NON-CONTACT IC CARD AND ELECTRONIC APPARATUS MOUNTED WITH NON-CONTACT IC CARD

PROBLEM TO BE SOLVED: To improve tuning performance when a use environment and antenna characteristics are different between an RFID card and an RFID reader/writer.SOLUTION: An RFID card (2) that is tuned to a radio wave emitted from an RFID reader/writer to establish communication with the RFID rea...

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Bibliographic Details
Main Author ITANO WATARU
Format Patent
LanguageEnglish
Published 02.10.2014
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
HANDLING RECORD CARRIERS
PHYSICS
PRESENTATION OF DATA
RECOGNITION OF DATA
RECORD CARRIERS
TRANSMISSION
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Summary:PROBLEM TO BE SOLVED: To improve tuning performance when a use environment and antenna characteristics are different between an RFID card and an RFID reader/writer.SOLUTION: An RFID card (2) that is tuned to a radio wave emitted from an RFID reader/writer to establish communication with the RFID reader/writer comprises a resonant circuit part (20) that switches a resonant frequency when an elapsed time from the start of a trial of tuning at a current resonant frequency exceeds a preset predetermined time.
Bibliography:Application Number: JP20130061030