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91. 发明授权

US07969840B2 Recording method for optimizing an optimal recording power 有权
标题翻译：用于优化最佳记录功率的记录方法
公开(公告)号：US07969840B2
公开(公告)日：2011-06-28
申请号：US12182735
申请日：2008-07-30
申请人： Nobuo Takeshita , Osamu Tsukahara , Tomo Kishigami
发明人： Nobuo Takeshita , Osamu Tsukahara , Tomo Kishigami
IPC分类号： G11B7/00
CPC分类号： G11B7/1267 , G11B7/00736 , G11B2007/0013
摘要： A recording method for an optical disc having at least three recording layers (11, 12, 13, 14), in which test recording areas are formed in the odd-numbered recording layers (11, 13) and the even-numbered recording layers (12, 14) in positions that are mutually non-overlapping in the thickness direction of the optical disc, the test recording areas in the odd-numbered recording layers are formed in positions mutually aligned in the thickness direction, and the test recording areas in the even-numbered recording layers are formed in positions mutually aligned in the thickness direction. The time for test recording for determining the optimal recording power can be shortened.
摘要翻译：一种用于具有至少三个记录层（11,12,13,14）的光盘的记录方法，其中测试记录区域形成在奇数编号记录层（11,13）和偶数记录层（ 12,14）在光盘的厚度方向上彼此不重叠的位置中，奇数编号记录层中的测试记录区域形成在厚度方向上相互排列的位置，并且测试记录区域偶数编号的记录层形成在厚度方向上相互排列的位置上。可以缩短用于确定最佳记录功率的测试记录的时间。

92. 发明申请

US20080298195A1 Optical recording method and optical recording device 有权
标题翻译：光记录方法和光记录装置
公开(公告)号：US20080298195A1
公开(公告)日：2008-12-04
申请号：US12153965
申请日：2008-05-28
申请人： Yusuke Kanatake , Tomo Kishigami , Nobuo Takeshita
发明人： Yusuke Kanatake , Tomo Kishigami , Nobuo Takeshita
IPC分类号： G11B20/18
CPC分类号： G11B7/0062 , G11B7/1267
摘要： To adjust the parameters of a write strategy for recording data on an optical recording medium, the jitter value of a reproduced signal obtained from recorded data is detected. If the jitter value exceeds a prescribed threshold, a write strategy parameter having a comparatively small effect on the jitter value is adjusted, and subsequent data are written on the recording medium using the adjusted parameter. Parameters are selected for adjustment in ascending order of their effect on the jitter value. Stable data recording can thereby be carried out without significant jitter degradation.
摘要翻译：为了调整用于在光学记录介质上记录数据的写入策略的参数，检测从记录数据获得的再现信号的抖动值。如果抖动值超过规定的阈值，则调整对抖动值的影响较小的写入策略参数，并且使用调整后的参数将后续的数据写入记录介质。选择参数来调整其对抖动值的影响的升序。从而可以在没有显着的抖动劣化的情况下执行稳定的数据记录。

93. 发明授权

US07272083B2 Optical head device and method for correcting spherical aberration 失效
公开(公告)号：US07272083B2
公开(公告)日：2007-09-18
申请号：US09984131
申请日：2001-10-29
申请人： Nobuo Takeshita
发明人： Nobuo Takeshita
IPC分类号： G11B7/085 , G02F1/29
CPC分类号： G11B7/1376 , G11B7/0948 , G11B7/1353 , G11B7/1374 , G11B7/1381 , G11B7/13927 , G11B2007/13727
摘要： On an optical disk in a recording and/or playback apparatus, the position at which the thickness error of a light transmission layer is in the optical axis of an objective lens 11, and the position at which the recording/playback of information is performed is in the optical axis of a two-group objective lens 20, so that they are spaced apart from each other, making it impossible to accurately detect the thickness error at the position where the recording/playback of information is performed. Further, to chronologically compensate for the space between them, an excess circuit is required. In view of this, a first reflection light 107a reflected by a medium surface 106a of the optical disk is received to detect the focal error with respect to the medium surface, and a second reflection light 107b reflected by the surface of a light transmission layer 106b formed on the medium surface 106a to detect the focal error with respect to the surface of the light transmission layer 106b. And, in correspondence with the focal error with respect to the surface of the light transmission layer 106a, the collimator lens 103 is moved.

