In an optical disk recording method of recording data onto a recordable optical disk which includes a data zone where data is recorded and a management data zone where management data indicating the recorded part of the data zone is recorded, an extended management data zone in which the management data...http://www.google.de/patents/US7643394?utm_source=gb-gplus-sharePatent US7643394 - Optical disk, optical disk recording method, and optical disk recording apparatus
