Transfer function system for determining an identifier on a...

Details Transfer function system for determining an identifier on a... Transfer function system for determining an identifier on a...

2005-10-25

2005-10-25

Trieu, Van T. (Department: 2636)

Communications: electrical

Condition responsive indicating system

Specific condition

C340S572700, C340S010100, C310S31300R

Reexamination Certificate

active

06958696

ABSTRACT:
A transfer function system for determining an identifier on a surface acoustic wave (SAW) identification tag and a method of operating the same. In one embodiment the system provides for (1) generating a radio frequency (RF) interrogation signal that causes a transducer located on a piezoelectric substrate to produce an initial acoustic pulse that reflects off of a plurality of reflectors arranged according to time and phase position on the substrate to yield response acoustic pulses, the transducer generating an RF response signal from the response acoustic pulses; and (2) determining the identifier by decoding the RF response signal in view of predefined time, phase and amplitude parameters.

REFERENCES:
patent: 5734326 (1998-03-01), Skudera, Jr.
patent: 5821425 (1998-10-01), Mariani et al.
patent: 6407695 (2002-06-01), Stierlin et al.
patent: 6433671 (2002-08-01), Nysen
patent: 6455979 (2002-09-01), Reindl et al.
patent: 6633226 (2003-10-01), Nysen

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