Digital radio paging communication system

Details Digital radio paging communication system Digital radio paging communication system

1980-10-06

1983-09-06

Caldwell, Sr., John W.

Communications: electrical

Systems

Nonselective paging

34082544, 34082548, 179 2EC, 455 38, G08B 522, H04Q 130

Patent

active

044032129

ABSTRACT:
A paging communication receiver receives carrier waves modulated by a sequence of signals comprising a calling signal, a display information signal and a discriminating signal. The modulated carrier wave is demodulated to retrieve the calling signal, display information signal and discriminating signal. The calling signal is detected and decoded to provide a detection signal, when the discriminating signal represents a calling signal. The detection signal causes a decoding for displaying information when the discriminating signal is the one representing the display information signal.

REFERENCES:
patent: 3846783 (1974-11-01), Apsell et al.
patent: 3944724 (1976-03-01), Kilby et al.
patent: 4091373 (1978-05-01), Nakamura
patent: 4249165 (1981-02-01), Mori
patent: 4263480 (1981-04-01), Levine

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