Image sensor having clamp circuit

Television – Camera – system and detail – Combined image signal generator and general image signal...

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C348S257000, C348S308000

Reexamination Certificate

active

07394491

ABSTRACT:
An image sensor of the present invention prevents the phenomenon that surrounding background of a bright object reflecting or emitting strong light like the sun is presented at dark and improves image quality of the image sensor by controlling the brightness of the bright object. The image sensor using correlated double sampling technology which outputs data of an object by using difference between a reset voltage signal and a data voltage signal of a unit pixel includes a plurality of unit pixels arranged in a matrix, each outputting the reset voltage signal and the data voltage signal; a plurality of clamping means, each coupled to each unit pixels for clamping up the reset signal to a predetermined voltage level; and a voltage controlling block for adjusting voltage level supplied to a gate of each of clamping means.

REFERENCES:
patent: 5659355 (1997-08-01), Barron et al.
patent: 5708482 (1998-01-01), Takahashi et al.
patent: 5717457 (1998-02-01), Morimoto
patent: 5881184 (1999-03-01), Guidash
patent: 5900623 (1999-05-01), Tsang et al.
patent: 6031891 (2000-02-01), Roos et al.
patent: 6040570 (2000-03-01), Levine et al.
patent: 6396505 (2002-05-01), Lui et al.
patent: 6441852 (2002-08-01), Levine et al.
patent: 6587143 (2003-07-01), Boisvert
patent: 6670904 (2003-12-01), Yakovlev
patent: 7196726 (2007-03-01), Kokubun et al.
patent: 2001/0028392 (2001-10-01), Yamamoto et al.
patent: 2002/0001038 (2002-01-01), Lee
patent: 2003/0002093 (2003-01-01), Hynecek
patent: 2003/0020818 (2003-01-01), Johnson
patent: 2003/0133627 (2003-07-01), Brehmer et al.
patent: 2003/0146993 (2003-08-01), Kokubun et al.
patent: 05-183913 (1993-07-01), None
patent: 11-2200662 (1999-08-01), None
patent: 2000-050167 (2000-02-01), None
patent: 2000-270267 (2000-09-01), None
patent: 2000-287135 (2000-10-01), None
patent: 2001-036690 (2001-02-01), None
patent: 2002-044524 (2002-02-01), None
patent: 2002-232741 (2002-08-01), None
patent: 2002-300477 (2002-10-01), None

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Image sensor having clamp circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Image sensor having clamp circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image sensor having clamp circuit will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2777060

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.