Electronic tags
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United States of America Patent
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Issued Date -
Dec 11, 2003
app pub date -
Mar 21, 2003
filing date -
Mar 23, 2002
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The present invention discloses an electronic tag comprising electronic circuitry incorporating a microprocessor (44), a non-volatile memory associated with the microprocessor (44) such that the microprocessor (44) can write data to the non-volatile memory, a sensing transducer (54) connected to the microprocessor (44), and an interface (30) for interrogation of the non-volatile memory, the sensing transducer (54). being such as to output an electrical signal in response to an event of a pre-selected type, the microprocessor (44) being programmed to log signals from the sensing transducer (54) to the non-volatile memory to produce a record of the selected event and being arranged to be powered by the electrical output signal from the sensing transducer (54).
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