Communications: electrical – Condition responsive indicating system – Specific condition
Reexamination Certificate
2006-08-08
2006-08-08
Nguyen, Tai T. (Department: 2632)
Communications: electrical
Condition responsive indicating system
Specific condition
C340S572200, C340S010200, C340S010400, C343S702000, C343S742000, C343S850000, C343S867000
Reexamination Certificate
active
07088245
ABSTRACT:
A remote-readable identification tag (T) that is provided with at least two resonance circuits (81 . . . 8n) and at least one transmitter/receiver antenna system (1) coupled with the circuits. The at least two circuits have a respectively different resonant frequency. A delay device (6) of the remote-readable identification tag delays a signal response between a signal received by the antenna system and a signal emitted in response by the antenna system, e.g., by delaying feeding the received signal into the resonance circuits.
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Klaus Finkenzeller “Vorwort” RFID-Handbook, pp. 28-29, Hanser Verlag Wien, 1998, Munich, Germany.
Guntersdorfer Max
Zarschizky Helmut
Zorn Gerhard
Nguyen Tai T.
Siemens Aktiengesellschaft
Sughrue & Mion, PLLC
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