DisplayPort
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| Display Port | ||
|---|---|---|
| Type | Digital audio/video connector | |
| Production history | ||
| Designer | VESA | |
| Audio signal | Yes | |
| Video signal | Yes | |
DisplayPort is a new digital display interface standard (approved May 2006) being put forth by the VESA (Video Electronics Standards Association). It defines a new license-free state-of-the-art digital audio/video interconnect, intended to be used primarily between a computer and its display monitor, or a computer and a home-theater system.
DisplayPort connector supports 1 to 4 data pairs at main link that also carries audio and clock signals, with transfer rate of 1.62 or 2.7 gigabit per second. Video signal supports 8 or 10 bit pixel format per colour channel. A bi-directional auxiliary channel runs at constant 1 megabit per second, serves as Main Link management and device control using VESA EDID and VESA MCCS standards. Video signal is not compatible with DVI or HDMI.
DisplayPort includes optional DPCP (DisplayPort Content Protection) copy-protection from Philips, which uses 128-bit AES encryption, with secure modern ciphers. It also features full authentication and session key establishment (each encryption session is independent). There is an independent revocation system. This portion of the standard is licensed separately.
The existing competitor for this new interface standard is the increasingly-common HDMI connector (with HDCP copy-protection). A possible future competitor is Unified Display Interface.
Current revision is 1.1, new in 1.1 is that it supports HDCP content-protection. Revision 2.0 is planned.
[edit] Advantages
- 10 Gbit/s forward link channel supports high resolution monitors, 2560x1600, with single cable. Note: 70fps*24bpp*2560*1600=6.9 Gbit/s, not taking into account blanking.
- Open and extensible standard to help with broad adoption.
- Supports increased color depth of 6, 8 and 10 bits.
- Full bandwidth transmission for 3 meter cable.
- Reduced bandwidth transmission, 1080p, for 15 meter cable.
- DisplayPort connector assists in blind connection by just feeling.
- Supports internal and external connections so that one standard can be used by computer makers reducing costs.[1]
Note: The specifications can be downloaded at www.vesa.org with free registration: https://fs16.formsite.com/VESA/form608559305/secure_index.html
[edit] External links
- Rival display interfaces face off. EETimes (2006-05-22). Retrieved on 2006-06-04.
- DisplayPort's back -- with Dell, HP, and Lenovo. Engadget (2006-05-04). Retrieved on 2006-05-28.
- VESA (2006-05-03). New DisplayPort(TM) Interface Standard for PCs, Monitors, TV Displays and Projectors Released. Press release. Retrieved on 2006-05-28.
- Commentary: Will VESA survive DisplayPort?. DigiTimes (2005-10-13). Retrieved on 2006-05-28.
- VESA DisplayPort Standard v1.0. Audioholics (2005-08-21). Retrieved on 2006-05-28.
- PC, CE firms to develop 'unified' display connector. Channel Register (2005-05-21). Retrieved on 2006-05-28.
- "DisplayPort" Could Introduce Protected Displays. ExtremeTech (2005-05-10). Retrieved on 2006-05-28.
- DisplayPort: Another Piece of Hardware That Thinks You’re a Thief. Gizmodo (2005-05-10). Retrieved on 2006-05-28.
- VESA (2005-05-09). VESA Announces Plan to Develop New Digital Display Interface Standard. Press release. Retrieved on 2006-05-28.
| Audio and video connectors |
|---|
| Single conductor: Binding post | Banana plug | Fahnestock clip |
| Audio: RCA | Jack plug | XLR | DIN / Mini-DIN | BNC | DB25 | Speakon | TosLink |
| Video: DVI / Mini-DVI / UDI | RCA | VGA / Mini-VGA | DFP | P&D | BNC | DIN / Mini-DIN | 13W3 | D4 | DisplayPort |
| Multi: ADC | HDMI | TRS | SCART | F | Belling-Lee | DisplayPort |
![[1]](http://www.audioholics.com/news/uploads/DisplayPortDVIHDMIcompared.gif){kind=link}