Patent ID: 6370098
Filing Date: 2002-04-09
Classification: G11B,H03M

Abstract:
A method of converting channel bits of 14 bits long modulated by an EFM modulation scheme to address bits, comprising the steps of:(a) dividing a symbol of 14 bits into a first consecutive bit stream and a second consecutive bit stream; (b) associating patterns of â€œmâ€  bits with a plurality of patterns represented by said first consecutive bit stream other than those patterns being unable to exist under a minimum run-length condition for converting said first consecutive bit stream to said â€œmâ€  bits, and associating patterns of â€œnâ€  bits with a plurality of patterns represented by said second consecutive bit stream other than those patterns being unable to exist under said minimum run-length condition for converting said second consecutive bit stream to said â€œnâ€  bits; (c) setting a specific single bit of said â€œnâ€  bits; (d) removing said specific single bit set in said step (c) from said â€œnâ€  bits for deriving â€œnâˆ’1â€  bits; (e) converting said â€œnâˆ’1â€  bits to â€œmâ€  bits; and (f) combining said specific single bit set in said step (c), said â€œmâ€  bits converted in said step (b) and said â€œmâ€  bits converted in said step (e) for generating said address bits.