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88 Chapter 6: The Matrox Orion modules for 4Sight-II
NTSC video format
Y component
U and V
components
12.27 MHz
6.14 MHz each
The sampling rate depends on the video standard used:
Pixel sampling rate
12.27 MHz
Pixel converter
Once the analog video has been converted to digitized video, the digital video
enters a component called the pixel converter.
The pixel converter accepts all data signals provided by the decoders, and formats
the digitized video for the Matrox G450 graphics controller.
The pixel converter contains the following elements:
• Pixel formatter.
• Capture control.
From digitizing component (1)
From digitizing component (2)*
Clock and sync. signals from video
input devices and external triggers
Set grabbing conditions
*On Matrox Orion /Dual only
PAL video format
Y component
U and V
components
14.75 MHz
7.38 MHz each
Pixel
Formatter
2 Mbytes
SRAM*
Capture Control
Pixel Converter
Pixel sampling rate
14.75 MHz
To G450
Interrupt generation
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