利索-全球专利检索

  1. Login
  2. Sign Up

Search Results

523 records (took 0.018 seconds)

    Tracking control system with correction capabilities for correcting disagreement between optical axes
    63.
    发明授权
    Tracking control system with correction capabilities for correcting disagreement between optical axes 失效
    跟踪控制系统具有校正功能，可纠正光轴之间的不一致

    公开(公告)号：US5566152A

    公开(公告)日：1996-10-15

    申请号：US534731

    申请日：1995-09-27

    Applicant: Kouichi Takamine ,  Katsuya Watanabe

    Inventor： Kouichi Takamine ,  Katsuya Watanabe

    IPC: G11B7/085 ,  G11B7/09

    CPC classification number: G11B7/094 ,  G11B7/08517 ,  G11B7/08541 ,  G11B7/08564 ,  G11B7/0903

    Abstract: A tracking control system according to the present invention includes an objective lens for converging a light beam at a point on a recording medium to form a converging spot; a galvano-mirror for receiving a driving signal and for moving the converging spot across tracks provided on the recording medium in response to the driving signal; a tracking error detecting section for generating a tracking error signal according to a position of the converging spot with respect to one of the tracks; a tracking servo control section for generating a first driving signal according to the tracking error signal end for feeding the first driving signal to the galvano-mirror as the driving signal, by which the galvano-mirror is driven so that the converging spot is located on the one track; a signal selection circuit for turning on and off the tracking servo control section; a driving section for, when tracking servo control is turned off, generating a second driving signal by which the galvano-mirror is driven so that the converging spot crosses predetermined number of tracks among the tracks; a measuring section for, when the tracking servo control is turned off, measuring a degree of disagreement of optical axes based on the tracking error signal obtained by driving the galvano-mirror with the second driving signal; and a correcting section for correcting the disagreement of optical axes by constantly supplying the galvano-mirror with a current for making the degree of disagreement of optical axes substantially zero based on the measured degree of disagreement of optical axes.

    Abstract translation: 根据本发明的跟踪控制系统包括用于在记录介质上的点聚焦光束以形成会聚点的物镜; 用于接收驱动信号并且用于响应于驱动信号将会聚点移动到设置在记录介质上的轨道的电流镜; 跟踪误差检测部分，用于根据所述会聚点相对于所述轨道之一的位置产生跟踪误差信号; 跟踪伺服控制部分，用于根据跟踪误差信号端生成第一驱动信号，以将第一驱动信号馈送到电流镜作为驱动信号，由此驱动电流镜，使得会聚点位于 一轨 用于接通和关断跟踪伺服控制部分的信号选择电路; 驱动部，用于当跟踪伺服控制被关闭时，产生驱动电流镜的第二驱动信号，使得会聚点跨越轨迹中的预定数量的轨道; 测量部分，用于当跟踪伺服控制关闭时，基于通过用第二驱动信号驱动电流反射镜获得的跟踪误差信号来测量光轴的不一致程度; 以及校正部分，用于通过不断地向电流镜提供基于所测量的光轴不一致程度使光轴的不一致程度基本上为零的电流来校正光轴的不一致。

    Magneto-optical disk recording and reading apparatus and method wherein the recording head is controlled in the radial direction of the disk to a desired position
    65.
    发明授权
    Magneto-optical disk recording and reading apparatus and method wherein the recording head is controlled in the radial direction of the disk to a desired position 失效
    磁光盘记录和读取装置和方法，其中将记录头沿盘的径向方向控制到期望的位置

    公开(公告)号：US5495455A

    公开(公告)日：1996-02-27

    申请号：US50657

    申请日：1993-04-22

    Applicant: Tetsuji Kawashima ,  Tetsu Watanabe

    Inventor： Tetsuji Kawashima ,  Tetsu Watanabe

    IPC: G11B7/085 ,  G11B11/105 ,  G11B19/14 ,  G11B11/00 ,  G11B17/22

    CPC classification number: G11B19/14 ,  G11B11/10508 ,  G11B11/10573 ,  G11B11/10595 ,  G11B7/08517

    Abstract: A magneto-optical disc recording apparatus includes a magnetic head, an optical head, a position detector and a controller. The magnetic head supplies a vertical magnetic field corresponding to recording data to a magneto-optical disc. The optical head emits a light beam to the magneto-optical disc through a substrate of the magneto-optical disc. The magneto-optical disc is arranged between the magnetic head and the optical head. The optical head has an actuator for moving an objective lens in a tracking direction. The position detector detects the displacement of the actuator. The controller controls a recording operation of the magnetic head and the optical head. The recording operation is started when a result of detection by the position detector reaches a predetermined value.

    Abstract translation: 磁光盘记录装置包括磁头，光头，位置检测器和控制器。 磁头将对应于记录数据的垂直磁场提供给磁光盘。 光头通过磁 - 光盘的基片将光束发射到磁 - 光盘。 磁光盘布置在磁头和光头之间。 光学头具有用于在跟踪方向上移动物镜的致动器。 位置检测器检测致动器的位移。 控制器控制磁头和光学头的记录操作。 当位置检测器的检测结果达到预定值时，开始记录操作。

    Tracking control apparatus and track jump detection apparatus
    66.
    发明授权
    Tracking control apparatus and track jump detection apparatus 失效
    跟踪控制装置和轨道跳跃检测装置

    公开(公告)号：US5491676A

    公开(公告)日：1996-02-13

    申请号：US261088

    申请日：1994-06-15

    Applicant: Hiroyuki Yamaguchi ,  Mitsuro Moriya ,  Shinichi Yamada

    Inventor： Hiroyuki Yamaguchi ,  Mitsuro Moriya ,  Shinichi Yamada

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

    CPC classification number: G11B7/0946 ,  G11B7/08517

    Abstract: A tracking control apparatus having a track jump detection device and a memory for storing driving signals for the tracking control detects a track jump, and when such a track jump has occured, makes the tracking control inoperative, decelerates the velocity of light beam caused by the track jump by driving a voice coil motor using signals inverted from the signals stored in the memory, and, thereby, restarts the tracking control quickly.

