Radio frequency identification transponder with electronic circu

Details Radio frequency identification transponder with electronic circu Radio frequency identification transponder with electronic circu

1998-11-12

2000-08-15

Zimmerman, Brian

Communications: electrical

Selective

Interrogation response

34082569, 116137A, H04Q 100

Patent

active

061042811

ABSTRACT:
An RF tag has an enable/disable circuit connected to a critical part of an electronic object/circuit, e.g. a computer mother board. The critical part of the circuit is any circuit component and/or connection that can enable and/or disable the electric circuit operation. Signals are sent to the tag to change data in the tag memory which causes the enable/disable tag circuit to control the critical part to enable and disable the electric circuit. A system checks the status of the tag, e.g. the electronic circuit was paid for, before enabling the electronic circuit.

REFERENCES:
patent: 3133269 (1964-05-01), Cotsworth
patent: 3165090 (1965-01-01), Smith
patent: 3189000 (1965-06-01), Saliners
patent: 3382322 (1968-05-01), Duerden
patent: 4208630 (1980-06-01), Martinez
patent: 4691801 (1987-09-01), Mann
patent: 4791409 (1988-12-01), Reid
patent: 4827395 (1989-05-01), Anders
patent: 5276728 (1994-01-01), Pagliaroli

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