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1.发明授权公开(公告)号：US08081548B2
公开(公告)日：2011-12-20
申请号：US12864437
申请日：2009-01-27
IPC分类号： G11B20/18
CPC分类号： G11B7/268 , G01B11/06 , G11B7/00375 , G11B7/24038
摘要： A multilayer optical recording medium having three or more information recording layers is irradiated with a laser beam, and a first signal obtained from the reflected laser beam is subjected to a frequency filter. A second signal obtained by filtration through a high-pass filter is used to evaluate the characteristics of the multilayer optical recording medium. In this manner, even in a multilayer optical recording medium having three or more information recording layers, the influence of the variation of the thickness and material of the information recording layers and the influence of the variation of the thickness of a spacer layer can be clearly determined and evaluated.
摘要翻译： 用激光束照射具有三个以上信息记录层的多层光记录介质，对从反射激光束得到的第一信号进行频率滤波。 使用通过高通滤波器过滤获得的第二信号来评估多层光学记录介质的特性。 以这种方式，即使在具有三个或更多个信息记录层的多层光学记录介质中，信息记录层的厚度和材料的变化的影响以及间隔层的厚度的变化的影响也可以是清楚的 确定和评估。
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公开(公告)号：US08830803B2
公开(公告)日：2014-09-09
申请号：US12853523
申请日：2010-08-10
CPC分类号： G11B7/0906 , G11B7/08511 , G11B7/0903 , G11B7/0956 , G11B20/10009 , G11B20/10527 , G11B2007/0013
摘要： An optical drive apparatus that reproduces an optical disk having a land and a groove, the optical drive apparatus including a first tracking-error-signal generating unit that generates a first tracking error signal by using a DPD method, a second tracking-error-signal generating unit that generates a second tracking error signal by using a DPP method, a tracking servo unit that controls the optical system, and a determining unit that determines that an irradiation point of an optical beam is in a non-recorded area. The tracking servo unit switches over to a control based on the second tracking error signal in response to a result of determination by the determining unit during performing a control based on the first tracking error signal.
摘要翻译： 一种再现具有平台和凹槽的光盘的光驱动装置，所述光驱动装置包括通过使用DPD方法产生第一跟踪误差信号的第一跟踪误差信号产生单元，第二跟踪误差信号 生成单元，其通过使用DPP方法产生第二跟踪误差信号，控制光学系统的跟踪伺服单元以及确定光束的照射点在非记录区域中的确定单元。 响应于在执行基于第一跟踪误差信号的控制期间由确定单元确定的结果，跟踪伺服单元基于第二跟踪误差信号切换到控制。
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3.发明申请公开(公告)号：US20100296377A1
公开(公告)日：2010-11-25
申请号：US12864437
申请日：2009-01-27
IPC分类号： G11B27/36
CPC分类号： G11B7/268 , G01B11/06 , G11B7/00375 , G11B7/24038
摘要： A multilayer optical recording medium having three or more information recording layers is irradiated with a laser beam, and a first signal obtained from the reflected laser beam is subjected to a frequency filter. A second signal obtained by filtration through a high-pass filter is used to evaluate the characteristics of the multilayer optical recording medium. In this manner, even in a multilayer optical recording medium having three or more information recording layers, the influence of the variation of the thickness and material of the information recording layers and the influence of the variation of the thickness of a spacer layer can be clearly determined and evaluated.
摘要翻译： 用激光束照射具有三个以上信息记录层的多层光记录介质，对从反射激光束得到的第一信号进行频率滤波。 使用通过高通滤波器过滤获得的第二信号来评估多层光学记录介质的特性。 以这种方式，即使在具有三个或更多个信息记录层的多层光学记录介质中，信息记录层的厚度和材料的变化的影响以及间隔层的厚度的变化的影响也可以是清楚的 确定和评估。
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公开(公告)号：US08107349B2
公开(公告)日：2012-01-31
申请号：US12585378
申请日：2009-09-14
IPC分类号： G11B7/00
CPC分类号： G11B7/1381 , G11B7/0909 , G11B7/131 , G11B7/1374 , G11B7/1378 , G11B2007/0013
摘要： An optical head device (optical head) for a multi-layered optical recording medium has a focus control mechanism that makes use of astigmatism. The focus control mechanism has a sensor lens that includes a cylindrical lens. The focus control mechanism causes a light beam having passed through the sensor lens to have astigmatism, thereby being focused linearly in the Y direction on a front focal line located closer to the sensor lens and focused linearly in the X direction at a rear focal line located farther therefrom. The optical head also includes a photodetector which is disposed between the front focal line and the rear focal line to detect a focal position from the shape of a light beam. At the position of the front focal line, a shield plate with a window portion is disposed. The window portion has a size so as to allow the focal line to pass therethrough and shield stray light reflected from an unfocused recording layer.
