Remote sensor interface (RSI) stepped wake-up sequence
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United States of America Patent
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Jan 19, 2010
Grant Date -
Dec 7, 2006
app pub date -
Jun 5, 2006
filing date -
Jun 3, 2005
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A transceiver includes a two-way communication component capable of powering down to conserve energy and capable of powering up in response to an electronic signal, the two-way communication component including a transmitter and a first receiver; and a second receiver that is configured to screen a radio frequency broadcast and provide the electronic signal to the two-way communication component in order to power up the two-way wireless communication component. The second receiver is configured to screen the radio frequency broadcast for first criteria, and screen the radio frequency broadcast for second criteria. The electric current may be an order of magnitude larger when screening for the first criteria than the second criteria. Screening also may be performed for third criteria, namely, specific data. The second receiver is adapted to draw substantially less current while awaiting receipt of and listening for a radio frequency broadcast than the two-way wireless communication component.
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