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1. 发明授权

US5568330A Recording/reproducing apparatus with maximum likelihood sequence estimation 失效
标题翻译：具有最大似然序列估计的记录/再现装置
公开(公告)号：US5568330A
公开(公告)日：1996-10-22
申请号：US312803
申请日：1994-09-27
申请人： Hideki Sawaguchi , Yasuhide Ouchi , Naoki Sato , Yosuke Hori
发明人： Hideki Sawaguchi , Yasuhide Ouchi , Naoki Sato , Yosuke Hori
IPC分类号： G11B20/18 , G11B20/10 , H03M13/23 , H03M13/31 , H03M13/39 , H03M13/41 , H04L25/03 , H04L25/08 , G11B5/09
CPC分类号： H03M13/6343 , G11B20/10009 , H03M13/31 , H03M13/41 , H03M13/6502 , H04L25/03178
摘要： A magnetic recording apparatus comprises: a magnetic recording medium for recording a binary signal; a magnetic head for detecting the binary signal; an amplifier for amplifying the binary signal detected by the magnetic head; a channel for outputting the amplifier binary signal in the form of a timing value sequence, the timing value sequence alternately providing positive and negative peak values following the rule of the binary signal a recorded in the recording medium; a temporary judging unit for judging a presently input timing value of the timing value sequence supplied from the channel as one of the positive peak value, the negative peak value, and an intermediate value, in accordance with the relationship with a preceding timing value temporarily judged as one of the positive and negative peak values; a final judging unit for finally setting the preceding timing value as one of the positive and negative peak values and the intermediate value, in accordance with the relationship with the presently input and temporarily judged timing value; a counter for counting the number of input bits of the timing value sequence; a unit for resetting the counter when the timing value temporarily judged as one of the positive and negative peak values is output; a register for storing a decoded binary bit value; and a unit for overwriting the bit value in the register at the bit position corresponding to the count of the counter.
摘要翻译：磁记录装置包括：用于记录二进制信号的磁记录介质; 用于检测二进制信号的磁头; 用于放大由磁头检测的二进制信号的放大器; 用于以定时值序列的形式输出放大器二进制信号的通道，所述定时值序列交替地提供正和负峰值，遵循记录在记录介质中的二进制信号a的规则; 临时判断单元，用于根据与临时判断的前一定时值的关系，判断从通道提供的定时值序列的当前输入定时值作为正峰值，负峰值和中间值之一作为正值和负峰值之一; 根据与当前输入和临时判断的定时值的关系，最终将前一定时值最后设置为正和负峰值和中间值之一的最终判断单元; 用于对定时值序列的输入位数进行计数的计数器; 当临时判断为正值和负峰值之一的定时值被输出时用于复位计数器的单元; 用于存储解码的二进制位值的寄存器; 以及用于在与计数器的计数相对应的位位置处重写寄存器中的位值的单元。

