发明名称 |
CMOS image sensor for high speed signal processing |
摘要 |
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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申请公布号 |
US2005253947(A1) |
申请公布日期 |
2005.11.17 |
申请号 |
US20050114386 |
申请日期 |
2005.04.25 |
申请人 |
KIM NAM-RYEOL;KIM SONG-YI;BAE CHANG-MIN;OH HACK-SOO |
发明人 |
KIM NAM-RYEOL;KIM SONG-YI;BAE CHANG-MIN;OH HACK-SOO |
分类号 |
H01L27/146;H01L27/14;H04N5/335;H04N5/361;H04N5/374;H04N5/378;H04N9/04;H04N9/07;(IPC1-7):H04N5/217 |
主分类号 |
H01L27/146 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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