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18 条记录 (耗时 0.019 秒)

    Magnetic disk apparatus, recording and accessing method for performing density recording
    2.
    发明授权
    Magnetic disk apparatus, recording and accessing method for performing density recording 失效
    用于执行密度记录的磁盘装置，记录和存取方法

    公开(公告)号：US5784220A

    公开(公告)日：1998-07-21

    申请号：US810726

    申请日：1997-03-04

    申请人： Kazuo Nishimura ,  Tatsuro Sasamoto ,  Hideaki Tanaka ,  Hiroaki Etoh

    发明人： Kazuo Nishimura ,  Tatsuro Sasamoto ,  Hideaki Tanaka ,  Hiroaki Etoh

    IPC分类号： G11B5/012 ,  G11B5/39 ,  G11B5/55 ,  G11B20/12 ,  G11B21/08 ,  G11B27/10 ,  G11B5/596

    CPC分类号： G11B20/1258 ,  G11B20/1252 ,  G11B5/012 ,  G11B5/5547 ,  G11B2020/10916 ,  G11B5/3967

    摘要： There is used a disk medium in which tracks are divided into a plurality of zones in the radial direction and information is read and written with a constant linear density by using a clock signal of a different frequency every zone. A drive unit forms a dead space corresponding to at least one track at a zone boundary of the disk medium and reads or writes the information. In the case where it is judged that the head passes through the zone boundary by the seeking operation to the cylinder address position instructed from an upper apparatus, the cylinder address instructed from the upper apparatus is corrected on the basis of the number of boundary passing times and the seeking operation is performed.

    摘要翻译： 使用磁盘介质，其中轨道被分成径向方向上的多个区域，并且通过使用每个区域的不同频率的时钟信号以恒定的线密度来读取和写入信息。 驱动单元形成与盘介质的区域边界处的至少一个轨道对应的死区，并读取或写入信息。 在判断头通过搜索操作的区域边界到从上位装置指示的气缸地址位置的情况下，根据边界通过次数来校正从上位装置指示的气缸地址 并执行寻道操作。

    Method of controlling a start-up of a motor used for a disk apparatus
    3.
    发明授权
    Method of controlling a start-up of a motor used for a disk apparatus 失效
    控制用于盘装置的电动机起动的方法

    公开(公告)号：US5623379A

    公开(公告)日：1997-04-22

    申请号：US384959

    申请日：1995-02-07

    申请人： Kazuo Nishimura ,  Tatsuro Sasamoto

    发明人： Kazuo Nishimura ,  Tatsuro Sasamoto

    IPC分类号： G11B19/20 ,  G11B19/22 ,  G11B19/28 ,  H02P6/20 ,  G11B15/48

    CPC分类号： H02P6/20 ,  G11B19/20

    摘要： A method of controlling start-up of a sensorless spindle motor used in a disk apparatus reduces time spent on start-up of a spindle motor with high reliability. The motor is used for rotating a disk on which information is recorded, and no sensor is provided in the motor for sensing an angular position of a rotor relative to a stator of the motor. The motor is operated at a steady rotational speed and is stopped by supplying a stop command. An aligning operation is performed immediately after the motor is stopped. The aligning operation is performed to rotate the rotor to a predetermined angular position relative to the stator of said motor. The motor is operated at a steady speed by a synchronization control when operation of the motor is started by supplying a start command.

    摘要翻译： 在盘装置中使用的无传感器主轴电机的启动控制方法可以节省高可靠性的主轴电动机起动时间。 电动机用于旋转记录有信息的盘，并且在电动机中没有传感器用于感测转子相对于电动机的定子的角位置。 电机以稳定的转速工作，并通过提供停止指令而停止。 在电机停止后立即执行对准操作。 执行对准操作以使转子相对于所述电动机的定子旋转到预定的角位置。 当通过提供启动命令启动电动机的运行时，电动机通过同步控制以稳定的速度运行。

    Head exchange system for disc drive system controlling busy signals in accordance with head offset
    4.
    发明授权
    Head exchange system for disc drive system controlling busy signals in accordance with head offset 失效
    用于磁盘驱动系统的头部交换系统根据头部偏移量控制繁忙信号

