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1. 发明授权

US5905603A Magnetic recording medium magnetic head positioning method, and magnetic recording apparatus 失效
标题翻译：磁记录介质磁头定位方法及磁记录装置
公开(公告)号：US5905603A
公开(公告)日：1999-05-18
申请号：US510173
申请日：1995-08-02
申请人： Kenji Ogasawara , Hiroshi Yanagisawa , Koji Kurachi
发明人： Kenji Ogasawara , Hiroshi Yanagisawa , Koji Kurachi
IPC分类号： G11B21/10 , G11B5/55 , G11B5/596
CPC分类号： G11B5/59655 , G11B5/553 , G11B5/59688
摘要： A method and apparatus for accurately positioning the magnetic head of disk drives is disclosed. A recording medium is provided having two radial data structures formed thereon. Each radial data structure includes two parallel and adjacent data burst pattern trains. The first burst pattern is defined by a first side centrally aligned with a concentric data track and a second side opposed to the first side and centrally aligned with an adjacent concentric data track. The third burst pattern is defined by a third side spaced apart from the first side of the first burst pattern by a distance not greater than the read width of a magnetic head and a fourth side opposed to the third side and spaced apart from the second side by a distance not greater than the read width. The first radial data structure generates a first signal for positioning the magnetic head relative to the recording medium. The second radial data structure, parallel and offset from the first data structure, generates a second head position signal. Thus, the second head position signal is detected before the first head position signal becomes undetectable.
摘要翻译：公开了一种用于精确定位磁盘驱动器的磁头的方法和装置。提供具有形成在其上的两个径向数据结构的记录介质。每个径向数据结构包括两个并行和相邻的数据突发模式列。第一突发图案由与同心数据轨道集中对准的第一侧和与第一侧相对并且与相邻同心数据轨道居中对准的第二侧限定。第三突发图案由与第一突发图案的第一侧间隔开的距离不大于磁头的读取宽度的第三侧和与第三侧相对并与第二侧相隔开的第四侧限定距离不大于读宽度。第一径向数据结构产生用于相对于记录介质定位磁头的第一信号。与第一数据结构平行和偏移的第二径向数据结构产生第二头位置信号。因此，在第一头部位置信号变得不可检测之前检测到第二头部位置信号。

2. 发明授权

US5808822A Apparatus and method for correcting a read signal in a disk drive system based upon a front peak, a back peak and a peak of interest 失效
标题翻译：基于前峰，后峰和感兴趣的峰值来校正磁盘驱动器系统中的读取信号的装置和方法
公开(公告)号：US5808822A
公开(公告)日：1998-09-15
申请号：US549378
申请日：1995-10-27
申请人： Koji Kurachi , Satoshi Hashimoto , Hiroshi Yanagisawa
发明人： Koji Kurachi , Satoshi Hashimoto , Hiroshi Yanagisawa
IPC分类号： G11B5/012 , G11B5/09 , G11B20/10 , G11B5/035
CPC分类号： G11B20/10009 , G11B5/012 , G11B5/09
摘要： In a disk drive system, a circuit reduces the deterioration of the S/N ratio and corrects the position of a peak in a read signal to an accurate position. In one embodiment, a circuit senses the threshold levels corresponding to the magnitudes of three consecutive peaks of a read signal. A comparator obtains the direction of shift of the centrally positioned peak with respect to a reference position from the relationship of the magnitudes of the three consecutive peaks. The comparator outputs a pulse representing the direction of shift to a FIFO buffer. A delay circuit outputs a plurality of pulses. The pulses are shifted by an amount corresponding to a threshold level. A multiplexer selects a pulse to output from the delay circuit based on the direction of shift that was output from the FIFO buffer and based on the difference detected by an amplitude detection circuit. In an alternative embodiment, the correction circuit is implemented using a microprocessor.
摘要翻译：在磁盘驱动器系统中，电路减小了S / N比的劣化，并将读取信号中的峰值的位置校正到准确的位置。在一个实施例中，电路感测对应于读取信号的三个连续峰值的幅度的阈值电平。比较器根据三个连续峰值的大小的关系，获得相对于基准位置的中心位置的峰值的偏移方向。比较器输出表示向FIFO缓冲器的移位方向的脉冲。延迟电路输出多个脉冲。脉冲移位相应于阈值电平的量。多路复用器根据从FIFO缓冲器输出的移位方向，根据由振幅检测电路检测的差异，选择从延迟电路输出的脉冲。在替代实施例中，校正电路使用微处理器来实现。

