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公开(公告)号：US20090303847A1
公开(公告)日：2009-12-10
申请号：US12473752
申请日：2009-05-28
IPC分类号： G11B7/00
CPC分类号： G11B7/13925 , G11B7/08511 , G11B7/0945 , G11B7/24038 , G11B2007/0013
摘要： There is a need to accurately lock focus of a laser beam onto a target data layer of a multilayer optical disc. The above need can be addressed by, for example, performing a focus lock operation after a spherical aberration correction amount is set in such a way as to make smaller the ratio of the focus error signal waveform amplitude at the data layer adjacent to a target data layer through which a laser beam passes earlier than through the target data layer to the focus error signal waveform amplitude at the target data layer than that when the spherical aberration correction amount is set so as to be optimal for the target data layer.
摘要翻译： 需要将激光束的焦点准确地锁定到多层光盘的目标数据层上。 可以通过例如在设置球面像差校正量之后进行聚焦锁定操作来解决上述需要，以便使得与目标数据相邻的数据层处的聚焦误差信号波形幅度的比例变小 激光束比通过目标数据层更早地传递到目标数据层的聚焦误差信号波形振幅的层，而不是对于目标数据层设置为最佳的球面像差校正量。
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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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33.发明授权Information recording apparatus, information recording medium and information recording medium 失效信息记录装置，信息记录介质和信息记录方法公开(公告)号：US07542396B2
公开(公告)日：2009-06-02
申请号：US11209648
申请日：2005-08-24
申请人： Motoyasu Terao , Toshimasa Kamisada , Shinichi Nakatsuka , Takeshi Shimano , Hitoshi Ishii , Kazuhiro Soga , Yoshiaki Ogino
发明人： Motoyasu Terao , Toshimasa Kamisada , Shinichi Nakatsuka , Takeshi Shimano , Hitoshi Ishii , Kazuhiro Soga , Yoshiaki Ogino
IPC分类号： G11B7/00
CPC分类号： G11B7/1367 , G11B7/0938 , G11B7/127 , G11B2007/0009
摘要： To achieve stable, high capacity, high speed recording. Of two light beams emitted from a light irradiation means, one or two beams are made pass through an optical path changeable member whereof at least one of the thickness and refractive index changes continuously or in two or more steps immediately after emission from the light irradiation means, so that a difference is introduced into the optical path length of the two beams, and the focusing point of one beam is made to vary to coincide with a position in the recording layer used for playback or recording. Another light beam is used for servo. Converging of light during recording or read of a multilayer recording medium is performed with higher precision than in the prior art, so higher density, higher capacity recording/playback can be performed.
摘要翻译： 要实现稳定，高容量，高速录音。 在从光照射装置发射的两束光束中，使一束或两束光束通过光路可变构件，其中厚度和折射率中的至少一个连续地或者在从光照射装置发射之后立即改变两个或更多个步骤 ，从而在两个光束的光程长度上引入差异，并且使一个光束的聚焦点变化以与用于回放或记录的记录层中的位置一致。 另一光束用于伺服。 以比现有技术更高的精度执行多层记录介质的记录或读取期间的光的会聚，因此可以执行更高密度，更高容量的记录/重放。
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34.发明授权公开(公告)号：US07457206B2
公开(公告)日：2008-11-25
申请号：US11211438
申请日：2005-08-26
IPC分类号： G11B7/00
CPC分类号： G11B7/08576 , G11B7/123 , G11B7/1374
摘要： In an optical head, if a lens is reduced in size so that it can be integrated with a light source and a photodetector, other optical components as well as the lens must be reduced in size, which would result in greater difficulties in handling for assembly and adjustment purposes. The invention allows large quantities of ultra-small optical heads to be produced accurately and at low cost, the optical heads being easy to adjust and not requiring the handling of minute components for adjustment purposes. A first substrate includes lenses for focusing light on an information storage medium, a second substrate includes detectors and disposed on the surface thereof, and a layer, which is disposed between the first and second substrates, includes prisms and mirrors. The layer also includes cavities in which light sources are disposed. The individual substrates are formed in the form of wafers with the lenses, mirrors, prisms, light sources, and photodetectors disposed thereon.
