发明名称 |
Methods and apparatus for reproducing data recorded on an optical recording medium |
摘要 |
An optical recording medium on which information data is to be recorded and on which an n-th recording track is located at a distance from the (n-1)th recording track preceding the n-th recording track in a recording region which is narrower than the diameter of a spot of a light beam radiated on the recording area, with recording data obtained on logical processing with recording data recorded on the (n-1)th recording track being recorded on the n-th recording track for increasing the storage capacity of information data, is disclosed. A return beam of a light beam radiated across two neighboring recording tracks on the optical recording medium is detected by a detector having first and second light receiving sections having a boundary line extending parallel to the recording track of the optical recording medium for reading out the information recorded on the optical recording medium based on the level of a sum or difference signal of the output signals of the first and second light receiving sections.
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申请公布号 |
US5633854(A) |
申请公布日期 |
1997.05.27 |
申请号 |
US19940291612 |
申请日期 |
1994.08.17 |
申请人 |
SONY CORPORATION |
发明人 |
HORIMAI, HIDEYOSHI;FUJITA, GORO |
分类号 |
G11B7/0045;G11B7/005;G11B7/007;G11B7/09;G11B7/14;G11B7/26;G11B20/14;H03M5/14;(IPC1-7):G11B7/00 |
主分类号 |
G11B7/0045 |
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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