4 VP-81K - Overview
3.1 DDC Support
When establishing a VGA connection between a PC or laptop and a display device, a
set of parameters known as EDID is exchanged between them, which is carried over
the DDC channel. In some PC graphic cards and laptops, this information exchange is
essential for proper VGA OUT operation.
3.2 Defining EDID
The Extended Display Identification Data (EDID) is a data-structure provided by a
display, to describe its capabilities to a graphics card (that is connected to the
display’s source). The EDID enables the VP-81K to “know” what kind of monitor is
connected to the output. The EDID includes the manufacturer’s name, the product
type, the timing data supported by the display, the display size, luminance data
and (for digital displays only) the pixel mapping data.
EDID is defined by a standard published by the Video Electronics Standards
Association (VESA).
3.3 Defining the VP-81K 8x1 UXGA/Audio Switcher
This section defines the VP-81K.