Abstract :
State systems for the encoding of the following magnetic recording codes, with minimum Hamming distance dmin, as indicated, are presented. A R = ½, (1, 4, 3), dmin= 2 code; a R = ½, (0, 3, 3), dmin= 4 code; and a R = 2/4, (0, 3, 2), dmin= 4 code. An encoder and decoder for the (1, 4, 3) code are shown. Minimum Hamming distance aspects of dc free codes, generated by finite state machines, are briefly discussed.
