公开(公告)号：US20240381000A1

公开(公告)日：2024-11-14

申请号：US18657503

申请日：2024-05-07

Applicant: CANON KABUSHIKI KAISHA

Inventor： SATORU MIKAJIRI

IPC: H04N25/773

Abstract: A photoelectric convertor is provided. The convertor includes first and second pixels each including an avalanche photodiode and a counter, and a processor. The first and second pixels repeat a detection operation including exposure intervals in which the counter counts a number of times that an avalanche breakdown occurred in the photodiode and holding intervals in which a count value counted in the exposure interval is held in the counter. After a predetermined time has elapsed from the start of a first exposure interval of the first pixel, a second exposure interval of the second pixel is started. The processor outputs a difference value between a first count value counted in the first exposure interval and held in the counter in a first holding interval that continues from the first exposure interval and a second count value counted in the second exposure interval.

公开(公告)号：US20240263996A1

公开(公告)日：2024-08-08

申请号：US18425067

申请日：2024-01-29

Applicant: CANON KABUSHIKI KAISHA

Inventor： SATORU MIKAJIRI

IPC: G01J1/44 ,  H03K5/02 ,  H03K17/56

CPC classification number: G01J1/44 ,  H03K5/02 ,  H03K17/56

Abstract: Output circuit includes differential circuit arranged between first and second power supply lines, and switch and resistor connected in series between the first and second power supply lines. The differential circuit includes first differential output circuit including first positive-side output terminal and first negative-side output terminal, second differential output circuit including second positive-side output terminal and second negative-side output terminal, first output line connecting the first positive-side output terminal and the second positive-side output terminal, and second output line connecting the first negative-side output terminal and the second negative-side output terminal, amplitude modulated signal is output by the first and second output lines. The switch and the resistor suppress change in current flowing between the first and second power supply lines. The output circuit further includes disconnector to disconnect the second differential output circuit from the first differential output circuit.

公开(公告)号：US20240381004A1

公开(公告)日：2024-11-14

申请号：US18656467

申请日：2024-05-06

Applicant: CANON KABUSHIKI KAISHA

Inventor： SATORU MIKAJIRI

IPC: H04N25/78 ,  H04N25/76 ,  H04N25/773

Abstract: An apparatus includes a light detector including a photon detection element, a counter configured to count an output of the light detector, a generator configured to reset the counter and generate a flag signal in accordance with a count value of the counter reaching a predetermined value, and a readout circuit configured to process the flag signal. The readout circuit detects occurrence of an event based on a time interval of the flag signal.

公开(公告)号：US20230217137A1

公开(公告)日：2023-07-06

申请号：US18145577

申请日：2022-12-22

Applicant: CANON KABUSHIKI KAISHA

Inventor： SATORU MIKAJIRI ,  ATSUSHI FURUBAYASHI ,  MAYU ISHIKAWA ,  HIROSHI YOSHIOKA

IPC: H04N25/773 ,  H01L31/107 ,  H01L31/02 ,  H01L27/146

CPC classification number: H04N25/773 ,  H01L31/107 ,  H01L31/02027 ,  H01L27/14649

Abstract: A photoelectric conversion device includes a pixel, the pixel including an avalanche photodiode, and a signal processing circuit including a counter configured to generate a count value based on a photon incident on the avalanche photodiode during a count period, the signal processing circuit being configured to output the count value for each count period repeatedly. The pixel transitions from a first state to a second state in which a length of the count period is shorter than that in the first state in accordance with a result of determination based on the count value and a predetermined threshold value.