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公开(公告)号：US20150302883A1
公开(公告)日：2015-10-22
申请号：US14403460
申请日：2012-05-28
CPC分类号： G11B7/013 , G11B7/005 , G11B2007/0009 , G11B2007/0013
摘要： When a simple magnification optical system is used in reproduction of a recording medium in which a large number of minute modified regions are three-dimensionally formed inside solid matter, contrast is insufficient and interlayer crosstalk is increased, and therefore, it is impossible to take a sufficient S/N ratio. Provided is a recording medium in which at least one layer is configured by a set of two adjacent sub-layers, and dots on a sub-layer correspond to a recording data ‘1’ and dots on the other sub-layer correspond to ‘0’. These data are played back.
摘要翻译： 当简单放大光学系统用于在固体物质内三维地形成大量微小修改区域的记录介质的再现时，对比度不足，层间串扰增加，因此不可能 充足的S / N比。 提供了一种记录介质，其中由一组两个相邻的子层构成至少一个层，子层上的点对应于记录数据'1'，另一个子层上的点对应于'0 '。 播放这些数据。
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公开(公告)号：US08194523B2
公开(公告)日：2012-06-05
申请号：US12785514
申请日：2010-05-24
申请人： Manabu Shiozawa
发明人： Manabu Shiozawa
IPC分类号： G11B7/00
CPC分类号： G11B7/1353 , G11B7/0903 , G11B7/0906 , G11B7/1263
摘要： An optical disc apparatus includes a light source for emitting laser light, a light source drive unit for driving said light source, an optical element for splitting the laser light into a plurality of light fluxes, an optical element drive unit for controlling the optical element, an element for focusing the laser light onto the optical disc, and a detection unit for detecting the laser light reflected by the optical disc. Reproduction of the optical disc is performed by switching effectiveness and ineffectiveness of a function of splitting the light flux of the optical element, and adjustment of an outgoing laser power is performed.
摘要翻译： 一种光盘装置，包括用于发射激光的光源，用于驱动所述光源的光源驱动单元，用于将激光分成多个光束的光学元件，用于控制光学元件的光学元件驱动单元， 用于将激光聚焦到光盘上的元件以及用于检测由光盘反射的激光的检测单元。 通过切换光学元件的光通量的功能的切换有效性和无效性来执行光盘的再现，并且执行输出激光功率的调整。
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公开(公告)号：US20110211432A1
公开(公告)日：2011-09-01
申请号：US12971936
申请日：2010-12-17
申请人： Shinsuke IZAWA , Manabu Shiozawa
发明人： Shinsuke IZAWA , Manabu Shiozawa
IPC分类号： G11B7/12
CPC分类号： G11B7/08511 , G11B2007/0013
摘要： The invention provides an optical disc apparatus which prevents that a laser beam whose power is set at a read power level causes erroneous data recording or deletion. The optical disc apparatus includes an emission controller which controls an amount of an electrical current that a current supply portion supplies to a laser diode in order to control a level of emission power at which the laser diode emits the laser beam. The emission controller has a function to set levels of the emission power at the following transition processings: a transition processing after a read processing and before a write processing, a transition processing after a write processing and before a read processing, a transition processing between two read processings for respective areas, and a transition processing between two write processings for respective areas.
摘要翻译： 本发明提供一种光盘装置，其防止功率设定在读取功率电平的激光束导致错误的数据记录或删除。 光盘装置包括发射控制器，其控制电流供应部分向激光二极管提供的电流量，以便控制激光二极管发射激光束的发射功率的水平。 发射控制器具有在以下转换处理中设置发射功率电平的功能：在读取处理之后和写入处理之前的转换处理，写入处理之后和读取处理之前的转换处理，两个 对各个区域的读取处理以及针对各个区域的两个写入处理之间的转换处理。
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公开(公告)号：US07965590B2
公开(公告)日：2011-06-21
申请号：US12057744
申请日：2008-03-28
申请人： Manabu Shiozawa , Takahiro Kurokawa
发明人： Manabu Shiozawa , Takahiro Kurokawa
IPC分类号： G11B7/135
CPC分类号： G11B7/094
摘要： An optical disc apparatus includes a laser diode for emitting a laser light, a beam splitter for dividing the laser light into a main beam and sub beam, a main photodetector for detecting the main beam to output a main push-pull signal, a sub photodetector for detecting the sub beam to output a sub push-pull signal, and a subtracter for calculating the main and sub push-pull signals to output a differential push-pull signal, in which an amplification degree of the sub push-pull signal is adjusted so that a DC offset on the differential push-pull signal is adjusted, even in the case where a laser intensity is varied.
