公开(公告)号：US5471446A

公开(公告)日：1995-11-28

申请号：US664125

申请日：1991-03-04

申请人： Yuji Tawaragi ,  Satoshi Kusano ,  Toshio Suzuki ,  Noriko Obitsu

发明人： Yuji Tawaragi ,  Satoshi Kusano ,  Toshio Suzuki ,  Noriko Obitsu

IPC分类号： G11B7/095 ,  G11B7/09 ,  G11B7/00

CPC分类号： G11B7/09 ,  G11B7/0941 ,  G11B7/0943

摘要： An optical disk player having a tracking servo apparatus and a focusing servo apparatus. By amplifying a focusing error at a predetermined gain and adding it to a tracking error, the rolling which occurs due to a mass balance distortion of a pickup is electrically suppressed. Thus, an adverse influence on the tracking servo by the rolling upon focusing driving can be prevented.

摘要翻译： 一种具有跟踪伺服装置和聚焦伺服装置的光盘播放机。 通过以预定增益放大聚焦误差并将其加到跟踪误差中，由于拾取器的质量平衡失真而发生的滚动被电气地抑制。 因此，可以防止通过聚焦驱动时的滚动对跟踪伺服的不利影响。

公开(公告)号：US5164646A

公开(公告)日：1992-11-17

申请号：US665288

申请日：1991-03-05

申请人： Yuji Tawaragi ,  Satoshi Kusano ,  Toshio Suzuki ,  Noriko Obitsu

发明人： Yuji Tawaragi ,  Satoshi Kusano ,  Toshio Suzuki ,  Noriko Obitsu

IPC分类号： G11B7/085 ,  G11B7/09

CPC分类号： G11B7/0906 ,  G11B7/08517

摘要： A tracking servo system of disk player uses the time difference detection method for generating the tracking error signal. A time gate is provided for detecting the zero-crossing of the tracking error level in an on-track condition during a jumping operation. As the result, negative effects due to unstableness in timing of the zero-crossing can be eliminated.

公开(公告)号：US5130963A

公开(公告)日：1992-07-14

申请号：US660951

申请日：1991-02-26

申请人： Satoshi Kusano ,  Toshio Suzuki ,  Yuji Tawaragi ,  Noriko Obitsu

发明人： Satoshi Kusano ,  Toshio Suzuki ,  Yuji Tawaragi ,  Noriko Obitsu

IPC分类号： G11B7/095

CPC分类号： G11B7/0956

摘要： An optical disk player using quadrant type photodetector as light receiving means. The phase difference output by the time difference detection method is issued as a tracking error, and a DC component of differential output by the push-pull method is issued as a tilt error, and zero cross of said differential output is detected. By using this detection output for the detection of zero-cross timing on off-track, stable operation of the tracking servo unit is ensured.

公开(公告)号：US5206848A

公开(公告)日：1993-04-27

申请号：US658752

申请日：1991-02-21

申请人： Satoshi Kusano ,  Shinichi Takahashi ,  Toshio Suzuki ,  Yuji Tawaragi ,  Noriko Obitsu

发明人： Satoshi Kusano ,  Shinichi Takahashi ,  Toshio Suzuki ,  Yuji Tawaragi ,  Noriko Obitsu

IPC分类号： G11B7/09 ,  G11B7/095

CPC分类号： G11B7/0956 ,  G11B7/0906

摘要： An optical disk player provided with tilt servo unit. A quadrant type photodetector is used as disk tilt detecting means, and the push-pull output is issued as a disk tilt detecting signal. By simultaneous use of the photodetector of the pickup, there is no need to use special-purpose tilt sensor, and this contributes to compact design of the pickup and to the reduction of manufacturing cost.

