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This section relies too much on references to primary sources. Please improve this section by adding secondary or tertiary sources. February Learn how and when to remove this template message EDID structure versions range from v1.
Version 2. Some VGA connectors in personal computers provided a basic form of identification by connecting one, two or three pins to ground, but this coding was not standardized. However, the value is later used by DDDB.
This means that many graphics cards cannot express the native resolutions of the most common wide screen flat panel displays and liquid crystal display televisions.
The number of vertical pixels is calculated from the horizontal resolution and the selected aspect ratio. Specifying pixels as the screen width would yield an unnatural screen height of For these panels to be able to show a pixel perfect image, the EDID data must be ignored by the display driver or the driver must correctly interpret the DTD and be able to resolve resolutions whose size is not divisible by 8. Special programs are available to override the standard timing descriptors from EDID data.
Extended Display Identification Data
This section relies too much on references to primary sources. Please improve this section by adding secondary or tertiary sources. February Learn how and when to remove this template message EDID structure versions range from v1. Version 2. Some VGA connectors in personal computers provided a basic form of identification by connecting one, two or three pins to ground, but this coding was not standardized.
It is recommended that source devices e. Content, in context, could mean any or all of video, audio, Internet web pages, interactive video games. Preferred timing mode specified in descriptor block 1. In order to convey the information across the interface, a packet structure is used. These segments can either transmit or block light, an image is produced by passing light through selected segments of the liquid crystal to the viewer 5. In that case, the EDID byte detailed timing descriptor could be modified to reflect the proper picture aspect ratio. BNC prevents crosstalk by maintaining full coaxial shielding through the circular connectors, the requirement to press and turn the plug shell to disconnect requires access space around each connector to allow grasping of each BNC plug shell.
EIA CEA-861B PDF