公开(公告)号：US12137295B2

公开(公告)日：2024-11-05

申请号：US18235370

申请日：2023-08-18

Applicant: PixArt Imaging Inc.

Inventor： Ren-Chieh Liu ,  Yi-Cheng Chiu

IPC: H04N25/767 ,  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.

公开(公告)号：US12058467B2

公开(公告)日：2024-08-06

申请号：US18244296

申请日：2023-09-11

Applicant: PixArt Imaging Inc.

Inventor： Ren-Chieh Liu ,  Chih-Huan Wu ,  Yi-Hsien Ko ,  Han-Chi Liu

IPC: H04N25/772 ,  H01L27/146

CPC classification number: H04N25/772 ,  H01L27/14643

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：US12052523B2

公开(公告)日：2024-07-30

申请号：US18202964

申请日：2023-05-29

Applicant: PIXART IMAGING INC.

Inventor： Ren-Chieh Liu ,  Yi-Cheng Chiu

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

CPC classification number: H04N25/75 ,  H04N25/589 ,  H04N25/767 ,  H04N25/77 ,  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：US11863885B2

公开(公告)日：2024-01-02

申请号：US17711079

申请日：2022-04-01

Applicant: PixArt Imaging Inc.

Inventor： Ren-Chieh Liu ,  Chao-Chi Lee

IPC: H04N25/531 ,  H04N25/771 ,  H04N25/772

CPC classification number: H04N25/531 ,  H04N25/771 ,  H04N25/772

Abstract: The present disclosure provides a time delay integration (TDI) sensor using a rolling shutter. The TDI sensor includes two pixel arrays each having 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 TDI sensor doubles a number of times of integrating pixel data corresponding to the same position of a scene by arranging two separately operated pixel arrays.

公开(公告)号：US11812176B2

公开(公告)日：2023-11-07

申请号：US17395527

申请日：2021-08-06

Applicant: PIXART IMAGING INC.

Inventor： Ren-Chieh Liu ,  Yi-Cheng Chiu

IPC: H04N25/767 ,  H01L27/146

CPC classification number: H04N25/767 ,  H01L27/14612 ,  H01L27/14643

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.

公开(公告)号：US11706542B2

公开(公告)日：2023-07-18

申请号：US17401554

申请日：2021-08-13

Applicant: PIXART IMAGING INC.

Inventor： Ren-Chieh Liu ,  Yi-Cheng Chiu

IPC: H04N25/75 ,  H04N25/589 ,  H04N25/767 ,  H04N25/77 ,  H04N25/78 ,  H04N25/771 ,  H04N25/44

CPC classification number: H04N25/75 ,  H04N25/589 ,  H04N25/767 ,  H04N25/77 ,  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.