Coded data generation or conversion – Digital code to digital code converters – To or from nrz codes
Patent
1999-03-29
2000-12-19
Williams, Howard L.
Coded data generation or conversion
Digital code to digital code converters
To or from nrz codes
375211, H03M 512
Patent
active
061632848
ABSTRACT:
This invention relates to a repeater of a serial digital transmission system. The repeater comprises NRZI/NRZ converter, descrambler, scrambler and NRZ/NRZI converter. Data sent on a coaxial cable is input to a cable equalizer for attenuation characteristic compensation. The NRZI/NRZ converter receives the reception data through D-type flip-flop. Further, the NRZI/NRZ converter converts the reception data from NRZI code to NRZ code. The descrambler descrambles the data obtained by subjecting the reception data to a scrambling process represented by a generating polynomial. The scrambler scrambles the descrambled data output from the descrambler according to a scrambling process represented by the generating polynomial. The NRZ/NRZI converter converts the scrambled data output from the scrambler from NRZ code to NRZI code. A cable driver outputs the data onto the coaxial cable.
REFERENCES:
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patent: 5561714 (1996-10-01), Hershberger
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patent: 5937067 (1999-08-01), Thatcher et al.
patent: 5946355 (1999-08-01), Baker
patent: 6058479 (2000-05-01), S.o slashed.rhaug
Frommer William S.
Sony Corporation
Williams Howard L.
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