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    • 1. 发明授权
    • Rail type universal parallel ruler device
    • 轨道式通用并联尺尺寸装置
    • US4430805A
    • 1984-02-14
    • US410921
    • 1982-08-24
    • Hiroshi MutohMasami HikawaYoshinori WatanabeKouichi Yamazaki
    • Hiroshi MutohMasami HikawaYoshinori WatanabeKouichi Yamazaki
    • B43L13/04F16C39/06B43L13/02
    • F16C39/063B43L13/045F16C32/0434Y10S33/01
    • 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.
    • 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。
    • 4. 发明授权
    • Maximum-likelihood decoding method and device
    • 最大似然解码方法和装置
    • US5432820A
    • 1995-07-11
    • US910311
    • 1993-07-26
    • Takao SugawaraYoshifumi MizoshitaTakashi AikawaHiroshi MutohKiichirou Kasai
    • Takao SugawaraYoshifumi MizoshitaTakashi AikawaHiroshi MutohKiichirou Kasai
    • H03M13/39H03D1/00H04L27/06
    • H03M13/39
    • 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.
    • 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。
    • 6. 发明授权
    • Decoding circuit for a read signal from a magnetic recording and reading
system using partial response
    • 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
    • US5923708A
    • 1999-07-13
    • US595599
    • 1996-02-02
    • Hiroshi Mutoh
    • Hiroshi Mutoh
    • G11B20/14G11B20/10G11B20/18H03H21/00H03M13/39H04B3/04H03H7/30
    • G11B20/10046G11B20/10009G11B20/10027G11B20/10055G11B20/10175
    • 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.
    • 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。
    • 9. 发明授权
    • Magnetic recording apparatus and magnetic recording medium
    • 磁记录装置和磁记录介质
    • US08059351B2
    • 2011-11-15
    • US12821036
    • 2010-06-22
    • Hiroshi Mutoh
    • Hiroshi Mutoh
    • G11B5/09
    • G11B5/012G11B5/02
    • 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.
    • 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。
    • 10. 发明授权
    • Drop detection systems for portable information processing apparatus
    • 便携式信息处理装置的丢弃检测系统
    • US06570726B2
    • 2003-05-27
    • US09941047
    • 2001-08-28
    • Hiroshi Mutoh
    • Hiroshi Mutoh
    • G11B1504
    • G06F1/1684G06F1/1616G06F1/1626G11B19/04G11B19/20G11B21/12G11B27/36G11B33/025G11B33/08
    • 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.
    • 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。