94. 发明授权

US5479386A Lens actuating system for an optical disk drive having a driven mass for cancelling forces 失效
标题翻译：用于具有用于抵消力的驱动质量的光盘驱动器的镜头致动系统
公开(公告)号：US5479386A
公开(公告)日：1995-12-26
申请号：US312086
申请日：1994-09-26
申请人： Nobuo Takeshita , Hideaki Kobachi , Mitsuru Irie , Morihiro Karaki
发明人： Nobuo Takeshita , Hideaki Kobachi , Mitsuru Irie , Morihiro Karaki
IPC分类号： G11B7/085 , G11B7/00
CPC分类号： G11B7/08505
摘要： A lens actuating system for an optical disk drive has an objective lens movably mounted in a movable frame with orthogonal X-, Y-, and Z-axes. A seeking servo moves the frame in the X-direction. A tracking servo moves the objective lens in the X-direction. A focusing servo moves the objective lens in the Z-direction. An optoelectronic sensor detects the relative position of the objective lens and frame in the X-direction, so that the tracking servo can maintain a fixed relative position during track-seeking, or in the Z-direction, to establish a neutral point on the Z-axis for the focusing servo. Force applied by the focusing servo or tracking servo to move the objective lens in one direction can be opposed by an equal and opposite force applied to a driven mass, so that a net zero force is transmitted to the frame.
摘要翻译：用于光盘驱动器的镜头致动系统具有可移动地安装在具有正交X，Y和Z轴的可移动框架中的物镜。寻求伺服器在X方向上移动框架。跟踪伺服在X方向移动物镜。聚焦伺服将物镜沿Z方向移动。光电传感器在X方向上检测物镜和镜架的相对位置，使得跟踪伺服器可以在寻轨期间或在Z方向上保持固定的相对位置，以在Z上建立中性点轴用于聚焦伺服。通过聚焦伺服或跟踪伺服施加的力在一个方向上移动物镜可以通过施加到从动质量上的相等和相反的力相对，从而净零力传递到框架。

95. 发明授权

US5313447A Optical head 失效
标题翻译：光头
公开(公告)号：US5313447A
公开(公告)日：1994-05-17
申请号：US77969
申请日：1993-06-18
申请人： Nobuo Takeshita , Kenjiro Kime , Teruo Fujita , Hiroo Shimegi , Kazuo Okada
发明人： Nobuo Takeshita , Kenjiro Kime , Teruo Fujita , Hiroo Shimegi , Kazuo Okada
IPC分类号： G11B7/135
CPC分类号： G11B7/1359
摘要： An optical head for recording, reproducing or erasing data by emitting a light beam irradiated from a light source onto a recording medium. To reduce the height of the optical head, an optical axis shifting device is disposed between a light beam emitting device and a condensing device for condensing the light beam onto the recording medium. This optical axis shifting device shifts the first optical axis of the light beam from the light beam emitting device to a second optical axis positioned in parallel and spaced apart from each other. As the optical axis shifting device, there is preferable employed a prism having two reflecting faces lying in parallel, and the optical axis, after shifting is to be positioned downwardly of the position of the optical axis before shifting, thereby reducing the height of the optical head.
摘要翻译：用于通过将从光源照射的光束发射到记录介质上来记录，再现或擦除数据的光学头。为了降低光头的高度，光轴移动装置设置在光束发射装置和用于将光束聚集到记录介质上的聚光装置之间。该光轴移动装置将光束的第一光轴从光束发射装置移动到彼此平行且间隔开的第二光轴。作为光轴移动装置，优选使用具有平行的两个反射面的棱镜，移动后的光轴位于移动前的光轴的位置的下方，由此降低光学的高度头。

