Patent ID: 11882637
Assignee: SENSORTEK TECHNOLOGY CORP.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC G  H | IPC H

Claim 0:
1. An operation method of proximity sensor, comprising steps of:
a processing circuit controlling a light-emitting device to emit light using a plurality sets of light-source turn-on operations and light-source turn-off operations;
an optical sensor receiving said light and outputting a sensing signal corresponding to the intensity of said light; and
said processing circuit operating said sensing signal for producing a sensing result;
wherein said plurality sets of light-source turn-on operations and light-source turn-off operations include a group; said group include two sets of light-source turn-on operations and light-source turn-off operations; and said two light-source turn-on operations in said group or said two light-source turn-off operations in said group are performed successively, wherein said processing circuit integrates and sums said sensing signal from said plurality of light-source turn-on operations and said plurality of light-source turn-off operations; and said processing circuit subtracts the integration for said plurality of light-source turn-off operations from the integration for said plurality of light-source turn-on operations to give said sensing result.