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 _

1983-05-24

1985-03-19

Ng, Jin F.

Telecommunications

Receiver or analog modulated signal frequency converter

With particular receiver circuit

455228, 455 38, 34082544, H04B 504, H04B 116

Patent

active

045063869

ABSTRACT:
A battery saving circuit for use in a portable radio communication apparatus adapted to receive a communication signal which includes a preamble and identification codes. The apparatus includes a receiver section, a waveform shaper section, a decoder section and a power supply. The battery saving circuit, forming a portion of the decoder section, periodically generates a first control signal which causes the power supply to be electrically connected to the receiver and waveform shaper sections. A second control signal is generated to disconnect the receiver and waveform shaper sections from the power supply when, during an assigned time period, the preamble code is not detected. A third control signal is generated to maintain electrical connection between the power supply and the receiver and waveform shaper sections for a selected period of time after the preamble is detected.

REFERENCES:
patent: 3824548 (1974-07-01), Sullivan et al.
patent: 4181893 (1980-01-01), Ehmke
patent: 4194153 (1980-03-01), Masaki et al.
patent: 4340973 (1982-07-01), Umetsu
patent: 4353065 (1982-10-01), Mori
patent: 4419765 (1983-12-01), Wycoff et al.
patent: 4437095 (1984-03-01), Akahori et al.

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