发明名称 |
Holographic recording/reproducing apparatus having relative speed controller and method |
摘要 |
A holographic recording and reproducing apparatus comprises: a pickup for moving an objective lens that focuses a coherent light beam along a recording track on a holographic recording medium and for detecting reflected light from the recording track to perform focus- and tracking-servo control; a relative velocity determination unit for determining a relative velocity of a converging position of the objective lens with respect to the holographic recording medium; a driving unit for changing a relative position of the objective lens with respect to an optical path of the coherent light beam so as to make the relative velocity fall within a predetermined range at least during a predetermined period; and a control unit for performing recording or reproduction for a recording layer during the predetermined period. The holographic recording medium includes a plurality of markers used for positioning an optical interference pattern of the coherent light beam.
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申请公布号 |
US2008002553(A1) |
申请公布日期 |
2008.01.03 |
申请号 |
US20070896402 |
申请日期 |
2007.08.31 |
申请人 |
PIONEER CORPORATION |
发明人 |
TACHIBANA AKIHIRO;TANAKA SATORU;ITOH YOSHIHISA;KUBOTA YOSHIHISA;KURODA KAZUO;SUGIURA SATOSHI |
分类号 |
G11B7/00;G11B7/0065;G11B7/09;G11B7/135 |
主分类号 |
G11B7/00 |
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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