公开(公告)号：US20220179086A1

公开(公告)日：2022-06-09

申请号：US17110315

申请日：2020-12-03

Applicant: PixArt Imaging Inc.

Inventor： Zi Hao TAN ,  Joon Chok LEE ,  KEEN-HUN LEONG ,  Sai Mun LEE

IPC: G01S17/894 ,  G01S7/4865 ,  G01S7/4861

Abstract: An optical sensing system comprising: a processing circuit; an optical sensor, configured to sense first optical data respectively in first sensing time intervals; and a TOF (Time of Flight) optical sensor, configured to sense second optical data respectively in second sensing time intervals. The processing circuit computes a distance between a first object and the optical sensing system according to the second optical data. The first sensing time intervals do not overlap with the second sensing time intervals.

公开(公告)号：US20190026903A1

公开(公告)日：2019-01-24

申请号：US16140444

申请日：2018-09-24

Applicant: PixArt Imaging Inc.

Inventor： KEEN-HUN LEONG ,  BOON-HOW KOK ,  DENNIS DOMINIC DONALD

IPC: G06T7/20 ,  G06F3/0362 ,  B60W30/00 ,  B62D15/02

Abstract: An optical sensor system for determining trajectory of a car, the optical sensor system being mounted in a wheel arch of the car, includes: a plurality of optical sensors mounted in the wheel arch above a wheel, the optical sensors being located behind a plurality of clear casings that do not touch the wheel, for performing a plurality of counts corresponding to respectively capturing a plurality of images of the wheel according to an outer surface of the wheel evenly covered with wheel treads. The captured images are compared with a reference image to determine a 2D displacement of the wheel from its original position. This measured 2D displacement is converted into a distance the wheel travels along a path, and the wheel trajectory is determined by calculating a turning degree of the wheel according to a trigonometric manipulation of the captured 2D displacement.

公开(公告)号：US20180313883A1

公开(公告)日：2018-11-01

申请号：US15798405

申请日：2017-10-31

Applicant: PixArt Imaging Inc.

Inventor： Sung-Han Wu ,  Wooi Kip LIM ,  Kei Tee TIEW ,  KEEN-HUN LEONG

IPC: G01R31/02 ,  G01R31/28 ,  G01D5/24

Abstract: A short circuit testing method for a capacitive sensing device including a plurality of sense lines and a plurality of drive lines includes: under a short circuit testing mode, coupling at least one first line in the sense lines and drive lines to a reference level; using a sensing circuit corresponding to a specific sense line to read out a testing resultant signal; and, comparing the testing resultant signal with a reference signal to determine whether a short circuit exists.