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    PHOTOELECTRIC CONVERSION DEVICE, LIGHT DETECTION SYSTEM, MOVABLE BODY, AND METHOD OF CONTROLLING PHOTOELECTRIC CONVERSION DEVICE
    1.
    发明公开
    PHOTOELECTRIC CONVERSION DEVICE, LIGHT DETECTION SYSTEM, MOVABLE BODY, AND METHOD OF CONTROLLING PHOTOELECTRIC CONVERSION DEVICE 审中-公开

    公开(公告)号：US20240365024A1

    公开(公告)日：2024-10-31

    申请号：US18637151

    申请日：2024-04-16

    Applicant: CANON KABUSHIKI KAISHA

    Inventor： YOSHINOBU NAGAMASA

    IPC: H04N25/773 ,  H04N25/709 ,  H04N25/78

    CPC classification number: H04N25/773 ,  H04N25/709 ,  H04N25/78

    Abstract: A photoelectric conversion device includes a detector, a switch, a first circuit, a second circuit, a counter, and a selector. The detector generates change in voltage by current based on incident photons. The switch is between the detector and a node. The first circuit generates a first detection signal based on the change in response to the photon in the detector during a period when the switch is in the ON state. The second circuit generates a second detection signal based on the change in the detector during periods when the switch is in the ON and OFF states. The counter counts the signal to output a count value. The selector selects one of the first and second detection signals generated by the one of the first and second circuits and output a selected detection signal to the counter.

    Image sensor
    4.
    发明授权
    Image sensor 有权

    公开(公告)号：US12022221B2

    公开(公告)日：2024-06-25

    申请号：US17991097

    申请日：2022-11-21

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Changhyun Park ,  Eun Sub Shim

    IPC: H04N25/77 ,  H04N25/46 ,  H04N25/59 ,  H04N25/771 ,  H04N25/773 ,  H04N25/78

    CPC classification number: H04N25/77 ,  H04N25/771 ,  H04N25/773

    Abstract: An image sensor includes a pixel including a first floating diffusion and a second floating diffusion, generating a first pixel signal based on a quantity of charge of the first floating diffusion, and generating a second pixel signal based on the quantity of charge of the first floating diffusion and a quantity of charge of the second floating diffusion; a column line connected to the pixel and transmitting the first pixel signal or the second pixel signal; and a readout circuit connected to the column line and generating an image signal based on a plurality of comparison results including a first comparison result obtained by comparing the first pixel signal with a first reference signal, a second comparison result obtained by comparing the second pixel signal with a first reference signal, and a third comparison result obtained by comparing the second pixel signal with a second reference signal.

    Image sensor and signal conversion method
    5.
    发明授权
    Image sensor and signal conversion method 有权

    公开(公告)号：US12022219B2

    公开(公告)日：2024-06-25

    申请号：US18189154

    申请日：2023-03-23

    Applicant: SK hynix Inc.

    Inventor： Hajime Suzuki

    IPC: H04N25/75 ,  H04N25/773 ,  H04N25/778

    CPC classification number: H04N25/75 ,  H04N25/773 ,  H04N25/778

    Abstract: Provided herein may be an image sensor and a signal conversion method. A signal transducer for converting an analog pixel signal into a digital signal may include an operational amplifier configured to receive a pixel signal, a conversion gain of which is changed, through a first input terminal, receive a ramp signal through a second input terminal, and change polarities of the first input terminal and the second input terminal based on an inverse signal, and a signal manager configured to generate the inverse signal in response to a change in the conversion gain and transfer the inverse signal to the operational amplifier.

