Method of automatic exposure control in a MOS imaging array

Details Method of automatic exposure control in a MOS imaging array Method of automatic exposure control in a MOS imaging array

1996-11-15

1998-03-31

Faile, Andrew

Television

Camera, system and detail

Solid-state image sensor

348362, H04N 9083

Patent

active

057344264

ABSTRACT:
In a MOS imaging array, it is important to control the exposure time of the array to incident light. For varying changes in ambient light, the exposure time of the array must be changed. The present invention describes a method for controlling the exposure time of the imaging array. Each of the intensities of the pixels in a frame are analyzed to provide an indication of the number of pixels having an intensity above and below predetermined thresholds, NW and NB, respectively. If NW is above a predetermined threshold, KW, then an adjustment in the exposure time may be made. If not, then no adjustment is made.

REFERENCES:
patent: 5036400 (1991-07-01), Haruki
patent: 5128769 (1992-07-01), Arai et al.
patent: 5264940 (1993-11-01), Komiya et al.
patent: 5299015 (1994-03-01), Imaide et al.
patent: 5329372 (1994-07-01), Nakamura
patent: 5585942 (1996-12-01), Kondo
patent: 5638118 (1997-06-01), Takahashi et al.

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