Symbols communication system

Details Symbols communication system Symbols communication system

1979-11-14

1981-12-15

Safourek, Benedict V.

Pulse or digital communications

Repeaters

Testing

34082575, 375113, 375115, H04L 2710

Patent

active

043063080

ABSTRACT:
A data communications system for transmitting and receiving 64 different audio-frequency signals representing 64 respective alpha-numeric code symbols. A synchronizing signal consists of three time-spaced bursts where each burst consists of three audio-frequency signals. A following information signal consists of a three time-spaced message bursts where each burst consists of twenty audio-frequency signals, all three of the message bursts containing the same audio-frequency signals but in different orders. A receiver includes synchronizer means to recognize the predetermined synchronizing signal, and decoder means enabled and synchronized by the synchronizer means to decode the information signal. The audio-frequency signals may be 64 different fixed-frequency tones, or may be 64 differently-changing signals such as may be produced by unidirectional phase shift keying by 64 different pseudo-random number codes.

REFERENCES:
patent: 2771545 (1956-11-01), Doelz
patent: 3579110 (1971-05-01), Hauber
patent: 3582895 (1971-06-01), Abramson et al.
patent: 3715726 (1973-02-01), Wallin et al.
patent: 3810019 (1974-05-01), Miller
patent: 3944742 (1976-03-01), Cunningham
patent: 3990071 (1976-11-01), Ito et al.
patent: 4011511 (1977-03-01), Chang
patent: 4020449 (1977-04-01), Ito et al.
patent: 4114142 (1978-09-01), Wycoff et al.

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