New class of (2p)B(2p+1)B DC balanced line codes

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