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公开(公告)号：US08072850B2
公开(公告)日：2011-12-06
申请号：US12355715
申请日：2009-01-16
IPC分类号： G11B7/00
CPC分类号： G11B7/13925 , G11B7/0033 , G11B7/0917 , G11B7/0945 , G11B2007/0013
摘要： A rewritable optical disk apparatus, optical information recording and reproducing apparatus or the like is allowed to automatically and properly adjust the optical system to the optimum focal condition regardless of the readout signal detector's positional error and the residual aberration in the optical system. The spherical aberration and defocus are coarsely adjusted using the amplitude (PP amplitude) of the tracking error signal and then finely adjusted using the amplitude (RF amplitude) of the readout signal. Since the spherical aberration can properly be adjusted, it is possible to raise the reliability of the readout signal.
摘要翻译： 不管读出信号检测器的位置误差和光学系统中的残余像差如何，允许可重写光盘装置，光学信息记录和再现装置等将光学系统自动且适当地调整到最佳焦点状态。 使用跟踪误差信号的振幅（PP振幅）粗略调整球面像差和散焦，然后使用读出信号的振幅（RF幅度）进行微调。 由于可以适当地调节球面像差，所以可以提高读出信号的可靠性。
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公开(公告)号：US20050063259A1
公开(公告)日：2005-03-24
申请号：US10879080
申请日：2004-06-30
CPC分类号： G11B7/13925 , G11B7/0033 , G11B7/0917 , G11B7/0945 , G11B2007/0013
摘要： A rewritable optical disk apparatus, optical information recording and reproducing apparatus or the like is allowed to automatically and properly adjust the optical system to the optimum focal condition regardless of the readout signal detector's positional error and the residual aberration in the optical system. The spherical aberration and defocus are coarsely adjusted using the amplitude (PP amplitude) of the tracking error signal and then finely adjusted using the amplitude (RF amplitude) of the readout signal. Since the spherical aberration can properly be adjusted, it is possible to raise the reliability of the readout signal.
摘要翻译： 不管读出信号检测器的位置误差和光学系统中的残余像差如何，允许可重写光盘装置，光学信息记录和再现装置等将光学系统自动且适当地调整到最佳焦点状态。 使用跟踪误差信号的振幅（PP振幅）粗略调整球面像差和散焦，然后使用读出信号的振幅（RF幅度）进行微调。 由于可以适当地调节球面像差，所以可以提高读出信号的可靠性。
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公开(公告)号：US20090129217A1
公开(公告)日：2009-05-21
申请号：US12355715
申请日：2009-01-16
IPC分类号： G11B7/08
CPC分类号： G11B7/13925 , G11B7/0033 , G11B7/0917 , G11B7/0945 , G11B2007/0013
摘要： A rewritable optical disk apparatus, optical information recording and reproducing apparatus or the like is allowed to automatically and properly adjust the optical system to the optimum focal condition regardless of the readout signal detector's positional error and the residual aberration in the optical system. The spherical aberration and defocus are coarsely adjusted using the amplitude (PP amplitude) of the tracking error signal and then finely adjusted using the amplitude (RF amplitude) of the readout signal. Since the spherical aberration can properly be adjusted, it is possible to raise the reliability of the readout signal.
摘要翻译： 不管读出信号检测器的位置误差和光学系统中的残余像差如何，允许可重写光盘装置，光学信息记录和再现装置等将光学系统自动且适当地调整到最佳焦点状态。 使用跟踪误差信号的振幅（PP振幅）粗略调整球面像差和散焦，然后使用读出信号的振幅（RF幅度）进行微调。 由于可以适当地调节球面像差，所以可以提高读出信号的可靠性。
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公开(公告)号：US07480216B2
公开(公告)日：2009-01-20
申请号：US10879080
申请日：2004-06-30
IPC分类号： G11B7/08
CPC分类号： G11B7/13925 , G11B7/0033 , G11B7/0917 , G11B7/0945 , G11B2007/0013
摘要： A rewritable optical disk apparatus, optical information recording and reproducing apparatus or the like is allowed to automatically and properly adjust the optical system to the optimum focal condition regardless of the readout signal detector's positional error and the residual aberration in the optical system. The spherical aberration and defocus are coarsely adjusted using the amplitude (PP amplitude) of the tracking error signal and then finely adjusted using the amplitude (RF amplitude) of the readout signal. Since the spherical aberration can properly be adjusted, it is possible to raise the reliability of the readout signal.
