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1. 发明申请

US20100238577A1 METHOD AND APPARATUS FOR MEASURING PHASE SHIFT IN A DISK DRIVE HAVING BIT-PATTERNED MEDIA 失效
标题翻译：用于测量具有双向图形介质的磁盘驱动器中的相位移动的方法和装置
公开(公告)号：US20100238577A1
公开(公告)日：2010-09-23
申请号：US12726324
申请日：2010-03-17
申请人： Hiroshi Mutoh
发明人： Hiroshi Mutoh
IPC分类号： G11B5/09 , G11B27/36
CPC分类号： G11B5/09 , B82Y10/00 , G11B5/59616 , G11B5/743 , G11B20/10212 , G11B20/10222 , G11B20/1217 , G11B20/1407 , G11B27/034 , G11B27/36 , G11B2020/1232 , G11B2020/1275 , G11B2220/2516 , G11B2220/252
摘要： According to one embodiment, a disk drive comprising a magnetic disk of bit-patterned type is provided. The disk drive has a reproduction module, a measurement module, and a recording module. The reproduction module outputs a reproduced signal corresponding to the phase-shift measuring bits provided on the magnetic disk. The measurement module determines that the phase shift corresponding to the phase-shift measuring bits is the phase shift of a write clock signal if the reproduced signal is determined to be indefinite on the basis of the quantization value of the reproduced signal. The recording module records data corresponding to the data recording bits, by using the write clock signal adjusted by the phase shift.
摘要翻译：根据一个实施例，提供一种包括位图型磁盘的磁盘驱动器。磁盘驱动器具有再现模块，测量模块和记录模块。再现模块输出与设置在磁盘上的相移测量位相对应的再现信号。如果再现信号基于再现信号的量化值被确定为不确定，则测量模块确定对应于相移测量位的相移是写时钟信号的相移。记录模块通过使用由相移调整的写入时钟信号来记录与数据记录位相对应的数据。

2. 发明授权

US5432820A Maximum-likelihood decoding method and device 失效
标题翻译：最大似然解码方法和装置
公开(公告)号：US5432820A
公开(公告)日：1995-07-11
申请号：US910311
申请日：1993-07-26
申请人： Takao Sugawara , Yoshifumi Mizoshita , Takashi Aikawa , Hiroshi Mutoh , Kiichirou Kasai
发明人： Takao Sugawara , Yoshifumi Mizoshita , Takashi Aikawa , Hiroshi Mutoh , Kiichirou Kasai
IPC分类号： H03M13/39 , H03D1/00 , H04L27/06
CPC分类号： H03M13/39
摘要： A maximum-likelihood decoding method for decoding an input signal subject to intersymbol interference. An assumption is made of a measure of an interference caused by a future signal that is later in a sequence than an assumed data sequence, on the basis of a predetermined bits of sample values of said input signal that are earlier in a sequence than an assumed data sequence stored in an assumed path memory (104). An assumed sample value of said input signal by referring to this measure of interference. Maximum-likelihood decoding is conducted on said input signal, on the basis of this assumed sample value and a sample value of said input signal; a plurality of survivor paths are generated and stored in a path memory (102); data for the most likely one of survivor paths is output as a decoded data sequence.
摘要翻译： PCT No.PCT / JP91 / 01579 Sec。 371日期：1993年7月26日 102（e）日期1993年7月26日PCT 1991年11月19日PCT PCT。出版物WO92 / 09144 日期：1992年5月29日。用于解码符号间干扰的输入信号的最大似然解码方法。基于序列中比预期的序列更早的所述输入信号的采样值的预定比特，假定由比未被假定的数据序列晚于序列的未来信号引起的干扰的度量存储在假定路径存储器（104）中的数据序列。通过参考这种干扰措施，假定所述输入信号的采样值。基于该假设采样值和所述输入信号的采样值对所述输入信号进行最大似然解码; 多个幸存路径被生成并存储在路径存储器（102）中; 作为解码数据序列输出最可能的幸存路径之一的数据。

