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34 条记录 (耗时 0.019 秒)

    Apparatus and method for controlling the velocity of a disk storage head
    21.
    发明授权
    Apparatus and method for controlling the velocity of a disk storage head 失效
    用于控制盘存储头的速度的装置和方法

    公开(公告)号：US5255253A

    公开(公告)日：1993-10-19

    申请号：US772725

    申请日：1991-10-07

    申请人： Naoyuki Kagami ,  Hiroaki Kubo ,  Keiichi Okada ,  Makoto Takekoshi

    发明人： Naoyuki Kagami ,  Hiroaki Kubo ,  Keiichi Okada ,  Makoto Takekoshi

    IPC分类号： G11B7/085 ,  G11B21/08 ,  G11B7/00

    CPC分类号： G11B7/08517 ,  G11B21/083 ,  G11B7/08535

    摘要： In this invention, a driving circuit for moving a head in the radial direction on the recording surface of a disk is coupled to a velocity detecting circuit for detecting the velocity at which the head moves. A velocity profile is provided for storing information on the target velocity of the head. A driving signal generating circuit is coupled to the velocity profile and the velocity detecting circuit for comparing a signal from the velocity detecting circuit with a signal from the velocity profile. The driving signal generating circuit outputs a driving signal to the driving circuit based on the result of the comparison. A controller is coupled to the driving circuit for measuring a time required for moving the head a predetermined distance at a predetermined reference value, and modifying the driving signal based on the result of the comparison. Scatter in feedback quantities or fluctuation in the driving signal during velocity control is thereby corrected.

    Apparatus for controlling a optical disk drive
    24.
    发明授权
    Apparatus for controlling a optical disk drive 失效
    用于控制光盘驱动器的装置

    公开(公告)号：US5402402A

    公开(公告)日：1995-03-28

    申请号：US26238

    申请日：1993-03-01

    申请人： Naoyuki Kagami ,  Hiroaki Kubo ,  Makoto Takekoshi

    发明人： Naoyuki Kagami ,  Hiroaki Kubo ,  Makoto Takekoshi

    IPC分类号： G11B21/10 ,  G11B7/085 ,  G11B7/09 ,  G11B7/00

    CPC分类号： G11B7/08517 ,  G11B7/08529 ,  G11B7/0946

    摘要： An optical disk drive apparatus operable under track following mode and seek mode wherein, upon the detection of a track following operation error, a seek operation is initiated for seeking a new target track at a predetermined number of tracks distant from the current track. The seek operation is controlled to follow a velocity profile thus regaining control over an optical head that may have been jolted into an out of control velocity when the track following error occurred. The velocity profile provides for a reduced velocity as the target track is approached. The new target track is selected at a relatively large number of tracks distant from the current track if the head velocity is high and at a relatively small number of current tracks if the head velocity is low. If the current track is sensed to be an outer track, the new target track is selected toward the inner track and if the current track is sensed to be an inner track, the new target track is selected to be an outer track.

    摘要翻译： 一种光盘驱动装置，其在跟踪跟踪模式和追踪模式下可操作，其中，在检测到跟踪操作错误时，开始寻找操作，以在远离当前轨迹的预定数量的轨道上寻找新的目标轨迹。 搜索操作被控制以跟随速度分布，从而重新获得当光轨跟随误差发生时可能已经颠簸到失控速度的光学头的控制。 当目标轨迹接近时，速度分布提供了一个减小的速度。 如果头部速度较高，并且如果头部速度较低，则在相对较少数量的当前轨道上，在距离当前轨迹的相对较多数量的轨道上选择新的目标轨迹。 如果当前轨道被感测为外部轨道，则向内轨道选择新的目标轨道，并且如果当前轨道被感测为内部轨道，则将新的目标轨道选择为外部轨道。

    Focusing servo in an optical disk drive
    25.
    发明授权
    Focusing servo in an optical disk drive 失效
    在光盘驱动器中聚焦伺服

    公开(公告)号：US5384762A

    公开(公告)日：1995-01-24

    申请号：US191738

    申请日：1994-02-04

    申请人： Naoyuki Kagami ,  Hiroaki Kubo ,  Keiichi Okada

    发明人： Naoyuki Kagami ,  Hiroaki Kubo ,  Keiichi Okada

    IPC分类号： G11B7/085 ,  G11B7/09 ,  G11B7/095 ,  G11B7/00

    CPC分类号： G11B7/08529 ,  G11B7/08511 ,  G11B7/0941

    摘要： An optical disk drive includes a gain control for controlling the gain of a focus servo loop in response to the seek velocity of an optical head. At a low seek velocity, the focus servo gain is reduced to minimize the influence of beam scattering on the groove of an optical disk onto a focusing error signal (FES) and a tracking error signal (TES).

