Imaging device for digital camera having photodiodes...

Details Imaging device for digital camera having photodiodes... Imaging device for digital camera having photodiodes...

2006-07-04

2006-07-04

Vu, Ngoc-Yen (Department: 2612)

Television

Camera, system and detail

Solid-state image sensor

C348S312000, C348S371000, C257S435000

Reexamination Certificate

active

07071984

ABSTRACT:
An imaging device includes photoelectric converting portions for converting light from a subject into signal charge pixel by pixel and transfer portions for transferring the signal charge generated by photometric conversion. Photometric photodiodes are disposed over light-shielding membranes covering the transfer portions. Photometric photodiodes are so disposed as to be distributed over an imaging surface of the imaging device. Each photometric area includes at least one photometric photodiode. When a flashlight is emitted, photocurrent output from each photometric photodiode is gathered separately with respect to each photometric area and amplified. The photocurrent of each photometric area is amplified with a gain corresponding to the photometric area, and then added up. Added photocurrent is integrated, and when a result of the integration reaches a predetermined level an emission stop signal of the flashlight is generated.

REFERENCES:
patent: 4266163 (1981-05-01), Lloyd
patent: 4531078 (1985-07-01), Canter et al.
patent: 4809076 (1989-02-01), Todaka et al.
patent: 5452001 (1995-09-01), Hosier et al.
patent: 5539196 (1996-07-01), Miyawaki et al.
patent: 6118115 (2000-09-01), Kozuka et al.
patent: 2001/0003466 (2001-06-01), Kubo

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