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1. 发明授权

US08339909B2 Optical disc device 有权
标题翻译：光盘设备
公开(公告)号：US08339909B2
公开(公告)日：2012-12-25
申请号：US13258538
申请日：2010-05-21
申请人： Kenya Nakai , Masayuki Ohmaki , Nobuo Takeshita
发明人： Kenya Nakai , Masayuki Ohmaki , Nobuo Takeshita
IPC分类号： G11B7/00
CPC分类号： G11B7/005 , G11B7/131 , G11B20/10009 , G11B20/10027 , G11B20/10046 , G11B20/10222 , G11B20/10296 , G11B20/10416 , G11B2220/2595
摘要： A first signal is detected from the central part of a light beam returning from a super-resolution optical disc; a second signal is detected from a peripheral part in a direction corresponding to a track on the super-resolution optical disc; a gain adjustment unit is provided to adjust the amplitude of the first signal; a subtraction unit is provided to generate a third signal by subtracting, from the second signal, the first signal with the amplitude adjusted by the gain adjustment unit; and an unit is provided to generate a reproduced signal by combining the first signal and a signal obtained by delaying the third signal.
摘要翻译：从从超分辨率光盘返回的光束的中心部分检测第一信号; 在与超分辨率光盘上的轨道对应的方向上从外围部分检测第二信号; 提供增益调整单元来调整第一信号的幅度; 减法单元被提供以通过从第二信号中减去由增益调整单元调整的幅度的第一信号来产生第三信号; 并且提供单元以通过组合第一信号和通过延迟第三信号而获得的信号来产生再现信号。

2. 发明申请

US20120014237A1 OPTICAL DISC DEVICE 有权
标题翻译：光盘设备
公开(公告)号：US20120014237A1
公开(公告)日：2012-01-19
申请号：US13258538
申请日：2010-05-21
申请人： Kenya Nakai , Masayuki Ohmaki , Nobuo Takeshita
发明人： Kenya Nakai , Masayuki Ohmaki , Nobuo Takeshita
IPC分类号： G11B20/10
CPC分类号： G11B7/005 , G11B7/131 , G11B20/10009 , G11B20/10027 , G11B20/10046 , G11B20/10222 , G11B20/10296 , G11B20/10416 , G11B2220/2595
摘要： A first signal is detected from the central part of a light beam returning from a super-resolution optical disc; a second signal is detected from a peripheral part in a direction corresponding to a track on the super-resolution optical disc; a gain adjustment unit is provided to adjust the amplitude of the first signal; a subtraction unit is provided to generate a third signal by subtracting, from the second signal, the first signal with the amplitude adjusted by the gain adjustment unit; and an unit is provided to generate a reproduced signal by combining the first signal and a signal obtained by delaying the third signal.
摘要翻译：从从超分辨率光盘返回的光束的中心部分检测第一信号; 在与超分辨率光盘上的轨道对应的方向上从外围部分检测第二信号; 提供增益调整单元来调整第一信号的幅度; 减法单元被提供以通过从第二信号中减去由增益调整单元调整的幅度的第一信号来产生第三信号; 并且提供单元以通过组合第一信号和通过延迟第三信号而获得的信号来产生再现信号。

3. 发明授权

US09007881B2 Optical head device and optical disc device 有权
标题翻译：光头设备和光盘设备
公开(公告)号：US09007881B2
公开(公告)日：2015-04-14
申请号：US14357745
申请日：2012-11-26
申请人： Masayuki Omaki , Kenya Nakai , Nobuo Takeshita
发明人： Masayuki Omaki , Kenya Nakai , Nobuo Takeshita
IPC分类号： G11B7/00 , G11B7/1353 , G11B7/131 , G11B7/09 , G11B7/125
CPC分类号： G11B7/1353 , G11B7/0903 , G11B7/094 , G11B7/125 , G11B7/131 , G11B2007/0013
摘要： An optical head device (11) provided with: an optical element (36) for transmissively diffracting a light beam emitted from a semiconductor laser (34), generating a zero-order diffracted light beam and ±1-order diffracted light beams; and a photodetector (40) for receiving the zero-order diffracted light beam and the +1-order diffracted light beam after reflection from an optical disc (2). The photodetector (40) includes a primary light receiving section (400) for receiving the zero-order diffracted light beam, and a first secondary light receiving section (401) disposed outward from the primary light receiving section (400). The first secondary light receiving section (401) is positioned to detect an outer portion of the received light spot of the +1-order diffracted light beam, performs photoelectric conversion of this portion, and outputs a secondary detected signal.
摘要翻译：一种光学头装置（11），具有：用于透射衍射从半导体激光器（34）发射的光束的光学元件（36），产生零级衍射光束和±1级衍射光束; 以及用于在从光盘（2）反射之后接收零级衍射光束和+ 1级衍射光束的光电检测器（40）。光电检测器（40）包括用于接收零级衍射光束的初级光接收部分（400）和从初级光接收部分（400）向外设置的第一副光接收部分（401）。第一次级光接收部（401）被定位成检测+ 1级衍射光束的接收光点的外部，进行该部分的光电转换，并输出二次检测信号。

4. 发明授权

US08537653B2 Optical information recording medium and drive device 有权
标题翻译：光信息记录介质和驱动装置
公开(公告)号：US08537653B2
公开(公告)日：2013-09-17
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
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。

