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:
Jan. 03, 2017
Filed:
Jun. 28, 2013
Samuel Brunet, Cowes, GB;
Richard Paul Collins, Southampton, GB;
Luben Hristov Hristov, Sofia, BG;
Steinar Myren, Vikhammer, NO;
Trond Jarle Pedersen, Trondhelm, NO;
Paul Stavely, Southampton, GB;
Samuel Brunet, Cowes, GB;
Richard Paul Collins, Southampton, GB;
Luben Hristov Hristov, Sofia, BG;
Steinar Myren, Vikhammer, NO;
Trond Jarle Pedersen, Trondhelm, NO;
Paul Stavely, Southampton, GB;
Atmel Corporation, San Jose, CA (US);
Abstract
In one embodiment, a touch sensor includes a touch screen having a plurality of electrodes and a controller. The controller is operable to detect that an object is in proximity to the touch screen by measuring capacitance values from a reference area of the touch screen, determining a reference capacitance value using the measured capacitance values from the reference area, measuring capacitance values from a main area of the touch screen, and suppressing noise from the measured capacitance values of the main area by subtracting the reference capacitance value from the measured capacitance values of the main area of the touch screen. The reference area includes two or more of the plurality of electrodes, and at least one of the electrodes of the reference area is electrically coupled to a voltage reference. The main area includes electrodes of the plurality of electrodes that are not in the reference area.