3. 发明授权

US06466387B1 Data recording disk and disk drive device for reducing wasted space on a data recording disk 失效
标题翻译：数据记录磁盘和磁盘驱动器设备，用于减少数据记录磁盘上浪费的空间
公开(公告)号：US06466387B1
公开(公告)日：2002-10-15
申请号：US09124271
申请日：1998-07-29
申请人： Kenji Ogasawara , Hiroshi Yanagisawa , Keiji Kobayashi
发明人： Kenji Ogasawara , Hiroshi Yanagisawa , Keiji Kobayashi
IPC分类号： G11B509
CPC分类号： G11B5/012 , G11B5/035 , G11B5/4886
摘要： The present invention solves a problem that useless or wasted space exists on a data recording disk between read/write heads of narrower head width than others in the case that an uniform track pitch is used, and a head width of each head varies due to a fabrication tolerance. A data recording disk of the present invention comprises a first data recording surface and a second data recording surface, and a track pitch of adjacent data recording tracks of the first data recording surface differs from a track pitch of adjacent data recording tracks of the second data recording surface. All data recording tracks of the first data recording surface have substantially the same track width, and all gaps of the first data recording surface have substantially the same gap width, and, all data recording tracks of the second data recording surface have substantially the same track width, and all gaps of the second data recording surface have substantially the same gap width.
摘要翻译：本发明解决了在使用均匀的轨道间距的情况下，在头部宽度较窄的读/写头之间的数据记录盘上存在无用或浪费的空间的问题，并且每个头的头部宽度由于制造公差。本发明的数据记录盘包括第一数据记录表面和第二数据记录表面，并且第一数据记录表面的相邻数据记录磁道的磁道间距与第二数据的相邻数据记录磁迹的磁道间距不同记录表面。第一数据记录表面的所有数据记录轨道具有基本相同的轨道宽度，并且第一数据记录表面的所有间隙具有基本上相同的间隙宽度，并且第二数据记录表面的所有数据记录轨迹具有基本相同的轨迹宽度和第二数据记录表面的所有间隙具有基本上相同的间隙宽度。

4. 发明授权

US07457065B2 Systems and methods for hard disk drive optimization and manufacturing 失效
标题翻译：用于硬盘驱动器优化和制造的系统和方法
公开(公告)号：US07457065B2
公开(公告)日：2008-11-25
申请号：US10692342
申请日：2003-10-22
申请人： Kenji Ogasawara , Hiroshi Yanagisawa , Koichi Sato , Keishi Takahashi , Fuminori Sai
发明人： Kenji Ogasawara , Hiroshi Yanagisawa , Koichi Sato , Keishi Takahashi , Fuminori Sai
IPC分类号： G11B27/36 , G11B21/02
CPC分类号： G11B5/86
摘要： The data possessed by a parent hard disk drive is exported to a baby hard disk drive, which is connected to the parent hard disk drive, and thus, the baby hard disk drive executes by itself an optimization/inspection process including writing of servo information. A hard disk drive is reproduced by incorporating “DNA” used for reproduction into each hard disk drive, and then, by performing self-optimization and/or self-inspection by a new hard disk drive (baby hard disk drive), according to information supplied by a finished hard disk drive (parent hard disk drive).
摘要翻译：父硬盘驱动器所拥有的数据被导出到连接到父硬盘驱动器的婴儿硬盘驱动器，因此，婴儿硬盘驱动器本身执行包括写入伺服信息的优化/检查过程。通过将用于再现的“DNA”复制到每个硬盘驱动器中，然后通过由新的硬盘驱动器（婴儿硬盘驱动器）进行自我优化和/或自检来再现硬盘驱动器由完成的硬盘驱动器（父硬盘驱动器）提供。

