To provide write protection of a disc in a bare state that is usually used in a cartridge having a recognition switch for write protection, such as a DVD-RAM, write protection information is recorded in a Lead-in area, a Lead-out area or a recording information area other than a user data area of the...http://www.google.fr/patents/US8139458?utm_source=gb-gplus-shareBrevet US8139458 - Recording medium for storing write protection information and write protection method thereof
Recording medium for storing write protection information and write ...
