master Audio |
|
Video signal |
480i, 480p, 576i, 576p,
720p, 1080i, 1080p, 1440p, etc. |
|
Bandwidth |
10.2 Gbit/s
at 340 Mpixel/s |
|
Pins |
19 |
|
Pin out |
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Type A (Female) HDMI |
|
Pin 1 |
TMDS Data2+ |
|
|
Pin 2 |
TMDS Data2 Shield |
|
|
Pin 3 |
TMDS Data2– |
|
|
Pin 4 |
TMDS Data1+ |
|
|
Pin 5 |
TMDS Data1 Shield |
|
|
Pin 6 |
TMDS Data1– |
|
|
Pin 7 |
TMDS Data0+ |
|
|
Pin 8 |
TMDS Data0 Shield |
|
|
Pin 9 |
TMDS Data0– |
|
|
Pin 10 |
TMDS Clock+ |
|
|
Pin 11 |
TMDS Clock Shield |
|
|
Pin 12 |
TMDS Clock– |
|
|
Pin 13 |
CEC |
|
|
Pin 14 |
Reserved (N.C. on device) |
|
|
Pin 15 |
SCL |
|
|
Pin 16 |
SDA |
|
|
Pin 17 |
DDC/CEC Ground |
|
|
Pin 18 |
+5 V Power |
|
|
Pin 19 |
Hot Plug Detect |
HDMI (High-Definition Multimedia Interface) is the first and only industry-supported, uncompressed, all-digital audio/video interface. By delivering crystal-clear, all-digital audio and video via a single cable, HDMI dramatically simplifies cabling and helps provide consumers with the highest-quality home theater experience. HDMI provides an interface between any audio/video source, such as a set-top box, DVD player, or A/V receiver and an audio and/or video monitor, such as a digital television (DTV), over a single cable.
HDMI supports standard, enhanced, or high-definition video, plus multi-channel digital audio on a single cable. It transmits all ATSC HDTV standards and supports 8-channel, 192kHz, uncompressed digital audio and all currently-available compressed formats (such as Dolby Digital and DTS), HDMI 1.3 adds additional support for new lossless digital audio formats Dolby TrueHD and DTS-HD with bandwidth to spare to accommodate future enhancements and requirements.
-
HDMI is the de facto standard digital interface for HD and the consumer electronics market: More than 400 companies have become adopters, and more than 60 million devices featuring HDMI are expected to ship in 2006 (conservative estimate by In-Stat).
- Convergence – HDMI is the interface for convergence of PC and consumer electronics devices: HDMI enables PCs to deliver premium media content including high definition movies and multi-channel audio formats. HDMI is the only interface enabling connections to both HDTVs and digital PC monitors implementing the DVI and HDMI standards.
-
Evolving standard – HDMI is continually evolving to meet the needs of the market: Products implementing new versions of the HDMI specification will continue to be fully backward compatible with earlier HDMI products.
What are the advantages of HDMI over existing analog interfaces such as composite, S-Video and component video?
Quality: HDMI transfers uncompressed digital audio and video for the highest, crispest image quality.
All-Digital:
HDMI ensures an all-digital rendering of video without the losses associated with analog interfaces and their unnecessary digital-to-analog conversions.
Low-cost:
HDMI provides the quality and functionality of a digital interface while also supporting uncompressed video formats in a simple, cost-effective manner.
Audio:
HDMI supports multiple audio formats, from standard stereo to multi-channel surround-sound.
Ease-of-use:
HDMI combines video and multi-channel audio into a single cable, eliminating the cost, complexity, and confusion of multiple cables currently used in A/V systems.
Intelligence:
HDMI supports two-way communication between the video source (such as a DVD player) and the DTV, enabling new functionality such as automatic configuration and one-touch play.
Sources: HDMI.org &
Wikipedia
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