Receiver with constant battery saving duty cycle

Details Receiver with constant battery saving duty cycle Receiver with constant battery saving duty cycle

1992-05-26

1994-10-11

Urban, Edward F.

Telecommunications

Transmitter and receiver at separate stations

455229, 455343, H04B 116

Patent

active

053555180

ABSTRACT:
A receiver (100) for receiving a carrier signal to produce a recovered signal provides increased battery savings. The receiver (100) includes a detector (10) for detecting the absence of the carrier signal and a detector for detecting the presence of a valid coded squelch signal (87). The receiver (100)is placed in a first battery saver mode (41) having a duty cycle of a first ON time period and a first OFF time period, in response to the detected absence of the carrier signal. On the other hand, if the presence of the carrier signal is detected, without the presence of a valid coded squelch signal, the receiver (100) is placed in a second battery saver mode (42). The second battery saver mode has the same duty cycle as the first battery saver mode, but the second battery saver mode has longer ON and OFF time periods than the first time periods.

REFERENCES:
patent: 4385398 (1983-05-01), Wycoff et al.
patent: 4419765 (1983-12-01), Wycoff et al.
patent: 4964121 (1990-10-01), Moore
patent: 5109530 (1992-04-01), Stengel
patent: 5193211 (1993-03-01), Nobusawa

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