Automatic channel gain and offset balance for video cameras employing multi-channel sensors
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United States of America Patent
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Oct 15, 1996
Issued Date -
N/A
app pub date -
Dec 15, 1995
filing date -
Dec 23, 1992
priority date (Note) -
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Abstract
A high frame rate camera includes; a multi-channel sensor array for producing a plurality of parallel analog image signals representative of a sensed image; a plurality of analog-to-digital converters (ADC) for converting each of the parallel analog image signals to parallel digital image signals, wherein each of the ADCs has a fine gain parameter which is a function of a top ladder potential and also has a fine offset parameter which is a function of a bottom ladder potential; and a control for controlling the fine gain and offset parameters of each of the ADCs by means of fine gain and offset control signals which are a function of desired average output black and gray levels of the image signal.
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