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. 06, 2013
Filed:
Apr. 23, 2009
Hup-peng Goh, Singapore, SG;
Shantonu Bhadury, Singapore, SG;
Kusuma Adi Ningrat, Singapore, SG;
Chee Yu NG, Singapore, SG;
Giuseppe Noviello, Singapore, SG;
Hup-Peng Goh, Singapore, SG;
Shantonu Bhadury, Singapore, SG;
Kusuma Adi Ningrat, Singapore, SG;
Chee Yu Ng, Singapore, SG;
Giuseppe Noviello, Singapore, SG;
STMicroelectronics Asia Pacific Pte Ltd., Singapore, SG;
Abstract
A method of matrix sensing using delay-based capacitance sensing, including using X-axis lines as active lines for capacitance measurements and using Y-axis lines as a disturbance to identify the location of a touch in a key matrix is disclosed. A sensing signal is applied to the X-axis lines, and a disturbance signal is applied to the Y-axis lines. If a location is touched, cross-capacitance is reduced, which is measured by sweeping data along the X-axis lines.