Image sensing device for an electronic still camera

Details Image sensing device for an electronic still camera Image sensing device for an electronic still camera

1987-12-28

1989-08-22

Chin, Tommy P.

Facsimile and static presentation processing

Facsimile

Recording apparatus

35821313, 35821319, 358225, 358909, H04N 5238

Patent

active

048601080

ABSTRACT:
An electronic still camera is designed to be operable for flash photography in collaboration with an electronic flash unit. This camera has an image pickup element for photoelectrically converting an image of an object to be photographed formed by a taking lens. The output of the image pickup element is subjected to gain control in a gain control circuit, after which it is converted into a signal suited for storing in a storing section. Further, this camera has a stop signal generating medium for stopping the flashing of the electronic flash unit when the integrated value of the light reflected from the object to be photographed reaches a predetermined value, a photoelectric conversion element for performing receipt and integration of light which has passed through the taking lens during the charge accumulation period of the image pickup element, and a gain determining circuit for determining the gain of the gain control circuit. And, determination of the gain is performed according to the difference between the output value of the photoelectric conversion element at the time of completion of charge accumulation of the image pickup element and a predetermined value.

REFERENCES:
patent: 4635123 (1987-01-01), Masunaga
patent: 4647975 (1987-03-01), Alston
patent: 4677489 (1987-06-01), Nishimura
patent: 4689689 (1987-08-01), Saito et al.

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