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. 19, 2024
Filed:
Feb. 10, 2022
Cypress Semiconductor Corporation, San Jose, CA (US);
Prasanna Venkateswaran Vijayakumar, Bangalore, IN;
Vishwas Kedilaya, Bangalore, IN;
Jeevith Kumar Nagamangala Muninarayanappa, Bengaluru, IN;
Tudu Rushika Banam Balia, Bangalore, IN;
Cypress Semiconductor Corporation, San Jose, CA (US);
Abstract
A method of foreign object detection by a wireless power delivery system is disclosed. A decaying coil voltage signal of a transmitting coil of the wireless power delivery system is detected. A first comparator is used to trigger a cycle count of the decaying coil voltage signal. When the first comparator triggers the cycle count, a second comparator is used to count a number of cycles of the decaying coil voltage signal. A quality factor (Q-factor) of the transmitting coil is determined based on the number of cycles of the decaying coil voltage signal, a reference signal of the first comparator, and a reference signal of the second comparator. Whether a foreign object is present is determined based on the Q-factor and a foreign object detection (FOD) threshold level.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile