Radio frequency identification tag device with sensor input
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United States of America Patent
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Apr 13, 2004
Issued Date -
N/A
app pub date -
Mar 30, 1999
filing date -
Mar 30, 1999
priority date (Note) -
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Abstract
A radio frequency identification tag device having a sensor input which modifies a tag data word bitstream read by an interrogator/tag detector. The sensor input may be a switch contact(s), digital and/or analog. The sensor input may be voltage, current, pressure, temperature, resistance, acceleration, moisture, gas and the like. Power from the radio frequency interrogator/tag reader may be used to power the circuits of the radio frequency tag device, which in turn may supply power to any sensor connected thereto.
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