Communications: electrical – Continuously variable indicating – With meter reading
Patent
1987-01-12
1989-06-13
Caldwell, Sr., John W.
Communications: electrical
Continuously variable indicating
With meter reading
455343, 371 47, H04Q 700
Patent
active
048396397
ABSTRACT:
A paging receiver includes an improved battery saving circuit which reduces battery usage by powering the radio section and the waveform shaping circuitry only during intervals which include address codewords specific to the given receiver group. Power is not supplied during intervals containing synchronization code signals other than during the first such interval directly following the preamble code. Upon detecting a preamble code during said intervals, power is supplied continuously for a time period sufficient to encompass the synchronization code interval.
REFERENCES:
patent: 3769593 (1973-10-01), Williams
patent: 4419765 (1983-12-01), Wycoff et al.
patent: 4506262 (1985-03-01), Vance et al.
patent: 4523332 (1985-06-01), Mori
patent: 4652875 (1987-03-01), Waki
patent: 4663623 (1987-05-01), Lax et al.
Oyagi Takashi
Sato Toshifumi
Caldwell Sr. John W.
Holloway III Edwin C.
NEC Corporation
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