HP Labs Technical Reports

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A New class of (2p)B(2p+1)B d.c. balanced line codes

Deliot, Eric; Coles Alistair N.


Keyword(s): block code; d.c. balance; 4B5B

Abstract: A block code of the form (2p)B(2p+1)B cannot provide both d.c. balance and redundant codewords for control signals. We describe a new set of additional rules that may be applied to groups of consecutive codewords in order to provide both d.c. balance and a large control space, and show how 256 10-bit control symbols may be achieved with a d.c. balanced 4B5B code

4 Pages

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