5. 发明授权

US07019933B2 Servo information write method, servo control method, data storage device, and program 失效
标题翻译：伺服信息写入方式，伺服控制方式，数据存储装置和程序
公开(公告)号：US07019933B2
公开(公告)日：2006-03-28
申请号：US10676410
申请日：2003-09-30
申请人： Kaoru Iseri , Takashi Kuroda , Nobuya Matsubara , Kenji Ogasawara , Fuminori Sai , Hiroshi Yanagisawa
发明人： Kaoru Iseri , Takashi Kuroda , Nobuya Matsubara , Kenji Ogasawara , Fuminori Sai , Hiroshi Yanagisawa
IPC分类号： G11B21/02
CPC分类号： G11B5/59633 , G11B21/106
摘要： A servo system wherein a read head R detects a servo pattern that is written on a magnetic disk by a write head W. Position control of the write head W is exercised in accordance with the detected servo pattern, and the read head R detects a propagation pattern that is written on the magnetic disk by the write head W. Position of the write head W is corrected in accordance with the detected propagation pattern.
摘要翻译：一种伺服系统，其中读头R检测由写头W写在磁盘上的伺服模式。根据检测到的伺服模式执行写入头W的位置控制，并且读取头R检测传播由写入头W写在磁盘上的图案。写头W的位置根据检测到的传播模式被校正。

6. 发明授权

US07286316B2 Method and data storage device for writing patterns onto recording disk 失效
标题翻译：用于将图案写入记录盘的方法和数据存储装置
公开(公告)号：US07286316B2
公开(公告)日：2007-10-23
申请号：US11437552
申请日：2006-05-19
申请人： Fuminori Sai , Yutaka Ozawa , Kohji Takasaki , Hiroshi Yanagisawa , Satoshi Yamamoto
发明人： Fuminori Sai , Yutaka Ozawa , Kohji Takasaki , Hiroshi Yanagisawa , Satoshi Yamamoto
IPC分类号： G11B21/02 , G11B5/596 , G11B5/55
CPC分类号： G11B5/59633
摘要： Embodiments of the invention efficiently conduct servo corrections for preventing error propagation during SSW. In an example of the present invention, a servo position signal generator generates a servo position signal indicative of the current position of a read element on the basis of a servo signal from a servo channel. A target position generator generates correction data from multiply and add operations between the PES generated when the track that the read element is following is written, and pre-registered correction coefficients. A correction target position is generated from the correction data and a reference target position, and then output to a position error calculator. The position error calculator generates a position error signal (PES) from the servo position signal and the target position signal, and outputs PES to a servo controller. The servo controller generates a control signal (DACOUT) in accordance with PES, and a motor driver unit supplies an electric current of a required value to a VCM in accordance with the control signal.
摘要翻译：本发明的实施例有效地进行伺服校正，以防止SSW期间的错误传播。在本发明的一个例子中，伺服位置信号发生器基于来自伺服通道的伺服信号产生指示读取元件的当前位置的伺服位置信号。目标位置发生器在读取元件所追踪的轨迹被写入时产生的PES和预先登记的校正系数之间乘法生成校正数据并且在其之间添加操作。从校正数据和参考目标位置产生校正目标位置，然后输出到位置误差计算器。位置误差计算器从伺服位置信号和目标位置信号产生位置误差信号（PES），并将PES输出到伺服控制器。伺服控制器根据PES生成控制信号（DACOUT），并且电动机驱动单元根据控制信号向VCM提供所需值的电流。

