The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 22, 2017
Filed:
Feb. 05, 2016
Pixart Imaging Inc., Hsin-Chu County, TW;
Hsin-Chia Chen, Santa Clara, CA (US);
Kenneth Crandall, Santa Clara, CA (US);
Thomas Patrick Murphy, Santa Clara, CA (US);
PixArt Imaging Inc., Hsin-Chu County, TW;
Abstract
A capacitive touch system including a drive end, a capacitive sensing matrix and a detection end is provided. The drive end concurrently inputs encoded and modulated drive signals into a plurality of channels of the capacitive sensing matrix within each drive time slot of a frame. The detection end detects a detection matrix of the channels in the frame and decodes the detection matrix to respectively generate a two-dimensional detection vector corresponding to each of the channels. The detection end further calculates a subtraction between components of the two-dimensional detection vectors associated with two receiving electrodes of the capacitive sensing matrix to eliminate interference from noises.