    Abstract translation: 具有轨道跳跃检测装置和用于存储用于跟踪控制的驱动信号的存储器的跟踪控制装置检测轨道跳跃，并且当发生这种轨道跳跃时，使得跟踪控制不起作用，从而减小由 通过使用从存储在存储器中的信号反转的信号来驱动音圈电机，从而快速重新启动跟踪控制。

    Track jump control means for a disk apparatus
    67.
    发明授权
    Track jump control means for a disk apparatus 失效
    用于盘装置的跟踪跳转控制装置

    公开(公告)号：US5481517A

    公开(公告)日：1996-01-02

    申请号：US93440

    申请日：1993-07-16

    Applicant: Kyosuke Yoshimoto ,  Yoshiki Nakajima ,  Kimiyuki Koyanagi ,  Osamu Ito ,  Akira Mashimo ,  Hiroyuki Onda ,  Yutaka Kobayashi ,  Koji Yamana

    Inventor： Kyosuke Yoshimoto ,  Yoshiki Nakajima ,  Kimiyuki Koyanagi ,  Osamu Ito ,  Akira Mashimo ,  Hiroyuki Onda ,  Yutaka Kobayashi ,  Koji Yamana

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

    CPC classification number: G11B7/08517

    Abstract: The disk drive apparatus of the present invention has an optical pickup that jumps a track to perform track jumping when a jumping voltage is impressed, and that traces a track by performing brake operation when a braking voltage is applied, and actuator that drives the optical pickup, a signal processing part that performs focus and tracking control with respect to the optical pickup, a movement time measurement part that measures the movement time when a light beam emitted from the optical pickup is moved to cross a track to a required track, a voltage control part that uses the results of measurement to generate parameters and a voltage value that is applied to the actuator, a storage part that stores voltage value that is generated by the voltage value setting part, and that after a disk is loaded, first stores data of that disk in the storage part and uses those data values according to the track jump operation.

    Abstract translation: 本发明的磁盘驱动装置具有跳跃轨道的光拾取器，当施加跳跃电压时进行轨道跳跃，并且当施加制动电压时通过执行制动操作来跟踪轨道，以及驱动光学拾取器的致动器 执行相对于光学拾取器的聚焦和跟踪控制的信号处理部件，测量从光学拾取器发射的光束移动到所需轨道的轨迹的移动时间的移动时间测量部件，电压 使用测量结果的控制部件生成参数和施加到致动器的电压值，存储部分，其存储由电压值设定部分产生的电压值，以及在盘装载之后首先存储数据 并且根据轨道跳转操作使用那些数据值。

    Tracking servo apparatus for use in an optical disk player
    68.
    发明授权
    Tracking servo apparatus for use in an optical disk player 失效
    用于光盘播放器的跟踪伺服装置

    公开(公告)号：US5471448A

    公开(公告)日：1995-11-28

    申请号：US335086

    申请日：1994-11-07

    Applicant: Fumihiko Yokogawa

    Inventor： Fumihiko Yokogawa

    IPC: G11B7/085 ,  G11B7/095

    CPC classification number: G11B7/08517 ,  G11B7/0953

    Abstract: A tracking servo apparatus for an optical disk player enables a braking operation to rapidly draw into tracking servo control even in case of a double density track. The tracking servo apparatus generates an odd/even discrimination signal indicating on which of an odd number track or an even number track a position for reading information by a pick is currently present, samples a tracking error signal according to an edge position of the odd/even discrimination signal, selectively outputs either a positive or a negative section of the tracking error signal according a polarity of the sampled tracking error signal as a brake signal to a driving means for a tracking actuator, and thus draws the position for reading information by a pick-up onto a track which can be put under tracking servo control.

    Abstract translation: 用于光盘播放器的跟踪伺服装置即使在双重密度轨迹的情况下也能够使制动操作快速地进入跟踪伺服控制。 跟踪伺服装置产生奇数/偶数鉴别信号，该奇数/偶数鉴别信号指示当前存在用于通过拾取读取信息的位置的奇数轨道或偶数轨道上的哪一个，根据奇数/偶数轨迹的边缘位置对跟踪误差信号进行采样， 偶数鉴别信号，根据作为制动信号的采样跟踪误差信号的极性选择性地将跟踪误差信号的正或负部分输出到用于跟踪致动器的驱动装置，并且因此绘制用于读取信息的位置 拾取到可以被跟踪伺服控制的轨道上。

    Apparatus for controlling a optical disk drive
    70.
    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

    Applicant: Naoyuki Kagami ,  Hiroaki Kubo ,  Makoto Takekoshi

    Inventor： Naoyuki Kagami ,  Hiroaki Kubo ,  Makoto Takekoshi

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

    CPC classification number: G11B7/08517 ,  G11B7/08529 ,  G11B7/0946

    Abstract: 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.

    Abstract translation: 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。

Patent Agency Ranking