7. 发明授权

US4982292A Method and apparatus for processing pel signals of an image 失效
标题翻译：用于处理图像的像素信号的方法和装置
公开(公告)号：US4982292A
公开(公告)日：1991-01-01
申请号：US252193
申请日：1988-09-30
申请人： Masaharu Itoh , Kazuharu Toyokawa , Hiroshi Yanagisawa
发明人： Masaharu Itoh , Kazuharu Toyokawa , Hiroshi Yanagisawa
IPC分类号： H04N1/387 , H04N1/411 , H04N1/413
CPC分类号： H04N1/413 , H04N1/411
摘要： A system for processing image data of a text document in compressed form wherein pel signals of the original image are stored in pel positions in an input image buffer and the pel signals stored in every other pel (EOP) positions in the input buffer are sequentially fetched, along with respective pluralities of neighboring pel signals stored in EOP positions and compressed by adaptive arithmetic compression to generate a first set of compressed data which is stored in a memory. The pel signals stored in remaining pel (RP) positions in the input image buffer are also sequentially fetched, along with respective pluralities of neighboring pel signals, including at least one signal stored in an RP position and a plurality of signals stored in EOP positions, and compressed by adaptive arithmetic compression to generate a second set of compressed data which is stored in a memory. The first and second sets of compressed data may be decompressed to reproduce the pel signals stored at EOP positions, and the pel signals stored in RP positions along with their respective pluralities of neighboring pel signals stored in EOP positions, and stored in an output image buffer. The fetching operation includes selecting one of a plurality of sampling windows, each having a different sampling pattern, for sampling the pel signals making up the first and second sets of data during compression and decompression to achieve the improved data volumes.

8. 发明授权

US4703364A Processor synchronous image scanner controlling method 失效
标题翻译：处理器同步图像扫描仪控制方法
公开(公告)号：US4703364A
公开(公告)日：1987-10-27
申请号：US880471
申请日：1986-06-30
申请人： Shigeki Asada , Hiroshi Yanagisawa
发明人： Shigeki Asada , Hiroshi Yanagisawa
IPC分类号： G06F3/00 , H04N1/028 , H04N1/04 , H04N1/17 , H04N1/19 , H04N3/14 , H04N5/335 , H04N5/341 , H04N5/372
CPC分类号： G06F3/002 , H04N1/17
摘要： The invention directly controls the start of application of clock pulses to a shift register of an image sensor unit in synchronism with read signals supplied from a processor unit, to transfer video data of successive scan lines of an image. Transfer time of video data of one scan line from the shift register to the processor unit is compared to a predetermined time period. If the transfer time exceeds the predetermined time period, transfer of video data of the next scan line to the shfit register is allowed after the video data of the one scan line in the shift register has been transferred to the processor unit, whereby electric charges for the next scan line accumulated in the photodiodes are vanished. And, the video data of the next scan line in the shift register is discarded. In addition, the invention is devised to provide a data disposing cycle in the operation mode of the shift register in addition to the data reading cycle, so that, even when interruption from others causes the operation of the processor fetching the video data from the shift register to exceed a predetermined scanning time before completion of the operation, the data disposing cycle is inserted right after completion of the operation to disposed high level data that has been sensed for a long period of time by a photosensor of the sensor unit, and normal level data or image information properly representing an image being scanned is obtained.Furthermore, the invention reduces significantly the processing load of the processor with a simple hardware constitution by adding the operation of a run length counter, etc., so as to enable high speed linear data compression.
摘要翻译：本发明与从处理器单元提供的读取信号同步地直接控制开始将时钟脉冲施加到图像传感器单元的移位寄存器，以传送图像的连续扫描线的视频数据。将一个扫描线从移位寄存器到处理器单元的视频数据的传送时间与预定时间段进行比较。如果传送时间超过预定时间段，则在移位寄存器中的一条扫描线的视频数据已被传送到处理器单元之后，允许将下一个扫描线的视频数据传送到合并寄存器，由此，累积在光电二极管中的下一个扫描线消失。并且，丢弃移位寄存器中的下一扫描线的视频数据。此外，本发明除了数据读取周期之外还提供了移位寄存器的操作模式中的数据设置周期，使得即使当从其他的中断导致处理器从移位中取出视频数据的操作时在完成操作之前将其注册超过预定的扫描时间，在完成操作之后将数据设置周期插入到由传感器单元的光电传感器长时间感测到的高电平数据，并且正常获得正确地表示被扫描的图像的高级数据或图像信息。此外，本发明通过添加运行长度计数器等的操作，以简单的硬件结构显着地减少了处理器的处理负荷，以便实现高速线性数据压缩。

