发明名称 |
Optical disc with dispersed wobble sections, manufacturing method and recording and reproducing method |
摘要 |
<p>An optical disk has address recording sections each of which has a wobbled part of one of side walls of a groove. Each address recording section is formed by providing convexes of a groove in an adjacent land so as to widen the groove. With the wobbles thus provided in a concavo-convex form, address information is recorded. Besides, the address recording sections thus provided in the grooves are linearly disposed in radial directions of the optical disk. By thus arranging the optical disk on whose grooves and/or lands information is recorded, mixing of wobble frequency components in reproduced information signals does not occur, the sector method is applicable to the optical disk, and information signals of high quality can be obtained. <IMAGE></p> |
申请公布号 |
EP0818778(A2) |
申请公布日期 |
1998.01.14 |
申请号 |
EP19970111464 |
申请日期 |
1997.07.07 |
申请人 |
SHARP KABUSHIKI KAISHA |
发明人 |
INUI, TETSUYA;SATO, HIDEAKI;NAKAYAMA, JUNICHIRO;IKETANI, NAOYASU;MIEDA, MICHINOBU;MURAKAMI, YOSHITERU;HIROKANE, JUNJI;TAKAHASHI, AKIRA |
分类号 |
G11B7/005;G11B7/007;G11B7/09;G11B7/24;G11B7/26;G11B11/105;(IPC1-7):G11B7/09 |
主分类号 |
G11B7/005 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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