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:
Jun. 07, 2016
Filed:
Dec. 02, 2013
Qualcomm Technologies International, Ltd., Cambridge, GB;
Anthony Lawrence McFarthing, Cambridgeshire, GB;
Rainer Herberholz, Cambridge, GB;
Peter Andrew Rees Williams, Cambridge, GB;
Qualcomm Technologies International, Ltd., Cambridge, GB;
Abstract
Methods and devices are described, including a near-field communications (NFC) or radio frequency identification (RFID) device comprising an NFC or RFID circuit, an antenna having at least a first terminal, a first rectifier connected to the first terminal of the antenna, a switch between the first rectifier and the NFC or RFID circuit, a voltage detector for detecting a voltage in the device caused by a signal received at the antenna, and a control module for controlling the switch, wherein when the voltage exceeds a threshold magnitude, the control module controls the switch to be in an open state and, after a predetermined time period, determines whether the voltage still exceeds the threshold magnitude and, if the voltage still exceeds the predetermined magnitude, controls the switch to be in the open state.