Battery economizing in a communications system
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United States of America Patent
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Mar 13, 2007
Issued Date -
N/A
app pub date -
Sep 1, 2000
filing date -
Sep 2, 1999
priority date (Note) -
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status (Latency Note)
Importance
Abstract
In communications systems such as telemetry systems in which a receiver (34) is periodically energised to receive transmissions from a central station, the receiver includes a power control means (12) for controlling the energisation of the receiver, a circuit (48) for detecting the presence of a carrier, which circuit (48) causes the power control means to de-energise the receiver (34) in the event of carrier not being detected, and a signal quality measuring stage (50) for determining if the demodulated signal is decodable, the stage (50) causing the power control means to de-energise the receiver (34) in the event of the signal quality not being acceptable.
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