Battery powered wireless transceiver having LPRF component and second wake up receiver
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United States of America Patent
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-
Apr 24, 2007
Grant Date -
Sep 29, 2005
app pub date -
May 14, 2003
filing date -
Dec 22, 2000
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A wireless transceiver includes a low power radio frequency (LPRF) component that powers down to conserve energy and powers up in response to a signal; and a second receiver that provides the signal in response to receipt of a radio frequency broadcast. The broadcast is targeted to activate particular transceivers by including, in the broadcasts, identifications such as class designations, in which case the transceivers power up and form networks. A transceiver may include one or more identifications and may include a unique identification of the transceiver itself. The LPRF component may be a Bluetooth radio, but the overall transceiver itself only draws about 10 to 15 .mu.A while actively awaiting and screening for a targeted broadcast.
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