CMOS image sensor for high speed signal processing

Details CMOS image sensor for high speed signal processing CMOS image sensor for high speed signal processing

2005-04-25

2011-10-25

Henn, Timothy J (Department: 2622)

Television

Camera, system and detail

Solid-state image sensor

C348S241000, C348S245000

Reexamination Certificate

active

08045029

ABSTRACT:
A CMOS image sensor includes: a plurality of CDS/PGAs (correlating double sampling/programmable gain amplifiers) for processing output signals of pixels corresponding to same colors on different paths; and an offset difference removing part for removing offset difference that occurs when the same color signals are processed on the different paths, wherein the offset difference removing part includes: a dummy pixel array where light is shielded; a unit for reading signals of the dummy pixel array through the CDS/PGAs and storing average offset values for each path; and a signal synthesizing unit for synthesizing the average offset values and signals of an effective pixel array, which are read through the respective CDS/PGAs, and outputting signals of which offset difference is removed.

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Japanese Office Action for Japanese Patent Application No. 2005-128752, dated Jul. 9, 2010 (and English translation).

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