Optical disc drive apparatus and servo control method for optical disc drive apparatus
    41.
    发明授权
    Optical disc drive apparatus and servo control method for optical disc drive apparatus 失效
    用于光盘驱动装置的光盘驱动装置和伺服控制方法

    公开(公告)号:US07729215B2

    公开(公告)日:2010-06-01

    申请号:US11880481

    申请日:2007-07-20

    申请人: Yuichi Suzuki

    发明人: Yuichi Suzuki

    IPC分类号: G11B7/00

    CPC分类号: G11B7/0956 G11B19/28

    摘要: An optical disc drive apparatus may include an optical pickup that moves along a transportation shaft provided along a radial direction of an optical disc and picks up reflected light after emitting an optical beam via an objective lens to the optical disc; a drive section that controls the objective lens to adjust an angle of the optical beam; an angular velocity detection section that detects an angular velocity around the transportation shaft; storage means for storing coefficients from which the skew of the optical disc around a virtual axis perpendicular to the transportation shaft is calculated using the angular velocity; a skew estimation section that calculates a skew estimate value by multiplying the coefficient by the angular velocity; and a drive signal generation section that generates a drive signal based on the skew estimate value to enable the drive section to adjust the angle of the optical beam.

    摘要翻译: 光盘驱动装置可以包括沿着沿着光盘的径向方向设置的传送轴移动的光学拾取器,并且在经由物镜将光束发射到光盘之后拾取反射光; 驱动部,其控制所述物镜来调整所述光束的角度; 角速度检测部,其检测所述输送轴周围的角速度; 存储装置,用于存储系数,使用角速度计算出围绕围绕运输轴垂直的假想轴的光盘的偏斜; 偏差估计部,其通过将系数乘以角速度来计算偏斜估计值; 以及驱动信号生成部,其基于所述偏斜估计值生成驱动信号,以使得所述驱动部能够调整所述光束的角度。

    Servo control apparatus, servo control method, optical disc apparatus and video camera recorder
    42.
    发明授权
    Servo control apparatus, servo control method, optical disc apparatus and video camera recorder 失效
    伺服控制装置,伺服控制方法,光盘装置和摄像机

    公开(公告)号:US07660211B2

    公开(公告)日:2010-02-09

    申请号:US11756945

    申请日:2007-06-01

    IPC分类号: G11B7/00

    摘要: A servo control apparatus includes: a drive section that applies a thrust to move a driven object; a storage section that stores a control circuit output initial value; an approaching control section that moves the driven object toward a target position; an error signal detection section that detects an error signal varying according to a difference between the position of the driven object and the target position; a start position calculation section that calculates a start position of a servo control process; an arrival detection section that detects whether the driven object reaches the start position; a control circuit initial value calculation section that calculates a control circuit initial value of a control system and supplies it to a control circuit of the control system; and a servo control starting section that starts the servo control process when detecting that the driven object has reached the start position.

    摘要翻译: 伺服控制装置包括:驱动部,其施加用于移动被驱动对象的推力; 存储控制电路输出初始值的存储部; 接近的控制部分,其将被驱动对象朝向目标位置移动; 误差信号检测部,其检测根据被驱动物体的位置与目标位置之间的差异而变化的误差信号; 开始位置计算部,其计算伺服控制处理的开始位置; 检测被驱动体是否到达起始位置的到达检测部; 控制电路初始值计算部,其计算控制系统的控制电路初始值,并将其提供给所述控制系统的控制电路; 以及伺服控制开始部,其在检测到被驱动体已到达起始位置时开始伺服控制处理。

    Clip and backlight assembly
    43.
    发明申请
    Clip and backlight assembly 失效
    夹子和背光组件

    公开(公告)号:US20100008066A1

    公开(公告)日:2010-01-14

    申请号:US12456193

    申请日:2009-06-12

    IPC分类号: G09F13/04 A44B21/00

    摘要: A clip provided by the present invention includes an insert portion that is inserted into an insertion hole formed in a flat-shaped chassis and that engages with the chassis, and a collar portion that is formed in a flat shape around the circumference of the insert portion. When the insert portion is inserted into the insertion hole, the collar portion and the chassis clamp at least one light emitting board that is positioned in contact with the chassis, and the thickness of the collar portion is set to be equal to or less than an amount of protrusion of a light emitting portion formed protrudingly from the light emitting board.

