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:
May. 13, 2014
Filed:
Jun. 30, 2010
Keith E. Curtis, Gilbert, AZ (US);
Stephen B. Porter, Gilbert, AZ (US);
Burke T. Davison, Chandler, AZ (US);
Aurelian Floricica-voicu, Ploiesti, RO;
Keith E. Curtis, Gilbert, AZ (US);
Stephen B. Porter, Gilbert, AZ (US);
Burke T. Davison, Chandler, AZ (US);
Aurelian Floricica-Voicu, Ploiesti, RO;
Microchip Technology Incorporated, Chandler, AZ (US);
Abstract
Systems and methods for determining a user's touch in a capacitive touch sensor system is provided, including performing a series of potential touch detection tests for a plurality of sensors until a potential touch is detected and measuring a test frequency for one of the sensors, such that a potential touch may be detected when the measured test frequency deviates from a previously measured test frequency for the same sensor. After detecting a potential touch, the method may additionally include performing a series of baseline comparison tests for each of the sensors, for example, measuring a current frequency for one of the sensors, comparing the current frequency to a baseline frequency, and assigning a deviation value based on the comparison the current frequency and the baseline frequency. The method may identify the sensor with the largest deviation value as a touched sensor.