Data carrier and data carrier system

Details Data carrier and data carrier system Data carrier and data carrier system

2007-10-29

2010-11-16

Crosland, Donnie L (Department: 2612)

Communications: electrical

Condition responsive indicating system

With particular system function

C340S572100, C340S005800, C340S010100, C340S005610, C340S870030, C235S380000

Reexamination Certificate

active

07834753

ABSTRACT:
Both RF communication and contact serial communication can be performed with the use of: communication protocol storage unit for storing a communication protocol for performing communication with an external communication apparatus; a coil terminal section provided with two coil terminals for performing communication with the external communication apparatus with an RF signal; a contact communication terminal section provided with a first communication terminal, a second communication terminal, a power supply voltage terminal and a ground terminal as contact communication terminals for performing contact communication with the external communication apparatus; and connection control unit for causing the power supply voltage terminal and a power supply of an internal switch circuit to be in contact or non-contact with each other depending on the level of voltage applied to the first and second communication terminals.

REFERENCES:
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patent: 2000-276566 (2000-10-01), None
patent: WO-99/42952 (1999-08-01), None
Finkenzeller Klaus: “RFID-Handbuch: Grundlagen und praktische Anwendungen induktiver Funkanlagen, Transponder und kontaktloser Chipkarten:8. Datensicherheit,” RFID Handbook: Grundlagen Und Praktische Anwendungen, Jan. 2002, pp. 225-231.
European Search Report dated Nov. 13, 2009, issued on the corresponding European Patent Application No. 07 11 9657.0.

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