Method and radio frequency identification system for a novel pro

Details Method and radio frequency identification system for a novel pro Method and radio frequency identification system for a novel pro

1997-07-23

1998-10-06

Zimmerman, Brian

Communications: electrical

Continuously variable indicating

With meter reading

455603, H04Q 100

Patent

active

058183485

ABSTRACT:
Reliable communication is provided by a radio frequency identification system comprising at least one of an interrogator (102) and a transponder (104). The interrogator (102) transmits a plurality of interrogator frames (106) and receives at least one of a plurality of transponder frames (114). The transponder (104) transmits the plurality of transponder frames (114) and receives at least one of the plurality of interrogator frames (106). Each frame in the plurality of interrogator frames and the plurality of transponder frames includes an initialization sequence (108 and 116), at least one information sequence of a first predetermined length (110 and 118), and a check sequence of a second predetermined length (112 and 120) for each information sequence.

REFERENCES:
patent: 4691202 (1987-09-01), Denne
patent: 4837568 (1989-06-01), Snaper
patent: 5196846 (1993-03-01), Brockelsby et al.
patent: 5351187 (1994-09-01), Hassett
patent: 5467081 (1995-11-01), Drews

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