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. 07, 2017
Filed:
Jun. 26, 2015
Cypress Semiconductor Corporation, San Jose, CA (US);
Jaskarn Singh Johal, Mukilteo, WA (US);
Erhan Hancioglu, Bothell, WA (US);
Renee Leong, Seattle, WA (US);
Harold M. Kutz, Edmonds, WA (US);
Eashwar Thiagarajan, Bothell, WA (US);
Onur Ozbek, Kirkland, WA (US);
Cypress Semiconductor Corporation, San Jose, CA (US);
Abstract
A fingerprint sensing circuit, system, and method is disclosed. The fingerprint sensor maybe include a plurality of inputs coupled to a plurality of fingerprint sensing electrodes and to an analog front end. The analog front end may be configured to generate at least one digital value in response to a capacitance of at least one of the plurality of fingerprint sensing electrodes. Additionally, the analog front end may include a quadrature demodulation circuit to generate at least one demodulated value for processing by a channel engine. The channel engine may generate a capacitance result value that is based, in part, on the demodulated value and is stored in a memory.