System and method for interrogation radio-frequency identification

System and method for interrogation radio-frequency identification

A system and method for communicating with contactless IC cards of multiple protocols and power levels includes generating a first alternating magnetic field with an interrogator for energizing a proximate IC card and receiving a data transmission from the IC card. A processor of the interrogator is...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: NELSON CHRISTOPHER J, LINDLEY SCOTT E
Format: Patent
Sprache:eng
Schlagworte:
CALCULATING
COMPUTING
COUNTING
HANDLING RECORD CARRIERS
PHYSICS
PRESENTATION OF DATA
RECOGNITION OF DATA
RECORD CARRIERS
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Beschreibung
Zusammenfassung:A system and method for communicating with contactless IC cards of multiple protocols and power levels includes generating a first alternating magnetic field with an interrogator for energizing a proximate IC card and receiving a data transmission from the IC card. A processor of the interrogator is configured to decode the received data transmission. The interrogator then generates a second alternating magnetic field having a different magnetic field strength than the first alternating magnetic field when failing to decode the data transmission being received from the IC card. The processor then attempts to decode a data transmission received from the IC card in response to the second alternating magnetic field.