DDC stands forDisplay Data Channel. DDC was created by theVideo Electronic Standards Association (VESA) and it is a digital connection between a source device and a display device, like a computer graphics card and a computer monitor. It is used for the transfer of specification data from the display device to the source. The information is generally stored on anEDID ROM chip included with the display device.

The DDC standard is in use with theVGA,DVI andHDMI connection standards. TheDigital Rights Management (DRM) standard known asHigh-bandwidth Digital Content Protection (HDCP) - used to protect High Definition video data as it travels between devices from being copied - utilises the DDC channel to initiate a handshake between a source device (like aHD DVD player) and a display (HD Television).

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