摘要翻译： 不管读出信号检测器的位置误差和光学系统中的残余像差如何，允许可重写光盘装置，光学信息记录和再现装置等将光学系统自动且适当地调整到最佳焦点状态。 使用跟踪误差信号的振幅（PP振幅）粗略调整球面像差和散焦，然后使用读出信号的振幅（RF幅度）进行微调。 由于可以适当地调节球面像差，所以可以提高读出信号的可靠性。
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公开(公告)号：US20060083146A1
公开(公告)日：2006-04-20
申请号：US11059683
申请日：2005-02-17
IPC分类号： G11B7/135
CPC分类号： G11B7/131 , G11B7/1275 , G11B7/1353 , G11B7/1381 , G11B2007/0006
摘要： For optical disk apparatus compatible with multiple standards, employing multiple source beams with different wavelengths, less costly implementations of the photodetecting optics section and associated circuitry are presented. A photodetector plane dedicated to RF signal detection is provided. By bandwidth combining an RF signal detected by this plane is with another signal from other photodetector planes, S/N ratio is improved. For beam splitting, diffraction gratings are used and adjustment precision requirement is relaxed greatly. AC amplifiers can be used as RF photocurrent amplifiers.
摘要翻译： 对于与多种标准兼容的光盘装置，采用具有不同波长的多个源光束，提供了光检测光学部件和相关电路的成本较低的实施方式。 提供专用于RF信号检测的光检测器平面。 通过将由该平面检测到的RF信号的带宽与来自其它光电检测器平面的另一信号组合，提高S / N比。 对于分束，使用衍射光栅，并且大大放宽了调整精度要求。 交流放大器可用作RF光电流放大器。
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公开(公告)号：US06922386B2
公开(公告)日：2005-07-26
申请号：US10713265
申请日：2003-11-17
IPC分类号： G11B7/0045 , G11B7/006 , G11B7/125 , G11B7/135 , G11B7/00
CPC分类号： G11B7/1369 , G11B7/006 , G11B7/128 , G11B7/1353 , G11B7/1395
摘要： Light emitted from a laser is divided into two light waves so that the ratio of the power of one light wave to the power of the other will be appropriate. The resultant light waves are irradiated to the same track on a medium. The preceding spot is used for erasure, and modulated so that the same pattern as the one formed with a recording pulse will be formed. The high-power component of the modulated light of the erasing spot causes the temperature of a recording layer to be equal to or higher than the melting point. The medium-power component of the modulated light forms a crystallizing temperature area on the recording layer. A liquid crystal diffraction grating is used to divide power, and a power division ratio is variable and controllable.
摘要翻译： 从激光发射的光被分成两个光波，使得一个光波的功率与另一个光的功率的比率将是适当的。 所得到的光波照射到介质上的同一轨道上。 前一个点用于擦除，并被调制，使得将形成与记录脉冲形成的图案相同的图案。 擦除斑点的调制光的高功率分量导致记录层的温度等于或高于熔点。 调制光的中功率分量在记录层上形成结晶温度区域。 使用液晶衍射光栅来分配功率，功率分配比是可变的和可控的。
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公开(公告)号：US20090154326A1
公开(公告)日：2009-06-18
申请号：US12379217
申请日：2009-02-17
IPC分类号： G11B7/00
CPC分类号： G11B7/127 , G11B7/1263 , G11B7/128
摘要： Disclosed herewith is a data recording and reading equipment capable of reducing laser noise easily. At first, a laser beam source that can reduce the laser noise when reading data from a subject optical disk is obtained. A modulator capable of varying laser attenuation with a voltage is disposed so as to precede the laser, thereby the laser noise when reading data from the optical disk can be reduced without lowering the laser power when in writing.
