Automatic channel gain and offset balance for video cameras empl

Details Automatic channel gain and offset balance for video cameras empl Automatic channel gain and offset balance for video cameras empl

1995-12-15

1996-10-15

Garber, Wendy

Television

Camera, system and detail

Solid-state image sensor

348243, 348251, 348311, 348572, 348673, 341139, 341154, 341156, H04N 5335, H04N 964, H04N 514, H03M 178

Patent

active

055659160

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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