摘要翻译： 一种光盘装置，包括用于发射激光的激光二极管，用于将激光分为主光束和副光束的分束器，用于检测主光束以输出主推挽信号的主光检测器，子光检测器 用于检测子波以输出副推挽信号;以及减法器，用于计算主和副推挽信号以输出差分推挽信号，其中调整副推挽信号的放大度 使得即使在激光强度变化的情况下也可以调节差分推挽信号上的DC偏移。
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公开(公告)号：US20100202259A1
公开(公告)日：2010-08-12
申请号：US12622156
申请日：2009-11-19
申请人： Manabu SHIOZAWA
发明人： Manabu SHIOZAWA
IPC分类号： G11B20/10
CPC分类号： G11B7/1267 , G11B7/1263 , G11B2007/0013
摘要： An optical disc apparatus for recording or reproducing on or from an optical disc, comprising a laser light source for emitting a laser beam; a drive portion for driving the laser light source; a detection portion for detecting the emission power of the laser beam; and means for focusing the laser beam onto the optical disc, wherein information is reproduced by a reproducing power varied according to a recording power to obtain reproducing signals having necessary quality while suppressing deterioration of the recording quality due to the reproducing power.
摘要翻译： 一种用于在光盘上记录或从光盘再现的光盘装置，包括用于发射激光束的激光光源; 用于驱动激光光源的驱动部分; 用于检测激光束的发射功率的检测部分; 以及用于将激光束聚焦到光盘上的装置，其中通过根据记录功率变化的再现功率再现信息，以获得具有必要质量的再现信号，同时抑制由再现功率引起的记录质量的劣化。
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公开(公告)号：US07486603B2
公开(公告)日：2009-02-03
申请号：US12183909
申请日：2008-07-31
IPC分类号： G11B5/09
CPC分类号： G11B7/00456 , G11B7/0062
摘要： An optical disk recording method includes the steps of: providing a multi-pulse chain from a recording wave; independently changing the pulse rise timing and pulse fall timing (pulse width) of the first pulse in the multi-pulse chain in accordance with a preceding space length and a recording mark length; changing the pulse rise timing and pulse fall timing (pulse width) in accordance with a following space length and the recording mark length in a predetermined timing or in independence; and in relation to the smallest mark recorded by irradiation with mono pulse, changing the rise timing in accordance with the preceding space length and the recording mark length and the fall timing (pulse width) in accordance with the following space length and recording mark length, compensating various optical disks different in recording material without change of the fundamental waveform.
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公开(公告)号：US20080304375A1
公开(公告)日：2008-12-11
申请号：US12057744
申请日：2008-03-28
申请人： Manabu SHIOZAWA , Takahiro Kurokawa
发明人： Manabu SHIOZAWA , Takahiro Kurokawa
CPC分类号： G11B7/094
摘要： An optical disc apparatus includes a laser diode for emitting a laser light, a beam splitter for dividing the laser light into a main beam and sub beam, a main photodetector for detecting the main beam to output a main push-pull signal, a sub photodetector for detecting the sub beam to output a sub push-pull signal, and a subtracter for calculating the main and sub push-pull signals to output a differential push-pull signal, in which an amplification degree of the sub push-pull signal is adjusted so that a DC offset on the differential push-pull signal is adjusted, even in the case where a laser intensity is varied.
