A recording medium storing a write protection information, and a write protection method for protecting data recorded on a recordable and/or rewritable disc from unwanted overwriting or erasing. In order for write protection of a disc in a bare state that is usually used in a cartridge having a recognition...http://www.google.co.uk/patents/US6724705?utm_source=gb-gplus-sharePatent US6724705 - Recording medium for storing write protection information and write protection method thereof
