US 12,379,256 B2
Readout circuits and methods
Edward Chan, San Diego, CA (US); Bing Wen, San Diego, CA (US); John Hong, San Diego, CA (US); Tallis Chang, San Diego, CA (US); and Seung-Tak Ryu, Daejeon (KR)
Assigned to Obsidian Sensors, Inc., San Diego, CA (US)
Filed by Obsidian Sensors, Inc., San Diego, CA (US)
Filed on Jan. 13, 2023, as Appl. No. 18/097,138.
Application 18/097,138 is a continuation of application No. 17/048,046, granted, now 11,555,744, issued on Jan. 17, 2023, previously published as PCT/US2019/027982, filed on Apr. 17, 2019.
Claims priority of provisional application 62/819,376, filed on Mar. 15, 2019.
Claims priority of provisional application 62/757,078, filed on Nov. 7, 2018.
Claims priority of provisional application 62/659,048, filed on Apr. 17, 2018.
Prior Publication US 2023/0236067 A1, Jul. 27, 2023
Int. Cl. G01J 5/24 (2006.01); G01J 1/42 (2006.01); G01J 1/46 (2006.01); G01J 5/02 (2022.01); H04N 23/23 (2023.01); G01J 1/44 (2006.01); G01J 5/80 (2022.01)
CPC G01J 5/24 (2013.01) [G01J 1/4228 (2013.01); G01J 1/46 (2013.01); G01J 5/024 (2013.01); H04N 23/23 (2023.01); G01J 2001/444 (2013.01); G01J 5/80 (2022.01)] 20 Claims
OG exemplary drawing
 
1. A system, comprising:
a glass substrate;
a sensor array comprising a reference sensor and an active sensor, wherein:
the sensor array is disposed on the glass substrate, and
the active sensor is configured for exposure to a sensor image; and
a readout circuit comprising a voltage driver, wherein:
the readout circuit is electrically coupled to the sensor array,
the voltage driver is configured to provide a bias voltage via an output of the voltage driver,
the output of the voltage driver is configured to electrically couple to the reference sensor,
the bias voltage is generated based on a current through the reference sensor and an impedance of the reference sensor, and
the active sensor is configured to electrically couple to the output of the voltage driver.