3. 发明授权

US08300343B2 Magnetic bit-patterned disk and disk drive 失效
标题翻译：磁性位图形磁盘和磁盘驱动器
公开(公告)号：US08300343B2
公开(公告)日：2012-10-30
申请号：US12726270
申请日：2010-03-17
申请人： Hiroshi Mutoh
发明人： Hiroshi Mutoh
IPC分类号： G11B5/09
CPC分类号： G11B5/855 , B82Y10/00 , G11B5/012 , G11B5/746 , G11B20/10009 , G11B20/10222 , G11B2020/1275 , G11B2020/1287 , G11B2220/2516 , G11B2220/252
摘要： According to one embodiment, a disk drive having a magnetic disk of the bit pattern media type is provided. The disk drive has a reproduction module configured to reproduce a signal from a measurement area provided on the magnetic disk and holding groups of phase-shift measuring bits, a measurement module configured to measure a phase shift that a write clock signal has with respect to data recording bits held in a data record area provided on the magnetic disk, when the signal reproduced by the reproduction module is indefinite, and a recording module configured to record data that corresponds to the data recording bits, by using the write clock signal adjusted by the phase shift.
摘要翻译：根据一个实施例，提供一种具有位图介质类型的磁盘的磁盘驱动器。磁盘驱动器具有再现模块，其被配置为从设置在磁盘上的测量区域再现信号并保持相移测量位组，测量模块被配置为测量写入时钟信号相对于数据的相移当由再现模块再现的信号不确定时，保存在磁盘上提供的数据记录区中的记录位，以及记录模块，用于记录与数据记录位对应的数据，通过使用由相移。

4. 发明申请

US20110090583A1 MAGNETIC RECORDING APPARATUS AND MAGNETIC RECORDING MEDIUM 失效
标题翻译：磁记录装置和磁记录介质
公开(公告)号：US20110090583A1
公开(公告)日：2011-04-21
申请号：US12821036
申请日：2010-06-22
申请人： Hiroshi MUTOH
发明人： Hiroshi MUTOH
IPC分类号： G11B5/09
CPC分类号： G11B5/012 , G11B5/02
摘要： According to one embodiment, a magnetic recording apparatus includes: an information recording module configured to record a predetermined number of lines of information with a predetermined length in an information recording region of a magnetic recording medium, each of the lines of information having a same recording start position with respect to a relative movement direction of the magnetic recording medium and a recording element, the each of the lines of information being provided with an overlaying portion of adjacent lines of information. The information recording module is configured to record clock information in one or a plurality of the lines of information.
摘要翻译：根据一个实施例，磁记录装置包括：信息记录模块，被配置为在磁记录介质的信息记录区域中记录预定长度的预定数量的信息行，每行信息具有相同的记录关于磁记录介质和记录元件的相对移动方向的开始位置，信息线中的每一条被提供有相邻行信息的重叠部分。信息记录模块被配置为在一行或多行信息中记录时钟信息。

5. 发明授权

US5923708A Decoding circuit for a read signal from a magnetic recording and reading system using partial response 失效
标题翻译：从使用部分响应的磁记录和读取系统读取信号的解码电路
公开(公告)号：US5923708A
公开(公告)日：1999-07-13
申请号：US595599
申请日：1996-02-02
申请人： Hiroshi Mutoh
发明人： Hiroshi Mutoh
IPC分类号： G11B20/14 , G11B20/10 , G11B20/18 , H03H21/00 , H03M13/39 , H04B3/04 , H03H7/30
CPC分类号： G11B20/10046 , G11B20/10009 , G11B20/10027 , G11B20/10055 , G11B20/10175
摘要： A decoding circuit for a magnetic recording and reading system enables the implementation of an AGC loop with a relatively simple configuration and further enables easy clock extraction and high operating speed. The level setting system for setting the signal level to be taken as the value 1 in the decoding circuit is configured so as to comprise a variable-gain amplifier, a PR4 equalizer having characteristics capable of equalizing to a target PR4 equalization waveform, and a level detector which feeds the output signal back to the variable-gain amplifier as an AGC loop control signal to control the gain thereof. The detection system of the decoding circuit is configured so as to comprise a VFO which generates a system clock fs, and a decision feedback type decoding means in a decision section, which decodes data lines which appear at the output of the PR4 equalizer. In doing this, by configuring the decision feedback type decoding means so as to comprise a decoding means for even data lines and a decoding means for odd data lines, it is possible to reduce the system clock frequency to one half, thereby enabling an increase in the speed of decoding.
摘要翻译：用于磁记录和读取系统的解码电路使得能够实现具有相对简单配置的AGC环路，并且还使得能够容易地进行时钟提取和高操作速度。将在解码电路中设置为值1的信号电平的电平设定系统配置为包括可变增益放大器，具有能够与目标PR4均衡波形相等的特性的PR4均衡器和等级检测器，其将输出信号反馈到可变增益放大器作为AGC环路控制信号以控制其增益。解码电路的检测系统被配置为包括生成系统时钟fs的VFO和判定部分中的判决反馈类型解码装置，其对出现在PR4均衡器的输出端的数据线进行解码。在这样做时，通过配置判定反馈类型解码装置以包括偶数数据线的解码装置和奇数数据线的解码装置，可以将系统时钟频率降低到一半，从而能够增加解码速度。

