| 摘要 |
Disclosed herein is an encoding apparatus which combines an RLL code word and an error correction code word, with an interleaving technique when encoding, including: an error correction encoding section; an interleaving section; and an RLL encoding section, wherein, if an address i (i is an integer satisfying relations 0≦̸i<k×m) is assigned to each symbol of k×m error correction code words and xij is denoting the number of symbols included in n symbols of a jth (j is an integer satisfying relations 0≦̸j<m) code word of m error correction code words to serve as symbols corresponding to the address i of an information word of an RLL code, for any j, the interleaving section interleaves a series inside an information word of the RLL code word so that the following relations are satisfied: ∑ i ⁢ x ij = n ⁢ ⁢ and ⁢ ⁢ x ij > 0. |