    READOUT CIRCUIT OF SINGLE PHOTON AVALANCHE FOCAL PLANE
    6.
    发明公开
    READOUT CIRCUIT OF SINGLE PHOTON AVALANCHE FOCAL PLANE 审中-公开

    公开(公告)号：US20240179437A1

    公开(公告)日：2024-05-30

    申请号：US18353890

    申请日：2023-07-18

    Applicant: CHINA ELECTRONICS TECHNOLOGY GROUP CORPORATION NO 44 RESEARCH INSTITUTE

    Inventor： SHUIQING XI ,  RUOYAO GAO ,  DAJIAN CUI ,  JUNXIANG YUAN

    IPC: H04N25/78 ,  H04N23/667 ,  H04N25/773

    CPC classification number: H04N25/78 ,  H04N23/667 ,  H04N25/773

    Abstract: A readout circuit of a single photon avalanche focal plane includes a pixel array circuit, a serial bus circuit, a clock and timing control circuit, a working mode control circuit, a clock generation circuit, temperature sensing circuits, data processing and storage circuits, I/O driving circuits, and a uniformity correction circuit. The pixel array circuit includes pixel unit circuits arranged in an array. The uniformity correction circuit is configured to improve imaging uniformity by performing regional offset adjustment on the pixel array circuit. By adjusting pixels in abnormal areas or a global bias voltage through uniformity correction, a scale of an array of the pixel array circuit is improved, and an SPAD array chip is protected from strong light, so that the readout circuit well meets application scenarios with complex environmental information, high spatial resolution ratio and high imaging frame rate.

    PHOTOELECTRIC CONVERSION DEVICE AND OPTICAL DETECTION SYSTEM
    9.
    发明公开
    PHOTOELECTRIC CONVERSION DEVICE AND OPTICAL DETECTION SYSTEM 审中-公开

    公开(公告)号：US20240357259A1

    公开(公告)日：2024-10-24

    申请号：US18761033

    申请日：2024-07-01

    Applicant: CANON KABUSHIKI KAISHA

    Inventor： YU MAEHASHI

    IPC: H04N25/773 ,  H01L27/146 ,  H04N25/705 ,  H04N25/709 ,  H04N25/76 ,  H04N25/766 ,  H04N25/79

    CPC classification number: H04N25/773 ,  H01L27/14616 ,  H04N25/705 ,  H04N25/709 ,  H04N25/766 ,  H04N25/7795 ,  H04N25/79

    Abstract: A photoelectric conversion device includes a plurality of pixels each including a photoelectric conversion unit configured to output a signal based on incidence of a photon, the photoelectric conversion unit including an avalanche photodiode configured to multiply a charge resulting from the incidence of the photon by avalanche multiplication, a processing circuit configured to process the signal output from the photoelectric conversion unit, and a pixel output circuit configured to control output of a signal processed by the processing circuit; a data line connected to the plurality of pixels; and a reception circuit configured to receive a pixel signal output from the plurality of pixels via the data line. An off-leakage current of a transistor constituting the reception circuit is lower than that of a transistor constituting the pixel output circuit.

    SOLID-STATE IMAGING DEVICE AND METHOD FOR OPERATING A SOLID-STATE IMAGING DEVICE
    10.
    发明公开
    SOLID-STATE IMAGING DEVICE AND METHOD FOR OPERATING A SOLID-STATE IMAGING DEVICE 审中-公开

    公开(公告)号：US20240323552A1

    公开(公告)日：2024-09-26

    申请号：US18577704

    申请日：2022-07-21

    Applicant: Sony Semiconductor Solutions Corporation

    Inventor： Diederik Paul MOEYS

    IPC: H04N25/47 ,  H04N25/773 ,  H04N25/79

    CPC classification number: H04N25/47 ,  H04N25/773 ,  H04N25/79

    Abstract: A solid state imaging device comprises a pixel array comprising a plurality of imaging pixels, each of which being capable to detect as a positive polarity event a rise of intensity of light falling on the imaging pixel which rise is larger than a respective first predetermined threshold or as a negative polarity event a fall of the intensity which fall is larger than a respective second predetermined threshold, and a control unit that is configured to receive a time series of the events of both polarities detected in the pixel array, to deduce from the time series of events information on the absolute light intensity received from objects whose movements caused the events, and to reconstruct a time series of images of the objects.

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