An optical disk apparatus for recording information of copyright on an optical disk where desired data are recorded by repetition of pits or marks. The apparatus comprises a recording means for recording the copyright information by irradiating a laser beam onto the optical disk in such a manner as to...http://www.google.fr/patents/US6775215?utm_source=gb-gplus-shareBrevet US6775215 - Optical disk apparatus, optical disk recording method, and optical disk
Optical disk apparatus, optical disk recording method, and optical disk
