公开(公告)号：US08130002B2

公开(公告)日：2012-03-06

申请号：US12738222

申请日：2007-10-18

申请人： Kiyoshi Tateishi ,  Tomotaka Yabe

发明人： Kiyoshi Tateishi ,  Tomotaka Yabe

IPC分类号： G01R27/04

CPC分类号： G11B9/02 ,  G11B9/06 ,  G11B11/08

摘要： A device for detecting polarization direction of a ferroelectric is provided. From a measurement signal provided through a probe disposed in contact with or near the surface of a ferroelectric, a demodulation means generates a detection signal having a signal level corresponding to a capacitance change of the ferroelectric due to application of an alternating electric field to a capacitor component formed in the ferroelectric directly below the probe. A synchronous detection means performs synchronous detection of the detection signal based on a synchronous signal and generates a polarization direction detection signal corresponding to the polarization direction of the ferroelectric. A pseudo-noise signal generation means generates a pseudo-noise signal with the same frequency as that of the electric field signal and a different phase and amplitude therefrom. The demodulation means includes a noise component removal means that removes noise components in the measurement signal through signal arithmetic processing with the pseudo-noise signal.

摘要翻译： 提供一种用于检测铁电体的极化方向的装置。 从通过与铁电体的表面接触或接近设置的探针提供的测量信号，解调装置产生具有对应于铁电体的电容变化的信号电平的检测信号，这是由于向电容器施加交变电场 在探针下方的铁电体中形成的部件。 同步检测装置基于同步信号执行检测信号的同步检测，并产生与铁电体的偏振方向对应的偏振方向检测信号。 伪噪声信号产生装置产生具有与电场信号相同频率的伪噪声信号，并且产生与其不同的相位和幅度。 解调装置包括噪声分量去除装置，其通过具有伪噪声信号的信号运算处理来去除测量信号中的噪声分量。

公开(公告)号：US08072866B2

公开(公告)日：2011-12-06

申请号：US11885406

申请日：2006-03-03

申请人： Kiyoshi Tateishi ,  Michikazu Hashimoto

发明人： Kiyoshi Tateishi ,  Michikazu Hashimoto

IPC分类号： G11B7/00

CPC分类号： G03H1/00 ,  G03H2001/0066 ,  G06T7/74

摘要： A marker selection method includes: a marker generation step for generating a marker defining a position reference when recording data according to the modulation rule of the hologram recording/reproduction; a calculation step for calculating a correlation value indicating the correlation between a template image indicating a maker and each of a first verification image containing the marker shifted by a predetermined pixel and a second verification image containing data; and a selection step for selecting such a marker that the peak of the correlation value in the first verification image becomes greater than the peak of the correlation value in the second verification image. The selected marker is used as marker data in a marker generator in a recording processing circuit during recoding and as template data of the template matching processing circuit in the reproduction processing circuit during reproduction.

摘要翻译： 标记选择方法包括：标记生成步骤，用于在根据全息图记录/再现的调制规则记录数据时产生定义位置参考的标记; 用于计算表示指示壶和各自含有由预定像素和包含数据的第二验证图像移位标记的第一验证图像的模板图像之间的相关性的相关值的计算步骤; 以及选择步骤，用于选择这样的标记，使得第一验证图像中的相关值的峰值变得大于第二验证图像中的相关值的峰值。 所选择的标记在重新编码期间用作记录处理电路中的标记生成器中的标记数据，并且在再现期间用作再现处理电路中的模板匹配处理电路的模板数据。

公开(公告)号：US07755820B2

公开(公告)日：2010-07-13

申请号：US10594531

申请日：2005-03-15

申请人： Kiyoshi Tateishi ,  Michikazu Hashimoto

发明人： Kiyoshi Tateishi ,  Michikazu Hashimoto

IPC分类号： G02B5/32

CPC分类号： G11B7/128 ,  G03H2210/22 ,  G11B7/0065 ,  G11B7/00736

摘要： To provide a two-dimensional modulation method for hologram recording which is capable of preventing degradation of reconstructing performance when positional shift occurs and which enables information to be stably recorded or reproduced. The hologram recording carrier employs the two-dimensional modulation method for hologram recording for generating coherent light containing therein page data through a spatial light modulator having a plurality of pixels two-dimensionally arranged therein, in which the pixels of the spatial light modulator are partitioned into a plurality of blocks consisting of m pixels adjacent to each other (where m=an integral number), and a boundary portion which has a width having at least the width of one pixel of the spatial light modulator or of one pixel of an image detecting sensor used to reproduce the recorded page data and the distance between the adjacent pixels in each of the blocks, and each of which shields light is provided between the adjacent blocks.

