公开(公告)号：US20210102844A1

公开(公告)日：2021-04-08

申请号：US17048046

申请日：2019-04-17

Applicant: Obsidian Sensors, Inc.

Inventor： Edward CHAN ,  Bing WEN ,  John HONG ,  Tallis CHANG ,  Seung-Tak RYU

IPC: G01J5/24 ,  G01J5/02 ,  G01J1/42 ,  H04N5/33 ,  G01J1/46

Abstract: Methods of sensor readout and calibration and circuits for performing the methods are disclosed. In some embodiments, the methods include driving an active sensor at a voltage. In some embodiments, the methods include use of a calibration sensor, and the circuits include the calibration sensor. In some embodiments, the methods include use of a calibration current source and circuits include the calibration current source. In some embodiments, a sensor circuit includes a Sigma-Delta ADC. In some embodiments, a column of sensors is readout using first and second readout circuits during a same row time.

公开(公告)号：US20230236067A1

公开(公告)日：2023-07-27

申请号：US18097138

申请日：2023-01-13

Applicant: Obsidian Sensors, Inc.

Inventor： Edward CHAN ,  Bing WEN ,  John HONG ,  Tallis CHANG ,  Seung-Tak RYU

IPC: G01J5/24 ,  G01J1/42 ,  G01J1/46 ,  G01J5/02 ,  H04N5/33

CPC classification number: G01J5/24 ,  G01J1/4228 ,  G01J1/46 ,  G01J5/024 ,  H04N5/33 ,  G01J2001/444

Abstract: Methods of sensor readout and calibration and circuits for performing the methods are disclosed. In some embodiments, the methods include driving an active sensor at a voltage. In some embodiments, the methods include use of a calibration sensor, and the circuits include the calibration sensor. In some embodiments, the methods include use of a calibration current source and circuits include the calibration current source. In some embodiments, a sensor circuit includes a Sigma-Delta ADC. In some embodiments, a column of sensors is readout using first and second readout circuits during a same row time.