公开(公告)号：US06341110B1

公开(公告)日：2002-01-22

申请号：US09387897

申请日：1999-09-01

申请人： Yuji Tawaragi

发明人： Yuji Tawaragi

IPC分类号： G11B700

CPC分类号： G11B7/005 ,  G11B7/00745

摘要： A pre-pit signal detecting apparatus is used in an information recording apparatus for recording record information onto a record medium on which record control information for controlling a recording operation is recorded in advance by forming a pre-pit on the record medium, and detects a pre-pit signal corresponding to the pre-pit when the information recording apparatus records the record information onto the record medium. The pre-pit signal detecting apparatus is provided with: an extracting device, to which a reproduction signal of the record medium is inputted, for extracting and outputting a predetermined signal component, which is used for detecting the pre-pit signal, out of the inputted reproduction signal; an input controlling device for inputting a standard signal, which is set in advance, to the extracting device in place of the reproduction signal before the pre-pit signal is detected and inputting the reproduction signal to the extracting device when the pre-pit signal is detected; a phase difference detecting device for comparing the standard signal outputted by the extracting device with the standard signal inputted by the input controlling device, and for detecting a phase difference generated between the compared standard signals due to an extracting operation of the extracting device before the pre-pit signal is detected; and a pre-pit detecting device for detecting the pre-pit signal on the basis of the extracted predetermined signal component while canceling the detected phase difference.

摘要翻译： 在用于在记录介质上记录记录信息的预凹坑信号检测装置用于预先记录记录操作的记录控制信息，在该记录介质上记录预先记录在记录介质上的预凹坑， 当信息记录装置将记录信息记录到记录介质上时，与凹坑相对应的预凹坑信号。 前置凹坑信号检测装置具有：提取装置，其中输入记录介质的再现信号，用于提取并输出用于检测预制凹坑信号的预定信号分量， 输入的再现信号; 输入控制装置，用于在检测到预凹坑信号之前，将预先设定的标准信号输入到提取装置，并将其输入到提取装置，当预凹坑信号为 检测到 相位差检测装置，用于将提取装置输出的标准信号与由输入控制装置输入的标准信号进行比较，并且用于检测由于在预处理之前提取装置的提取操作而在比较的标准信号之间产生的相位差 检测到-pit信号; 以及用于在取消检测到的相位差的同时基于所提取的预定信号分量来检测预制凹坑信号的预凹坑检测装置。

公开(公告)号：US07362681B2

公开(公告)日：2008-04-22

申请号：US10624886

申请日：2003-07-23

申请人： Yuji Tawaragi

发明人： Yuji Tawaragi

IPC分类号： G11B7/00

CPC分类号： G11B19/125 ,  G11B7/0037 ,  G11B7/0053 ,  G11B2007/0006

摘要： A push-pull signal Spp fetched with tracking open is smoothed to a smoothing signal Spp to remove signal components generated wobbling due to radial runout, and the smoothing signal is binarized to compute an autocorrelation value in the autocorrelation computing circuit 210. This computing is made by multiplying the binarized signal by a signal delayed by the half cycle and sign-negated to compute the integrated value, and the integrated value output signal Dint is generated. A maximum value of the integrated value output signal Dint within a predetermined period of time is computed by the maximum value holding circuit 220 to output a maximum value output signal Dout. Depending on the amplitude of the maximum value signal Dout, the CPU 105 determines whether the recording medium is a writable one or read only one. Wobble determination can be made keeping tracking open, and a type of a recording medium is carried out accurately.

摘要翻译： 将跟踪打开的推挽信号Spp平滑化为平滑信号Spp，以消除由于径向跳动而产生的摆动的信号分量，并将平滑信号二值化以计算自相关计算电路210中的自相关值。 通过将二进制化信号乘以延迟半周期的信号并进行符号否定来计算积分值，并生成积分值输出信号Dint来进行该计算。 通过最大值保持电路220计算预定时间段内的积分值输出信号Dint的最大值，以输出最大值输出信号Dout。 根据最大值信号Dout的幅度，CPU105判断记录介质是可写的还是只读的。 可以进行摆动确定以保持跟踪打开，并且准确地执行记录介质的类型。

