Method and apparatus for remotely identifying an electronically coded article
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United States of America Patent
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Mar 16, 1999
Grant Date -
N/A
app pub date -
Dec 10, 1997
filing date -
Dec 10, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Apparatus, and a concomitant method of operation for the apparatus, for responding to an interrogation signal transmitted by a remotely located interrogator comprising: a demodulator for demodulating the interrogation signal; a signal processor, coupled to the demodulator, for interpreting a set up instruction contained in the interrogation signal and for initiating a counter to count cycles of a carrier wave signal contained in the interrogation signal; and a modulator, coupled to the signal processor, for transmitting a pulse when the signal processor indicates that the counter has attained a count value that matches a codeword stored in the signal processor.
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