利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

41 条记录 (耗时 0.029 秒)

    Head position detecting method and apparatus
    11.
    发明授权
    Head position detecting method and apparatus 失效
    头位置检测方法和装置

    公开(公告)号：US5523900A

    公开(公告)日：1996-06-04

    申请号：US194663

    申请日：1994-02-08

    申请人： Tatsuhiko Kosugi ,  Shuichi Hashimoto ,  Toru Shinohara

    发明人： Tatsuhiko Kosugi ,  Shuichi Hashimoto ,  Toru Shinohara

    IPC分类号： G11B19/28 ,  G11B5/596 ,  G11B20/14 ,  G11B20/18 ,  G11B21/10

    CPC分类号： G11B21/106 ,  G11B5/59616

    摘要： A head position detecting method and apparatus for detecting a phase difference from servo data on a recording medium to detect the position of a head. This head position detecting method and apparatus detect the phase differences between the read pulse of the servo data read by the head and reference clocks, and average the phase differences to detect the head position. A training area having a timing signal recorded therein is provided before the servo data on the recording medium. A phase-lock loop circuit for generating reference clocks is synchronized with the timing signal to accurately detect the phase differences. An integrator is used to average the phase differences. This design ensures accurate detection of the head position even under fast seek. Further, a phase difference signal around a target cylinder is obtained by selecting the phase of the reference clock in accordance with the position of the target cylinder.

    摘要翻译： 一种头位置检测方法和装置，用于检测与记录介质上的伺服数据的相位差以检测头的位置。 这种头部位置检测方法和装置检测由头部和参考时钟读取的伺服数据的读取脉冲之间的相位差，并且平均相位差以检测头部位置。 在记录介质上的伺服数据之前提供其中记录有定时信号的训练区域。 用于产生参考时钟的锁相环电路与定时信号同步，以准确地检测相位差。 积分器用于平均相位差。 这种设计确保即使在快速寻找下也能准确检测头部位置。 此外，通过根据目标气缸的位置选择参考时钟的相位来获得目标气缸周围的相位差信号。

    Method and system for positioning head on target cylinder of disk
    12.
    发明授权
    Method and system for positioning head on target cylinder of disk 失效
    将磁头定位在磁盘目标磁盘上的方法和系统

    公开(公告)号：US5311379A

    公开(公告)日：1994-05-10

    申请号：US766399

    申请日：1991-09-27

    申请人： Tohru Shinohara ,  Shuichi Hashimoto

    发明人： Tohru Shinohara ,  Shuichi Hashimoto

    IPC分类号： G11B21/10 ,  G11B5/55 ,  G11B5/596

    CPC分类号： G11B5/5547

    摘要： A method of positioning a magnetic head on a target cylinder of a magnetic disk uses a position signal derived from a servo signal which is read from a magnetic disk using a magnetic head. The servo signal includes at least first and second servo signal components on even cylinders of the magnetic disk and includes at least third and fourth servo signal components on odd cylinders of the magnetic disk. The position signal is used for moving the magnetic head to a desired cylinder. The method comprises the steps of obtaining a first position signal for positioning the magnetic head to an odd cylinder on the magnetic disk based on a difference between peak values of the first and second servo signal components, obtaining a second position signal for positioning the magnetic head to an even cylinder on the magnetic disk based on a difference between peak values of the third and fourth servo signal components, and using only one of the first and second position signals to position the magnetic head to the target cylinder depending on a cylinder address of the target cylinder.

    摘要翻译： 将磁头定位在磁盘的目标气缸上的方法使用从使用磁头从磁盘读取的伺服信号导出的位置信号。 伺服信号在磁盘的偶数圆柱上至少包括第一和第二伺服信号分量，并且在磁盘的奇数圆柱上包括至少第三和第四伺服信号分量。 位置信号用于将磁头移动到所需的气缸。 该方法包括以下步骤：基于第一和第二伺服信号分量的峰值之间的差，获得用于将磁头定位到磁盘上的奇数圆柱的第一位置信号，获得用于定位磁头的第二位置信号 基于第三和第四伺服信号分量的峰值之间的差异，并且仅使用第一和第二位置信号中的一个将磁头定位到目标圆柱体，根据圆柱体地址 目标气缸。

    Method and circuit for controlling head position
    16.
    发明授权
    Method and circuit for controlling head position 失效
    控制头部位置的方法和电路

    公开(公告)号：US6009052A

    公开(公告)日：1999-12-28

    申请号：US164783

    申请日：1993-12-10

    申请人： Shuichi Hashimoto

    发明人： Shuichi Hashimoto

    IPC分类号： G11B5/55 ,  G11B21/08 ,  G11B7/00 ,  G11B3/90

    CPC分类号： G11B21/085 ,  G11B5/5547 ,  G11B5/5582

    摘要： A head positioning method controls a position of a servo head from a first arbitrary track position on a disk to a second arbitrary track position on the disk during a seek operation, where the servo head reads a servo signal from tracks formed on the disk. The head positioning method comprises the steps of setting an moving quantity of the servo head, controlling velocity and position of the servo head depending on the initial moving quantity and a difference between a present track position of the servo head and the second arbitrary track position, and ending the seek operation after a predetermined access time elapses from a start of the seek operation when an actual access time is shorter than the predetermined access time. The predetermined access time is preset depending on the initial moving quantity, and the actual access time is a time it actually takes for the servo head to move from the first arbitrary track position to the second arbitrary track position.