摘要翻译： 提供全息记录的二维调制方法，其能够防止在发生位置偏移时重建性能的劣化，并且能够使信息稳定地记录或再现。 全息记录载体采用全息记录的二维调制方法，通过具有二维排列在其中的多个像素的空间光调制器产生其中包含页数据的相干光，其中空间光调制器的像素被分割成 由彼此相邻的m个像素（其中m =整数）组成的多个块，以及具有至少具有空间光调制器的一个像素的宽度或图像检测的一个像素的宽度的边界部分 用于再现记录的页数据的传感器和每个块中的相邻像素之间的距离，并且每个块中的每个屏蔽光都被提供在相邻块之间。

公开(公告)号：US20100033159A1

公开(公告)日：2010-02-11

申请号：US12532129

申请日：2007-03-20

申请人： Kiyoshi Tateishi ,  Takanori Maeda ,  Hideki Kobayashi ,  Tomotaka Yabe

发明人： Kiyoshi Tateishi ,  Takanori Maeda ,  Hideki Kobayashi ,  Tomotaka Yabe

IPC分类号： G01N27/00

CPC分类号： G11B9/02 ,  G11B9/06

摘要： A physical properties detection device comprising a probe to be placed near or touching a surface of a ferroelectric; an oscillation loop including the probe and capacitance within the ferroelectric; and detection means for detecting a physical properties of the ferroelectric on the basis of a frequency variation of a measurement signal generated in the oscillation loop, the frequency variation accompanying application of an alternating electric field to the ferroelectric; and the physical properties detection device is further comprising frequency conversion means for converting the frequency of the measurement signal to a low frequency and outputting the resulting signal as a converted measurement signal; frequency control means for controlling the frequency of the converted measurement signal so as to match a target frequency; frequency detection means for generating a frequency detection signal that has a signal level corresponding to the frequency of the converted measurement signal; and synchronous detection means for synchronously detecting the frequency detection signal on the basis of a synchronization signal.

摘要翻译： 一种物理特性检测装置，包括放置在铁电体表面附近或接触铁电体的探针; 包括铁电体内探针和电容的振荡回路; 以及检测装置，用于基于在振荡环路中产生的测量信号的频率变化，伴随向铁电体施加交变电场的频率变化来检测铁电体的物理性质; 物理特性检测装置还包括频率转换装置，用于将测量信号的频率转换为低频，并将所得信号作为转换的测量信号输出; 频率控制装置，用于控制转换的测量信号的频率以便匹配目标频率; 频率检测装置，用于产生具有与转换的测量信号的频率对应的信号电平的频率检测信号; 以及用于基于同步信号同步检测频率检测信号的同步检测装置。

公开(公告)号：US20090086595A1

公开(公告)日：2009-04-02

申请号：US12295563

申请日：2007-03-29

申请人： Kazuo Takahashi ,  Kiyoshi Tateishi

发明人： Kazuo Takahashi ,  Kiyoshi Tateishi

IPC分类号： G11B7/00

CPC分类号： G11B7/0901 ,  G11B7/0065 ,  G11B7/083 ,  G11B7/095

摘要： A focal follow-up control circuit performs follow-up control for a focal point on the data recording/reproducing region by reciprocating an object lens provided in a pickup with respect to a rotating direction of a data recording/reproducing region of an optical disk. The focal follow-up control circuit outputs a focal follow-up deviation signal indicative of a deviation between a follow-up central position of the object lens and a movable neutral point to a spindle control circuit. The spindle control circuit carries out feedback control of a number of rotations of a spindle motor so as to bring this focal follow-up deviation signal to zero.

