Method and facility for decoding a biphase-code and application

Details Method and facility for decoding a biphase-code and application Method and facility for decoding a biphase-code and application

1984-02-02

1984-08-28

Griffin, Robert L.

Pulse or digital communications

Repeaters

Testing

360 42, G11B 509

Patent

active

044687915

ABSTRACT:
In a method for decoding a received biphase-coded signal, a signal edge (2) is detected and its polarity determined in intervals of two periods (2T) for reconstructing the transmitted data. This allows the transmission rate of the signals to be increased up to the maximum frequency limit of the logic family used. By this means data sets (B1-BN), for example in biphase-level code, can be transmitted with start characters (A) optimized for minimum time loss. A decoder can be implemented with very simple monostable multivibrators and a small number of gates. Since sampling controlled by means of a digital counter is not required, the transmission rate can be increased by a factor of 8 to 32.

REFERENCES:
patent: 3727202 (1973-04-01), Fort
patent: 3831193 (1974-08-01), McSweeney et al.
patent: 3940790 (1976-02-01), Conroy et al.
patent: 3947876 (1976-03-01), Gray
patent: 3949394 (1976-04-01), Kennedy
patent: 3979746 (1976-09-01), Jarrett

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