发明名称 |
PIXEL CIRCUIT WITH CONTROLLED CAPACITOR DISCHARGE TIME OF FLIGHT MEASUREMENT |
摘要 |
A pixel circuit includes a single photon avalanche diode (SPAD) and a measurement circuit including a capacitance. The SPAD detects an incident photon and the measurement circuit discharges the capacitance at a known rate during a discharge time period. The length of the discharge time period is determined by the time of detection of the photon, such that the final amount of charge on the capacitance corresponds to the time of flight of the photon. The pixel circuit may be included in a time resolved imaging apparatus. A method of measuring the time of flight of a photon includes responding to an incident photon detection by discharging a capacitance at a known rate and correlating final capacitance charge to time of flight. |
申请公布号 |
US2014124652(A1) |
申请公布日期 |
2014.05.08 |
申请号 |
US201314066771 |
申请日期 |
2013.10.30 |
申请人 |
THE UNIVERSITY COURT OF THE UNIVERSITY OF EDINBURGH;STMICROELECTRONICS (RESEARCH & DEVELOPMENT) LIMITED |
发明人 |
DUTTON NEALE;HENDERSON ROBERT K. |
分类号 |
H01L31/107;H01L27/146 |
主分类号 |
H01L31/107 |
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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