Radio paging system with different transmission speeds and recei

Details Radio paging system with different transmission speeds and recei Radio paging system with different transmission speeds and recei

1991-04-04

1993-08-17

Weldon, Ulysses

Communications: electrical

Continuously variable indicating

With meter reading

371 42, G08B 522

Patent

active

052373207

ABSTRACT:
A paging system includes a receiver adapted for receiving paging signals at a fixed bit rate of N.multidot.R where N is an integer and R is a basic bit rate. A transmitter transmits at the N.multidot.R bit rate, N being adjustable to accommodate any signal for any particular receiver. The transmitter bit rate is selected according to serial data received from a telephone exchange with a message to be transmitted. The transmitter has a degree indicating system producing a first signal representative of a degree N when it receives a signal which is representative of a bit rate N.multidot.R. It has interleaving means for N-degree interleaving of input data having the bit rate N.multidot.R, in response to the first signal, to produce an interleaved signal; and transmitting means for transmitting said interleaved signal. The receiver has means for receiving a signal whose bit rate is N.multidot.R bit rate indicating means for outputting a first signal which is representative of N; de-interleaving means for N-degree de-interleaving the received signal, in response to the first signal, to produce a de-interleaved signal; and deciding means for deciding whether or not a paging address number, which may be included in the de-interleaved signal, is assigned to the receiver. Alarm means may produce an audible alarm in response to an output of the deciding means.

REFERENCES:
patent: 3932824 (1976-01-01), Wycoff
patent: 4312070 (1982-01-01), Coombes et al.
patent: 4313033 (1982-01-01), Walker et al.
patent: 4369443 (1983-01-01), Giallanza et al.
patent: 4394642 (1983-07-01), Currie et al.
patent: 4427980 (1984-01-01), Fennell et al.
patent: 4644345 (1987-02-01), Wycoff

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