Optical disk apparatus and focus control method thereof
    1.
    发明申请
    Optical disk apparatus and focus control method thereof 失效
    光盘装置及其聚焦控制方法

    公开(公告)号:US20030053383A1

    公开(公告)日:2003-03-20

    申请号:US10107691

    申请日:2002-03-27

    申请人: FUJITSU LIMITED

    发明人: Ichiro Watanabe

    IPC分类号: G11B007/095

    CPC分类号: G11B7/0956 G11B11/10576

    摘要: In a focus control for following a focus position of light beam to be radiated to an optical disk to an optical disk surface, the technique is for shorten the memory length in the learning controller. The learning controller is provided to a focus feedback control system and updates the memory comprised of N numbers of memory cells with a shorter sample period than a time obtained by dividing the time required for one rotation of the disk by N numbers and outputs the learning results in the memory with the shorter sample period.

    摘要翻译: 在将光辐射到光盘的光束的聚焦位置跟随到光盘表面的聚焦控制中,该技术用于缩短学习控制器中的存储器长度。 将学习控制器提供给聚焦反馈控制系统,并且以比通过将盘的一次旋转所需的时间除以N数所获得的时间更短的采样周期来更新包含N个存储单元的存储器,并输出学习结果 在具有较短采样周期的存储器中。

    Head follow-up control method, head follow-up control device and storage device thereof
    2.
    发明申请
    Head follow-up control method, head follow-up control device and storage device thereof 失效
    头跟随控制方法,头跟随控制装置及其存储装置

    公开(公告)号:US20040196768A1

    公开(公告)日:2004-10-07

    申请号:US10756204

    申请日:2004-01-13

    申请人: FUJITSU LIMITED

    发明人: Ichiro Watanabe

    IPC分类号: G11B007/09 G11B007/095

    摘要: A follow-up control system follows up a head of a storage device to a storage medium. A sine wave signal learning section (82) which learns sine wave signals according to follow-up error signals which are input to a feedback control system (80), and performs time lead compensation corresponding to a delay of the feedback system (80), is provided. Since the time lead compensation is used for the sine wave signal learning model which can learn at high-speed, frequency disturbance of high frequency, for which phase lag must be considered, can be a compensation target, and the present invention contributes to the improvement of follow-up accuracy of the storage device.

    摘要翻译: 后续控制系统将存储设备的头部跟随到存储介质。 正弦波信号学习部(82)根据输入到反馈控制系统(80)的跟随误差信号来学习正弦波信号,并进行与反馈系统(80)的延迟对应的时间引导补偿, 被提供。 由于时间引线补偿用于可以在高速,高频频率干扰下学习的正弦波信号学习模型,必须考虑相位滞后,可以作为补偿目标,本发明有助于改进 的存储设备的后续准确性。

    Control apparatus and control method of optical signal exchanger
    3.
    发明申请
    Control apparatus and control method of optical signal exchanger 有权
    光信号交换机的控制装置及控制方法

    公开(公告)号:US20040037490A1

    公开(公告)日:2004-02-26

    申请号:US10643895

    申请日:2003-08-20

    申请人: Fujitsu Limited

    IPC分类号: G02B006/26 G02B006/42

    摘要: An object of the invention is to provide a control apparatus and a control method having a simple constitution, which can stably perform switching of optical path in an optical signal exchanger, while suppressing an influence on a control due to the mechanical resonance of tilt mirrors. To this end, the control apparatus of the optical signal exchanger is constituted such that in an optical signal exchanger of three-dimensional type using one set of MEMS mirror arrays, each having a plurality of tilt mirrors arranged on a plane, each tilt mirror having a reflecting surface an angle of which is controllable, when the angle of the MEMS mirror on the optical path is feedback controlled by detecting power of an optical signal output from a specific position, a resonance component removing section that removes a resonance frequency component included in a control signal is shared corresponding to a pair of driving electrodes arranged in a coaxial direction of the MEMS mirror. As a result, the influence on the feedback control by a resonance action of the MEMS mirror can be reduced, while suppressing an increase in circuit size.

    摘要翻译: 本发明的目的是提供一种具有简单结构的控制装置和控制方法,其可以在抑制由于倾斜镜的机械共振引起的控制的影响的同时,稳定地执行光信号交换器中的光路的切换。 为此,光信号交换器的控制装置被构成为使得在使用一组MEMS反射镜阵列的三维型光信号交换器中,每组具有布置在平面上的多个倾斜镜,每个倾斜镜具有 当通过检测从特定位置输出的光信号的功率来反馈控制光路上的MEMS反射镜的角度时,反射表面的角度是可控的;谐振分量去除部,其去除包含在其中的谐振频率分量 对应于沿着MEMS反射镜的同轴方向布置的一对驱动电极共享控制信号。 结果,能够抑制MEMS反射镜的共振动作对反馈控制的影响,同时抑制电路尺寸的增加。

    Information storage device
    5.
    发明申请
    Information storage device 失效
    信息存储设备

    公开(公告)号:US20040170090A1

    公开(公告)日:2004-09-02

    申请号:US10790452

    申请日:2004-02-27

    申请人: Fujitsu Limited

    IPC分类号: G11B007/085

    CPC分类号: G11B7/08529 G11B7/08517

    摘要: An information storage device having a uniaxial tracking mechanism as a pickup which can perform a stable track pull-in operation is provided. A deceleration pulse amplitude a supplied to a tracking actuator is determined from a linear function nullnullK(VnullV0) of a detected movement velocity of a beam in the vicinity of a target track. The deceleration pulse amplitude is divided into two, and is supplied to the tracking actuator on two different occasions.

    摘要翻译: 提供一种信息存储装置,其具有作为能够执行稳定轨迹拉入操作的拾取器的单轴跟踪机构。 根据检测到的目标轨道附近的光束的移动速度的线性函数á= K(V-V0)来确定提供给跟踪致动器的减速脉冲幅度α。 减速脉冲幅度被分为两个,并且在两种不同的场合被提供给跟踪致动器。