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RGB input
Video decoder
A multi-standard video decoder is used to convert analog NTSC
or PAL video signals in composite (CVBS) or S-Video (Y/C)
format to digitized component video. The decoder supports both
the RGB 8:8:8 and YUV16 output formats.
Sampling Rates for NTSC/PAL Standards
Video format Square Pixels
NTSC
12.27 MHz
(640x480)
PAL
14.75 MHz
(768x576)
The video decoder also features an automatic gain control
(AGC). However, you can disable this feature (MIL-Lite
MdigControl() with
) and adjust the gain manually (MdigControl() with
M_DISABLE
M_GRAB_INPUT_GAIN
programmable gamma correction table.
RGB digitization section
The RGB digitization section includes circuitry to select,
amplify, and filter the video signal prior to sending it to the
three independent analog-to-digital converters (A/D
converters).
The RGB digitization section can accept input from one RGB
camera. The synchronization signal can be on any component
of the RGB input or can be received on the external sync
channel (VID_IN4).
The RGB digitization section can accept simultaneous input
from three genlocked monochrome cameras. The inputs are
stored in separate color bands of the same buffer; the buffer can
be in planar format. A single two-channel monochrome camera
(dual tap) can also be connected.
The MIL-Lite MdigChannel() command can be used to switch
between channels.
CCIR-601
13.5 MHz
(720x480)
13.5 MHz
(720x576)
M_GRAB_AUTOMATIC_INPUT_GAIN
). The decoder also includes a
Acquisition section
set to
51
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Troubleshooting
