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VIDEO DIGITIZER FOR IBM COMPATIBLE PC
This is a real time video digitizer card intended to use with IBM( compatible
personal computers (PC) with VGA or higher display. The card can be plugged into
any expansion slot within the computer. The digitizer converts video signals
supplied by a TV set, a camcorder, a video recorder, or a video camera into a digital
data that can be processed by the PC.
The card can capture frames from live Composite video signal with 256 gray levels
and 24 bit full color pictures from still RGB signals. The card digitizes both odd and
even fields of the incoming signal and the interlacing is made by the program. The
output file format is TIFF (Tagged Image File Format). The output files can be
processed further by almost any graphics program that runs under MS-DOS or
Windows.
High quality pictures are achieved by using rather high (10 MHz) sampling rate
and using a phase locked loop to synchronizes the sampling frequency to the line
frequency of the incoming video signal. Direct line synchronization is also
possible and must be used if the line frequency of the incoming signal is not stable
(for instance the video signal is played back from the VCR). To eliminate
interference patterns caused by the 4.43 MHz color subcarrier the card contains
circuitry to filter out the color subcarrier from video signal.
TECHNICAL DATA
System requirements:
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PC 286 or higher
♦
VGA video card or higher
♦
Free XT slot
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Windows 3.1 or higher
Black and white:
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Resolution: 512 x 512 pixels
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Gray levels: 256
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Sampling rate: 10 MHz
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Input signal: Composite PAL video (15625Hz line frequency)
♦
Video input level: 1Vpp
♦
Output file format : TIFF (8 bits)
Color:
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Resolution: 512 x 512 pixels
♦
Color input signal: RGB (1Vpp)
♦
Number of colors: 16.7 Million
♦
Color output file: TIFF (24 bits)
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