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. 05, 2016
Filed:
Dec. 20, 2011
Gianpaolo Lisi, San Jose, CA (US);
Gerard G. Socci, Palo Alto, CA (US);
Ali Djabbari, Saratoga, CA (US);
Ali Kiaei, San Jose, CA (US);
Ahmad R. S. Bahai, Lafayette, CA (US);
Jeffrey Anthony Morroni, Littleton, CO (US);
Gianpaolo Lisi, San Jose, CA (US);
Gerard G. Socci, Palo Alto, CA (US);
Ali Djabbari, Saratoga, CA (US);
Ali Kiaei, San Jose, CA (US);
Ahmad R. S. Bahai, Lafayette, CA (US);
Jeffrey Anthony Morroni, Littleton, CO (US);
NATIONAL SEMICONDUCTOR CORPORATION, Santa Clara, CA (US);
Abstract
In a wireless power transfer system with multiple receivers, receiver management may be necessary to effectively provide power to the multiple receivers. In one implementation, receiver management includes sweeping or stepping the transmitter resonant and/or operating frequency. In another implementation, receiver management includes receiver self-management, in which the receiver load current duty cycle is controlled to maintain receiver voltage even in the presence of multiple receivers. In another implementation, receiver management includes receiver self-management, in which one or more receivers use a time-sharing heuristic to identify when other receivers are charging and wait to begin receiving a transfer of power until another receiver has stopped receiving a transfer of power.