Optical disk

Abstract

Abstract PURPOSE:To improve the reliability in a light protection and to co-exist a ROM part and a RAM part on a sheet of a disk by pre-recording a software program, basic data, etc., unrewritably on a disk. CONSTITUTION:The basic data, etc., necessary for the software program for handling the data to be recorded in advance and for the program execution are recorded so as to unable to erase and rewrite with the writing and device of this disk on the ROM part 5 in the prescribed zone of an optical disk and the light protection reliability is made higher. The ROM part and the RAM part are used as well with a sheet of a disk and the handling of the disk is made convenient.

Inventors

• 👤 Yoichiro Sako
• 👤 曜一郎 佐古
• 👤 Tamotsu Yamagami
• 👤 保 山上
• 👤 Masayuki Obata
• 👤 政行 小幡

Bibliographic Details