公开(公告)号：US20240196109A1

公开(公告)日：2024-06-13

申请号：US18076392

申请日：2022-12-07

Applicant: PIXART IMAGING INC.

Inventor： Chih-Huan WU

IPC: H04N25/532 ,  H04N23/73 ,  H04N25/51

CPC classification number: H04N25/532 ,  H04N23/73 ,  H04N25/51

Abstract: There is provided a global shutter sensor including a pixel array and a processor. The pixel array acquires first pixel data corresponding to a first exposure period and second pixel data corresponding to a second exposure period of different pixel regions using time division or spatial division, wherein the first exposure period is shorter than the second exposure period. The processor calculates a difference between (the second exposure period/the first exposure period)×the first pixel data and the second pixel data to obtain parasitic light sensitivity of the different pixel regions, and determines gains and/or exposure periods corresponding to the different pixel regions to compensate the parasitic light sensitivity.

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：US20240107185A1

公开(公告)日：2024-03-28

申请号：US17951221

申请日：2022-09-23

Applicant: PIXART IMAGING INC.

Inventor： Chih-Huan WU

IPC: H04N5/232 ,  H04N7/18

CPC classification number: H04N5/232411 ,  H04N5/23232 ,  H04N5/23245 ,  H04N7/183

Abstract: There is provided a motion sensor including a pixel array and a processor. The motion sensor is embedded with multiple power consumption modes. In one of the multiple power consumption modes, the pixel array outputs image frames having different frame formats. The processor processes the image frames having different frame formats respectively using different algorithms so as to achieve the purposes of low power consumption and high detection sensitivity.