Image pickup device with high contrast detection capability

Details Image pickup device with high contrast detection capability Image pickup device with high contrast detection capability

2006-08-29

2006-08-29

Vu, Ngoc-Yen (Department: 2622)

Television

Camera, system and detail

Solid-state image sensor

C348S308000, C348S310000

Reexamination Certificate

active

07098951

ABSTRACT:
Each pixel includes first and second photodiodes that are receiving-light detecting elements. The first photodiode applies a first potential according to an amount of light entering into the corresponding pixel. An internal node is electrically coupled with an internal node in another pixel via a resistance component. Hence, the second photodiode applies a second potential according to an average amount of light on the periphery to the corresponding internal node. A pixel signal generating circuit reads out a multiplied result of the first and second potentials as a pixel signal. The pixel signal has an intensity corresponding to the amount of light in the pixel in accordance with a receiving-light sensitivity characteristic (signal amplification factor) that is automatically adjusted based on an average amount of light in a region on the periphery of the pixel.

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patent: 6097022 (2000-08-01), Merrill et al.
patent: 6674470 (2004-01-01), Tanaka et al.
patent: 6756576 (2004-06-01), McElroy et al.
patent: 6757018 (2004-06-01), Fowler
patent: 2003/0206234 (2003-11-01), Sakurai et al.
patent: 2000-340779 (2000-12-01), None
patent: 2000340779 (2000-12-01), None

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