摘要翻译： 在光学头中，如果透镜的尺寸减小以使其能够与光源和光电检测器集成，则其它光学部件以及透镜的尺寸必须减小，这将导致更大的装配难度 和调整目的。 本发明允许以低成本准确地，低成本地制造大量的超小型光学头，光学头易于调节，并且不需要处理用于调整目的的微小部件。 第一基板包括用于将光聚焦在信息存储介质上的透镜，第二基板包括检测器并设置在其表面上，并且布置在第一和第二基板之间的层包括棱镜和反射镜。 该层还包括其中设置有光源的空腔。 各个基板以晶片的形式形成，其上设置有透镜，反射镜，棱镜，光源和光电探测器。
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公开(公告)号：US20080267019A1
公开(公告)日：2008-10-30
申请号：US11870461
申请日：2007-10-11
申请人： Shigeharu Kimura , Takeshi Shimano
发明人： Shigeharu Kimura , Takeshi Shimano
IPC分类号： G11B21/08
CPC分类号： G11B7/1381 , G11B7/0903 , G11B7/0909 , G11B7/131 , G11B7/1365 , G11B2007/0013
摘要： When tracking a dual-layer optical disc by a differential push-pull method, the adverse effect of the reflected light from an adjacent layer, which produces stray light, on a tracking control signal is prevented. A split wavelength plate 20 is inserted in the optical path of the reflected light from the optical disc including the stray light from the adjacent layer so as to detect a region having no interference with the stray light with a four-quadrant detector, and then a push-pull signal by a sub-beam is formed.
摘要翻译： 当通过差分推挽方法跟踪双层光盘时，防止产生杂散光的相邻层的反射光对跟踪控制信号的不良影响。 将分离波长板20插入到包括来自相邻层的杂散光的光盘的反射光的光路中，以便利用四象限检测器检测不与杂散光干涉的区域，然后将 形成了通过子光束的推挽信号。
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公开(公告)号：US20080100890A1
公开(公告)日：2008-05-01
申请号：US11840410
申请日：2007-08-17
申请人： KEVIN R. CURTIS , Ken E. Anderson , Friso Schlottau , Tatsuro Ide , KEN'ICHI SHIMADA , Takeshi Shimano , Harukazu Miyamoto
发明人： KEVIN R. CURTIS , Ken E. Anderson , Friso Schlottau , Tatsuro Ide , KEN'ICHI SHIMADA , Takeshi Shimano , Harukazu Miyamoto
CPC分类号： G06F11/1004 , G03H1/265 , G03H2223/17 , G06F9/45533 , G11B7/0065 , G11B7/00736
摘要： A monocular holographic storage device or system to provide for compact recording and/or reading of data pages in a holographic storage medium. Also provided are methods for carrying out such data storage and/or data recovery using a monocular holographic storage device or system. Further provided are articles comprising holographic storage media for recording or for reading recorded data using such devices or systems.
摘要翻译： 一种用于提供全息存储介质中数据页的紧凑记录和/或读取的单目全息存储设备或系统。 还提供了使用单眼全息存储装置或系统进行这种数据存储和/或数据恢复的方法。 还提供了包括用于记录或使用这种装置或系统读取记录数据的全息存储介质的物品。
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37.发明申请公开(公告)号：US20080067321A1
公开(公告)日：2008-03-20
申请号：US11852361
申请日：2007-09-10
IPC分类号： G02B27/40
CPC分类号： G11B7/1356 , G11B7/005 , G11B7/13 , G11B2007/0013
摘要： In multilayer optical discs and high-speed optical discs, the amount of reproduction light per unit time greatly decreases and the reproduction signal quality (S/N) significantly drops due to the low effective reflectivity and the short read time of the medium. These problems are solved by causing reflected signal light from the optical disc and reference light, which is separated from the same light source and introduced into a detector without being shone onto the optical disc, to interference with each other on the detector. Detector outputs having four different interference states are simultaneously obtained, the interference states being displaced at intervals of 90° in terms of the phase relationship between the reference light and the signal. Based on a operation of the four detector outputs, a reproduction signal can be obtained that is stable at all times and amplified with high quality, even when there is an optical path length variation due to disc undulations.
