Randomization of transmit time
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United States of America Patent
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-
Oct 2, 2001
Grant Date -
N/A
app pub date -
Sep 23, 1999
filing date -
Sep 23, 1999
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The present invention discloses an apparatus for randomizing the transmit time in a tag RFID communication system. The CRC calculation is implemented through the use of software stored in the system microprocessor and the calculations vary upon a plurality of dynamic inputs including temperature and motion of the tag. The tag apparatus of the present invention includes temperature and motion monitors for monitoring the environmental conditions of the tag. A microprocessor in communication with the sensor calculates the next pseudo-random transmission based upon the dynamic inputs. A transmitter transmits a signal to the system monitor.
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