Communications: electrical – Continuously variable indicating – With meter reading
Patent
1983-08-10
1987-02-17
Weldon, Ulysses
Communications: electrical
Continuously variable indicating
With meter reading
34082544, 455 34, 455 54, 455 56, 379 57, H01H 6700, G08B 522, H04Q 700, H04B 700
Patent
active
046443479
ABSTRACT:
In the preferred embodiment the multiple frequency receiver comprises a decoder responsive to a transmitted coded message signal having a special code for designating that the message is being sent on the local frequency and which is also responsive to the absence of the special code which indicates that the signals are being transmitted on a designated nationwide frequency. The decoder includes a microprocessor which generates an output to turn on the local frequency channel element so that the pager may receive the local frequency when the special code is detected and generates a second output to turn-on a nationwide frequency channel element so that the receiver can receive a nationwide frequency when the special code is absent. This enables the pager user to transfer from his local city to another city without having to manually adjust the pager.
REFERENCES:
patent: 3696297 (1972-10-01), Otero
patent: 4392022 (1983-07-01), Carlson
patent: 4392242 (1983-07-01), Kai
patent: 4399555 (1983-08-01), MacDonald et al.
BPR 2000 Series Display Publication No. 68P81032C70-0, copyright 1982, by Motorola, Inc.
"A Guide to the Golay Sequential Code (GSC)" Publication No. R8-1-67 copyright 1982, Motorola, Inc.
"Selective Signalling for Portable Applications" Nelson, 28th IEEE Vehicular Technology Conference, Denver, Colo., Mar. 22-24, 1978.
Dimension 1000 Binary GSC Radio Pager Theory/Maintenance Manual Publication No. 68P81025C80-0, copyright 1983, by Motorola, Inc.
Leonard Jerome C.
Lucas Alfred R.
Downey Joseph T.
Motorola Inc.
Sarli Anthony B.
Smith Ralph
Southard Donald B.
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