Minimum voltage radio frequency indentification

Details Minimum voltage radio frequency indentification Minimum voltage radio frequency indentification

1997-12-10

1999-08-31

Zimmerman, Brian

Communications: electrical

Continuously variable indicating

With meter reading

34082534, 34082563, 3405721, 3405722, 3405725, 361 56, H02H 900

Patent

active

059459204

ABSTRACT:
A radio frequency identification device (RFID) which permits various read and write operations at various voltage levels. Certain read operations are permitted as soon as the voltage level in the RFID is sufficient for the circuitry to switch. Errors during such operations are accounted for by retry attempts. Security related operations require higher voltage levels which ensure higher reliability in such operations.

REFERENCES:
patent: 4333072 (1982-06-01), Beigel
patent: 4918416 (1990-04-01), Walton et al.
patent: 5214409 (1993-05-01), Beigel
patent: 5280435 (1994-01-01), Weisshaupt et al.
patent: 5815355 (1998-09-01), Dawes

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