US 12,422,526 B2
Photoelectric conversion device and photoelectric conversion system
Kazuhiro Morimoto, Kanagawa (JP)
Assigned to Canon Kabushiki Kaisha, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Jun. 19, 2024, as Appl. No. 18/747,766.
Application 18/747,766 is a continuation of application No. 18/303,480, filed on Apr. 19, 2023, granted, now 12,044,802.
Application 18/303,480 is a continuation of application No. PCT/JP2021/038032, filed on Oct. 14, 2021.
Claims priority of application No. 2020-176599 (JP), filed on Oct. 21, 2020.
Prior Publication US 2024/0337731 A1, Oct. 10, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. G01S 7/481 (2006.01); G01S 7/4865 (2020.01); G01S 17/10 (2020.01); H04N 25/53 (2023.01); H04N 25/771 (2023.01); H04N 25/79 (2023.01)
CPC G01S 7/4816 (2013.01) [G01S 7/4865 (2013.01); G01S 17/10 (2013.01); H04N 25/53 (2023.01); H04N 25/771 (2023.01); H04N 25/79 (2023.01)] 19 Claims
OG exemplary drawing
 
1. A photoelectric conversion device comprising:
a photoelectric conversion unit;
a light value holding unit configured to hold light values based on signal charges generated during a first exposure period and a second exposure period having at least one of start timing and end timing different from that of the first exposure period;
a comparison unit configured to compare the light values based on the signal charges generated during the first exposure period with the light values based on the signal charges generated during the second exposure period; and
a control unit configured to set a third exposure period and a fourth exposure period having at least one of the start timing and end timing different from that of the third exposure period on a basis of a result of the comparison by the comparison unit,
wherein the light value holding unit includes a digital counter circuit configured to count a signal based on an output from the photoelectric conversion unit, and
wherein the third exposure period and the fourth exposure period are less than at least one of the first exposure period and the second exposure period.