Optical recording disk capable of resynchronization in digital encoding and decoding

An optical disk for storing data, comprising:

• a recording surface including first regions for representing digital data that satisfy a (d, k) conversion rule and second regions for representing RESYNC BYTE data including RESYNC BYTES, said second regions being periodically inserted in said first regions, wherein
• each of said RESYNC BYTES includes a RESYNC detection part that violates said (d, k) conversion rule and a bit synchronization part that satisfies said (d, k) conversion rule,
• said digital data and said RESYNC BYTE data are comprised of first type data and second type data such that the number of said first type data in said RESYNC detection part is larger than k, and
• d and k of said (d, k) conversion rule respectively indicate a minimum number and a maximum number of said first type data between two data of said second type data.

A digital coding method for recording data on an optical disk, said method comprising the steps of:

• modulating digital data encoded in accordance with a (d, k) conversion rule for providing modulated data;
• and
• adding RESYNC BYTE data including RESYNC BYTES in said modulated data,
• each of said RESYNC BYTES having a RESYNC detection part which violates said (d, k) conversion rule and a bit synchronization part which satisfies said (d, k) conversion rule,
• said digital data and said RESYNC BYTE data being comprised of first type data and second type data,
• d and k of said (d, k) conversion rule respectively indicating a minimum number and a maximum number of said first type data between two data of said second type data, and
• the number of said first type data in said RESYNC detection part being larger than k.