Battery saver for a paging receiver or the like

Details Battery saver for a paging receiver or the like Battery saver for a paging receiver or the like

H - Electricity

04

B

325/127, 325/72

H04B 1/16 (2006.01) H04Q 7/18 (2006.01)

Patent

CA 1207393

ABSTRACT There is provided a battery saving circuit for use in a portable radio communication apparatus. The circuit comprises a receiver section for receiving a carrier wave which is modulated with a preamble and a subscriber identification signal, a power supply for supplying power to the receiver section in response to a first control signal and a decoder responsive to the output of the receiver section for detecting the received preamble and the received identification signal and selectively providing the first control signal to the power supply. The decoder periodically begins the provision of the first control signal to the power supply means, suspends the provision of the first control signal in response to a second control signal, continues provision of the first control signal in response to a third control signal, immediately produces the second control signal in the absence of the preamble signal, and produces the third control signal for a first predetermined period of time in response to detection of the preamble signal. The invention improves battery saving efficiency and avoids erroneous operation due to noise.

429101

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