96. 发明授权

US08787135B2 Signal processing device, signal processing method, and optical disc apparatus 有权
标题翻译：信号处理装置，信号处理方法以及光盘装置
公开(公告)号：US08787135B2
公开(公告)日：2014-07-22
申请号：US14114059
申请日：2012-02-17
申请人： Masayuki Omaki , Kenya Nakai , Nobuo Takeshita
发明人： Masayuki Omaki , Kenya Nakai , Nobuo Takeshita
IPC分类号： G11B20/10
CPC分类号： G11B20/10222 , G11B20/10037 , G11B20/10046 , G11B20/10055 , G11B20/1012 , G11B20/1024 , G11B20/10277 , G11B20/10462 , G11B2220/2537
摘要： Provided is a signal processing device including: an adaptive filter; a PRML circuit for sequentially generating binarized data from a filtered reproduced waveform by sampling at sampling points in a period based on a clock signal and sequentially generating a partial response waveform which is to be the target waveform from the binarized data; a calculating unit for sequentially calculating first phase errors from a difference between the target waveform and the filtered reproduced waveform; a limiting unit for outputting second phase errors by excluding a specific phase error from the first phase errors; and a clock generating unit for generating the clock signal of a frequency corresponding to the second phase errors; wherein the specific phase error includes a phase error at a time when the partial response waveform reaches a specific level which excludes at least a level not less than a predetermined amplitude level.
摘要翻译：提供一种信号处理装置，包括：自适应滤波器; PRML电路，用于基于时钟信号在一个周期的采样点采样从所滤波的再现波形顺序地生成二值化数据，并从二值化数据顺序地产生作为目标波形的部分响应波形; 计算单元，用于从目标波形和滤波的再现波形之间的差顺序地计算第一相位误差; 限制单元，用于通过从第一相位误差排除特定相位误差来输出第二相位误差; 以及时钟产生单元，用于产生与第二相位误差对应的频率的时钟信号; 其中所述特定相位误差包括当所述部分响应波形达到排除至少不小于预定幅度电平的电平的特定电平时的相位误差。

97. 发明申请

US20130114385A1 OPTICAL INFORMATION RECORDING MEDIUM AND DRIVE DEVICE 有权
标题翻译：光信息记录介质和驱动设备
公开(公告)号：US20130114385A1
公开(公告)日：2013-05-09
申请号：US13811173
申请日：2011-07-25
申请人： Kenya Nakai , Masayuki Omaki , Nobuo Takeshita
发明人： Kenya Nakai , Masayuki Omaki , Nobuo Takeshita
IPC分类号： G11B7/24 , G11B7/09
CPC分类号： G11B7/24 , G11B7/0908 , G11B7/24038 , G11B7/24056 , G11B7/24065
摘要： An optical information recording medium includes at least one recording layer, a protective layer that transmits a focused laser beam, and a super-resolution functional layer that changes an optical characteristic in a local region smaller than the diffraction limit determined by the optical performance of the focusing optical system and the wavelength of the laser beam during at least the period of irradiation by the focused laser beam. The maximum thickness (K) between the light incidence surface of the protective layer and the recording layer is 0.083 mm.
摘要翻译：光学信息记录介质包括至少一个记录层，透射聚焦激光束的保护层和超分辨率功能层，该超分辨率功能层改变局部区域中的光学特性，该区域小于由光学性能决定的衍射极限在聚焦的激光束的至少照射期间，聚焦光学系统和激光束的波长。保护层的光入射面与记录层之间的最大厚度（K）为0.083mm。

