Image scanning system with signal integration time control

Details Image scanning system with signal integration time control Image scanning system with signal integration time control

1982-07-16

1985-06-11

Westin, Edward P.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250201, 354402, G03B 310, H01J 4014

Patent

active

045231010

ABSTRACT:
Disclosed is an image scanning system including signal integration type image sensor, measuring device for measuring a light substantially equivalent to a light incident on the sensor, and a controller for controlling the signal integration time of the sensor on the basis of the output of the sensor and the output of the measuring device, the controller determining an initial signal integration time on the basis of the output of the measuring device and thereafter stepwise controlling the signal integration time on the basis of the output of the sensor with the initial integration time as the starting point.

REFERENCES:
patent: 3944816 (1976-03-01), Harada
patent: 4004852 (1977-01-01), Pentecost
patent: 4180309 (1979-12-01), Miyata et al.
patent: 4283137 (1981-08-01), Tsunekawa et al.
patent: 4305657 (1981-12-01), Masunaga et al.
patent: 4329033 (1982-05-01), Masunaga et al.
patent: 4411504 (1983-10-01), Kinoshita et al.
patent: 4411505 (1983-10-01), Sakai et al.
patent: 4437743 (1984-03-01), Sakai et al.
patent: 4459002 (1984-07-01), Sakai et al.

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