    公开(公告)号：US5109502A

    公开(公告)日：1992-04-28

    申请号：US479968

    申请日：1990-02-14

    申请人： Tatsuro Sasamoto ,  Masamichi Suzuki

    发明人： Tatsuro Sasamoto ,  Masamichi Suzuki

    IPC分类号： G11B5/55 ,  G11B21/08

    CPC分类号： G11B21/083 ,  G11B5/5534

    摘要： A head exchange system for a disc drive system for controlling the position of a head so as to cancel, during a head exchange, the previously measured offset value between the head and a track of a recording disc. The head exchange system has a head exchanger for selecting one of a plurality of heads in response to a signal from the host controller for storage of the information to the selected track of the disc. The head exchange system also has a busy signal transmitting unit for transmitting, when changing the selected head, a busy signal to the host controller for a predetermined time when a difference between the offset value for a current selected head and the offset value for a next selected head is bigger than a predetermined value. The busy signal transmitting unit has a busy table for storing a plurality of flag information between each head and the other heads and transmits a busy signal to the host controller when the difference between the offset value for the current selected head and the offset value for the next selected head is bigger than the predetermined value.

    Information recording medium having divided cylinder address storage
    6.
    发明授权
    Information recording medium having divided cylinder address storage 失效
    信息记录介质具有分割的气缸地址存储

    公开(公告)号：US6034830A

    公开(公告)日：2000-03-07

    申请号：US789122

    申请日：1997-01-27

    申请人： Tatsuro Sasamoto

    发明人： Tatsuro Sasamoto

    IPC分类号： G11B20/10 ,  G11B5/012 ,  G11B5/55 ,  G11B5/596 ,  G11B20/12 ,  G11B21/08 ,  G11B21/10 ,  G11B27/30 ,  G11B5/09

    CPC分类号： G11B5/012 ,  G11B20/1217 ,  G11B21/083 ,  G11B27/3027 ,  G11B2020/10916 ,  G11B2020/1232 ,  G11B2020/1265 ,  G11B2020/1292 ,  G11B2220/2516 ,  G11B5/5526 ,  G11B5/59655

    摘要： The present invention relates to an information recording medium for a disk drive having improved recording efficiency. The information recording medium is provided with discrete servo and data areas, with servo information being recorded in the servo areas. Cylinder information included in one or more servo areas is used to locate particular data areas on a disk. In the present invention at least partial cylinder information in one servo area is used to locate more than one data area by dividing the cylinder information into different servo areas, or using the cylinder information in one servo area to locate a data area associated with another servo area. By recording the divided cylinder information in respective ones of the servo areas provided on a given cylinder on the disk, less disk space is needed for cylinder information, so the size of the data areas can be increased and recording efficiency can be improved.

    摘要翻译： 本发明涉及一种具有提高的记录效率的盘驱动器的信息记录介质。 该信息记录介质设有离散的伺服和数据区，伺服信息被记录在伺服区中。 包含在一个或多个伺服区域中的气缸信息用于定位磁盘上的特定数据区域。 在本发明中，通过将一个伺服区域中的气缸信息分割成不同的伺服区域，或者使用一个伺服区域中的气缸信息来定位与另一个伺服区域相关联的数据区域，一个伺服区域中的至少部分气缸信息用于定位多于一个数据区域 区。 通过将设置在盘上的给定圆筒上的各个伺服区域中的分割圆筒信息记录在圆筒信息中，需要较少的盘空间，因此可以提高数据区域的大小并且可以提高记录效率。

    Magnetic disk apparatus with improved positioning control of magnetic head
    7.
    发明授权
    Magnetic disk apparatus with improved positioning control of magnetic head 失效
    具有改善磁头定位控制的磁盘装置