公开(公告)号：US6137756A

公开(公告)日：2000-10-24

申请号：US159859

申请日：1998-09-24

申请人： Masayoshi Yoshida ,  Yoshitaka Shimoda ,  Yuji Tawaragi

发明人： Masayoshi Yoshida ,  Yoshitaka Shimoda ,  Yuji Tawaragi

IPC分类号： G11B20/10 ,  G11B7/00 ,  G11B7/0045 ,  G11B7/007 ,  G11B19/04 ,  G11B20/18 ,  G11B27/10 ,  G11B27/19 ,  G11B27/24 ,  G11B27/30 ,  G11B27/36 ,  G11B5/09

CPC分类号： G11B27/24 ,  G11B19/04 ,  G11B20/1833 ,  G11B27/10 ,  G11B27/3027 ,  G11B27/36 ,  G11B2220/218 ,  G11B2220/2562 ,  G11B7/0045 ,  G11B7/007

摘要： Provided are a method and apparatus for detecting an occurrence of erroneous recording in recording information to be recorded into a DVD-R. The information consists of a plurality of ECC blocks each including a predetermined number of recording sectors. In the DVD-R, synchronizing information, accomplished by wobbling of groove tracks, and positional information, such as pre-pits, are previously recorded. Both the synchronizing information and the positional information are detected, then a synchronizing timing signal showing a time at which the synchronizing information is detected and a positional timing signal showing a time at which each ECC block is assigned to be recorded are produced. The synchronizing timing signal produced during an interval defined by the successive two positional timing signals is counted in number, and a state signal for estimating the occurrence of the erroneous recording is produced on comparison between the counted number and the predetermined number of the recording sectors. The method and apparatus are suitable for information recording method and apparatus.

摘要翻译： 提供了一种用于检测要记录到DVD-R中的记录信息中的错误记录的发生的方法和装置。 信息由包括预定数量的记录扇区的多个ECC块组成。 在DVD-R中，预先记录了通过摆动凹槽轨道实现的同步信息和诸如预凹坑的位置信息。 检测同步信息和位置信息，然后产生表示检测同步信息的时间的同步定时信号和表示分配每个ECC块的记录时间的位置定时信号。 在由连续两个位置定时信号定义的间隔期间产生的同步定时信号以数量进行计数，并且在计数数与预定数量的记录扇区之间进行比较，产生用于估计错误记录的发生的状态信号。 该方法和装置适用于信息记录方法和装置。

公开(公告)号：US09476917B2

公开(公告)日：2016-10-25

申请号：US14383864

申请日：2012-03-30

申请人： Yuji Tawaragi

发明人： Yuji Tawaragi

IPC分类号： G01R31/40 ,  G01R19/00 ,  H02J5/00 ,  H02J7/02 ,  G01R21/00 ,  G01R31/02

CPC分类号： G01R19/0092 ,  G01R21/00 ,  G01R31/02 ,  G01R31/40 ,  H02J5/005 ,  H02J7/025 ,  H02J50/12 ,  H02J50/60 ,  H02J50/80

摘要： A power theft inspection apparatus (100) is mounted on a power transmitting apparatus (10) which has a power transmission unit (13) and a power supply unit (12) configured to supply alternating current (AC) power to the power transmission unit. The power theft inspection apparatus has a controlling device (101) configured to (i) control the short-circuiting device (SW1, SW2) to electrically cut off the power transmission unit from the power supply unit and to short-circuit the input unit of the power transmission unit, and further (ii) transmit, to the power receiving apparatus (20), a signal indicating a request to open the power reception unit (23), upon power theft inspection, and a determining device (101) configured to determine whether or not there is power theft according to current detected by a current detecting device (102) upon the power theft inspection.

