发明名称 |
Information storage medium evaluation method, information storage medium evaluation apparatus, information storage medium, information reproduction apparatus, information reproduction method, and information recording method |
摘要 |
An information storage medium according to an aspect of this invention has an information storage area for storing information, and a wobbled track which is used to guide a light beam on the information storage area, and is wobbled in correspondence with a frequency, a phase of which is modulated at predetermined timings to reflect predetermined information. The wobbled track is formed so that an evaluation result based on the frequency characteristics of a squared reproduction signal obtained by squaring a reproduction signal corresponding to the wobbled track, obtained from the reflected light of a light beam with which the wobbled track is irradiated, meets a predetermined evaluation measure.
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申请公布号 |
US2004240344(A1) |
申请公布日期 |
2004.12.02 |
申请号 |
US20040797128 |
申请日期 |
2004.03.11 |
申请人 |
OGAWA AKIHITO;NAGAI YUJI |
发明人 |
OGAWA AKIHITO;NAGAI YUJI |
分类号 |
G11B7/007;G11B7/24;G11B7/26;(IPC1-7):G11B5/09 |
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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