    公开(公告)号：US5541785A

    公开(公告)日：1996-07-30

    申请号：US122481

    申请日：1993-09-27

    申请人： Tatsuro Sasamoto ,  Kazunori Mori

    发明人： Tatsuro Sasamoto ,  Kazunori Mori

    IPC分类号： G11B21/10 ,  G11B5/596

    CPC分类号： G11B5/59688 ,  G11B5/59622

    摘要： A disk storage device includes at least one disk, a head for scanning a principal surface of the disk in a generally radial direction thereof for reproducing a servo control signal in response to a servo pattern that is recorded on the principal surface, a rotary mechanism for moving the head along the principal surface of the disk generally in the radial direction, an amplifier supplied with the servo signal reproduced at the head for amplifying the same with a predetermined gain, a signal processing circuit for extracting first and second positional control signals each having a phase that is offset with respect to the phase of the other positional control signal by 90 degrees, from the servo control signal, a level detection circuit for detecting a head position at which the first and second positional control signals have simultaneously an identical level and further for detecting the level of the first and second positional control signals at the detected head position, a gain control circuit for controlling the gain of the amplifier such that an absolute value of the foregoing level is set to a predetermined value, and a head position control circuit for controlling a driving circuit in response to a combination of the first and second positional control signals, the head position control circuit locating the head on a predetermined recording track based upon a head position in which the first and second positional control signals have the same level simultaneously.

    摘要翻译： 磁盘存储装置包括至少一个磁盘，用于沿其大致径向的方向扫描磁盘的主表面的磁头，用于响应于记录在主表面上的伺服模式再现伺服控制信号;旋转机构， 大致沿径向沿着盘的主表面移动头部，放大器，其提供有在头部再现的伺服信号，用于以预定的增益对其进行放大;信号处理电路，用于提取第一和第二位置控制信号，每个具有 相对于另一位置控制信号的相位相对于伺服控制信号偏移90度的相位，用于检测第一和第二位置控制信号同时具有相同电平的磁头位置的电平检测电路，以及 进一步用于检测在检测到的头位置处的第一和第二位置控制信号的电平，增益con 控制电路，用于控制放大器的增益，使得上述电平的绝对值被设置为预定值;以及磁头位置控制电路，用于响应于第一和第二位置控制信号的组合来控制驱动电路， 头部位置控制电路基于头部位置将头部定位在预定的记录轨道上，其中第一和第二位置控制信号同时具有相同的水平。

    Servo pattern writing apparatus, servo pattern writing method, servo pattern reading apparatus, and servo pattern reading method
    8.
    发明申请
    Servo pattern writing apparatus, servo pattern writing method, servo pattern reading apparatus, and servo pattern reading method 失效
    伺服模式写入装置，伺服模式写入方式，伺服模式读取装置以及伺服模式读取方法

    公开(公告)号：US20080158717A1

    公开(公告)日：2008-07-03

    申请号：US11901403

    申请日：2007-09-17

    申请人： Tatsuro Sasamoto

    发明人： Tatsuro Sasamoto

    IPC分类号： G11B5/596

    CPC分类号： G11B5/59627

    摘要： There is provided a technique capable of eliminating the need to create data for compensating the displacement of a servo pattern occurring at the time of writing the servo pattern using an amplitude method and thereby of significantly reducing the production time of a disk medium.A servo pattern writing apparatus that uses a write head to write a servo pattern on a recording medium according to an amplitude method, comprises: a position sensor 8 that detects the displacement amount of the write head with respect to its reference position in the track crossing direction; and a delay amount adjustment circuit 10 that writes a servo pattern in correspondence with a servo pattern write phase amount which is set for compensating the displacement amount detected by the position sensor 8 at the time of demodulation of the servo pattern.

    摘要翻译： 提供了一种技术，其能够消除创建用于补偿使用振幅方法写入伺服模式时发生的伺服模式的位移的数据的需要，从而显着减少磁盘介质的生产时间。 一种伺服模式写入装置，其使用写入头根据振幅方法将伺服模式写入记录介质上，包括：位置传感器8，其检测写入头相对于轨道交叉中的其参考位置的位移量 方向; 以及延迟量调整电路10，其对与在解调伺服模式时补偿由位置传感器8检测到的位移量设定的伺服模式写入相位量相对应地写入伺服模式。