Photo-electric converter having variable accumulation time and a

Details Photo-electric converter having variable accumulation time and a Photo-electric converter having variable accumulation time and a

1992-06-19

1993-12-21

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

35821319, H01J 4014

Patent

active

052723283

ABSTRACT:
An image pickup apparatus comprises a first line sensor and a second line sensor. A first control circuit controls an accumulation time of the first line sensor based on an output signal of the first line sensor. A second control circuit controls an accumulation time of the second line sensor based on an output signal of the second line sensor. A compensating circuit compensates a level difference between a level of the output signal of the first line sensor and a level of the output signal of the second line sensor by setting a control characteristic of the first control means to be different from a control characteristic of the second control means.

REFERENCES:
patent: 4479062 (1984-10-01), Kawasaki et al.
patent: 4701626 (1987-10-01), Ishizaki et al.
patent: 4990917 (1991-02-01), Kohdaka

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