公开(公告)号：US20240388812A1

公开(公告)日：2024-11-21

申请号：US18787256

申请日：2024-07-29

Applicant: PixArt Imaging Inc.

Inventor： SEN-HUANG HUANG ,  TSO-SHENG TSAI

IPC: H04N25/75 ,  H01L27/146 ,  H01L31/107 ,  H04N25/76

Abstract: There is provided an image sensor employing an avalanche diode. The image sensor includes a plurality of pixel circuits arranged in a matrix, a plurality of pulling circuits, a plurality of output circuits and a global current source circuit. Each of the plurality of pixel circuits includes a single photon avalanche diode and a P-type or N-type select switch transistor. Each of the plurality of pulling circuits is arranged corresponding to one pixel circuit column. The global current source circuit is used to form a current mirror with each of the plurality of pulling circuits. Each of the plurality of output circuits is shared by at least two pixel circuits.

公开(公告)号：US20240385297A1

公开(公告)日：2024-11-21

申请号：US18787398

申请日：2024-07-29

Applicant: PixArt Imaging Inc.

Inventor： TSO-SHENG TSAI

IPC: G01S7/487 ,  G01S7/4865 ,  G01S17/04

Abstract: There is provided a detection device including a light source, an avalanche diode, a first counter, a second counter and a processor. The light source emits light within a first interval, and is turned off within a second interval, a third interval and a fourth interval. The avalanche diode detects photons corresponding to the first interval, second, third and fourth intervals to trigger avalanche events. The first counter performs up-counting on the avalanche events in the first interval and performs down-counting on the avalanche events in the third interval to generate a first count value. The second counter performs up-counting on the avalanche events in the second interval and performs down-counting on the avalanche events in the fourth interval to generate a second count value. The processor calculates a time-of-flight according to the first count value and the second count value.

公开(公告)号：US20230403481A1

公开(公告)日：2023-12-14

申请号：US18231435

申请日：2023-08-08

Applicant: PixArt Imaging Inc.

Inventor： SEN-HUANG HUANG ,  TSO-SHENG TSAI

IPC: H04N25/75 ,  H01L27/146 ,  H04N25/76

CPC classification number: H04N25/75 ,  H01L27/14643 ,  H01L27/14612 ,  H04N25/76 ,  H01L31/107

Abstract: There is provided an image sensor employing an avalanche diode. The image sensor includes a plurality of pixel circuits arranged in a matrix, a plurality of pulling circuits, a plurality of output circuits and a global current source circuit. Each of the plurality of pixel circuits includes a single photon avalanche diode and a P-type or N-type select switch transistor. Each of the plurality of pulling circuits is arranged corresponding to one pixel circuit column. The global current source circuit is used to form a current mirror with each of the plurality of pulling circuits. Each of the plurality of output circuits is shared by at least two pixel circuits.

公开(公告)号：US20220260680A1

公开(公告)日：2022-08-18

申请号：US17735547

申请日：2022-05-03

Applicant: PixArt Imaging Inc.

Inventor： TSO-SHENG TSAI

IPC: G01S7/487 ,  G01S7/4865 ,  G01S17/04

Abstract: There is provided a detection device including a light source, an avalanche diode, a first counter, a second counter and a processor. The light source emits light within a first interval, and is turned off within a second interval, a third interval and a fourth interval. The avalanche diode detects photons corresponding to the first interval, second, third and fourth intervals to trigger avalanche events. The first counter performs up-counting on the avalanche events in the first interval and performs down-counting on the avalanche events in the third interval to generate a first count value. The second counter performs up-counting on the avalanche events in the second interval and performs down-counting on the avalanche events in the fourth interval to generate a second count value. The processor calculates a time-of-flight according to the first count value and the second count value.