发明名称 |
OPTICAL MEDIUM REPRODUCTION DEVICE AND OPTICAL MEDIUM REPRODUCTION METHOD |
摘要 |
There is provided an optical medium reproduction device that optically reproduces an optical medium in which a plurality of tracks are provided, the optical medium reproduction device including: a detection unit configured to divide a cross-section of a beam returning from the optical medium into at least one channel corresponding to an outer region in a radial direction, at least one channel corresponding to a region that is different in position in a tangential direction, and a channel corresponding to the other region, and form detection signals of the channels; a multi-input equalizer unit including a plurality of equalizer units to which the detection signals of the plurality of channels are supplied, respectively, the multi-input equalizer unit being configured to calculate outputs of the plurality of equalizer units and output the outputs as an equalized signal in a manner that a phase difference between two of the regions is set to be a predetermined phase difference; and a binarization unit configured to perform a binarization process on the equalized signal to obtain binary data. |
申请公布号 |
US2016218808(A1) |
申请公布日期 |
2016.07.28 |
申请号 |
US201414910396 |
申请日期 |
2014.06.26 |
申请人 |
SONY CORPORATION |
发明人 |
Nishi Noriaki;Saito Kimihiro;Shiraishi Junya |
分类号 |
H04B10/2507;H04L25/03;H04B10/079 |
主分类号 |
H04B10/2507 |
代理机构 |
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代理人 |
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主权项 |
1. An optical medium reproduction device that optically reproduces an optical medium in which a plurality of tracks are provided, the optical medium reproduction device comprising:
a detection unit configured to divide a cross-section of a beam returning from the optical medium into at least one channel corresponding to an outer region in a radial direction, at least one channel corresponding to a region that is different in position in a tangential direction, and a channel corresponding to the other region, and form detection signals of the channels; a multi-input equalizer unit including a plurality of equalizer units to which the detection signals of the plurality of channels are supplied, respectively, the multi-input equalizer unit being configured to calculate outputs of the plurality of equalizer units and output the outputs as an equalized signal in a manner that a phase difference between two of the regions is set to be a predetermined phase difference; and a binarization unit configured to perform a binarization process on the equalized signal to obtain binary data. |
地址 |
Tokyo JP |