发明名称 |
Optical disc having oscillating lands and grooves |
摘要 |
In an optical disc, an ID field contains a plurality of address information, and is preliminarily recorded in convex and concave signals, and is composed of two sets offset by about 1/2 track pitch toward the internal or external track direction adjacent to the guide track, an information recording field is composed of grooves and lands oscillating at a single frequency in the radial direction, and the grooves and lands alternate in every revolution of the guide track. When w bits of information are included in one period of oscillation, an information unrecorded field between the ID field and information recording field is arranged to have a length of w/10 bits or more and/or w bits or less, and therefore, when recording continuous information data such as video data, it is possible to record continuously by generating a clock securely from the oscillating signal, and moreover, the format efficiency is improved, so that a format of a larger capacity is achieved. <IMAGE> |
申请公布号 |
EP0973157(A3) |
申请公布日期 |
2000.02.02 |
申请号 |
EP19990119781 |
申请日期 |
1997.10.24 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
ISHIDA, TAKASHI;TANAKA, SHIN-ICHI;MUTOH, AKIRA;TAKEMURA, YOSHINARI;OHARA, SHUNJI;SATOH, ISAO |
分类号 |
G11B7/007;G11B7/09;G11B27/19;G11B27/30 |
主分类号 |
G11B7/007 |
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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