公开(公告)号：US20210409630A1

公开(公告)日：2021-12-30

申请号：US17351235

申请日：2021-06-18

Applicant: PIXART IMAGING INC.

Inventor： Ren-Chieh LIU ,  Chao-Chi LEE ,  Wen-Cheng YEN

IPC: H04N5/353 ,  H04N5/3745

Abstract: The present disclosure provides a time delay integration (TDI) sensor using a rolling shutter. The TDI sensor includes multiple pixel columns. Each pixel column includes multiple pixels arranged in an along-track direction, wherein two adjacent pixels or two adjacent pixel groups in every pixel column have a separation space therebetween. The separation space is equal to a pixel height multiplied by a time ratio of a line time difference of the rolling shutter and a frame period, or equal to a summation of at least one pixel height and a multiplication of the pixel height by a time ratio of the line time difference and the frame period. The line time difference of the TDI sensor is changeable without changing the separation space.

公开(公告)号：US20220070404A1

公开(公告)日：2022-03-03

申请号：US17009417

申请日：2020-09-01

Applicant: PixArt Imaging Inc.

Inventor： Ren-Chieh LIU ,  Chih-Huan WU ,  Yi-Hsien KO ,  Han-Chi LIU

IPC: H04N5/3745 ,  H01L27/146

Abstract: There is provided a pixel circuit for performing analog operation including a photodiode, a first temporal circuit, a second temporal circuit and an operation circuit. Within a first interval, the photodiode detects first light energy to be stored in the first temporal circuit. Within a second interval, the photodiode detects second light energy to be stored in the second temporal circuit. Within an operation interval, the first temporal circuit outputs a first detection signal having a first pulse width according to the first light energy and outputs a second detection signal having a second pulse width according to the second light energy for being calculated by the operation circuit.

公开(公告)号：US20230353902A1

公开(公告)日：2023-11-02

申请号：US18350905

申请日：2023-07-12

Applicant: PIXART IMAGING INC.

Inventor： Ren-Chieh LIU

IPC: H04N25/768

CPC classification number: H04N25/768

Abstract: The present disclosure provides a time delay integration (TDI) sensor using a rolling shutter. The TDI sensor includes multiple pixel columns. Each pixel column includes multiple pixels arranged in an along-track direction, wherein two adjacent pixels or two adjacent pixel groups in every pixel column have a separation space therebetween. The separation space is equal to a pixel height multiplied by a time ratio of a line time difference of the rolling shutter and a frame period, or equal to a summation of at least one pixel height and a multiplication of the pixel height by the time ratio of the line time difference and the frame period. The TDI sensor generates image frames using pixels having different sensing ability for a processor to perform image combination.

公开(公告)号：US20230300490A1

公开(公告)日：2023-09-21

申请号：US18202964

申请日：2023-05-29

Applicant: PIXART IMAGING INC.

Inventor： Ren-Chieh LIU ,  Yi-Cheng CHIU

IPC: H04N25/75 ,  H04N25/77 ,  H04N25/589 ,  H04N25/767 ,  H04N25/771 ,  H04N25/78

CPC classification number: H04N25/75 ,  H04N25/77 ,  H04N25/589 ,  H04N25/767 ,  H04N25/771 ,  H04N25/78

Abstract: There is provided a pixel circuit capable of outputting time difference data and image data, and including an image circuit and a difference circuit. The image circuit is used to record and output detected light energy of a first interval as the image data. The difference circuit is used to record and output a variation of detected light energy between the first interval and a second interval as the time difference data. The pixel circuit selects to output at least one of the time difference data and the image data.

公开(公告)号：US20230164458A1

公开(公告)日：2023-05-25

申请号：US17878062

申请日：2022-08-01

Applicant: PIXART iMAGING INC. ,  NATIONAL APPLIED RESEARCH LABORATORIES

Inventor： Ren-Chieh LIU ,  Chao-Chi Lee

IPC: H04N25/768 ,  H04N25/702 ,  H04N25/531 ,  H04N25/51

CPC classification number: H04N25/768 ,  H04N25/702 ,  H04N25/531 ,  H04N25/51 ,  H04N25/77

Abstract: The present disclosure provides a time delay integration (TDI) sensor using a rolling shutter. The TDI sensor includes multiple pixel columns. Each pixel column includes multiple pixels arranged in an along-track direction, wherein two adjacent pixels or two adjacent pixel groups in every pixel column have a separation space therebetween. The separation space is equal to a pixel height multiplied by a time ratio of a line time difference of the rolling shutter and a frame period, or equal to a summation of at least one pixel height and a multiplication of the pixel height by the time ratio of the line time difference and the frame period. The TDI sensor further generates pixel data amplified by different gains for a processor to perform the image combination.

