VESA Display Data Channel(VESA 显示数据频道，简称VESA DDC)，是VESA为了显示器提供即插即用的功能而制定的标准。

显示设备数据可以通过VGA，DVI，HDMI端子向显示卡提供显示器生产厂家，型号，分辨率等各种固有信息。

信号线分为数据线，时钟同步线和接地线3种类型。

信号格式为EDID(Extended Display Identification Data)。

The Display Data Channel, or DDC, is a collection of protocols for digital communication between a computer display and a graphics adapter that enable the display to communicate its supported display modes to the adapter and that enable the computer host to adjust monitor parameters, such as brightness and contrast.