摘要翻译： 电力盗窃检查装置（100）安装在具有动力传递单元（13）的动力传递装置（10）和被配置为向动力传递单元提供交流（AC）电力的电源单元（12）。 电力盗窃检查装置具有控制装置（101），其被配置为（i）控制短路装置（SW1，SW2），以将电力传输单元从电源单元切断并使输入单元短路 以及（ii）在电力盗窃检查时向所述电力接收装置（20）发送指示打开所述电力接收单元（23）的请求的信号，以及确定装置（101），被配置为 根据电力检测装置（102）检测到的电流，判定是否存在电力盗窃。

公开(公告)号：US08253426B2

公开(公告)日：2012-08-28

申请号：US12738240

申请日：2007-10-18

申请人： Kiyoshi Tateishi ,  Yuji Tawaragi

发明人： Kiyoshi Tateishi ,  Yuji Tawaragi

IPC分类号： G01R27/26

CPC分类号： G01D5/24 ,  G01P15/125 ,  G11B9/02 ,  G11B9/06 ,  G11B11/08

摘要： A capaciatance detector is provided, which outputs an electric signal dependent on the capacitance present on an object to be measured. The capaciatance detector includes a measurement terminal to be disposed in contact with or in proximity to the object being measured; an impedance conversion circuit connected to the measurement terminal to form a resonant circuit; a reference phase oscillator for supplying a reference phase signal at a constant frequency to the resonant circuit; phase comparison means for outputting, as a capacitance detected signal, a phase difference signal indicative of the phase difference between a resonant signal, which is extracted from the resonant circuit in response to the reference phase signal being applied to the resonant circuit, and the reference phase signal; and resonance frequency regulation means for regulating the resonance frequency of the resonant circuit based on the phase difference signal.

摘要翻译： 提供电容检测器，其根据存在于被测量对象上的电容输出电信号。 电容检测器包括测量端子，其被设置为与被测量物体接触或接近; 连接到测量端子以形成谐振电路的阻抗转换电路; 参考相位振荡器，用于以恒定频率向谐振电路提供参考相位信号; 相位比较装置，用于作为电容检测信号输出表示响应于施加到谐振电路的参考相位信号从谐振电路提取的谐振信号和参考电压之间的相位差的相位差信号 相位信号; 以及用于基于相位差信号调节谐振电路的谐振频率的谐振频率调节装置。

公开(公告)号：US20100231239A1

公开(公告)日：2010-09-16

申请号：US12738240

申请日：2007-10-18

申请人： Kiyoshi Tateishi ,  Yuji Tawaragi

发明人： Kiyoshi Tateishi ,  Yuji Tawaragi

IPC分类号： G01R27/26

CPC分类号： G01D5/24 ,  G01P15/125 ,  G11B9/02 ,  G11B9/06 ,  G11B11/08

摘要： A capaciatance detector is provided, which outputs an electric signal dependent on the capacitance present on an object to be measured. The capaciatance detector includes a measurement terminal to be disposed in contact with or in proximity to the object being measured; an impedance conversion circuit connected to the measurement terminal to form a resonant circuit; a reference phase oscillator for supplying a reference phase signal at a constant frequency to the resonant circuit; phase comparison means for outputting, as a capacitance detected signal, a phase difference signal indicative of the phase difference between a resonant signal, which is extracted from the resonant circuit in response to the reference phase signal being applied to the resonant circuit, and the reference phase signal; and resonance frequency regulation means for regulating the resonance frequency of the resonant circuit based on the phase difference signal.

摘要翻译： 提供电容检测器，其根据存在于被测量对象上的电容输出电信号。 电容检测器包括测量端子，其被设置为与被测量物体接触或接近; 连接到测量端子以形成谐振电路的阻抗转换电路; 参考相位振荡器，用于以恒定频率向谐振电路提供参考相位信号; 相位比较装置，用于作为电容检测信号输出表示响应于施加到谐振电路的参考相位信号从谐振电路提取的谐振信号和参考电压之间的相位差的相位差信号 相位信号; 以及用于基于相位差信号调节谐振电路的谐振频率的谐振频率调节装置。