Digital radio pager

Details Digital radio pager Digital radio pager

1979-04-18

1981-02-03

Bookbinder, Marc E.

Communications: electrical

Systems

Nonselective paging

455 38, H04B 116

Patent

active

042491657

ABSTRACT:
A digital radio pager provides for the reception and detection of (1) a preamble signal for synchronizing the pager to the incoming signal, (2) a calling signal comprised of a unique word associated with the particular individual pager, and (3) a display signal representing the caller identification or other data for display. A switch is provided to enable the pager to selectively produce an audio signal either automatically upon the reception of a properly coded calling signal or, when the user does not want to be disturbed, at any particular time after receiving the calling signal. The switch further provides for selective and repeated visual display of the display signal word upon the request of the user.

REFERENCES:
patent: 3114142 (1963-12-01), Bode et al.
patent: 3173128 (1965-03-01), Tatsuzawa
patent: 3768090 (1973-10-01), Williams
patent: 3846783 (1974-11-01), Apsell et al.
patent: 3882466 (1975-05-01), Poorvin
patent: 3996581 (1976-12-01), Brodeur et al.
patent: 4091373 (1978-05-01), Nakamura

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