发明授权
US07414924B2 Magneto-optical recording medium having watermark for preventing unauthorized copy
有权
具有用于防止未授权复制的水印的磁光记录介质
- 专利标题： Magneto-optical recording medium having watermark for preventing unauthorized copy
- 专利标题（中）： 具有用于防止未授权复制的水印的磁光记录介质
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申请号： US11075601申请日： 2005-03-09
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公开(公告)号： US07414924B2公开(公告)日： 2008-08-19
- 发明人: Mitsuaki Oshima , Shinichi Konishi , Shin-ichi Tanaka , Kenji Koishi , Mitsurou Moriya , Yoshiho Gotoh , Yoshinari Takemura , Norio Miyatake , Motoyoshi Murakami
- 申请人： Mitsuaki Oshima , Shinichi Konishi , Shin-ichi Tanaka , Kenji Koishi , Mitsurou Moriya , Yoshiho Gotoh , Yoshinari Takemura , Norio Miyatake , Motoyoshi Murakami
- 申请人地址： JP Osaka
- 专利权人： Matsushita Electric Industrial Co., Ltd.
- 当前专利权人： Matsushita Electric Industrial Co., Ltd.
- 当前专利权人地址： JP Osaka
- 代理机构： Hamre, Schumann, Mueller & Larson, P.C.
- 优先权： JP8-339304 19961219; JP9-009318 19970122; JP9-259110 19970924
- 主分类号： G11B11/00
- IPC分类号： G11B11/00
摘要：
An optical disk that includes main information and write-once information recorded on the optical disk. The write-once information is recorded as information unique to the optical disk, and the write-once information stores at least watermark production parameters for producing a watermark.