公开(公告)号：US20240089620A1

公开(公告)日：2024-03-14

申请号：US18517011

申请日：2023-11-22

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：US20220224848A1

公开(公告)日：2022-07-14

申请号：US17711079

申请日：2022-04-01

Applicant: PixArt Imaging Inc.

Inventor： REN-CHIEH LIU ,  CHAO-CHI LEE

IPC: H04N5/353 ,  H04N5/3745

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：US20170271976A1

公开(公告)日：2017-09-21

申请号：US15606453

申请日：2017-05-26

Applicant: PIXART IMAGING INC.

Inventor： CHAO-CHI LEE ,  HAN-CHI LIU

IPC: H02M1/32 ,  H02M1/08

CPC classification number: H02M1/32 ,  G05F1/56 ,  H02H9/02 ,  H02M1/083 ,  H02M3/00 ,  H02M3/155 ,  H02M2001/0045 ,  H02M2003/1566

Abstract: A surge current compensating circuit has a compensating current generation unit, a bias unit, and a switch unit, for compensating a surge current drawn from a supply power after an output signal of a specific circuit transits. The compensating current generation unit is electrically coupled to the output stage of the specific circuit. The bias unit is electrically coupled to the compensating current generation unit through the switch unit. Before the output signal transits, the switch unit is disabled and the compensating current generation unit is enabled, so as to draw the compensating current from the supply power. After the output signal transits, the switch unit is enabled and the compensating current generation unit is disabled, such that the compensating current is not drawn from the supply power.