公开(公告)号：US20220070401A1

公开(公告)日：2022-03-03

申请号：US17401554

申请日：2021-08-13

Applicant: PIXART IMAGING INC.

Inventor： Ren-Chieh LIU ,  Yi-Cheng CHIU

IPC: H04N5/378 ,  H04N5/355 ,  H04N5/374 ,  H04N5/3745

Abstract: There is provided a pixel circuit capable of outputting time difference data and image data, and including an image circuit and a difference circuit. The image circuit is used to record and output detected light energy of a first interval as the image data. The difference circuit is used to record and output a variation of detected light energy between the first interval and a second interval as the time difference data. The pixel circuit selects to output at least one of the time difference data and the image data.

公开(公告)号：US20240073563A1

公开(公告)日：2024-02-29

申请号：US18503265

申请日：2023-11-07

Applicant: PIXART IMAGING INC. ,  TAIWAN SPACE AGENCY

Inventor： Ren-Chieh LIU ,  Chao-Chi LEE ,  Yi-Yuan CHEN ,  En-Feng HSU

IPC: H04N25/768 ,  H04N25/531 ,  H04N25/75

CPC classification number: H04N25/768 ,  H04N25/531 ,  H04N25/75

Abstract: The present disclosure provides a time delay integration (TDI) sensor using a rolling shutter. The TDI sensor includes multiple pixel columns. Each pixel column includes multiple pixels arranged in an along-track direction, wherein two adjacent pixels or two adjacent pixel groups in every pixel column have a separation space therebetween. The separation space is equal to a pixel height multiplied by a time ratio of a line time difference of the rolling shutter and a frame period, or equal to a summation of at least one pixel height and a multiplication of the pixel height by the time ratio of the line time difference and the frame period. The TDI sensor further records defect pixels of a pixel array such that in integrating pixel data to integrators, the pixel data associated with the defect pixels is not integrated into corresponding integrators.

公开(公告)号：US20230386258A1

公开(公告)日：2023-11-30

申请号：US18233892

申请日：2023-08-15

Applicant: PIXART IMAGING INC.

Inventor： Ren-Chieh LIU ,  Yi-Hsien KO ,  Han-Chi LIU

IPC: G06V40/20 ,  G06V10/94 ,  H04N25/75

CPC classification number: G06V40/20 ,  G06V10/94 ,  H04N25/75

Abstract: There is provided an optical sensor including a pixel matrix and a readout circuit. The pixel matrix includes multiple pixels arranged in a matrix, and each of the multiple pixels outputs temporal difference pixel data. The readout circuit sequentially reads the pixel matrix using a readout block, and performs the hybrid difference calculation on the temporal difference pixel data of pixels within the readout block. Accordingly, the output of the readout circuit is the data accomplishing temporal difference and spatial difference.

公开(公告)号：US20230123405A1

公开(公告)日：2023-04-20

申请号：US17849711

申请日：2022-06-27

Applicant: PIXART IMAGING INC. ,  NATIONAL APPLIED RESEARCH LABORATORIES

Inventor： Ren-Chieh LIU ,  Chao-Chi LEE ,  Yi-Yuan CHEN ,  En-Feng HSU

IPC: H04N5/374 ,  H04N5/353 ,  H04N5/378

Abstract: The present disclosure provides a time delay integration (TDI) sensor using a rolling shutter. The TDI sensor includes multiple pixel columns. Each pixel column includes multiple pixels arranged in an along-track direction, wherein two adjacent pixels or two adjacent pixel groups in every pixel column have a separation space therebetween. The separation space is equal to a pixel height multiplied by a time ratio of a line time difference of the rolling shutter and a frame period, or equal to a summation of at least one pixel height and a multiplication of the pixel height by the time ratio of the line time difference and the frame period. The TDI sensor further records defect pixels of a pixel array such that in integrating pixel data to integrators, the pixel data associated with the defect pixels is not integrated into corresponding integrators.

公开(公告)号：US20220070402A1

公开(公告)日：2022-03-03

申请号：US17395527

申请日：2021-08-06

Applicant: PIXART IMAGING INC.

Inventor： Ren-Chieh LIU ,  Yi-Cheng CHIU

IPC: H04N5/374 ,  H01L27/146

Abstract: There is provided a pixel circuit capable of outputting time difference data or image data, and including a first temporal circuit and a second temporal circuit. The first temporal circuit is used to store detected light energy of a first interval and a second interval as the time difference data. The second temporal circuit is used to store detected light energy of the second interval as the image data. The pixel circuit is used to output a pulse width signal corresponding to the time difference data or the image data in different operating modes.