6. 发明授权

US08238052B2 Method and apparatus for measuring phase shift in a disk drive having bit-patterned media 失效
标题翻译：用于测量具有位图案介质的磁盘驱动器中的相移的方法和装置
公开(公告)号：US08238052B2
公开(公告)日：2012-08-07
申请号：US12726324
申请日：2010-03-17
申请人： Hiroshi Mutoh
发明人： Hiroshi Mutoh
IPC分类号： G11B5/09 , G11B27/36
CPC分类号： G11B5/09 , B82Y10/00 , G11B5/59616 , G11B5/743 , G11B20/10212 , G11B20/10222 , G11B20/1217 , G11B20/1407 , G11B27/034 , G11B27/36 , G11B2020/1232 , G11B2020/1275 , G11B2220/2516 , G11B2220/252
摘要： According to one embodiment, a disk drive comprising a magnetic disk of bit-patterned type is provided. The disk drive has a reproduction module, a measurement module, and a recording module. The reproduction module outputs a reproduced signal corresponding to the phase-shift measuring bits provided on the magnetic disk. The measurement module determines that the phase shift corresponding to the phase-shift measuring bits is the phase shift of a write clock signal if the reproduced signal is determined to be indefinite on the basis of the quantization value of the reproduced signal. The recording module records data corresponding to the data recording bits, by using the write clock signal adjusted by the phase shift.
摘要翻译：根据一个实施例，提供一种包括位图型磁盘的磁盘驱动器。磁盘驱动器具有再现模块，测量模块和记录模块。再现模块输出与设置在磁盘上的相移测量位相对应的再现信号。如果再现信号基于再现信号的量化值被确定为不确定，则测量模块确定对应于相移测量位的相移是写时钟信号的相移。记录模块通过使用由相移调整的写入时钟信号来记录与数据记录位相对应的数据。

7. 发明授权

US5287385A Viterbi decoding system including variable-order equalizer 失效
标题翻译：维特比解码系统，包括可变阶均衡器
公开(公告)号：US5287385A
公开(公告)日：1994-02-15
申请号：US810069
申请日：1991-12-19
申请人： Takao Sugawara , Yoshifumi Mizoshita , Hiroshi Mutoh , Kiichirou Kasai , Takenori Ohshima
发明人： Takao Sugawara , Yoshifumi Mizoshita , Hiroshi Mutoh , Kiichirou Kasai , Takenori Ohshima
IPC分类号： G11B5/09 , G11B20/10 , G11B20/18 , H03M13/23 , H03M13/41 , H03H7/30
CPC分类号： G11B20/10009 , H03M13/41
摘要： A Viterbi decoding system includes a characteristic estimator for estimating a characteristic of a system, and an equalizer for receiving an input signal from the system and for equalizing a waveform of the input signal so that an equalized waveform of the input signal is varied based on the characteristic of the system estimated by the characteristic estimator. A Viterbi decoder generates an output signal showing a maximum-likelihood path by using the equalized waveform of the input signal from the equalizer.
摘要翻译：维特比解码系统包括用于估计系统的特性的特性估计器和用于从系统接收输入信号并用于均衡输入信号的波形的均衡器，使得输入信号的均衡波形基于由特征估计器估计的系统特征。维特比解码器通过使用来自均衡器的输入信号的均衡波形来产生表示最大似然路径的输出信号。

8. 发明授权

US08059351B2 Magnetic recording apparatus and magnetic recording medium 失效
标题翻译：磁记录装置和磁记录介质
公开(公告)号：US08059351B2
公开(公告)日：2011-11-15
申请号：US12821036
申请日：2010-06-22
申请人： Hiroshi Mutoh
发明人： Hiroshi Mutoh
IPC分类号： G11B5/09
CPC分类号： G11B5/012 , G11B5/02
摘要： According to one embodiment, a magnetic recording apparatus includes: an information recording module configured to record a predetermined number of lines of information with a predetermined length in an information recording region of a magnetic recording medium, each of the lines of information having a same recording start position with respect to a relative movement direction of the magnetic recording medium and a recording element, the each of the lines of information being provided with an overlaying portion of adjacent lines of information. The information recording module is configured to record clock information in one or a plurality of the lines of information.
摘要翻译：根据一个实施例，磁记录装置包括：信息记录模块，被配置为在磁记录介质的信息记录区域中记录预定长度的预定数量的信息行，每行信息具有相同的记录关于磁记录介质和记录元件的相对移动方向的开始位置，信息线中的每一条被提供有相邻行信息的重叠部分。信息记录模块被配置为在一行或多行信息中记录时钟信息。

