US 12,229,969 B2
Method and optical motion sensor capable of identifying false motion
Joon Chok Lee, Penang (MY); and Kevin Len-Li Lim, Penang (MY)
Assigned to PixArt Imaging Inc., Hsin-Chu (TW)
Filed by PixArt Imaging Inc., Hsin-Chu (TW)
Filed on Jul. 15, 2022, as Appl. No. 17/865,405.
Prior Publication US 2024/0020850 A1, Jan. 18, 2024
Int. Cl. G06K 9/00 (2022.01); G06T 7/13 (2017.01); G06T 7/20 (2017.01); G06V 10/75 (2022.01); G08B 29/18 (2006.01)
CPC G06T 7/20 (2013.01) [G06T 7/13 (2017.01); G06V 10/751 (2022.01); G08B 29/185 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A method of identifying a false alarm of an optical motion sensor including a sensor circuit including a pixel array having a plurality of pixel units to output pixel values corresponding to the plurality of pixel units, wherein the method comprises:
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.