VESA DDC

(redirected from DDC2)

VESA DDC

(VESA Display Data Channel) A VESA standard communications channel between the graphics card and monitor. The DDC is used to pass Extended Display Identification Data (EDID), which is stored in the monitor and describes its characteristics (vendor name, serial number, frequency range, etc.).

DDC requires an additional wire in the cable. The first level implementation (DDC1) provides a unidirectional channel that lets the monitor inform the host of its capabilities. A second bi-directional level (DDC2) allows the host to adjust the monitor. For example, the monitor's switch settings could be put into a software control panel. See VESA DPMS and EDID.
Mentioned in ?
References in periodicals archive ?
This self-powered KVM switch supports most displays with ADC interface and provides superior video quality of up to 1600x1024, DDC, DDC2, DDC2B, and no software installation
DDC1 & DDC2 are trademarks of Video Electronics Standards Association(R).
It can operate in both the DDC1 (Data Display Channel) and DDC2 modes.
For PC users, both MultiSync XV+ monitors have built-in DDC2 Plug and Play compatibility which optimizes screen performance and allows monitor installation without drivers or diskettes.
For PC users, the built-in DDC2 Plug and Play compatibility optimizes screen performance and allows monitor installation without drivers or diskettes.
Bus system: PCI Graphics controller: S3 Trio64V+ Display memory: 1 MByte DRAM (expandable to 2 MBytes), or 2Mbytes DRAM Horizontal frequency: 15 - 170 kHz Pixel clock: up to 135 MHz Standards: VESA DPMS, DDC2 Plug & Play, TUV Ergonomics Approved, CE-certified Power supply: +5V/0.