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Breakdown Comparison Chart
| Comparison of Video Interconnect Standards | | Description | DVI | HDMI | UDI | DisplayPort | | Revision | 1.0 | 1.3a | 1.0a | 1.1 | | Introduced | Apr 2, 1999 | Dec 9, 2002 | Jun 16, 2006 | May 2006 | | Last Change | Apr 2, 1999 | Nov 10, 2006 | Jul 12, 2006 | Mar 19, 2007 | | Impetus | Visual | Visual/Audio | Visual/Audio | High Speed, Flexible Wrapper for Visual/Audio + Data | | Controlling Authority | Digital Display Working Group | Digital Display Working Group | UDI Promoters | VESA | | Type | Proprietary, Free | Proprietary, Fee based | Proprietary, Free | Open, Free | | Backward Compatibility | VGA | DVI | HDMI | HDMI | | Digital | Yes | Primary | Primary | Primary | | Analog | Optional | Optional | Optional | Indirect | | Fiber Optics | Yes | Indirect | Indirect | Yes | | RF | No | No | No | Yes | | Video | Yes | Yes | Yes | Yes, Optional | | Audio | No | 8-channel, 192 kHz, 24-bit uncompressed | 8-channel, 192 kHz, 24-bit uncompressed | 8-channel, 192 kHz, 24-bit uncompressed | | Data | No | Limited | Limited | 1 MB/s dedicated + lane space | | Note: DisplayPort does not require video or audio data. | | Security | 40-bit HDCP | 40-bit HDCP | 40-bit HDCP | 128-bit AES DPCP & 40-bit HDCP | | Note: HDCP is a fee-based encryption protocol. DPCP, by Philips, is free. | | Max bits/pixel | 24 (48 is allowed, but not officially defined) | 48 | 36 | 48 | | Min bits/pixel | 12 | 24 | 18 | 18 | | Max Resolution | 2560 x 1600 | 2560 x 1600 | 2560 x 1600 | 2560 x 1600 | | Note: Higher custom resolutions may also be available. | | Min Resolution | 640 x 480 | 640 x 480 | 640 x 480 | zero, video data is optional | | Note: Only computer video modes are displayed. | | Max Refresh Hz | 120 | 120 | 120 | Variable, 120 | | Min Refresh Hz | 60 | 50 | 60 | zero | | Note: Interconnects used for TV signals can clock as low as 24 Hz | | Max Pixel Clock | 340 MHz (in dual-link mode, 165 MHz in single-link mode) | 340 MHz (in dual-link mode, 165 MHz in single-link mode) | At least 414 MHz | At least 450 MHz | | Min Pixel Clock | 25.175 MHz | 25.175 MHz | 25.175 MHz | zero | | Max Bandwidth | 3.96 Gbps (10.2 Gbps in dual-link mode) | 3.96 Gbps (10.2 Gbps in dual-link mode) | 16 Gbps | 10.8 Gbps | | Rigid Clock Signal | Yes | Yes | Yes | No | | Hot Plug | Yes | Yes | Yes | Yes | | Audio Included | No | IEC 61937, up to 6.144 Mbps | Indirectly (via HDMI) | IEC 60958, up to 6.144 Mbps | | Signal Repeater Defined | No | Yes | Yes | Yes | | 1080p | Yes | Yes | Yes | Yes | | 1080i | Yes | Yes | Yes | Yes | Note: All standards support video modes below 1080i.
It should also be noted that each specification is nearly identical in theoretical maximum limits to the others. The differences in the number of pins and defined implementation are the only real limits. DisplayPort is the most flexible definition because of its packaging system for data. It speaks to the future needs of variable payloads, and not just audio and video. The other standards could also be redefined to move data in this way, but are not currently. | | Supporters | Intel, Compaq, Fujitsu, Hewlett Packard, IBM, NEC and Silicon Image | Hitachi, Matsushita, Philips, Silicon Image, Sony, Thompson, Toshiba | Apple, Intel, LG, National Semiconductor, Samsung, Silicon Image | Agilent, AMD, Apple, Dell, Hewlett Packard, Intel, Lenovo, Molex, NVIDIA, Philips, Samsung, several others. Officially supported by VESA as the new standard. |
Read on next page: Background - Display interface considerations and standards
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