Data carrier system

Details Data carrier system Data carrier system

1997-11-20

2000-09-12

Zimmerman, Brian

Communications: electrical

Selective

Interrogation response

34082531, 3405721, 3405725, 343895, 343866, 455 41, 4551931, H04Q 522

Patent

active

061183679

ABSTRACT:
A data carrier system is provided including: a main apparatus including a first control unit for outputting a first signal and a first coil unit having at least a transmission coil for transmitting the first signal; a tuner circuit unit having a tuner circuit being tuned with the frequency of the first signal, the tuner circuit having a tuning coil disposed facing the transmission coil of the first coil unit; and a tag including a second coil unit having at least a reception coil and a second control unit for performing a predetermined control operation in accordance with the first signal transmitted from the main apparatus and received by the reception coil of the second coil unit.

REFERENCES:
patent: 4864633 (1989-09-01), Chatelot
patent: 5153583 (1992-10-01), Murdoch
patent: 5258766 (1993-11-01), Murdoch
patent: 5287113 (1994-02-01), Meier
patent: 5406262 (1995-04-01), Herman et al.
patent: 5500651 (1996-03-01), Schuermann
patent: 5694139 (1997-12-01), Saito et al.
patent: 5808587 (1998-09-01), Shima

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