HDMI (High-Definition Multi-media Interface) is a new standard in A/V Audio/Visual connections that is used to transmit digital signals from your cable set top box, DVD player or satellite receiver to your high definition television (HDTV), LCD TV, LCD projector, plasma TV, or any other device that supports HDMI connections.
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Specifications
Hot plugable 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 (with HDMI v 1.3) 10.2 Gbps at 340 Mpixels/sec
Pins 19
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Detail of benefits of HDMI over traditional analog connections include: |
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All-digital rendering of video without the losses associated with analog interfaces and their unnecessary digital-to-analog conversions.
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Lower cost: a single HDMI connection replaces 3 video connections for high definition video and 6 audio connections for high-resolution audio.
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Audio: HDMI supports multiple audio formats, from standard stereo to multi-channel surround-sound.
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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.
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Intelligence: HDMI supports two-way communication between the video source (such as a DVD player) and the DTV, enabling new functionality.
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HDMI has the capacity to support existing enhanced and high-definition video formats including 480p, 720p, 1080i, and even 1080p as well as standard definition formats such as NTSC or PAL. |
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The standard Type A HDMI connector has 19 pins and a higher resolution Type B also exists but is not yet in common use.
HDMI is backwards-compatible with the single-link Digital Visual Interface (DVI) commonly found on older HD televisions and set top devices through the use of a suitable adapter or cable, but the audio and remote control features of HDMI will not be available.
Additionally, without support for HDCP, the video quality and resolution may be downgraded by the player unit. |
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HDMI™ 1.3
New Capabilities at a Glance
• Higher speed -
10.2 Gbps
• New losslessaudio formats
• Lip sync correction
• New mini connector
• Deep Color support
• Broader color space |
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With the launch of version 1.3, HDMI continues to increase its overall capabilities to meet the needs of the High-Definition marketplace.
HDMI 1.3 includes the following new features:
Higher Speed - 10.2 Gbps
HDMI 1.3 increases its single-link bandwidth from 165 MHz (4.95 Gbps) to 340 MHz (10.2 Gbps) to support the demands of future high definition display devices:
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Deep Color - increasing the color depth from millions to billions of colors
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Higher resolutions - over 400% greater resolution than 720p HDTV
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High frame rates - higher refresh rates (up to 120 Hz) for smoother motion
New Lossless Audio Formats
HDMI 1.3 adds additional support for new, lossless compressed digital audio formats Dolby® TrueHD and DTS-HD Master Audio™ for theater-like, professional
sound quality.
Lip Sync
HDMI 1.3 incorporatesan automatic audio/video syncing capability that allows devices to perform this synchronization automatically with accuracy.
New Mini Connector
With small portable devices such as HD camcorders and still cameras demanding seamless connectivity to HDTVs, HDMI 1.3 offers a new, smaller form factor connector option.
Broader Color Space
HDMI 1.3 removes virtually all limits on color selection. The human eye can see a broad range of color. Standard RGB color space allows the display of a portion of the colors that are viewable to the human eye. The next generation “xvYCC” color space can display virtually the entire gamut of colors viewable by the human eye
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Next-generation “xvYCC” color space supports 1.8 times as many colors as existing HDTV signals
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Lets HDTVs display colors more accurately
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Enables displays with more natural and vivid colors
Deep Color
HDMI 1.3 supports 30-bit, 36-bit and 48-bit (RGB or YCbCr) color depths, up from the 24-bit depths in previous versions of the HDMI specification.
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Lets HDTVs and other displays go from millions of colors to billions of colors
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Eliminates on-screen color banding, for smooth tonal transitions and subtle gradations between colors
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Enables increased contrast ratio
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Can represent many times more shades of gray between black and white. At 30-bit pixel depth, four times more shades of gray would be the minimum, and the typical improvement would be eight times or more |
HDMI 1.2 and HDMI 1.3 versus Standard 720p
HDMI standard evolution and capabilities
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HDMI revision |
1.0 |
1.1 |
1.2/1.2a |
1.3/1.3a/1.3b |
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Maximum signal bandwidth (MHz) |
165 |
165 |
165 |
340 |
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Maximum TMDS bandwidth (Gbit/s) |
4.95 |
4.95 |
4.95 |
10.2 |
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Maximum video bandwidth (Gbit/s) |
3.96 |
3.96 |
3.96 |
8.16 |
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Maximum audio bandwidth (Mbit/s) |
36.86 |
36.86 |
36.86 |
36.86 |
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Resolutions possible over single link HDMI at 24bits per pixel |
1920x1080p60 |
1920x1080p60 |
1920x1080p60 |
2560x1600p60 |
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RGB |
yes |
yes |
yes |
yes |
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YCbCr |
yes |
yes |
yes |
yes |
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Deep Color |
no |
no |
no |
yes |
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Maximum Color Depth (bits per pixel) |
24 |
24 |
24 |
48* |
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Consumer Electronic Control (CEC)** |
yes |
yes |
yes |
yes |
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8channel/192 kHz/24-bit audio capability |
yes |
yes |
yes |
yes |
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Dolby TrueHD bitstream capable |
no |
no |
no |
yes |
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DTS-HD Master Audio bitstream capable |
no |
no |
no |
yes |
* 36-bit support is mandatory for Deep Color compatible CE devices with 48-bit support being optional.
** CEC has been in the HDMI specification since version 1.0 but has only begun to be used in CE products with HDMI version 1.3.
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HDMI Type C Connector Interface (HDMI Rev 1.3) |
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Pin |
Signal |
Pin |
Signal |
| 1 |
TMDS Data2 Shield |
2 |
TMDS Data2+ |
| 3 |
TMDS Data2- |
4 |
TMDS Data1 Shield |
| 5 |
TMDS Data1+ |
6 |
TMDS Data1- |
| 7 |
TMDS Data0 Shield |
8 |
TMDS Data0+ |
| 9 |
TMDS Data0- |
10 |
TMDS Clock Shield |
| 11 |
TMDS Clock+ |
12 |
TMDS Clock- |
| 13 |
DDC/CEC Ground |
14 |
CEC |
| 15 |
SCL |
16 |
SDA |
| 17 |
Reserved |
18 |
+ 5V Power |
| 19 |
Hot Plug Detect |
Shell |
Ground Plane |
