Low-power broadcast receiver
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United States of America Patent
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Jan 4, 2011
Grant Date -
Oct 17, 2002
app pub date -
Apr 16, 2001
filing date -
Oct 3, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Broadcast receivers operate in a power-saving standby mode while retaining the ability to receive broadcast program, software, and firmware updates. The most power hungry circuits are deprived of power in the standby mode using a wake-up switch controlled by an update sensor that actively monitors the broadcast channel in the standby mode. If the receiver receives an update-pending indication while in the standby mode, then the wake-up switch provides power to those components needed to receive the update without indicating a power-on condition to the user.
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