5. 发明申请

US20120106310A1 OPTICAL HEAD DEVICE AND OPTICAL DISC DEVICE 有权
标题翻译：光头设备和光盘设备
公开(公告)号：US20120106310A1
公开(公告)日：2012-05-03
申请号：US13380791
申请日：2011-01-17
申请人： Masahisa Shinoda , Hironori Nakahara , Masayuki Omaki , Kenya Nakai , Nobuo Takeshita
发明人： Masahisa Shinoda , Hironori Nakahara , Masayuki Omaki , Kenya Nakai , Nobuo Takeshita
IPC分类号： G11B7/1353 , G11B7/1374
CPC分类号： G11B7/0903 , G11B7/094 , G11B7/131 , G11B7/1353 , G11B7/13925 , G11B7/1395 , G11B2007/0013
摘要： An optical head device mounted in an optical disc device. The optical head device is provided with a diffractive optical element and a photodetector. The diffractive optical element has: a primary diffraction region at a location on which the positive and negative first-order components and some of the zero-order component of a reflectively diffracted light beam are incident; and secondary diffraction regions at locations on which the rest of the zero-order component but none of the positive or negative first-order components of the reflectively diffracted light beam are incident. A main light-receiving section of the photodetector receives the zero-order component of a transmissively diffracted light beam that has passed through the primary diffraction region and the secondary diffraction regions. Secondary light-receiving sections receive the positive first-order component and/or the negative first-order component of the transmissively diffracted light beam that has passed through the secondary diffraction regions.
摘要翻译：安装在光盘装置中的光学头装置。光头装置设置有衍射光学元件和光电检测器。衍射光学元件具有：反射衍射光束的正，负一阶分量和零级分量的一部分入射的位置处的主衍射区域; 以及零反射衍射光束的零级分量的其余部分而不是反射衍射光束的正或负一阶分量的位置处的次级衍射区域。光检测器的主光接收部接收通过一次衍射区域和二次衍射区域的透射衍射光束的零级分量。次级光接收部分接收通过次级衍射区域的透射衍射光束的正一级分量和/或负一级分量。

6. 发明申请

US20090303850A1 OPTICAL DISC MEDIUM AND OPTICAL DISC DEVICE 有权
标题翻译：光盘和光盘设备
公开(公告)号：US20090303850A1
公开(公告)日：2009-12-10
申请号：US12375138
申请日：2007-05-22
申请人： Kenya Nakai , Masahisa Shinoda , Nobuo Takeshita
发明人： Kenya Nakai , Masahisa Shinoda , Nobuo Takeshita
IPC分类号： G11B20/18 , G11B7/24
CPC分类号： G11B7/24 , G11B7/0901 , G11B7/0941 , G11B7/24085 , G11B2007/24308 , G11B2007/2431 , G11B2007/24314 , G11B2007/24316
摘要： When using an optical disc medium that includes pit trains having their widths narrower than a diffraction limit, it is difficult to detect a tracking error signal and take a tracking-servo control while increasing pit density in a direction orthogonal to a pit-train extension direction.Information pit trains are arranged spirally or concentrically and formed in a structure in which their depths are changed periodically at a pitch radially along the optical disc medium, so that the tracking error signal can be obtained by push-pull detection of diffraction light from the structure.
摘要翻译：当使用包括其宽度窄于衍射极限的凹坑列的光盘介质时，难以检测跟踪误差信号并进行跟踪伺服控制，同时在垂直于凹坑列延伸方向的方向上增加凹坑密度。信息坑列被螺旋地或同心地布置并且形成在其深度沿着光盘介质沿径向周期性地改变的结构中，从而可以通过来自结构的衍射光的推挽检测来获得跟踪误差信号。

7. 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。

8. 发明授权

US08472300B2 Optical head device and optical disc device 有权
标题翻译：光头设备和光盘设备
公开(公告)号：US08472300B2
公开(公告)日：2013-06-25
申请号：US13380791
申请日：2011-01-17
申请人： Masahisa Shinoda , Hironori Nakahara , Masayuki Omaki , Kenya Nakai , Nobuo Takeshita
发明人： Masahisa Shinoda , Hironori Nakahara , Masayuki Omaki , Kenya Nakai , Nobuo Takeshita
IPC分类号： G11B7/00
CPC分类号： G11B7/0903 , G11B7/094 , G11B7/131 , G11B7/1353 , G11B7/13925 , G11B7/1395 , G11B2007/0013
摘要： An optical head device mounted in an optical disc device. The optical head device is provided with a diffractive optical element and a photodetector. The diffractive optical element has: a primary diffraction region at a location on which the positive and negative first-order components and some of the zero-order component of a reflectively diffracted light beam are incident; and secondary diffraction regions at locations on which the rest of the zero-order component but none of the positive or negative first-order components of the reflectively diffracted light beam are incident. A main light-receiving section of the photodetector receives the zero-order component of a transmissively diffracted light beam that has passed through the primary diffraction region and the secondary diffraction regions. Secondary light-receiving sections receive the positive first-order component and/or the negative first-order component of the transmissively diffracted light beam that has passed through the secondary diffraction regions.
摘要翻译：安装在光盘装置中的光学头装置。光头装置设置有衍射光学元件和光电检测器。衍射光学元件具有：反射衍射光束的正，负一阶分量和零级分量的一部分入射的位置处的初级衍射区域; 以及零反射衍射光束的零级分量的其余部分而不是反射衍射光束的正或负一阶分量的位置处的次级衍射区域。光检测器的主光接收部接收通过一次衍射区域和二次衍射区域的透射衍射光束的零级分量。次级光接收部分接收通过次级衍射区域的透射衍射光束的正一级分量和/或负一级分量。

9. 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。

10. 发明申请

US20140043950A1 SIGNAL PROCESSING DEVICE, SIGNAL PROCESSING METHOD, AND OPTICAL DISC APPARATUS 有权
标题翻译：信号处理装置，信号处理方法和光盘装置
公开(公告)号：US20140043950A1
公开(公告)日：2014-02-13
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。

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