Patent ID: 9395846
Filing Date: 2016-07-19
CPC Classification: G06F

Claim Text:
1. A touch screen, comprising: infrared-emitting diodes, infrared-receiving diodes, a touch detection region, a multi-channel-to-one-channel multiplexer, filtering circuits, a processing circuit, and an amplifier and an A/D converter connected in series between the multi-channel-to-one-channel multiplexer and the processing circuit, wherein at least two of the infrared-receiving diodes are arranged to receive infrared light from the same infrared light-emitting diode simultaneously, wherein the number of the filtering circuits equals the number of the infrared-receiving diodes, and there is a one-to-one relationship between the filtering circuits and the infrared-receiving diodes, wherein the filtering circuits are configured to filter out interfering light signals from signals received by said at least two of the infrared-receiving diodes simultaneously, and then output the filtered signals to the multi-channel-to-one-channel multiplexer before relaying to the processing circuit for processing.