发明名称 |
METHODS AND DEVICES FOR CHARGE MANAGEMENT FOR THREE-DIMENSIONAL AND COLOR SENSING |
摘要 |
A method of improving detection performance in a system that illuminates a target with optical energy having a modulated periodic waveform that includes a high frequency component and that detects with at least one semiconductor photodetector a fraction of said optical energy reflected by said target. The method comprises providing each said semiconductor photodetector with a first group and a second group of spaced-apart elongated structures formed on a substrate, wherein a distance in an x-direction separating adjacent said structures is substantially less than a length in a y-direction of said structures. The method further comprises dynamically biasing said semiconductor photodetector such that detection-generated charge within said substrate is moved at a first rate in said x-direction for local collection by at least at a first region of said elongated structures, and at least some of said detection-generated charge at said first region is moved at a second rate in said y-direction for collection at a second region of said elongated structures. Performance of said semiconductor photodetector is substantially dependent on said first rate and is substantially independent of said second rate. Also, a CMOS-implementable semiconductor photodetector for use in a system for carrying out the method.
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申请公布号 |
EP1644700(A2) |
申请公布日期 |
2006.04.12 |
申请号 |
EP20040755660 |
申请日期 |
2004.06.17 |
申请人 |
CANESTA, INC. |
发明人 |
BAMJI, CYRUS;LIU, XINQIAO |
分类号 |
G01B11/26;A61B6/00;A61N5/00;G01C3/00;G01J9/00;G01N23/00;G01S7/08;G01S7/491;G01S7/493;G01S17/08;G01S17/36;G01S17/89;G21G5/00;G21K1/12;H01L;H01L27/146;H01L31/02;H04N3/14;H05G1/60;(IPC1-7):G01B11/26 |
主分类号 |
G01B11/26 |
代理机构 |
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地址 |
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