2. 发明授权

US5400189A Magnetic recording and reproducing apparatus, reproduction signal processing apparatus, and reproduction signal processing method 失效
标题翻译：磁记录和再现装置，再现信号处理装置和再现信号处理方法
公开(公告)号：US5400189A
公开(公告)日：1995-03-21
申请号：US33759
申请日：1993-03-18
申请人： Naoki Sato , Yasuhide Ouchi , Hirotsugu Kojima , Hideki Sawaguchi , Yosuke Hori
发明人： Naoki Sato , Yasuhide Ouchi , Hirotsugu Kojima , Hideki Sawaguchi , Yosuke Hori
IPC分类号： G11B5/035 , G11B20/10 , H03G5/00 , H03G5/16 , H03K5/159 , G11B5/09 , H03H7/30
CPC分类号： G11B20/10055 , G11B20/10009 , G11B5/035 , H03G5/165 , H03K5/159 , H03G5/005
摘要： A reproduction signal processing apparatus includes a memory circuit storing a predetermined pattern for deciding equalizing characteristics of an automatic equalizer in response to variation of a reproduction signal, a pattern converting circuit for converting the predetermined pattern outputted from the memory circuit into an equalization target pattern serving as a target of the equalization and correction by the automatic equalizer, an equalization error calculating circuit for producing an equalization error from the equalization target pattern and the equalization signal outputted from the automatic equalizer, and the automatic equalizer executing a partial response waveform process of the reproduction signal on the basis of the equalization error, for correcting the predetermined equalizing characteristics of the automatic equalizer by tracing the fluctuation of the reproduction signal. Thus, the equalization and correction tracing the variation of the equalizing characteristics of the automatic equalizer are executed, and also, the equalization and correction including the partial response waveform process are executed in the automatic equalizer.
摘要翻译：再现信号处理装置包括：存储电路，存储用于响应于再现信号的变化而确定自动均衡器的均衡特性的预定模式;模式转换电路，用于将从存储器电路输出的预定模式转换成服务的均衡目标图形作为自动均衡器的均衡和校正的目标，均衡误差计算电路用于从均衡目标模式产生均衡误差和从自动均衡器输出的均衡信号，并且自动均衡器执行部分响应波形处理基于均衡误差的再现信号，用于通过跟踪再现信号的波动来校正自动均衡器的预定均衡特性。因此，执行跟踪自动均衡器的均衡特性的变化的均衡和校正，并且在自动均衡器中执行包括部分响应波形处理的均衡和校正。

3. 发明授权

US5418660A Information processing apparatus for processing reproduction signal having nonlinear characteristics 失效
标题翻译：用于处理具有非线性特性的再现信号的信息处理装置
公开(公告)号：US5418660A
公开(公告)日：1995-05-23
申请号：US986010
申请日：1992-12-04
申请人： Naoki Sato , Yasuhide Ouchi , Hideki Sawaguchi , Yosuke Hori , Yutaka Okada
发明人： Naoki Sato , Yasuhide Ouchi , Hideki Sawaguchi , Yosuke Hori , Yutaka Okada
IPC分类号： G11B5/00 , G11B5/02 , G11B5/035 , G11B20/10 , G11B5/127
CPC分类号： G11B5/02 , G11B20/10009 , G11B5/035 , G11B2005/0016
摘要： A nonlinear compensation A/D converting method and a circuit for compensating asymmetry of a reproduction signal waveform, so as not to deteriorate the performance of a discriminator even if there is a nonlinearity such that the amplitudes of the signal differ in dependence on the polarities of the waveforms like a reproduction waveform of an MR head are provided. Scales 1+ and 1- of an A/D converter are set to values which differ in dependence on the positive and negative polarities of the input signal, so that a nonlinear compensation which is suitable for a high accurate and high speed operation can be realized. Even an MR head in which the asymmetry between the upper and lower waveforms of the reproduction waveform is large can be used. A yield of the head can be improved.
摘要翻译：一种非线性补偿A / D转换方法和用于补偿再生信号波形的不对称性的电路，以便即使存在非线性，使得信号的幅度根据不同的极性而不同于鉴别器的性能提供像MR头的再生波形那样的波形。 A / D转换器的1和1的倍数被设定为与输入信号的正极性和负极性不同的值，从而可以实现适合于高精度和高速度操作的非线性补偿。甚至可以使用其中再现波形的上下波形之间的不对称性大的MR磁头。可以提高头部的产量。

