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. 21, 2015
Filed:
Apr. 05, 2013
Quotainne Enterprises Llc, Wilmington, DE (US);
Jean-Philippe Audic, Aix-en-Provence, FR;
Quotainne Enterprises LLC, Wilmington, DE (US);
Abstract
Power consumption of near-field communication devices is regulated by waking the device for communications when a potential external near-field device is detected, and by adjusting the resonant antenna circuit to account for the detected change in antenna environment. Such near-field communication devices include a resonant loop antenna circuit. The resonant loop antenna circuit is connected to an integrated circuit that includes a controller for controlling near-field communications via the resonant loop antenna circuit, an inductance detection circuit to detect changes in the antenna inductance, a wake-on circuit responsive to a sufficient change in antenna inductance to transition the controller from a low power sleep mode to a communications mode, and an antenna tuning circuit to adjust the variable component of the resonant loop antenna circuit to compensate for changes in antenna inductance and to maintain the target range of operation.