公开(公告)号：US12229969B2

公开(公告)日：2025-02-18

申请号：US17865405

申请日：2022-07-15

Applicant: PixArt Imaging Inc.

Inventor： Joon Chok Lee ,  Kevin Len-Li Lim

IPC: G06K9/00 ,  G06T7/13 ,  G06T7/20 ,  G06V10/75 ,  G08B29/18

Abstract: A method of identifying a false alarm of an optical motion sensor including a plurality of pixel units, includes: receiving pixel values of a testing set of pixel units selected from the plurality of pixel units, and a number of pixels of the testing set is smaller than a number of the plurality of pixel units; and performing a background adjustment operation according to the pixel values of the testing set of pixel units.

公开(公告)号：US10474257B2

公开(公告)日：2019-11-12

申请号：US16401502

申请日：2019-05-02

Applicant: PixArt Imaging Inc.

Inventor： Zi-Hao Tan ,  Kevin Len-Li Lim

IPC: G06F3/038 ,  G06F3/03 ,  G06F3/0354 ,  G06T7/246

Abstract: An optical navigation device including an image sensor, a navigation engine, a smoothing engine and an adjusting interface. The image sensor generates image frames. The navigation engine calculates displacement according to the image frames. The smoothing engine changes a smoothing level for smoothing the calculated displacement according to a trigger signal sent from the adjusting interface.