HDMI
From DigiWiki
HDMI stands for High Definition Multimedia Interface. It is a digital video and audio carrying connector that mandates HDCP copy protection. It is backwards compatible with DVI, meaning that you can input a DVI source to a HDMI capable display with the appropriate DVI to HDMI cable/adapter.
There are various revisions of HDMI, the table below (courtesy of http://en.wikipedia.org/wiki/HDMI#HDMI_and_high-definition_optical_media_players) highlights the differences:
| HDMI revision | 1.0 | 1.1 | 1.2/1.2a | 1.3/1.3a/1.3b |
|---|---|---|---|---|
| Maximum signal bandwidth (MHz) | 165 | 165 | 165 | Yes |
| Maximum TMDS bandwidth (Gbit/s) | 4.95 | 4.95 | 4.95 | Yes |
| Maximum video bandwidth (Gbit/s) | 3.96 | 3.96 | 3.96 | Yes |
| Maximum audio bandwidth (Mbit/s) | 36.86 | 36.86 | 36.86 | 36.86 |
| Resolutions possible over single link HDMI at 24bits per pixel | 1920x1080p60 | 1920x1080p60 | 1920x1080p60 | Yes |
| RGB | Yes | Yes | Yes | Yes |
| YCbCr | Yes | Yes | Yes | Yes |
| xvYCC | No | No | No | Yes |
| Deep Color | No | No | No | Yes |
| Maximum Color Depth (bits per pixel) | 24 | 24 | 24 | Yes |
| Consumer Electronic Control (CEC)** | Yes | Yes | Yes | Yes |
| Updated list of CEC commands*** | No | No | No | No {1.3a-yes) |
| Auto lip-sync | No | No | No | Yes |
| 8channel/192 kHz/24-bit audio capability | Yes | Yes | Yes | Yes |
| DVD-A support | No | Yes | Yes | Yes |
| SACD (DSD) support **** | No | No | Yes | Yes |
| Dolby TrueHD bitstream capable | No | No | No | Yes |
| DTS-HD Master Audio bitstream capable | No | No | No | Yes |
| Blu-ray/HD DVD video and audio at full resolution***** | Yes | Yes | Yes | 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.
*** = Large number of additions and clarifications for CEC commands. One addition is CEC command allowing for volume control of an AV receiver.
**** = Playback of SACD may be possible for older revisions if the signal source (such as the Oppo 970) converts to LPCM. For those receivers that have only PCM DAC converters and not DSD, this means that no additional resolution loss occurs.
***** = Even for audio bitstream formats that a given HDMI revision can not transport, it may still be possible to decode the bitstream in the player and transmit the audio as LPCM.
