Matrox Vio, Установка и справочник по оборудованию

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28 Chapter 3: Matrox Vio Duo Hardware Reference
Analog acquisition
The analog acquisition path captures SD (CVBS, RGB, Y/C, or YPbPr) or HD
(RGB or YPbPr) analog video and converts it to 20-bit YCbCr data.
Low-pass filter
Analog video signals acquired by the expanded video input adapter board pass
through a 4th order Butterworth filter in a low-pass filtering stage. This effectively
restricts the frequency bandwidth and limits high frequency noise and aliasing
effects at the input of the A/D converters in the decoder. Enable the low-pass filter
using the MIL-Lite function
MdigControl() with M_INPUT_FILTER .
Multi-format video decoder
A multi-format video decoder is implemented for analog video acquisition and
subsequent conversion to digitized video with square pixel or ITU-R BT.601
digitization. The decoder can capture standard definition (NTSC, PAL) video in
CVBS, RGB, Y/C, or YPbPr video formats, with either ITU-601or square pixel
digitization, or high definition (720p, 1080i) video in RGB or YPbPr video
format. In addition, it can capture RS-170/CCIR analog monochrome video in
CVBS video format. Component video signals (RGB/YPbPr) can have either
embedded synchronization or external synchronization.
Note that if the decoder is capturing video with square pixel digitization, the
encoder must also operate with the same digitization standard.