摘要翻译： 一种光盘装置，包括用于发射激光的激光二极管，用于将激光分为主光束和副光束的分束器，用于检测主光束以输出主推挽信号的主光检测器，子光检测器 用于检测子波以输出副推挽信号;以及减法器，用于计算主和副推挽信号以输出差分推挽信号，其中调整副推挽信号的放大度 使得即使在激光强度变化的情况下也可以调节差分推挽信号上的DC偏移。
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公开(公告)号：US20080291796A1
公开(公告)日：2008-11-27
申请号：US12183929
申请日：2008-07-31
IPC分类号： G11B5/00
CPC分类号： G11B7/00456 , G11B7/0062
摘要： An optical disk recording method includes the steps of: providing a multi-pulse chain from a recording wave; independently changing the pulse rise timing and pulse fall timing (pulse width) of the first pulse in the multi-pulse chain in accordance with a preceding space length and a recording mark length; changing the pulse rise timing and pulse fall timing (pulse width) in accordance with a following space length and the recording mark length in a predetermined timing or in independence; and in relation to the smallest mark recorded by irradiation with mono pulse, changing the rise timing in accordance with the preceding space length and the recording mark length and the fall timing (pulse width) in accordance with the following space length and recording mark length, compensating various optical disks different in recording material without change of the fundamental waveform.
摘要翻译： 光盘记录方法包括以下步骤：从记录波提供多脉冲链; 根据先前的空间长度和记录标记长度独立地改变多脉冲链中的第一脉冲的脉冲上升时间和脉冲下降时间（脉冲宽度）; 根据以下空间长度和记录标记长度在预定时间或独立性中改变脉冲上升时间和脉冲下降时间（脉冲宽度）; 并且相对于通过单脉冲照射记录的最小标记，根据以前的空格长度和记录标记长度以及根据以下空格长度和记录标记长度的下降时间（脉冲宽度）来改变上升时间， 补偿记录材料不同的各种光盘，而不改变基波形。
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公开(公告)号：US20080291795A1
公开(公告)日：2008-11-27
申请号：US12183909
申请日：2008-07-31
IPC分类号： G11B5/00
CPC分类号： G11B7/00456 , G11B7/0062
摘要： An optical disk recording method includes the steps of: providing a multi-pulse chain from a recording wave; independently changing the pulse rise timing and pulse fall timing (pulse width) of the first pulse in the multi-pulse chain in accordance with a preceding space length and a recording mark length; changing the pulse rise timing and pulse fall timing (pulse width) in accordance with a following space length and the recording mark length in a predetermined timing or in independence; and in relation to the smallest mark recorded by irradiation with mono pulse, changing the rise timing in accordance with the preceding space length and the recording mark length and the fall timing (pulse width) in accordance with the following space length and recording mark length, compensating various optical disks different in recording material without change of the fundamental waveform.
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公开(公告)号：US20070121446A1
公开(公告)日：2007-05-31
申请号：US11493822
申请日：2006-07-27
申请人： Manabu Shiozawa , Kazutoshi Shigeta
发明人： Manabu Shiozawa , Kazutoshi Shigeta
IPC分类号： G11B19/00
CPC分类号： G11B7/1369 , G11B7/126 , G11B7/1263 , G11B7/128
摘要： The object of this invention is to provide an optical disc apparatus and an optical disc reproducing method that can realize an excellent reproducing operation by suppressing noise in the optical disc apparatus using an optical attenuator. In order to solve this object, a control voltage of the optical attenuator is changed according to reproduction power when reproducing the optical disc and an ambient temperature of the optical attenuator. In addition, the amplitude of a high frequency current for driving a laser diode is changed according to an attenuation factor of the optical attenuator.
摘要翻译： 本发明的目的是提供一种通过使用光衰减器抑制光盘装置中的噪声来实现优异的再现操作的光盘装置和光盘再现方法。 为了解决这个问题，光衰减器的控制电压根据再现光盘的再现功率和光衰减器的环境温度而改变。 此外，用于驱动激光二极管的高频电流的振幅根据光衰减器的衰减系数而改变。
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