公开(公告)号：EP4277263A1

公开(公告)日：2023-11-15

申请号：EP22736744.8

申请日：2022-01-05

申请人： CANON KABUSHIKI KAISHA

发明人： OTA, Yasuharu ,  MORIMOTO, Kazuhiro

IPC分类号： H04N5/341 ,  H04N5/3745

摘要： A photoelectric conversion apparatus includes an avalanche photodiode including an anode and a cathode, a switch that is connected to one node of the anode and the cathode, and a power line to which a drive voltage is to be applied, and configured to switch a resistance value between the one node and the power line, and a signal generation unit configured to generate a pulse signal for controlling switching of the switch, wherein a value obtained by dividing the number of the pulse signals in a first exposure period by the first exposure period, and a value obtained by dividing the number of the pulse signals in a second exposure period having a length different from a length of the first exposure period, by the second exposure period are different.

公开(公告)号：EP3657775A1

公开(公告)日：2020-05-27

申请号：EP19207569.5

申请日：2019-11-07

申请人： CANON KABUSHIKI KAISHA

发明人： OTA, Yasuharu ,  KURODA, Yukihiro

IPC分类号： H04N5/359 ,  H04N5/3745

摘要： A photoelectric conversion device includes an avalanche multiplying photodiode, a signal generation unit that includes a control unit configured to control an applied voltage to the photodiode and generates a photon detection pulse based on an output generated by incidence of a photon to the photodiode, and a counter that counts the photon detection pulse output from the signal generation unit, and the counter outputs a setting value detection signal when a count value of the photon detection pulse reaches a predetermined setting value, and in response to receiving the setting value detection signal, the control unit controls the applied voltage to the photodiode so as to stop generation of an avalanche current in the photodiode.