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：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：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.

公开(公告)号：US20190174084A1

公开(公告)日：2019-06-06

申请号：US15830754

申请日：2017-12-04

Applicant: PixArt Imaging Inc.

Inventor： Chia-Chi KUO ,  Jui-Te CHIU ,  Han-Chi LIU ,  Peng-Sheng CHEN ,  Yi-Cheng CHIU

IPC: H04N5/378 ,  H04N5/369 ,  H04N5/3745

Abstract: An image sensor including a first pixel circuit, a second pixel circuit, a first readout line, a second readout line, a first readout circuit, a second readout circuit and an average switch is provided. The first and second pixel circuits are in two columns of a pixel array. The first readout line transmits pixel data of the first pixel circuit to the first readout circuit. The second readout line transmits pixel data of the second pixel circuit to the second readout circuit. The average switch is arranged between the first and second readout lines and used to electrically connect the first and second readout lines in an average mode to average the pixel data on the first and second readout lines.

公开(公告)号：US20210404870A1

公开(公告)日：2021-12-30

申请号：US17474738

申请日：2021-09-14

Applicant: PixArt Imaging Inc.

Inventor： Kuan TANG ,  Yi-Cheng CHIU ,  Chia-Chi KUO ,  Jui-Te CHIU ,  Han-Chi LIU

IPC: G01J1/46

Abstract: There is provided a circuit to improve the sensing efficiency of pixels that uses the induction effect of a capacitor to duplicate a voltage deviation caused by additional electrons and uses a circuit to cancel out the voltage deviation during reading pixel data thereby improving the sensing efficiency.