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. 28, 2015
Filed:
Sep. 12, 2012
Hans W. Klein, Pleasanton, CA (US);
Paul Walsh, Cork, IE;
Keith O'donoghue, Cork, IE;
Roman Ogirko, Lviv, UA;
Hans W. Klein, Pleasanton, CA (US);
Paul Walsh, Cork, IE;
Keith O'Donoghue, Cork, IE;
Roman Ogirko, Lviv, UA;
Cypress Semiconductor Corporation, San Jose, CA (US);
Abstract
A compensation circuit may include a current source configured to control an amplitude of a current pulse, a memory configured to store a plurality of duration values each corresponding to a set of one or more sensor electrodes of a plurality of sensor electrodes, and a pulse width controller configured to control a duration of the current pulse based on a first duration value of the plurality of duration values, and to apply the current pulse to a compensation node of a capacitance sensor during a measurement cycle for a first set of one or more sensor electrodes, where the first set of one or more sensor electrodes corresponds to the first duration value.