POWER HARVESTING IN A PASSIVE RFID DEVICE

A method of harvesting power in a passive RFID device 102 including a passive biometric authentication engine 120, comprises receiving a command from a powered RFID reader 104 and supplying power extracted from an excitation field of the RFID reader 104 to the biometric authentication engine 102 whi...

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Bibliographic Details
Main Author WENDLING, JEAN-HUGUES
Format Patent
LanguageEnglish
Published 27.04.2017
Subjects
CALCULATING
COMPUTING
COUNTING
HANDLING RECORD CARRIERS
PHYSICS
PRESENTATION OF DATA
RECOGNITION OF DATA
RECORD CARRIERS
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Summary:A method of harvesting power in a passive RFID device 102 including a passive biometric authentication engine 120, comprises receiving a command from a powered RFID reader 104 and supplying power extracted from an excitation field of the RFID reader 104 to the biometric authentication engine 102 whilst the RFID reader 104 waits for a response to the command. Responsive to determining that a period that the RFID device 102 has been waiting for a response exceeds a predetermined threshold, and that a process being performed by the biometric authentication engine 120 has not been completed, a request for a wait time extension is sent to the RFID reader 104 to cause it to continue supplying the excitation field.
Bibliography:Application Number: SG20171102482X