摘要翻译： 这里公开了能够容易地减少激光噪声的数据记录和读取设备。 首先，获得当从主体光盘读取数据时能够降低激光噪声的激光束源。 能够在激光之前设置能够以电压变化激光衰减的调制器，从而可以在写入时降低激光功率而降低从光盘读取数据时的激光噪声。
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公开(公告)号：US07502302B2
公开(公告)日：2009-03-10
申请号：US11192082
申请日：2005-07-29
IPC分类号： G11B7/00
CPC分类号： G11B7/127 , G11B7/1263 , G11B7/128
摘要： Disclosed herewith is a data recording and reading equipment capable of reducing laser noise easily. At first, a laser beam source that can reduce the laser noise when reading data from a subject optical disk is obtained. A modulator capable of varying laser attenuation with a voltage is disposed so as to precede the laser, thereby the laser noise when reading data from the optical disk can be reduced without lowering the laser power when in writing.
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公开(公告)号：US20070183274A1
公开(公告)日：2007-08-09
申请号：US11363956
申请日：2006-03-01
IPC分类号： G11B7/00
CPC分类号： G11B7/0943 , G11B7/1369
摘要： An optical disk apparatus for correcting astigmatism that influences the read/ write. If there is astigmatism, and auto-focus and tracking control are in operation, then a push-pull signal amplitude and a 2T signal amplitude vary with the variation of an amount of spherical aberration, resulting in two cases. In one case, the amount of spherical aberration to give the maximum value of push-pull signal amplitude agrees with the amount of spherical aberration to give the maximum value of 2T signal amplitude, and in the other case the two amounts do not agree. If there is no astigmatism, two amounts agree each other. If there in no agreement, then correction is made by using an astigmatism correcting element until the agreement is reached between the two. In the case where two amounts agree, specification is made for the existence and angle of astigmatism, and correction is made by using focus error signals from adjacent tracks.
摘要翻译： 一种用于校正影响读/写的散光的光盘装置。 如果存在散光，并且自动对焦和跟踪控制正在运行，则推挽信号幅度和2T信号幅度随球面像差量的变化而变化，导致两种情况。 在一种情况下，给出推挽信号幅度的最大值的球面像差的量与给出2T信号幅度的最大值的球面像差量一致，而在另一种情况下，两种量不一致。 如果没有散光，两个数量彼此相符。 如果没有达成协议，则在使用散光矫正元件之前进行校正，直到两者达成一致。 在两个数量一致的情况下，对散光的存在和角度进行规定，并且通过使用来自相邻轨道的聚焦误差信号进行校正。
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公开(公告)号：US07596061B2
公开(公告)日：2009-09-29
申请号：US11363956
申请日：2006-03-01
IPC分类号： G11B7/00
CPC分类号： G11B7/0943 , G11B7/1369
摘要： An optical disk apparatus for correcting astigmatism that influences the read/write. If there is astigmatism, and auto-focus and tracking control are in operation, then a push-pull signal amplitude and a 2T signal amplitude vary with the variation of an amount of spherical aberration, resulting in two cases. In one case, the amount of spherical aberration to give the maximum value of push-pull signal amplitude agrees with the amount of spherical aberration to give the maximum value of 2T signal amplitude, and in the other case the two amounts do not agree. If there is no astigmatism, two amounts agree each other. If there in no agreement, then correction is made by using an astigmatism correcting element until the agreement is reached between the two. In the case where two amounts agree, specification is made for the existence and angle of astigmatism, and correction is made by using focus error signals from adjacent tracks.
摘要翻译： 一种用于校正影响读/写的散光的光盘装置。 如果存在散光，并且自动对焦和跟踪控制正在运行，则推挽信号幅度和2T信号幅度随球面像差量的变化而变化，导致两种情况。 在一种情况下，给出推挽信号幅度的最大值的球面像差的量与给出2T信号幅度的最大值的球面像差量一致，而在另一种情况下，两种量不一致。 如果没有散光，两个数量彼此相符。 如果没有达成协议，则在使用散光矫正元件之前进行校正，直到两者达成一致。 在两个数量一致的情况下，对散光的存在和角度进行规定，并且通过使用来自相邻轨道的聚焦误差信号进行校正。
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