A recording format on a recording medium comprises a data portion (4) in which a data train should be recorded. The data portion (4) comprises a user data portion (44 and 47), a check data portion (45) and resynchronizing pattern portions (46). The data train is divided into m or 4 code words, each code...http://www.google.co.uk/patents/US4774701?utm_source=gb-gplus-sharePatent US4774701 - Data recording method with improved synchronization recovery