摘要翻译： 在多层光盘和高速光盘中，由于介质的有效反射率低和读取时间短，每单位时间的再现光量大大降低，再现信号质量（S / N）显着下降。 这些问题通过使来自光盘的反射信号光和从相同光源分离并被引入检测器而不被照射到光盘上的参考光在检测器上彼此干涉来解决。 同时获得具有四种不同干扰状态的检测器输出，以参考光和信号之间的相位关系为90°的间隔移位干涉状态。 基于四个检测器输出的操作，即使当由于盘起伏而导致光程长度变化时，也可以始终获得稳定的高质量放大的再现信号。
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38.发明授权公开(公告)号：US07283439B2
公开(公告)日：2007-10-16
申请号：US11270613
申请日：2005-11-10
申请人： Takeshi Shimano , Takeshi Maeda , Hirofumi Sukeda
发明人： Takeshi Shimano , Takeshi Maeda , Hirofumi Sukeda
CPC分类号： G11B7/13927 , G11B7/08576 , G11B7/09 , G11B7/123 , G11B7/131 , G11B7/1353 , G11B7/1365 , G11B7/1369 , G11B7/1381 , G11B2007/13727
摘要： In the past there has been a problem that on a detection surface the influence of interference causes a defocusing signal to degrade, narrowing the range in which spherical aberration can be stably detected. Accordingly, a diffraction grating is used to focus the inner and outer sides of luminous flux on separate optical detectors before the optical flux is focused on an optical detector and defocusing signals are independently calculated to find the difference therebetween, thereby providing a spherical aberration signal. This makes it possible to detect spherical aberration signals more stably.
摘要翻译： 过去存在这样的问题：在检测面上，干扰的影响会导致散焦信号劣化，能够使可以稳定地检测球面像差的范围变窄。 因此，衍射光栅用于在光通量聚焦在光学检测器之前将光通量的内侧和外侧聚焦在单独的光学检测器上，并且独立地计算散焦信号以找到它们之间的差异，从而提供球面像差信号。 这使得可以更稳定地检测球面像差信号。
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39.发明申请公开(公告)号：US20060193214A1
公开(公告)日：2006-08-31
申请号：US11211438
申请日：2005-08-26
IPC分类号： G11B7/00
CPC分类号： G11B7/08576 , G11B7/123 , G11B7/1374
摘要： In an optical head, if a lens is reduced in size so that it can be integrated with a light source and a photodetector, other optical components as well as the lens must be reduced in size, which would result in greater difficulties in handling for assembly and adjustment purposes. The invention allows large quantities of ultra-small optical heads to be produced accurately and at low cost, the optical heads being easy to adjust and not requiring the handling of minute components for adjustment purposes. A first substrate includes lenses for focusing light on an information storage medium, a second substrate includes detectors and disposed on the surface thereof, and a layer, which is disposed between the first and second substrates, includes prisms and mirrors. The layer also includes cavities in which light sources are disposed. The individual substrates are formed in the form of wafers with the lenses, mirrors, prisms, light sources, and photodetectors disposed thereon.
摘要翻译： 在光学头中，如果透镜的尺寸减小以使其能够与光源和光电检测器集成，则其它光学部件以及透镜的尺寸必须减小，这将导致更大的装配难度 和调整目的。 本发明允许以低成本准确地，低成本地制造大量的超小型光学头，光学头易于调节，并且不需要处理用于调整目的的微小部件。 第一基板包括用于将光聚焦在信息存储介质上的透镜，第二基板包括检测器并设置在其表面上，并且布置在第一和第二基板之间的层包括棱镜和反射镜。 该层还包括其中设置有光源的空腔。 各个基板以晶片的形式形成，其上设置有透镜，反射镜，棱镜，光源和光电探测器。
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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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