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    Time-resolving sensor for range measurement and 2D greyscale imaging
    1.
    发明授权
    Time-resolving sensor for range measurement and 2D greyscale imaging 有权

    公开(公告)号：US11348954B2

    公开(公告)日：2022-05-31

    申请号：US16409767

    申请日：2019-05-10

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Yibing Michelle Wang ,  Lilong Shi ,  Kwang Oh Kim ,  Chunji Wang

    IPC: H01L27/146 ,  G01S17/10 ,  G01S17/894 ,  G01S7/4863 ,  G01S7/4865

    Abstract: A pixel of an image sensor includes a pinned photodiode (PPD), a switching device and an output circuit. A first terminal of the switching device is coupled to the PPD. A second terminal of the switching device is coupled to a floating diffusion (FD). A third terminal of the switching device is coupled to a first enable signal and a second enable signal. The switching device is responsive to the first enable signal to transfer a first charge on the PPD to the FD, and responsive to the second enable signal to transfer a second charge on the PPD to the FD. The output circuit outputs a first voltage based on the first charge and outputs a second voltage based on the second charge in which the first voltage corresponds to a time of flight of one or more detected photons and the second voltage corresponds to a greyscale image.

    LOW POWER LiDAR SYSTEM WITH SMART LASER INTERROGRATION
    3.
    发明申请
    LOW POWER LiDAR SYSTEM WITH SMART LASER INTERROGRATION 有权

    公开(公告)号：US20220308189A1

    公开(公告)日：2022-09-29

    申请号：US17393394

    申请日：2021-08-03

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Yibing Michelle WANG ,  Chunji Wang ,  Kwang Oh KIM ,  Hongyu WANG

    IPC: G01S7/4865 ,  G04F10/00 ,  G01S17/10 ,  G01S7/4914

    Abstract: A direct time-of-flight (DTOF) LiDAR system includes a sensor array, a first gated time-to digital converter (TDC) circuit and second TDC circuit. The sensor array includes pixels arranged to detect a first disparity location on the sensor array of a reflection signal received from a first object at a first range with respect to a second disparity location on the sensor array of a reflection signal received from a second object at a second range that is greater than the first range. The first TDC circuit generates first timestamp information relating to detection of the first reflection signal in which the first gated TDC circuit is gated based on the first disparity location. The second gated TDC circuit generates second timestamp information relating to detection of the second reflection signal in which the second gated TDC circuit is gated based on the second disparity location.

    LiDAR adaptive single-pass histogramming for low power LiDAR system
    4.
    发明授权
    LiDAR adaptive single-pass histogramming for low power LiDAR system 有权

    公开(公告)号：US12105224B2

    公开(公告)日：2024-10-01

    申请号：US17865126

    申请日：2022-07-14

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Yibing Michelle Wang ,  Chunji Wang

    IPC: G01S7/4865 ,  G01S17/10

    CPC classification number: G01S7/4865 ,  G01S17/10

    Abstract: Disclosed is a single pass light detection and ranging (LiDAR) laser method, including building a coarse histogram, detecting a first peak of laser pulses in the coarse histogram, determining whether the first peak height is greater than a first threshold and a location of the first peak is less than or equal to a second threshold, when determining that the first peak height is greater than the first threshold and the location of the first peak is less than or equal to the second threshold, building a fine histogram, and detecting a peak of laser pulses in the fine histogram, and when determining that the first peak height is less than or equal to the first threshold and the location of the first peak is greater than the second threshold, continuing the building of the coarse histogram, and detecting a second peak of the laser pulses in the coarse histogram.

    System and method for histogram binning for depth detection
    5.
    发明授权
    System and method for histogram binning for depth detection 有权

    公开(公告)号：US12032065B2

    公开(公告)日：2024-07-09

    申请号：US16940237

    申请日：2020-07-27

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Chunji Wang ,  Yibing Michelle Wang

    IPC: G01S17/89 ,  G01S7/481 ,  G01S7/4863 ,  G01S7/4865 ,  G01S17/10 ,  G01S17/42

    CPC classification number: G01S17/89 ,  G01S7/4816 ,  G01S7/4863 ,  G01S7/4865 ,  G01S17/10 ,  G01S17/42

    Abstract: Provided is a depth detection system and method of histogram binning for depth detection. The depth detection system includes a light source configured to emit a light pulse toward an object, an optical sensor configured to detect the light pulse reflecting off the object, the optical sensor including a first sensing pixel configured to detect the light pulse for a first event count according to the light pulse reflecting off the object, and a second sensing pixel configured to detect the light pulse for a second event count according to the light pulse reflecting off the object, and a processing circuit configured to determine a first aggregated histogram corresponding to the first sensing pixel based on the first event count and the second event count and determine a first peak of the first aggregated histogram to determine a first time of flight associated with the first sensing pixel.

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