Communications: electrical – Continuously variable indicating – With meter reading
Patent
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.
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Braun William V.
Moore Morris A.
Gillman James W.
Motorola Inc.
Parker Margaret M.
Roney Edward M.
Yusko Donald J.
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