    摘要翻译： 光盘驱动器包括用于响应于光学头的寻道速度来控制聚焦伺服环路的增益的增益控制。 在低寻道速度下，降低聚焦伺服增益以最小化光束散射对光盘的凹槽对聚焦误差信号（FES）和跟踪误差信号（TES）的影响。

    Optical disk drive apparatus for searching a target track
    26.
    发明授权
    Optical disk drive apparatus for searching a target track 失效
    用于搜索目标轨道的光盘驱动装置

    公开(公告)号：US5339299A

    公开(公告)日：1994-08-16

    申请号：US978604

    申请日：1992-11-19

    申请人： Naoyuki Kagami ,  Hiroaki Kubo

    发明人： Naoyuki Kagami ,  Hiroaki Kubo

    IPC分类号： G11B7/085 ,  G11B17/22

    CPC分类号： G11B7/08541

    摘要： The present invention provides an optical disk drive apparatus, and a method for driving the same, which makes the most of the ability of acceleration and deceleration in an actuator in a simple system configuration to realize fast seek operation of high reliability. An optical disk drive apparatus according to the present invention provides the means for determining whether the number of tracks from a current track to a target track is smaller than the predetermined number and the means for driving the fine actuator in the tracking direction under the velocity control based on a tracking error signal if the number of tracks from the current track to the target track is smaller than the predetermined number.

    摘要翻译： 本发明提供了一种光盘驱动装置及其驱动方法，其以简单的系统配置最大程度地实现致动器中的加速和减速的能力，以实现高可靠性的快速寻道操作。 根据本发明的光盘驱动装置提供了用于确定从当前轨道到目标轨道的轨道数是否小于预定数量的装置，以及用于在速度控制下沿跟踪方向驱动精细致动器的装置 如果从当前轨道到目标轨道的轨道数量小于预定数量，则基于跟踪误差信号。

    Data storage device having acceleration sensor attached to circuit board for detecting vibrations in planar rotation direction along circuit board
    27.
    发明授权
    Data storage device having acceleration sensor attached to circuit board for detecting vibrations in planar rotation direction along circuit board 失效
    具有附加到电路板的加速度传感器的数据存储装置，用于沿着电路板检测沿平面旋转方向的振动

    公开(公告)号：US06961202B2

    公开(公告)日：2005-11-01

    申请号：US10421447

    申请日：2003-04-23

    申请人： Gaku Ikedo ,  Mirei Hosono ,  Yoshitaka Kakizaki ,  Naoyuki Kagami

    发明人： Gaku Ikedo ,  Mirei Hosono ,  Yoshitaka Kakizaki ,  Naoyuki Kagami

    IPC分类号： G11B33/14 ,  G11B21/08 ,  G11B21/10 ,  G11B25/04 ,  G11B33/08 ,  G11B33/12 ,  G11B5/596 ,  G11B5/012

    CPC分类号： G11B33/121 ,  G11B25/043 ,  G11B33/08

    摘要： A data storage device includes an enclosure case and a circuit board attached to an outer surface of the enclosure case, the enclosure case containing a spindle motor and a circular movement actuator, the spindle motor being for rotating a storage medium, the circular movement actuator being for controlling a position of a read and write head for reading data from the storage medium and for writing data to the storage medium, the circuit board having an interface cable connector at one end portion thereof for establishing a connection to a host. The circuit board is located between the interface cable connector and the spindle motor, and is attached to the enclosure case by use of a plurality of fastening members. An acceleration sensor is attached to the circuit board next to the fastening members for detecting vibrations applied to the data storage device in a rotation direction in a plane along the circuit board.

    摘要翻译： 数据存储装置包括外壳和附接到外壳的外表面的电路板，外壳包含主轴电机和圆形运动致动器，主轴电机用于旋转存储介质，圆周运动致动器为 用于控制用于从存储介质读取数据并用于将数据写入存储介质的读写头的位置，所述电路板在其一个端部具有用于建立到主机的连接的接口电缆连接器。 电路板位于接口电缆连接器和主轴电机之间，并且通过使用多个紧固件附接到外壳。 加速度传感器附着在紧固部件旁边，用于检测沿着电路板的平面中沿旋转方向施加到数据存储装置的振动。

    Optical disk drive and method for counting the number of tracks on an optical disk
    29.
    发明授权
    Optical disk drive and method for counting the number of tracks on an optical disk 失效
    光盘驱动器和计数光盘上的轨道数的方法

    公开(公告)号：US5199017A

    公开(公告)日：1993-03-30

    申请号：US757775

    申请日：1991-09-11

    申请人： Naoyuki Kagami ,  Hiroaki Kubo ,  Keiichi Okada

    发明人： Naoyuki Kagami ,  Hiroaki Kubo ,  Keiichi Okada

    IPC分类号： G11B7/085

    CPC分类号： G11B7/08541

    摘要： The invention is a positive peak level comparator for generating a positive peak pulse when a TES (Tracking Error Signal) is higher than a predetermined positive level, a negative peak level comparator for generating a negative peak pulse when the TES is lower than a predetermined negative level, and a logic circuit for generating an output pulse when said positive peak pulse and said negative peak pulse have been alternately input thereto. The arrangement prevents the TES from being miscounted even if the TES is distrubed due to the occurrence of, for example, a noise at a level close to either said predetermined positive level or said predetermined negative level and either said peak pulse or said negative pulse is successively generated.

    摘要翻译： 本发明是一个正峰值电平比较器，用于当TES（跟踪误差信号）高于预定的正电平时产生正峰值脉冲，当TES低于预定的负电平时产生负峰值脉冲的负峰值电平比较器 以及用于当所述正峰值脉冲和所述负峰值脉冲已被交替地输入时产生输出脉冲的逻辑电路。 即使由于发生例如接近于所述预定正电平或所述预定负电平的电平的噪声而导致TES被分配，并且所述峰值脉冲或所述负脉冲是 先后产生。