发明名称 |
Wide dynamic range image sensor utilizing switch current source at pre-determined switch voltage per pixel |
摘要 |
Disclosed are embodiments of a pixel imaging circuit that incorporates a standard photodiode. However, the imaging circuit is modified with a feedback loop to provide a first photo response over a first portion of the light sensing range (e.g., at higher light intensity range) and a second reduced-sensitivity photo response over a second portion of the light sensing range (i.e., at a lower light intensity range), thereby extending the circuits dynamic range of coverage. Also disclosed are embodiments of an associated imaging method and a design structure that is embodied in a machine readable medium and used in the imaging circuit design process.
|
申请公布号 |
US8130298(B2) |
申请公布日期 |
2012.03.06 |
申请号 |
US20080027283 |
申请日期 |
2008.02.07 |
申请人 |
CORSON PHILLIP L.;ERTURK METE;HALL EZRA D. B.;NIEKREWICZ PAUL A.;INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
CORSON PHILLIP L.;ERTURK METE;HALL EZRA D. B.;NIEKREWICZ PAUL A. |
分类号 |
H04N3/14;H04N5/335;H04N5/355;H04N5/3745 |
主分类号 |
H04N3/14 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|