4. 发明授权

US5392316A Decoding method and apparatus with maximum likelihood sequence estimation 失效
标题翻译：具有最大似然序列估计的解码方法和装置
公开(公告)号：US5392316A
公开(公告)日：1995-02-21
申请号：US010390
申请日：1993-01-28
申请人： Hideki Sawaguchi , Yasuhide Ouchi , Naoki Sato , Yosuke Hori
发明人： Hideki Sawaguchi , Yasuhide Ouchi , Naoki Sato , Yosuke Hori
IPC分类号： G11B20/18 , G11B20/10 , H03M13/23 , H03M13/31 , H03M13/39 , H03M13/41 , H04L25/03 , H04L25/08 , H04L25/49 , G11B5/02
CPC分类号： H03M13/6343 , G11B20/10009 , H03M13/31 , H03M13/41 , H03M13/6502 , H04L25/03178
摘要： A magnetic recording apparatus includes a magnetic recording medium for recording a binary signal; a magnetic head for detecting the binary signal; an amplifier for amplifying the binary signal detected by the magnetic head; a channel for outputting the amplified binary signal in the form of a timing value sequence, the timing value sequence alternatively providing positive and negative peak values following the rule of the binary signal that recorded in the recording medium; a temporary judging unit for judging a presently input timing value of the timing value sequence supplied from the channel as one of the positive peak value, in accordance with the relationship with a preceding timing value temporarily judged as one of the positive and negative peak values; a final judging unit for finally setting the preceding timing value as one of the positive and negative peak values and the intermediate value, in accordance with the relationship with the presently input and temporarily judged timing value; a counter for counting the number of input bits of the timing value sequence; a unit for resetting the counter when the timing value temporarily judged as one of the positive and negative peak values is output; a register for storing a decoded binary bit value; and a unit for overwriting the bit value in the register at the bit position corresponding to the count of the counter.
摘要翻译：磁记录装置包括用于记录二进制信号的磁记录介质; 用于检测二进制信号的磁头; 用于放大由磁头检测的二进制信号的放大器; 用于以定时值序列的形式输出放大的二进制信号的通道，所述定时值序列交替地提供正和负峰值，遵循记录在记录介质中的二进制信号的规则; 根据与临时判断为正值和负峰值之一的先前定时值的关系，判断从通道提供的定时值序列的当前输入定时值作为正峰值之一的临时判断单元; 根据与当前输入和临时判断的定时值的关系，最终将前一定时值最后设置为正和负峰值和中间值之一的最终判断单元; 用于对定时值序列的输入位数进行计数的计数器; 当临时判断为正值和负峰值之一的定时值被输出时用于复位计数器的单元; 用于存储解码的二进制位值的寄存器; 以及用于在与计数器的计数相对应的位位置处重写寄存器中的位值的单元。

5. 发明授权

US5467232A Magnetic recording and reproducing method using phase discrimination and apparatus therefor 失效
标题翻译：使用相位鉴别的磁记录和再现方法及其装置
公开(公告)号：US5467232A
公开(公告)日：1995-11-14
申请号：US36280
申请日：1993-03-24
申请人： Yasuhide Ouchi , Naoki Sato , Hideki Sawaguchi , Yosuke Hori
发明人： Yasuhide Ouchi , Naoki Sato , Hideki Sawaguchi , Yosuke Hori
IPC分类号： G11B5/09 , G11B20/10 , H04L7/02 , H04L25/03 , G11B5/035 , G11B27/10 , H03H7/30
CPC分类号： H04L25/03038 , G11B20/10009 , G11B5/09
摘要： In a phase discrimination signal processing system in the signal reproduction of a magnetic recording and reproducing apparatus, instead of differentiation of a reproduced signal, amplitude discrimination automatic equalization is effected for an isolated waveform at a phase discrimination point corresponding to an isolated magnetization reversal reproduced by a magnetic head such that an amplitude at each discrimination time other than a peak point is zero to effect phase discrimination of the signal waveform.
摘要翻译：在磁记录和再现装置的信号再现中的相位鉴别信号处理系统中，代替再生信号的区分，对相应于与由磁头，使得除了峰值点之外的每个鉴别时间的振幅为零，以实现信号波形的相位识别。

