Patent ID: 11871157
Assignee: PIXART IMAGING INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 10:
11. An optical sensor device, comprising:
a pixel array having a plurality of pixel units, a pixel unit being arranged to capture a pixel image; and
a processor, coupled to the pixel array, for generating a monitoring frame based on pixel images from the pixel array;
wherein the optical sensor device is arranged to enter a calibration mode to automatically define a region of interest as a masking region which comprises at least one pixel image captured by at least one pixel unit of the optical sensor device; and, in a normal operation mode, the optical sensor device selectively ignores a motion, detected within the at least one pixel unit comprised by the masking region, on an incoming monitoring image captured by the optical sensor device; a specific pixel unit is automatically determined as one pixel unit comprised by the masking region and is associated with a background motion when in the calibration mode a pixel difference between the specific pixel unit's pixel image and a reference pixel image is greater than a specific pixel threshold.