Optical disk, method for recording and reproducing write-once information on and from optical disk, optical disk reproducing device, optical disk recording and reproducing device, device for recording write-once information on optical disk, and optical disk recording device
作者： Norio Miyatake , Yoshinari Takemura , Mitsurou Moriya , Shinichi Konishi , Mitsuaki Oshima
DOI:
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摘要: An optical disk storing write-once information usable for protecting the copyright of software by preventing duplication, unauthorized use, etc., software. In disk, a recording layer (213) is formed on substrate (211) with dielectric (212) inbetween. Then, an intermediate (214) and reflecting (215) are successively laminated upon (213), overcoat (216) surface (215). A plurality BCA (one identification systems) sections (220a 220b) recorded in circumferential direction (213). The lowering vertical magnetic anisotropy At time or reproduction, detected from differential signals.
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