6. 发明授权

US5008761A Readout circuit in magnetic recording device 失效
标题翻译：磁记录装置中的读出电路
公开(公告)号：US5008761A
公开(公告)日：1991-04-16
申请号：US489322
申请日：1990-03-05
申请人： Nobumasa Nishiyama , Makoto Saito , Yasuhide Ouchi , Yasuhiro Katoh , Yoshihisa Kamo , Makoto Koizumi , Hajime Aoi , Naoki Sato , Reijiro Tsuchiya
发明人： Nobumasa Nishiyama , Makoto Saito , Yasuhide Ouchi , Yasuhiro Katoh , Yoshihisa Kamo , Makoto Koizumi , Hajime Aoi , Naoki Sato , Reijiro Tsuchiya
IPC分类号： G11B5/035 , G11B20/10 , G11B20/18
CPC分类号： G11B20/10212 , G11B20/182 , G11B5/035
摘要： A readout circuit in magnetic recording device is disclosed, in which a test data signal for detecting an error in the characteristics of an automatic equalizer is recorded in a predetermined position of each track of a magnetic recording medium. In readout mode, a test data signal for a selected track is read out first, and this signal is compared with a reference signal dependent on the system conditions to determine an error from the reference signal. The optimum equalization coefficient is determined to eliminate this error from the reference signal and set in the equalizer. The data is readout under the optimum equalization characteristics thus set.

7. 发明授权

US4907100A Readout circuit in magnetic recording device 失效
标题翻译：磁记录装置中的读出电路
公开(公告)号：US4907100A
公开(公告)日：1990-03-06
申请号：US248123
申请日：1988-09-23
申请人： Nobumasa Nishiyama , Makoto Saito , Yasuhide Ouchi , Yasuhiro Katoh , Yoshihasa Kamo , Makoto Koizumi , Hajime Aoi , Naoki Sato , Reijiro Tsuchiya
发明人： Nobumasa Nishiyama , Makoto Saito , Yasuhide Ouchi , Yasuhiro Katoh , Yoshihasa Kamo , Makoto Koizumi , Hajime Aoi , Naoki Sato , Reijiro Tsuchiya
IPC分类号： G11B5/035 , G11B20/10 , G11B20/18
CPC分类号： G11B20/10212 , G11B20/182 , G11B5/035
摘要： A readout circuit in magnetic recording device is disclosed, in which a test data signal for detecting an error in the characteristics of an automatic equalizer is recorded in a predetermined position of each track of a magnetic recording medium. In readout mode, a test data signal for a selected track is read out first, and this signal is compared with a reference signal dependent on the system conditions to determine an error from the reference signal. The optimum equalization coefficient is determined to eliminate this error from the reference signal and is set in the equalizer. The data is readout under the optimum equalization characteristics thus set.
摘要翻译：公开了一种磁记录装置中的读出电路，其中用于检测自动均衡器的特性误差的测试数据信号被记录在磁记录介质的每个磁迹的预定位置。在读出模式下，首先读取所选轨道的测试数据信号，并根据系统条件将该信号与参考信号进行比较，以确定参考信号的误差。确定最佳均衡系数以从参考信号中消除该误差，并将其设置在均衡器中。在如此设置的最佳均衡特性下读出数据。

8. 发明申请

US20110169501A1 DELAY CIRCUIT 审中-公开
标题翻译：延时电路
公开(公告)号：US20110169501A1
公开(公告)日：2011-07-14
申请号：US13120423
申请日：2008-09-24
申请人： Naoki Sato
发明人： Naoki Sato
IPC分类号： H01H31/02 , H03L7/06
CPC分类号： G01R31/31922 , H03L7/0805 , H03L7/0812 , H03L7/0816 , H03L7/10
摘要： A sub-delay element has the same configuration as that of a main delay element, and applies a delay τ that corresponds to a bias voltage to a selected clock signal output from a first selector. A phase detectorgenerates a phase detection signal that corresponds to the phase difference between a selected clock signal that has propagated through the sub-delay element and a selected clock signal that has propagated through a bypass path. A counter performs a count operation according to the phase detection signal. A D/A converter supplies a bias voltage that corresponds to the count value of the counter to the main delay element and the sub-delay element. An initialization unit instructs a DLL circuit to actually operate, and sets the reference voltage to be supplied to the D/A converter based upon the fluctuation in the count value of the counter.
摘要翻译：子延迟元件具有与主延迟元件相同的配置，并将对应于偏置电压的延迟τ施加到从第一选择器输出的所选择的时钟信号。相位检测器产生相位检测信号，该相位检测信号对应于已经通过辅助延迟元件传播的所选择的时钟信号与已经通过旁路路径传播的选定时钟信号之间的相位差。计数器根据相位检测信号执行计数操作。 D / A转换器将对应于计数器的计数值的偏置电压提供给主延迟元件和次延迟元件。初始化单元指示DLL电路实际操作，并且基于计数器的计数值的波动来设置要提供给D / A转换器的参考电压。