9. 发明授权

US4566667A Seat suspension 失效
标题翻译：座椅悬挂
公开(公告)号：US4566667A
公开(公告)日：1986-01-28
申请号：US529682
申请日：1983-09-06
申请人： Hiroshi Yanagisawa
发明人： Hiroshi Yanagisawa
IPC分类号： B60N2/50 , F16M13/00
CPC分类号： B60N2/502 , B60N2/505 , B60N2/508 , B60N2/544 , Y10T74/18864 , Y10T74/20678
摘要： A seat suspension is disclosed in which a movable frame to be mounted onto a seat cushion for an automobile so as to be resiliently movable relative to a base frame mounted onto the floor surface of the automobile. The movable and base frames are connected with each other such that the movable frame can be moved elastically and vertically by means of two links mounted crosswise and pivotally and a spring constantly biasing these two links. Between the movable and base frames, there is provided a lock mechanism which is arranged to lock the movable frame at a desired height level. The lock mechanism includes a lock piece which is provided in either the base frame or the movable frame and has a plurality of engagement recesses in a vertical direction, and a lock pin which is provided in the other frame and is adapted to be engaged within the engagement recesses of the lock piece.
摘要翻译：公开了一种座椅悬架，其中可移动框架被安装到用于汽车的座垫上，以便相对于安装在汽车的地板表面上的基座框架可弹性移动。可移动和底架彼此连接，使得可移动框架可以通过横向和可枢转地安装的两个连杆以及恒定地偏置这两个连杆的弹簧而被弹性和垂直地移动。在可移动框架和底座框架之间设置有锁定机构，该锁定机构被布置成将可移动框架锁定在期望的高度水平。锁定机构包括：锁定片，其设置在基座框架或可动框架中，并且在垂直方向上具有多个接合凹槽;以及锁定销，其设置在另一个框架中并且适于接合在该框架内锁定件的接合凹部。

10. 发明授权

US07486467B2 Magnetic disk drive and method for registering defective sector using timing control of pattern writing 失效
标题翻译：磁盘驱动器和使用模式写入的定时控制注册缺陷扇区的方法
公开(公告)号：US07486467B2
公开(公告)日：2009-02-03
申请号：US11605649
申请日：2006-11-28
申请人： Fuminori Sai , Makoto Takase , Kohji Takasaki , Hiroshi Yanagisawa
发明人： Fuminori Sai , Makoto Takase , Kohji Takasaki , Hiroshi Yanagisawa
IPC分类号： G11B21/12
CPC分类号： G11B5/59633 , G11B5/59666
摘要： Embodiments in accordance with the present invention relate to suppressing effects of the rotational jitter of a rotating medium during self-writing of patterns on the medium. In one embodiment, patterns are written on a track TE first. While a clock frequency is modulated using the difference between the readout time and target time of each pattern PE on the track TE, patterns PF are written on a track TF after a calculated delay time from the readout of each pattern PE. During pattern writing on the track TF, any timing errors of the patterns PE are stored into memory. While the target time for each pattern PF on the track TF is being corrected using the stored timing errors of the patterns PE and the clock frequency is being modulated using the difference between the readout time and corrected target time of each pattern PF, patterns PG are written on a track TG after a calculated delay time from the readout of each pattern PF.
摘要翻译：根据本发明的实施例涉及在图案自写入介质时抑制旋转介质的旋转抖动的影响。在一个实施例中，模式首先写在轨道TE上。在使用轨道TE上的每个图案PE的读出时间和目标时间之间的差来调制时钟频率的情况下，在从每个图案PE的读出计算的延迟时间之后，在轨道TF上写入图案PF。在轨道TF上的模式写入期间，模式PE的任何定时错误都被存储到存储器中。虽然使用存储的图案PE的定时误差来校正轨道TF上的每个图案PF的目标时间，并且使用每个图案PF的读出时间和校正的目标时间之间的差来调制时钟频率，但是图案PG是在从每个图案PF的读出计算的延迟时间之后，在轨道TG上写入。

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