Method of transmitting information, encoding device for use in t

Details Method of transmitting information, encoding device for use in t Method of transmitting information, encoding device for use in t

1984-12-07

1986-10-28

Safourek, Benedict V.

Pulse or digital communications

Repeaters

Testing

371 56, 340347DD, 375 25, H04L 2549, H03M 714

Patent

active

046203117

ABSTRACT:
A method of converting n-bit information words into m-bit code words, and the other way round, is described. The code words have a limited disparity. For every information word, two code words are assigned to a group of information words, which code words can be derived from one another by inversion. A choice between these two code words is made to limit the digital-sum-value so as to obtain a d.c. free code. In order to obtain a further limitation of the digital-sum-value within the code words, these code words are derived from each other by inversion and reversal.

REFERENCES:
patent: 2957947 (1960-10-01), Bowers
patent: 3349117 (1967-10-01), Cottermole
patent: 3783383 (1974-01-01), Forster et al.
patent: 3911395 (1975-10-01), Koike
patent: 4253185 (1981-02-01), Danielson

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