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    • 2. 发明授权
    • Information recording and reproducing apparatus
    • 信息记录和再现装置
    • US07218584B2
    • 2007-05-15
    • US10851219
    • 2004-05-24
    • Yoshitaka ShimodaAkira ShimizuYuji Tawaragi
    • Yoshitaka ShimodaAkira ShimizuYuji Tawaragi
    • G11B7/00
    • G11B27/24G11B20/1403G11B2220/216G11B2220/218G11B2220/2562H03L7/081H03L7/183
    • An information recording and reproducing apparatus performs information recording and reproducing on an optical disc having a recording track wobbled by a predetermined frequency. The apparatus includes an optical pickup which irradiates a laser light on the optical disc and receives the laser light reflected by the optical disc to output an electric signal corresponding to the laser light, a push-pull signal generating unit which includes a sample-hold unit and generates the sample-hold push-pull signal and the non-sample-hold push-pull signal from the electric signal, a sample-hold circuit which samples and holds the push-pull signal, a recording clock generating unit which generates a recording clock synchronized with the wobble signal based on the sample-hold push-pull signal during recording and based on the non-sample-hold push-pull signal during reproduction, and a phase adjusting unit which adjusts the phases of the non-sample-hold push-pull signal and the sample-hold push-pull signal.
    • 信息记录和再现装置在具有以预定频率摆动的记录磁道的光盘上执行信息记录和再现。 该装置包括:光学拾取器,其将激光照射在光盘上并接收由光盘反射的激光以输出与激光相对应的电信号;推挽信号产生单元,其包括采样保持单元 并且从电信号产生采样保持推挽信号和非采样保持推挽信号,采样并保持推挽信号的采样保持电路,产生记录的记录时钟产生单元 基于记录期间的采样保持推挽信号和基于重放期间的非采样保持推挽信号的摆动信号同步的时钟以及调整非采样保持的相位的相位调整单元 推挽信号和采样保持推挽信号。
    • 4. 发明授权
    • Pre-pit signal detecting apparatus and information recording apparatus
    • 预凹坑信号检测装置和信息记录装置
    • US06341110B1
    • 2002-01-22
    • US09387897
    • 1999-09-01
    • Yuji Tawaragi
    • Yuji Tawaragi
    • G11B700
    • G11B7/005G11B7/00745
    • 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.
    • 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。
    • 5. 发明授权
    • Recording medium type determining apparatus and method for determining presence of wobble on a recording medium
    • 用于确定记录介质上摆动存在的记录介质类型确定装置和方法
    • US07362681B2
    • 2008-04-22
    • US10624886
    • 2003-07-23
    • Yuji Tawaragi
    • Yuji Tawaragi
    • G11B7/00
    • G11B19/125G11B7/0037G11B7/0053G11B2007/0006
    • 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.
    • 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。
    • 8. 发明授权
    • Power theft inspection apparatus and power theft inspection method
    • 电力盗窃检查装置和电源盗窃检查方法
    • US09476917B2
    • 2016-10-25
    • US14383864
    • 2012-03-30
    • Yuji Tawaragi
    • Yuji Tawaragi
    • G01R31/40G01R19/00H02J5/00H02J7/02G01R21/00G01R31/02
    • G01R19/0092G01R21/00G01R31/02G01R31/40H02J5/005H02J7/025H02J50/12H02J50/60H02J50/80
    • 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.
    • 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。
    • 9. 发明授权
    • Capacitance detector
    • 电容检测器
    • US08253426B2
    • 2012-08-28
    • US12738240
    • 2007-10-18
    • Kiyoshi TateishiYuji Tawaragi
    • Kiyoshi TateishiYuji Tawaragi
    • G01R27/26
    • G01D5/24G01P15/125G11B9/02G11B9/06G11B11/08
    • 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.
    • 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。
    • 10. 发明申请
    • CAPACITANCE DETECTOR
    • 电容检测器
    • US20100231239A1
    • 2010-09-16
    • US12738240
    • 2007-10-18
    • Kiyoshi TateishiYuji Tawaragi
    • Kiyoshi TateishiYuji Tawaragi
    • G01R27/26
    • G01D5/24G01P15/125G11B9/02G11B9/06G11B11/08
    • 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.
    • 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。