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. 10, 2023
Filed:
Dec. 19, 2019
Cypress Semiconductor Corporation, San Jose, CA (US);
Paul M. Walsh, Cork, IE;
Dermot MacSweeney, Cork, IE;
Daniel O'Keeffe, Whitechurch, IE;
Kofi Makinwa, San Jose, CA (US);
Matheus Pimenta, Brasíilia, BR;
Dennis R. Seguine, Temecula, CA (US);
Ça{hacek over (g)}ri Gürleyük, Delfgauw, NL;
Cypress Semiconductor Corporation, San Jose, CA (US);
Abstract
One inductive sensor is configured to maintain a fixed frequency in a resonant circuit. One apparatus includes an inductance-to-digital converter (LDC). The LDC includes a digital filter to measure an inductance change of a sensor and convert the inductance change to a digital value. The LDC further includes a digital control loop to maintain a fixed frequency in the sensor. The sensor forms an oscillator in the digital control loop. An output of the digital control loop is representative of the inductance change of the sensor.