LPRF device wake up using wireless tag
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United States of America Patent
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-
Nov 20, 2012
Grant Date -
Jun 10, 2010
app pub date -
Feb 10, 2010
filing date -
Dec 22, 2000
priority date (Note) -
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status (Latency Note)
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Abstract
A wireless transceiver includes: (a) a low power radio frequency (LPRF) communications component capable of powering down to conserve energy and capable of powering up in response to an electronic signal, the LPRF communications component including a transmitter and a first receiver; and (b) a second receiver that is configured to screen a radio frequency broadcast and provide, on the basis of specific data identified therein, the electronic signal to the LPRF communications component in order to power up the LPRF communications component. The second receiver is adapted to draw less current than the LPRF communications component while awaiting receipt of and listening for a radio frequency broadcast.
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