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:
Mar. 10, 2015
Filed:
Dec. 18, 2012
Stmicroelectronics Asia Pacific Pte. Ltd., Singapore, SG;
Stmicroelectronics S.r.l., Agrate Brianza, IT;
Kien Beng Tan, Singapore, SG;
Ernesto Lasalandra, San Donato Milanese, IT;
Tommaso Ungaretti, Pavia, IT;
Yannick Guedon, Mimosa Park, SG;
Dianbo Guo, Singapore, SG;
Paolo Angelini, Bologna, IT;
Giovanni Carlo Tripoli, Milan, IT;
STMicroelectronics Asia Pacific Pte Ltd, Singapore, SG;
STMicroelectronics S.r.l., Agrate Brianza (MB), IT;
Abstract
Capacitance sensing circuits and methods are provided. A dual mode capacitance sensing circuit includes a capacitance-to-voltage converter having an amplifier and an integration capacitance coupled between an output and an inverting input of the amplifier, and a dual mode switching circuit responsive to mutual mode control signals for a controlling signal supplied from a capacitive touch matrix to the capacitance-to-voltage converter in a mutual capacitance sensing mode and responsive to self mode control signals for controlling signals supplied from the capacitive touch matrix to the capacitance-to-voltage converter in a self capacitance sensing mode, wherein the capacitance sensing circuit is configurable for operation in the mutual capacitance sensing mode or the self capacitance sensing mode.