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:
Apr. 14, 2015
Filed:
Jun. 07, 2012
Chenchi Eric Luo, Atlanta, GA (US);
Milind Borkar, Dallas, TX (US);
Chenchi Eric Luo, Atlanta, GA (US);
Milind Borkar, Dallas, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
An embodiment of the invention provides a method of creating a statistical model of a baseline capacitance Cof a capacitive sensor located on a capacitive-touch screen. A sensed capacitance Cof a capacitive sensor is measured during a particular state of the electronic device that includes the capacitive-touch screen. When physical contact is not made with the capacitive sensor, the sensed capacitance Cis stored as a baseline capacitance C. The baseline capacitance Cis then used to create the statistical model for that particular state of the electronic device. When physical contact is made with the capacitive sensor, the value of the baseline capacitance Cof the capacitive sensor is subtracted from the value of the sensed capacitance Cand the result, C=(C−C), is sent to a touch detection circuit.