摘要翻译： 焦点跟随控制电路通过使设置在拾取器中的物镜相对于光盘的数据记录/再现区域的旋转方向往复运动，来对数据记录/再现区域上的焦点执行后续控制。 焦点跟踪控制电路输出表示物镜的跟随中心位置与可动中性点之间偏离主轴控制电路的焦点跟踪偏差信号。 主轴控制电路对主轴电动机进行多次转动的反馈控制，使该点跟踪偏差信号为零。

公开(公告)号：US07263040B2

公开(公告)日：2007-08-28

申请号：US10845445

申请日：2004-05-14

申请人： Kiyoshi Tateishi ,  Kazuo Takahashi

发明人： Kiyoshi Tateishi ,  Kazuo Takahashi

IPC分类号： G11B7/00

CPC分类号： G11B7/08523 ,  G11B7/0948 ,  G11B2007/0013

摘要： A controller includes a servo-controller for performing nonlinear and linear control of the read/write position according to an error signal to drive an actuator for driving the pickup; a switch for switching the servo-controller from open-mode to closed-mode according to the error signal; and an adjuster for adjusting the gains of the nonlinear and linear control so that the nonlinear control component is larger than the linear control component at the time of switching and the linear control component is larger than the nonlinear control component after the elapse of a predetermined time from the time of switching.

摘要翻译： 控制器包括伺服控制器，用于根据误差信号对读/写位置执行非线性和线性控制，以驱动用于驱动拾取器的致动器; 根据误差信号将伺服控制器从开路模式切换到闭合模式的开关; 以及用于调整非线性和线性控制的增益的调节器，使得非线性控制分量大于切换时的线性控制分量，并且线性控制分量大于经过预定时间之后的非线性控制分量 从切换的时候。

公开(公告)号：US07257056B2

公开(公告)日：2007-08-14

申请号：US10872412

申请日：2004-06-22

申请人： Kiyoshi Tateishi

发明人： Kiyoshi Tateishi

IPC分类号： G11B7/09

CPC分类号： G11B7/0906

摘要： In a tracking controller for an optical pickup, a photodetector having four light reception parts receives return light from an optical disc and outputs light detection electric signals. Predetermined addition and subtraction operations are performed on the light detection electric signals from the light reception parts. A phase comparator compares phases and outputs a pseudo radial contrast signal. Bringing into tracking servo control is performed based on the pseudo radial contrast signal.

摘要翻译： 在用于光学拾取器的跟踪控制器中，具有四个光接收部分的光电检测器接收来自光盘的返回光并输出光检测电信号。 对来自光接收部的光检测电信号进行预定的加法运算和减法运算。 相位比较器比较相位并输出伪径向对比度信号。 基于伪径向对比度信号进行跟踪伺服控制。

公开(公告)号：US06958966B2

公开(公告)日：2005-10-25

申请号：US10379678

申请日：2003-03-06

申请人： Kiyoshi Tateishi ,  Ichiro Sugai

发明人： Kiyoshi Tateishi ,  Ichiro Sugai

IPC分类号： G11B7/0037 ,  G11B7/00 ,  G11B7/095 ,  G11B19/247 ,  H02P5/00 ,  H02P29/00

CPC分类号： G11B19/247 ,  G11B7/095

摘要： An optical disc player having an optical pickup records and retrieves information on an optical disc while the optical disc is rotating. A rotation pulse is generated each time the optical disc rotates through a prescribed angle. A rotation frequency data representing a frequency of the rotation pulse is also generated. A servo processor performs servo processing for rotation control on the optical disc in accordance with the rotation frequency data. A sampling pulse generator performs computational processing on an input data signal to generate a sampling pulse. The sampling pulse generator also corrects the rotation frequency data based on a phase error between the sampling pulse and the rotation pulse to use a corrected rotation frequency data as the input data signal. Another servo processor performs servo processing for repetitive control on the optical pickup using the sampling pulse.