    摘要翻译： 磁头定位方法在搜索操作期间控制伺服磁头从盘上的第一任意轨道位置到盘上的第二任意轨道位置的位置，其中伺服头从形成在盘上的轨道读取伺服信号。 头定位方法包括以下步骤：根据初始移动量和伺服头的当前轨道位置与第二任意轨道位置之间的差设定伺服头的移动量，控制伺服头的速度和位置， 并且当实际访问时间短于预定访问时间时，在从搜索操作开始经过预定访问时间之后结束搜索操作。 预定的访问时间是根据初始移动量而预先设定的，实际访问时间是伺服头从第一任意轨道位置移动到第二任意轨道位置实际需要的时间。

    Mask having a pattern for detecting illuminance nonuniformity
    17.
    发明授权
    Mask having a pattern for detecting illuminance nonuniformity 失效
    掩模具有用于检测照度不均匀性的图案

    公开(公告)号：US5709970A

    公开(公告)日：1998-01-20

    申请号：US647705

    申请日：1996-05-14

    申请人： Shuichi Hashimoto

    发明人： Shuichi Hashimoto

    IPC分类号： G03F1/44 ,  G03F7/20 ,  H01L21/027 ,  G03F9/00

    CPC分类号： G03F7/70133 ,  G03F1/44 ,  G03F7/70358

    摘要： There is provided a mask used in a scan-exposing method of scanning a photosensitive substrate and a mask having a pattern formed therein in relation to a slit-shaped illuminated region, so that the photosensitive substrate is exposed to the pattern having an area larger than that of the slit-shaped illuminated region. The mask has an illuminance nonuniformity detecting pattern formed at an edge region of the mask along a scanning direction, beside a main pattern region of the mask.

    摘要翻译： 提供了用于扫描感光基板的扫描曝光方法中的掩模和相对于狭缝状照射区域形成有图案的掩模，使得感光基板暴露于具有大于 狭缝形状的照明区域。 掩模具有在掩模的边缘区域沿扫描方向形成的照度不均匀性检测图案，除了掩模的主图案区域之外。

    Method and apparatus for eliminating noises with a read operation of magnetic disk unit
    18.
    发明授权
    Method and apparatus for eliminating noises with a read operation of magnetic disk unit 失效
    用于通过磁盘单元的读取操作来消除噪声的方法和装置

    公开(公告)号：US5566296A

    公开(公告)日：1996-10-15

    申请号：US329450

    申请日：1994-10-26

    申请人： Hideki Ohmori ,  Shuichi Hashimoto

    发明人： Hideki Ohmori ,  Shuichi Hashimoto

    IPC分类号： G11B19/02 ,  G11B19/04 ,  G11B20/24 ,  G11B5/02 ,  G06F11/34

    CPC分类号： G11B19/04 ,  G11B19/02 ,  G11B20/24

    摘要： A processor of a drive unit positions a head to a designated cylinder position of a disk medium on the basis of a command notified from an upper controller through a data bus and amplifies a read signal by a read amplifier and, after that, transmits the amplified read signal to the upper controller through a read signal line. A data disconnecting circuit is provided for the data bus from an upper apparatus to the processor. The data disconnecting circuit switches the data bus to a disconnection state by a control signal which is generated from the upper apparatus during the data reading operation. When the control signal is interrupted by the end of the data reading operation, the data bus is returned to the connection state.

    摘要翻译： 驱动单元的处理器根据从上控制器通过数据总线通知的命令将磁头定位到盘介质的指定气缸位置，并且通过读放大器放大读信号，然后将放大 通过读信号线向上控制器读信号。 数据总线从上位机向处理器提供数据断开电路。 数据断开电路通过在数据读取操作期间从上位装置产生的控制信号将数据总线切换到断开状态。 当控制信号在数据读取操作结束时中断时，数据总线返回到连接状态。

    Servo amplifier circuit
    20.
    发明授权
    Servo amplifier circuit 失效
    伺服放大器电路

    公开(公告)号：US4908561A

    公开(公告)日：1990-03-13

    申请号：US349268

    申请日：1989-05-09

    申请人： Shuichi Hashimoto

    发明人： Shuichi Hashimoto

    IPC分类号： H02P25/06 ,  G11B5/55

    CPC分类号： G11B5/5547

    摘要： A servo amplifier circuit, wherein a target value is obtained based on a detected output voltage of the servo amplifier circuit, and the absolute value of the target value is amplified, and then is inverted only when the target value is negative. An offset adusting is carried out by obtaining a forward offset as an output voltage of the servo amplifier circuit without an inversion and an adjustment when the target value is set to zero, and a reverse offset as an output voltage of the servo amplifier circuit with an inversion and without an adjustment when the target value is set to zero, and by obtaining an offset adjusting value using the forward offset and the reverse offset. The absolute value is modified using the offset adjusting value.