摘要翻译： 用于多层光学记录介质的光学头装置（光学头）具有利用散光的聚焦控制机构。 聚焦控制机构具有包括柱面透镜的传感器透镜。 聚焦控制机构使已经通过传感器透镜的光束具有散光，从而在位于更靠近传感器透镜的前焦点上沿Y方向线性聚焦，并且在位于 距离更远 光头还包括一个光电检测器，它设置在前焦线和后焦线之间，以从光束的形状检测焦点位置。 在前焦线的位置设置有具有窗口部分的屏蔽板。 窗口部分具有允许焦线穿过其中并且屏蔽从未聚焦的记录层反射的杂散光的尺寸。
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公开(公告)号：US08542565B2
公开(公告)日：2013-09-24
申请号：US12903656
申请日：2010-10-13
申请人： Tetsuya Nishiyama
发明人： Tetsuya Nishiyama
IPC分类号： G11B7/00
CPC分类号： G11B7/0906
摘要： An optical drive apparatus includes: a phase-difference detection-signal generating unit that generates PEDr based on PEROd and PEFOd obtained by delaying a phase-lead output signal indicating a phase lead amount of DA with respect to DB and X that is changed to high at a timing at which NAND of the DA and the DB is changed from high to low and changed to low at a timing at which OR of the DA and the DB is changed from high to low, and generates PADr based on PAROd and PAFOd obtained by delaying a phase-lag output signal indicating a phase lag amount of the DA with respect to the DB by a predetermined time and the X; and a DPD signal generating unit that generates a phase difference signal indicating a phase difference between the DA and the DB based on the PEDr and the PADr, and generates a DPD signal based on the phase difference signal.
摘要翻译： 一种光驱动装置，包括：相位差检测信号生成单元，其基于通过延迟指示相对于DB的相位超前量DA的相位超前输出信号而获得的PEROd和PEFOd，所述相位引导输出信号变为高 在DA和DB的NAND从高变为低的时刻，在DA和DB的OR从高变为低的时刻变为低，并且基于获得的PAROd和PAFOd生成PADr 通过将指示DA相对于DB的相位滞后量的相位延迟输出信号延迟预定时间和X; 以及DPD信号生成单元，其基于PEDr和PADr生成指示DA和DB之间的相位差的相位差信号，并且基于该相位差信号生成DPD信号。
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公开(公告)号：US20100103799A1
公开(公告)日：2010-04-29
申请号：US12585378
申请日：2009-09-14
IPC分类号： G11B7/135
CPC分类号： G11B7/1381 , G11B7/0909 , G11B7/131 , G11B7/1374 , G11B7/1378 , G11B2007/0013
摘要： An optical head device (optical head) for a multi-layered optical recording medium has a focus control mechanism that makes use of astigmatism. The focus control mechanism has a sensor lens that includes a cylindrical lens. The focus control mechanism causes a light beam having passed through the sensor lens to have astigmatism, thereby being focused linearly in the Y direction on a front focal line located closer to the sensor lens and focused linearly in the X direction at a rear focal line located farther therefrom. The optical head also includes a photodetector which is disposed between the front focal line and the rear focal line to detect a focal position from the shape of a light beam. At the position of the front focal line, a shield plate with a window portion is disposed. The window portion has a size so as to allow the focal line to pass therethrough and shield stray light reflected from an unfocused recording layer.
摘要翻译： 用于多层光学记录介质的光学头装置（光学头）具有利用散光的聚焦控制机构。 聚焦控制机构具有包括柱面透镜的传感器透镜。 聚焦控制机构使已经通过传感器透镜的光束具有散光，从而在位于更靠近传感器透镜的前焦点上沿Y方向线性聚焦，并且在位于 距离更远 光头还包括一个光电检测器，它设置在前焦线和后焦线之间，以从光束的形状检测焦点位置。 在前焦线的位置设置有具有窗口部分的屏蔽板。 窗口部分具有允许焦线穿过其中并且屏蔽从未聚焦的记录层反射的杂散光的尺寸。
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公开(公告)号：US20090219797A1
公开(公告)日：2009-09-03
申请号：US12117178
申请日：2008-05-08
申请人： Masayuki Tahara , Kenji Nanba , Tetsuya Nishiyama
发明人： Masayuki Tahara , Kenji Nanba , Tetsuya Nishiyama
IPC分类号： G11B20/10
CPC分类号： G11B20/10194 , G11B7/0053 , G11B7/1263 , G11B7/13 , G11B20/10027 , G11B20/10037 , G11B20/10046 , G11B20/14 , G11B2020/1239 , G11B2220/2537
摘要： Pulses that are generated from multiple analog input signals are sampled, and signal elements contained in the analog signals are extracted accurately using the said sampling pulses. Binarization circuits where analog input signals A, B, C, and D are converted into pulse signals; a logic operation circuit that generates a sampling pulse upon receiving the input of the 4 pulse signals; and a sample-and-hold circuit samples and holds an input RF signal based on the sampling pulse in order to extract accurately signal elements contained in said RF signal by means of sampling of the RF signal.