摘要翻译： 具有光学拾取器的光盘播放器在光盘旋转的同时在光盘上记录和检索信息。 每当光盘旋转规定角度时产生旋转脉冲。 也产生表示旋转脉冲的频率的旋转频率数据。 伺服处理器根据旋转频率数据执行用于光盘上的旋转控制的伺服处理。 采样脉冲发生器对输入数据信号执行计算处理以产生采样脉冲。 采样脉冲发生器还基于采样脉冲和旋转脉冲之间的相位误差校正旋转频率数据，以使用校正的旋转频率数据作为输入数据信号。 另一个伺服处理器使用采样脉冲对光拾取器进行重复控制的伺服处理。

公开(公告)号：US06741041B2

公开(公告)日：2004-05-25

申请号：US10445258

申请日：2003-05-27

申请人： Kiyoshi Tateishi ,  Mitsuru Sato

发明人： Kiyoshi Tateishi ,  Mitsuru Sato

IPC分类号： H05B3702

CPC分类号： H05B33/0851 ,  G11B7/126 ,  G11B7/1263

摘要： A power controller is provided which can control the emission power from a light source to follow an appropriate response property based on a target value. The power controller includes feedforward systems for allowing currents corresponding to target values set at target value setting units to be switched at a switching device and supplied as a power setting current to an adder. Also included are feedback systems for detecting the power of the laser beam emitted by a semiconductor laser serving as the light source and adjusting a feedback current to stabilize the deviation from the target values at a predetermined value. Further included are a switching device for allowing the target values to be switched and supplied to the aforementioned feedback systems, and the adder for adding a feedback current and the power setting current to thereby generate a drive current for driving the semiconductor laser. The switching devices are simultaneously switched upon changing the power of the laser beam in response to the target values, thereby implementing an appropriate response property allowing no ringing caused in the power upon the transient event.

摘要翻译： 提供了一种功率控制器，其可以控制来自光源的发射功率，以基于目标值遵循适当的响应特性。 功率控制器包括前馈系统，用于允许对应于在目标值设置单元设置的目标值的电流在开关装置处切换并作为功率设定电流提供给加法器。 还包括用于检测由用作光源的半导体激光器发射的激光束的功率的反馈系统，并且调整反馈电流以将偏离目标值的偏差稳定在预定值。 进一步包括用于允许将目标值切换并提供给上述反馈系统的开关装置，以及用于增加反馈电流和功率设定电流的加法器，从而产生用于驱动半导体激光器的驱动电流。 响应于目标值改变激光束的功率，同时切换开关装置，从而实现适当的响应特性，允许在瞬态事件时在电源中引起振铃。

公开(公告)号：US06738327B2

公开(公告)日：2004-05-18

申请号：US09836235

申请日：2001-04-18

申请人： Kiyoshi Tateishi ,  Masaki Kobayashi

发明人： Kiyoshi Tateishi ,  Masaki Kobayashi

IPC分类号： G11B700

CPC分类号： G11B7/0948 ,  G11B19/04 ,  G11B21/106

摘要： A servo control apparatus of an optical pickup includes an extractor for extracting an error signal from the read signal; a driver for changing the servo position; an equalizer for equalizing the error signal to generate a drive signal; a calculator for calculating an integral value of the error signal for each predetermined angular section of rotation; a memory for storing each of the integral values for one rotation of the recording medium; a detector to detect an occurrence of a dropout; a calculator for calculating a variation by comparing the integral value for an angular section of rotation where the dropout occurred with a stored integral value for the identical angular section of rotation prior to the occurrence of the dropout; and a controller for changing an equalization characteristics of the equalizer in accordance with the variation.

摘要翻译： 光拾取器的伺服控制装置包括一个提取器，用于从读取信号中提取误差信号; 用于改变伺服位置的驱动器; 均衡器，用于均衡误差信号以产生驱动信号; 计算器，用于计算每个预定角度旋转角度的误差信号的积分值; 存储器，用于存储记录介质的一次旋转的每个积分值; 检测器，用于检测出口的出现; 计算器，用于通过将发生所述压差的旋转角度的积分值与出现所述压差之前的相同角度旋转角度的积分值进行比较来计算变化; 以及用于根据变化改变均衡器的均衡特性的控制器。