Solid state image sensor with fixed pattern noise reduction

Details Solid state image sensor with fixed pattern noise reduction Solid state image sensor with fixed pattern noise reduction

2003-07-25

2009-12-22

Tran, Nhan T (Department: 2622)

Television

Camera, system and detail

Solid-state image sensor

C348S241000

Reexamination Certificate

active

07636118

ABSTRACT:
A solid-state image sensor comprises unit pixels each having a photoelectric conversion element for converting incident light into electric signal charge and then storing the signal charge obtained through such photoelectric conversion, an amplifying element for converting into an electric signal the signal charge stored in the photoelectric conversion element, and a select switch for selectively outputting the pixel signal from the amplifying element to a signal line. The image sensor further comprises a reset circuit in each of the unit pixels for resetting the photoelectric conversion element every time a pixel signal is outputted from the relevant unit pixel. The photoelectric conversion element is reset every time a pixel signal is outputted, so that a pre-reset signal and a post-reset signal are delivered from each unit pixel and then are transferred via a common path, and the difference between such signals is taken to suppress not only the fixed pattern noise derived from characteristic deviation in each unit pixel but also vertically correlated fixed pattern noises of vertical streaks.

REFERENCES:
patent: 4809075 (1989-02-01), Akimoto et al.
patent: 4942474 (1990-07-01), Akimoto et al.
patent: 5122881 (1992-06-01), Nishizawa et al.
patent: 5434619 (1995-07-01), Yonemoto
patent: 5698844 (1997-12-01), Shinohara et al.
patent: 6037577 (2000-03-01), Tanaka et al.
patent: 6469740 (2002-10-01), Kuroda et al.
patent: 6801253 (2004-10-01), Yonemoto et al.
patent: 0617552 (1994-09-01), None
patent: 0757475 (1997-05-01), None
patent: 01-117485 (1989-05-01), None
patent: 02-171088 (1990-07-01), None
patent: 04-000880 (1992-01-01), None
patent: 04-241586 (1992-08-01), None
patent: 07-284024 (1995-10-01), None
patent: 11-112018 (1999-04-01), None
patent: 11-122532 (1999-04-01), None
Japanese Patent Office Action corresponding to JP Serial No. 10-022867 dated Sep. 25, 2007.

Affiliated with

Also associated with

Rating

Solid state image sensor with fixed pattern noise reduction does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Solid state image sensor with fixed pattern noise reduction, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Solid state image sensor with fixed pattern noise reduction will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4114752