摘要翻译： 从多个模拟输入信号产生的脉冲被采样，并且使用所述采样脉冲精确地提取包含在模拟信号中的信号元素。 将模拟输入信号A，B，C和D转换为脉冲信号的二值化电路; 逻辑运算电路，在接收到4个脉冲信号的输入时产生采样脉冲; 并且采样和保持电路基于采样脉冲采样和保持输入RF信号，以通过RF信号的采样精确地提取包含在所述RF信号中的信号元素。
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8.发明授权Wireless power receiver, wireless power transmission system, and power controller 有权无线电源接收器，无线电力传输系统和电源控制器公开(公告)号：US09356449B2
公开(公告)日：2016-05-31
申请号：US13270048
申请日：2011-10-10
摘要： A wireless power receiver receives, at a receiving coil, AC power fed from a feeding coil by wireless using a magnetic field resonance phenomenon between the feeding coil and receiving coil. The wireless power receiver includes a loading circuit and a power controller. The loading circuit includes a loading coil that is magnetically coupled to the receiving coil to receive the AC power from the receiving coil and a load that receives the AC power supplied from the loading coil. The power controller includes a measurement unit and an adjustment unit. The measurement unit measures the receiving power of the load. The adjustment unit brings the receiving power close to its maximum value by changing the impedance of the loading circuit.
摘要翻译： 无线电力接收器在接收线圈处接收通过馈电线圈和接收线圈之间的磁场共振现象通过无线从馈电线圈馈送的AC电力。 无线电力接收机包括负载电路和功率控制器。 负载电路包括加载线圈，该负载线圈磁耦合到接收线圈以接收来自接收线圈的AC电力以及接收从负载线圈供应的AC电力的负载。 功率控制器包括测量单元和调节单元。 测量单元测量负载的接收功率。 调整单元通过改变负载电路的阻抗使接收功率接近其最大值。
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公开(公告)号：US08193958B2
公开(公告)日：2012-06-05
申请号：US12117178
申请日：2008-05-08
申请人： Masayuki Tahara , Kenji Namba , Tetsuya Nishiyama
发明人： Masayuki Tahara , Kenji Namba , Tetsuya Nishiyama
IPC分类号： H03M1/00
CPC分类号： G11B20/10194 , G11B7/0053 , G11B7/1263 , G11B7/13 , G11B20/10027 , G11B20/10037 , G11B20/10046 , G11B20/14 , G11B2020/1239 , G11B2220/2537
摘要： Pulses that are generated from multiple analog input signals are sampled, and signal elements contained in the analog signals are extracted accurately using the said sampling pulses. Binarization circuits where analog input signals A, B, C, and D are converted into pulse signals; a logic operation circuit that generates a sampling pulse upon receiving the input of the 4 pulse signals; and a sample-and-hold circuit samples and holds an input RF signal based on the sampling pulse in order to extract accurately signal elements contained in said RF signal by means of sampling of the RF signal.
摘要翻译： 从多个模拟输入信号产生的脉冲被采样，并且使用所述采样脉冲精确地提取包含在模拟信号中的信号元素。 将模拟输入信号A，B，C和D转换为脉冲信号的二值化电路; 逻辑运算电路，在接收到4个脉冲信号的输入时产生采样脉冲; 并且采样和保持电路基于采样脉冲采样和保持输入RF信号，以通过RF信号的采样精确地提取包含在所述RF信号中的信号元素。
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公开(公告)号：US08189436B2
公开(公告)日：2012-05-29
申请号：US12546174
申请日：2009-08-24
申请人： Tetsuya Nishiyama
发明人： Tetsuya Nishiyama
IPC分类号： G11B7/00
CPC分类号： G11B7/0903 , G11B7/094 , G11B7/131 , G11B7/1353 , G11B2007/0013
摘要： An optical drive device generates a first push-pull signal and a first sum signal based on a light receiving amount in two light receiving areas of which each width in a signal light tangent direction is smaller than a diameter of a spot of signal light, generates a first normalized push-pull signal by normalizing the first push-pull signal by using the first sum signal, and generates a tracking error signal based on the first normalized push-pull signal.
摘要翻译： 光驱动装置基于信号光切线方向上的每个宽度小于信号光点直径的两个光接收区域中的光接收量产生第一推挽信号和第一和信号，产生 第一归一化推挽信号，通过使用第一和信号对第一推挽信号进行归一化，并且基于第一归一化推挽信号产生跟踪误差信号。
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