Pulse or digital communications – Repeaters – Testing
Patent
1987-07-28
1988-10-04
Griffin, Robert L.
Pulse or digital communications
Repeaters
Testing
375 4, 375 37, H04L 2549
Patent
active
047759844
ABSTRACT:
A synchronous digital cable transmission system comprises a transmitting terminal, intermediate regenerative repeaters and a receiving terminal. The transmitting terminal includes a data scrambler and a 6B/4T type binary-ternary line coder. The receiving terminal and the intermediate regenerated repeaters include a class 1 type n=2 partial response coding type receive signal shaping and filtering unit and a logic device for decrypting binary symbol superpositions resulting from the signal shaping and filtering processes. The receiving terminal also includes a 6B/4T binary-ternary decoder and a descrambler respectively compatible with the coder and the scrambler in the transmitting terminal.
REFERENCES:
patent: 3492578 (1970-01-01), Gerrish et al.
patent: 4087642 (1978-05-01), Jessop et al.
IEEE Transactions on Communications, vol. COM-28, No. 8, Aug. 1980, pp. 1425-1430, IEEE, New York, US; T. Roste et al: "A 140Mbit/s Digital Transmission System for Coaxial Cable-Using Partial Response Class 1 Line Code with Quantized Feedback"; p. 1425, right column, lines 20-47; p. 1426, right column, lines 28-36; p. 1427, left column, lines 25-26.
Jaffre Pierre
Le Mouel Bernard
Robin Jean-Francois
Thepaut Pierre
Alcatel Cit
Griffin Robert L.
Huseman Marianne
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