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公开(公告)号：EP3413313B1
公开(公告)日：2022-03-02
申请号：EP17747163.8
申请日：2017-01-12
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公开(公告)号：EP3413313A1
公开(公告)日：2018-12-12
申请号：EP17747163.8
申请日：2017-01-12
申请人： Sony Corporation
CPC分类号： G11B7/005 , G11B7/131 , G11B7/133 , G11B20/10009 , G11B20/10046
摘要： Provided are a device and a method which are capable of performing crosstalk-removed high-quality data reproduction from a high-density recording type optical disc. The device includes a photo detector that outputs a readout signal from a reproduction track of an information recording disc, an adj acent track reproduction binary signal supply unit that outputs a binary signal (binary data) which is a reproduction signal of an adjacent track of the reproduction track, a multi-input adaptive equalizer that includes an equalizer unit that receives the readout signal from the reproduction track and an adjacent track reproduction binary signal and outputs an equalization signal by an adaptive equalization process based on an input signal, and a binarization processing unit that executes a binarization process based on the equalization signal and generates a reproduction signal of the reproduction track.
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公开(公告)号：EP2221818B1
公开(公告)日：2017-06-21
申请号：EP08854708.8
申请日：2008-08-28
发明人： NAKAI, Kenya
CPC分类号： G11B7/005 , G11B7/00736 , G11B7/131 , G11B7/133 , G11B7/24
摘要： A recoding playback apparatus and an optical disk are provided that allows reduction of a low frequency noise at a time of playback of a super resolution optical disk including small record marks whose size is below the diffractive limitation, to enhance quality of a playback signal. [Means for solution] The reflective beams from the optical disk are received by dividing into outer portion beams and a center portion beam, and a playback signal is created by combining such beams based on respective different gains. Based on received amounts of light or amounts of low frequency noise in respective light receiving regions, adjustment or determination of gain values is made, or the optical head apparatus is optically adjusted, whereby the low frequency noise is optimally suppressed. Further, a specific region is provided on the optical disk for making the foregoing adjustment.
摘要翻译： 提供了一种记录重放装置和光盘，其允许在包括尺寸小于衍射限制的小记录标记的超分辨率光盘的重放时降低低频噪声，以提高重放信号的质量。 [解决方法]来自光盘的反射光束通过分成外部部分光束和中心部分光束而被接收，并且通过基于各自不同的增益组合这些光束来产生重放信号。 基于在各个光接收区域中接收到的光量或低频噪声量，进行增益值的调整或确定，或光学头部设备被光学调整，由此最佳地抑制低频噪声。 此外，在光盘上提供特定区域以进行上述调整。
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