Battery-saving arrangement for pagers

Details Battery-saving arrangement for pagers Battery-saving arrangement for pagers

1981-12-04

1983-08-09

Yusko, Donald J.

Communications: electrical

Continuously variable indicating

With meter reading

179 2EC, H04B 504, H04Q 700

Patent

active

043981925

ABSTRACT:
A pager or other selectively-addressed electronic device powered by a small power cell operates in four different modes and at two power levels, depending on signals received and a timing sequence. The device can stay active continuously, be activated at intervals or remain in a powered-down state. The address code assigned to a particular device would be transmitted at a predetermined time interval following a sync signal, thus the device can be powered-down until the approximate time period in which its address code could be transmitted. The system provides increased channel efficiency since information codes are superimposed on actual address codes, and there is no dead time in a channel while there are address codes waiting to be transmitted. The system is particularly well adapted to time multiplexing.

REFERENCES:
patent: 3582896 (1971-06-01), Silber
patent: 3725864 (1973-04-01), Clark et al.
patent: 3787627 (1974-01-01), Newton et al.
patent: 3790717 (1975-02-01), Abramson et al.
patent: 3919483 (1975-11-01), Gindi et al.
patent: 4047162 (1977-09-01), Dorey et al.
patent: 4100533 (1978-07-01), Napolitano et al.
patent: 4138735 (1979-02-01), Allocca
patent: 4178476 (1979-12-01), Frost
patent: 4194153 (1980-03-01), Masaki et al.

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