公开(公告)号：US12287404B2

公开(公告)日：2025-04-29

申请号：US17720837

申请日：2022-04-14

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Min Sun Keel ,  Gal Bitan ,  Amit Eisenberg

IPC: G01S17/36 ,  G01C3/08 ,  G01S7/491 ,  G01S17/894 ,  H04N25/00

Abstract: A time of flight (ToF) sensor includes: a first pixel including a first photogate to receive light reflected by an object and generate a first phase signal, and a second photogate to generate a second phase signal having a phase difference of 180 degrees with respect to the first phase signal; a second pixel including a third photogate to receive the reflected light and generate a third phase signal different from the first phase signal and a fourth photogate to generate a fourth phase signal having a phase difference of 180 degrees with respect to the third phase signal; a first signal output unit to output the first and second phase signals; and a second signal output unit to output the third and fourth phase signals, wherein the first, second, third and fourth photogates output the first to fourth phase signals during a frame period.

公开(公告)号：US12080008B2

公开(公告)日：2024-09-03

申请号：US18322803

申请日：2023-05-24

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Gal Bitan ,  Roy Yam ,  Gershi Koltun

IPC: G06T7/50 ,  G01S17/10 ,  G01S17/89 ,  G06T7/521 ,  G06V40/16 ,  H04N23/56

CPC classification number: G06T7/521 ,  G01S17/10 ,  G01S17/89 ,  G06V40/161 ,  H04N23/56 ,  G06T2207/10028 ,  G06T2207/10048 ,  G06T2207/10152 ,  G06T2207/20104 ,  G06T2207/30201

Abstract: In a method for time-of-flight (ToF) based measurement, a scene is illuminated using a ToF light source modulated at a first modulation frequency FMOD(1). While the light is modulated using FMOD(1), depths are measured to respective surface points within the scene, where the surface points are represented by a plurality of respective pixels. At least one statistical distribution parameter is computed for the depths. A second modulation frequency FMOD(2) higher than FMOD(1) is determined based on the at least one statistical distribution parameter. The depths are then re-measured using FMOD(2) to achieve a higher depth accuracy.

公开(公告)号：US11044417B2

公开(公告)日：2021-06-22

申请号：US16822331

申请日：2020-03-18

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Gal Bitan ,  Shay Hamami

IPC: H04N9/73 ,  H04N5/235 ,  H01L27/146 ,  H04N5/376 ,  H04N5/232 ,  H04N5/353 ,  H04N5/355 ,  H04N5/3745

Abstract: An HDR image sensor supporting LED Flicker Mitigation to reduce Motion Blur and a method of operating same are provided. A timing controller circuit generates at least one control signal that controls an operation of the image sensor. A split-photodiode (PD) pixel includes at least two or more photodiodes that may be independently exposed to one or more bursts of light from a light source. A first photodiode of the two or more photodiodes has a first exposure period that is longer in duration than a second exposure period of a second photodiode of the two or more photodiodes. The second photodiode performs a fragmented exposure operation in which a plurality of exposure periods of the second photodiode are shorter in duration than the first exposure period of the first photodiode, and include both continuous and fragmented exposure periods to capture the one or more bursts of light.

公开(公告)号：US10652479B2

公开(公告)日：2020-05-12

申请号：US16135647

申请日：2018-09-19

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Gal Bitan ,  Shay Hamami

IPC: H04N9/73 ,  H04N5/235 ,  H01L27/146 ,  H04N5/376 ,  H04N5/232 ,  H04N5/353

Abstract: An HDR image sensor supporting LED Flicker Mitigation to reduce Motion Blur and a method of operating same are provided. A timing controller circuit generates at least one control signal that controls an operation of the image sensor. A split-photodiode (PD) pixel includes at least two or more photodiodes that may be independently exposed to one or more bursts of light from a light source. A first photodiode of the two or more photodiodes has a first exposure period that is longer in duration than a second exposure period of a second photodiode of the two or more photodiodes. The second photodiode performs a fragmented exposure operation in which a plurality of exposure periods of the second photodiode are shorter in duration than the first exposure period of the first photodiode, and include both continuous and fragmented exposure periods to capture the one or more bursts of light.

公开(公告)号：US11812139B1

公开(公告)日：2023-11-07

申请号：US17807854

申请日：2022-06-20

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Gal Bitan ,  Tal Bernstein ,  Ilya Romm ,  Yoram Furth

IPC: H04N23/65 ,  G06T7/90 ,  G06T7/00 ,  H04N23/80 ,  H04N23/88

CPC classification number: H04N23/651 ,  G06T7/0002 ,  G06T7/90 ,  H04N23/80 ,  G06T2207/30168 ,  H04N23/88

Abstract: A method of controlling power usage in an image signal processor includes measuring an actual percentage of flat pixels in a digital image, adjusting a percentage threshold of flat pixels in the digital image, based on the measured actual percentage of flat pixels in the digital image; and processing the digital image by the image signal processor based on the percentage threshold of flat pixels. The percentage threshold of flat pixels is adjusted to reduce power used by the image signal processor in processing the digital image.

公开(公告)号：US11378690B2

公开(公告)日：2022-07-05

申请号：US16207933

申请日：2018-12-03

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Min Sun Keel ,  Gal Bitan ,  Amit Eisenberg

IPC: G01S17/36 ,  H04N5/335 ,  G01C3/08 ,  G01S7/491 ,  G01S17/894

Abstract: A time of flight (ToF) sensor includes: a first pixel including a first photogate to receive light reflected by an object and generate a first phase signal, and a second photogate to generate a second phase signal having a phase difference of 180 degrees with respect to the first phase signal; a second pixel including a third photogate to receive the reflected light and generate a third phase signal different from the first phase signal and a fourth photogate to generate a fourth phase signal having a phase difference of 180 degrees with respect to the third phase signal; a first signal output unit to output the first and second phase signals; and a second signal output unit to output the third and fourth phase signals, wherein the first, second, third and fourth photogates output the first to fourth phase signals during a frame period.

公开(公告)号：US20220070391A1

公开(公告)日：2022-03-03

申请号：US17011227

申请日：2020-09-03

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： SHAHAF DUENYAS ,  Yoel Yaffe ,  Guy Horowitz ,  Amit Eisenberg ,  Shy Hamami ,  Oded Monzon ,  Gal Bitan ,  Yoav Piepsh

IPC: H04N5/343 ,  H04N5/347

Abstract: A method performed with an image sensor having a pixel array. At least one frame of a scene may be obtained using the pixel array. At least one region of interest (ROI) is identified within the frame. Subsequent frames of the scene are obtained, which involves controlling the pixel array to perform high resolution imaging with respect to the at least one ROI and low resolution imaging using analog binning with respect to remaining regions of the frames.

公开(公告)号：US20210400217A1

公开(公告)日：2021-12-23

申请号：US16908722

申请日：2020-06-22

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： TAEER WEISS ,  Roy Yam ,  Gal Bitan

IPC: H04N5/369 ,  G01S17/894 ,  H04N5/357 ,  H04N5/222

Abstract: A method for time-of-flight (ToF) guided down-up sampling includes calculating a guide function from a full resolution output of a ToF sensor, downsampling the full resolution output by a predetermined scaling factor, calculating a downsampled depth data from the downsampled output and upsampling the downsampled depth data to full resolution using the full resolution guide function.