9. 发明授权

US07949885B2 Power supply device, image forming apparatus, and power supply method 有权
标题翻译：电源装置，成像装置和供电方法
公开(公告)号：US07949885B2
公开(公告)日：2011-05-24
申请号：US11959991
申请日：2007-12-19
申请人： Hideo Kikuchi , Naoki Sato
发明人： Hideo Kikuchi , Naoki Sato
IPC分类号： G06F1/26
CPC分类号： G06F1/30 , G06F1/305
摘要： A power supply device supplies power to an image forming apparatus. The image forming apparatus includes a load and a control unit. The load requires power, and is controlled by the control unit. The power supply includes a capacitor and a power-supply unit. The capacitor is charged by an external power source, and dischargably stores therein power. The power-supply unit provides power supply from the capacitor to the load and the control unit before voltage of the external power source drops below a threshold level where malfunction of the image forming apparatus occurs. After the voltage recovers to the threshold level, the power-supply unit stops the power supply from the capacitor.
摘要翻译：电源装置向图像形成装置供电。图像形成装置包括负载和控制单元。负载需要电源，由控制单元控制。电源包括电容器和电源单元。电容器由外部电源充电，并且可放电地存储电力。电源单元在外部电源的电压下降到低于图像形成装置发生故障的阈值水平之前，从电容器向负载和控制单元提供电力供应。电压恢复到阈值电平后，电源单元停止电容器的电源。

10. 发明申请

US20090055541A1 CONNECTION PARAMETER SETTING SYSTEM, METHOD THEREOF, ACCESS POINT, SERVER, WIRELESS TERMINAL, AND PARAMETER SETTING APPARATUS 审中-公开
标题翻译：连接参数设置系统及其方法，访问点，服务器，无线终端和参数设置设备
公开(公告)号：US20090055541A1
公开(公告)日：2009-02-26
申请号：US11909125
申请日：2006-03-20
申请人： Naoki Sato , Ryuhei Fujiwara , Kenichi Ariga
发明人： Naoki Sato , Ryuhei Fujiwara , Kenichi Ariga
IPC分类号： G06F15/16 , H04L9/00 , H04L9/32
CPC分类号： H04W28/18 , H04W88/08 , H04W88/14 , H04W92/10
摘要： An access point performing a communication with a wireless terminal performing a communication according to a predetermined wireless communication specification acquires a connection parameter required for a communication based on the predetermined wireless communication specification from a connection parameter server which can be connected thereto through a network. The access point sets an access point connection parameter in the access point itself. The wireless terminal acquires a wireless terminal connection parameter by using a communication method not requiring setting from the access point in advance and sets it in the wireless terminal itself. This completes the setting for performing a communication based on the predetermined wireless communication specification and it is possible to start a communication based on the predetermined wireless communication specification between the wireless and access point. Thus, it is possible to set a connection parameter for a wireless communication in the wireless terminal and access point without requiring a complicated setting work by a user.
摘要翻译：根据预定的无线通信规范执行通信的无线终端进行通信的接入点从可以通过网络与其连接的连接参数服务器基于预定的无线通信规范获取通信所需的连接参数。接入点本身设置接入点连接参数。无线终端通过使用不需要从接入点进行设定的通信方式来取得无线终端连接参数，并将其设置在无线终端本身。这完成了基于预定无线通信规范进行通信的设置，并且可以基于无线和接入点之间的预定无线通信规范来开始通信。因此，可以在无线终端和接入点中设置用于无线通信的连接参数，而不需要用户进行复杂的设置工作。

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