9. 发明授权

US06570726B2 Drop detection systems for portable information processing apparatus 失效
标题翻译：便携式信息处理装置的丢弃检测系统
公开(公告)号：US06570726B2
公开(公告)日：2003-05-27
申请号：US09941047
申请日：2001-08-28
申请人： Hiroshi Mutoh
发明人： Hiroshi Mutoh
IPC分类号： G11B1504
CPC分类号： G06F1/1684 , G06F1/1616 , G06F1/1626 , G11B19/04 , G11B19/20 , G11B21/12 , G11B27/36 , G11B33/025 , G11B33/08
摘要： A portable information processing apparatus 10 which is a lap top type has a housing 11 with a hard disk drive 14. At the bottom side 11b of the housing 11, a first touch sensor 20 is provided adjacent a corner 22 and a second touch sensor 21 is provided adjacent a corner 24 which is at a diagonal side. Once the portable information processing apparatus 10 leaves a table, output signals of the respective touch sensors 20 and 21 vary precisely. By comparing the output signals of the respective touch sensors 20 and 21 with a true value table memorized in a memory, it is decided whether the portable information processing apparatus 10 has started dropping. If the portable information processing apparatus 10 starts dropping, the hard disk drive 14 enters the withdrawal mode.
摘要翻译：作为笔记本型的便携式信息处理装置10具有带有硬盘驱动器14的壳体11.在壳体11的底面11b处，第一触摸传感器20设置在角部22附近，第二触摸传感器21 被设置在与对角线侧的角部24相邻。一旦便携式信息处理设备10离开表，各个触摸传感器20和21的输出信号精确地变化。通过将各个触摸传感器20和21的输出信号与存储在存储器中的真实值表进行比较，判定便携式信息处理装置10是否开始下降。如果便携式信息处理装置10开始下降，则硬盘驱动器14进入撤销模式。

10. 发明授权

US4430805A Rail type universal parallel ruler device 失效
标题翻译：轨道式通用并联尺尺寸装置
公开(公告)号：US4430805A
公开(公告)日：1984-02-14
申请号：US410921
申请日：1982-08-24
申请人： Hiroshi Mutoh , Masami Hikawa , Yoshinori Watanabe , Kouichi Yamazaki
发明人： Hiroshi Mutoh , Masami Hikawa , Yoshinori Watanabe , Kouichi Yamazaki
IPC分类号： B43L13/04 , F16C39/06 , B43L13/02
CPC分类号： F16C39/063 , B43L13/045 , F16C32/0434 , Y10S33/01
摘要： A rail type universal parallel ruler device comprising a drawing board, a horizontal rail mounted on the drawing board, a horizontal cursor mounted shiftably on the horizontal rail, a vertical rail connected to the horizontal cursor, a vertical cursor mounted shiftably on the vertical rail, and a head connected to the vertical cursor, the improved rail type universal ruler device wherein a magnetic member is disposed on each of the cursors and rails for guiding the cursors and/or on a tail portion of the vertical rail and the side of drawing board for guiding the tail portion of the vertical rail, and magnetic force is caused to work between the magnetic members in a direction where the cursor is floated relative to the surface of rail and/or a direction where the tail portion of the vertical rail is floated relative to the surface of the drawing board side.
摘要翻译：一种轨道式通用平行尺装置，包括：绘图板，安装在绘图板上的水平轨道，可移动地安装在水平轨道上的水平光标，连接到水平光标的垂直轨道，可垂直安装在垂直导轨上的垂直光标，和连接到垂直光标的头部，改进的轨道型通用尺尺装置，其中磁性构件设置在每个光标和轨道上，用于引导光标和/或在垂直导轨的尾部和绘图板的一侧用于引导垂直轨道的尾部，并且使磁力在光学构件相对于轨道表面漂浮的方向和/或垂直轨道的尾部浮动的方向上在磁性构件之间工作相对于绘图板侧的表面。

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