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Display Data Channel (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.
DDC/CI: 1.1 2004/10 DisplayPort: 1.2 2009/12/22 DVI: 1.0 1999/04/02 Enhanced Display Data Channel (E-DDC) 1.2 2007/12/26 Double data rate synchronous dynamic random access memory (DDR SDRAM) JESD79-3 Display Power Management Signaling (DPMS) 1.0 1993 El Torito: 1.0 1995/01/25 Energy Star: 5.0 2008/11/14 Extended Industry Standard Architecture ...
The Display Data Channel or DDC is a digital connection between a computer display and a graphics adapter that allows the display to communicate its specifications to the adapter. The standard was created by VESA .
The transmission of EDID information usually uses the Display Data Channel protocol, specifically DDC2B, which is based on I²C-bus (DDC1 used a different serial format which never gained popularity). The data is transmitted via the cable connecting the display and the graphics card; VGA, DVI, DisplayPort and HDMI are supported. [citation needed]
Display Data Channel (DDC), a data link protocol which a host device can use to control an attached display and communicate EDID, DPMS, MCCS and similar messages; Extended Display Identification Data (EDID), a data format for display identification data
The Display Data Channel (DDC) is a Video Electronics Standards Association (VESA) standard communications channel based on the I 2 C bus specification. HDMI specifically requires the device implement the Enhanced Display Data Channel (E-DDC), which is used by the HDMI source device to read the E-EDID data from the HDMI sink device to learn ...
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The DisplayPort AUX channel is a half-duplex (bidirectional) data channel used for miscellaneous additional data beyond video and audio, such as EDID (I 2 C) or CEC commands. [8]: §2.4 This bidirectional data channel is required, since the video lane signals are unidirectional from source to display. AUX signals are transmitted across a ...