Patent ID: 11907440
Assignee: PIXART IMAGING INC.
Field: Digital communication (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A method of a navigation sensor circuit, comprising:
monitoring at least one polling request signal sent from a microcontroller during a variable time interval, wherein the microcontroller is externally coupled to the navigation sensor circuit;
calculating at least one polling rate of the microcontroller according to the at least one polling request signal; and
dynamically adjusting a sensor frame rate of the navigation sensor circuit according the at least one polling rate, wherein an image sensor of the navigation sensor circuit operates and captures images to generate and output displacement data based on the sensor frame rate;
wherein a time length of the variable time interval is proportional to a programmable threshold, and a specific counter is used to count a number of signal receptions of the at least one polling request signal and is reset when a counting number of the specific counter is higher than the programmable threshold.