98. 发明授权

US08295136B2 Optical recording device and method 有权
标题翻译：光记录装置及方法
公开(公告)号：US08295136B2
公开(公告)日：2012-10-23
申请号：US13174990
申请日：2011-07-01
申请人： Tomo Kishigami , Nobuo Takeshita
发明人： Tomo Kishigami , Nobuo Takeshita
IPC分类号： G11B7/00
CPC分类号： G11B7/1267 , G11B7/00736 , G11B2007/0013
摘要： Before new information is recorded on a comparatively deep recording layer in a multilayer optical recording disc, a predetermined target value of a reproduced signal parameter is read from the disc itself or from a separate storage unit, the recorded/unrecorded states of the shallower recording layers are determined, and the target value is corrected on the basis of these states. The correction is based on a predetermined difference in the value of the reproduced signal parameter caused by a difference in the recorded/unrecorded states of the shallower recording layers. The corrected target value is used in calibration of the recording power by means of a test write. This correction of the target value permits reliable recording on a multilayer optical disc without delaying the start of the recording process.
摘要翻译：在新信息被记录在多层光学记录盘中相对较深的记录层上之前，再现信号参数的预定目标值从盘本身或单独的存储单元读取，较浅记录层的记录/未记录状态并且基于这些状态来校正目标值。校正基于由较浅记录层的记录/未记录状态的差引起的再现信号参数的值的预定差异。通过测试写入，校正目标值用于校准记录功率。目标值的这种校正允许在多层光盘上的可靠记录，而不延迟开始记录处理。

99. 发明授权

US07957238B2 Optical recording method and optical recorder 有权
标题翻译：光学记录方法和光学记录仪
公开(公告)号：US07957238B2
公开(公告)日：2011-06-07
申请号：US10541628
申请日：2004-06-04
申请人： Tomo Kishigami , Nobuo Takeshita , Osamu Tsukahara
发明人： Tomo Kishigami , Nobuo Takeshita , Osamu Tsukahara
IPC分类号： G11B20/10 , G11B5/09
CPC分类号： G11B7/00456 , G11B7/00736
摘要： A write strategy for use in recording is determined from recommended write strategy parameters recorded on an optical disk (160) and the characteristics of the optical recording device used in recording; a recommended asymmetry value is determined from the difference between the numerical aperture NA1 of the objective lens, which is a recording condition of the recommended asymmetry value recorded on the optical disk (160) and the numerical aperture NA2 of the objective lens (150) of the optical recording device used in recording, and recording is carried out on the optical disk (160) according to the write strategy and asymmetry value thus determined. Optimal recording can be carried out even on an optical disk for which the optimal write strategy information has not been determined in advance, without the need to store write strategy information suitable for each and every optical disk.
摘要翻译：用于记录的写入策略由记录在光盘（160）上的推荐写入策略参数和记录中使用的光学记录装置的特性来确定。根据作为记录在光盘（160）上的推荐不对称值的记录条件的物镜的数值孔径NA1与物镜（150）的数值孔径NA2之间的差确定推荐的不对称值，根据如此确定的写入策略和不对称值，在光盘（160）上进行用于记录和记录的光记录装置。即使在没有预先确定最佳写入策略信息的光盘上也可以进行最佳记录，而不需要存储适合于每个光盘的写入策略信息。

100. 发明申请

US20080159086A1 Optical Disk and Optical Disk Device and Control Device 有权
标题翻译：光盘和光盘设备和控制设备
公开(公告)号：US20080159086A1
公开(公告)日：2008-07-03
申请号：US11885145
申请日：2006-02-21
申请人： Nobuo Takeshita , Noboru Yashima , Masaharu Ogawa
发明人： Nobuo Takeshita , Noboru Yashima , Masaharu Ogawa
IPC分类号： G11B21/10
CPC分类号： G11B7/00736 , G11B7/24038 , G11B2007/0013
摘要： The present invention relates to optical disks and optical disk devices, and has an object to reduce access time and prevent malfunction. To attain the above object, in an optical disk (100), a management information area (130) is placed inside a user data area (140), namely, at the innermost circumference position of the optical disk (100), in an information layer (101) placed at the farthest position from the surface. A position information area (132) that stores position information indicating the position of each information layer in a thickness direction of the optical disk (100) is placed in the management information area (130).
摘要翻译：本发明涉及光盘和光盘装置，其目的是减少访问时间并防止故障。为了实现上述目的，在光盘（100）中，将管理信息区域（130）放置在用户数据区域（140）内，即位于光盘（100）的最内圆周位置处的信息中层（101）位于离表面最远的位置。将存储指示光盘（100）的厚度方向上的各信息层的位置的位置信息的位置信息区域（132）放置在管理信息区域（130）中。

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