    摘要翻译: 由本发明提供的夹子包括插入到形成在平板状底盘中的插入孔中并与底座接合的插入部分,以及围绕插入部分的圆周形成为扁平形状的套环部分 。 当插入部分插入到插入孔中时,套环部分和底架夹紧至少一个与底架接触的发光板,并且套环部分的厚度设定为等于或小于 从发光板突出地形成的发光部的突出量。

    Die Cushion Controller of Press Machine
    44.
    发明申请
    Die Cushion Controller of Press Machine 有权
    冲压机座垫控制器

    公开(公告)号:US20090007617A1

    公开(公告)日:2009-01-08

    申请号:US12224639

    申请日:2007-02-26

    申请人: Yuichi Suzuki

    发明人: Yuichi Suzuki

    IPC分类号: B21C51/00

    CPC分类号: B21D24/10

    摘要: A die-cushion controlling device includes: a position-command-signal outputting section for outputting a position command signal of a die-cushion pad; a position detecting means for detecting a position of the die-cushion pad; a position comparing section for outputting a position deviation signal corresponding to a deviation between the target position value based on the position command signal and a position detection value based on a position detection signal; a position controlling section for outputting a position-speed command signal based on the position deviation signal; a speed controlling section for outputting a motor-current command signal based on the position-speed command signal from the position controlling section; a servo amplifier for generating a current corresponding to the motor-current command signal; and an escape-position-command-signal outputting section for outputting a position command signal for commanding the die-cushion pad to escape from a bottom dead center position based on a press signal outputted when a slide has reached a bottom dead center.

    摘要翻译: 模具缓冲控制装置包括:位置指令信号输出部,输出模具缓冲垫的位置指令信号; 位置检测装置,用于检测模具垫的位置; 位置比较部分,用于基于位置指令信号输出与目标位置值之间的偏差相对应的位置偏差信号和基于位置检测信号的位置检测值; 位置控制部分,用于基于位置偏差信号输出位置速度命令信号; 速度控制部分,用于基于来自位置控制部分的位置速度指令信号输出电动机电流指令信号; 用于产生对应于电动机电流指令信号的电流的伺服放大器; 逃逸位置指令信号输出部,其基于当滑块到达下死点时输出的按压信号,输出用于命令模具缓冲垫从下死点位置脱离的位置指令信号。

    Optical amplifier using reflection-type variable optical attenuator for feedback
    49.
    发明授权
    Optical amplifier using reflection-type variable optical attenuator for feedback 有权
    光放大器采用反射型可变光衰减器进行反馈

    公开(公告)号:US07209284B2

    公开(公告)日:2007-04-24

    申请号:US11185874

    申请日:2005-07-21

    摘要: An optical apparatus which is reduced in the number of optical devices arranged on a main optical signal transmission path, thereby reducing the size and cost of the device, and which is improved in optical transmission quality. An optical amplifier includes an amplification medium, which is doped with an active material for optical amplification and to which pump light is introduced, for amplifying an optical signal to be output. A reflection-type variable optical attenuator includes a reflecting mirror for reflecting an input light to generate a reflected light, and a magneto-optical crystal arranged in a position where the input and reflected lights pass. The magneto-optical crystal is applied with a magnetic field to induce a Faraday rotation angle therein and thereby vary an attenuation amount of the amplified optical signal, and part of light transmitted through the reflecting mirror is converted, as input monitor light, into an electrical signal.

    摘要翻译: 减少了布置在主光信号传输路径上的光学装置的数量的光学装置,从而减小了装置的尺寸和成本,并提高了光传输质量。 光放大器包括一个放大介质,其被掺入用于光放大的有源材料并被引入泵浦光,用于放大要输出的光信号。 反射型可变光衰减器包括用于反射输入光以产生反射光的反射镜和布置在输入和反射光通过的位置的磁光晶体。 磁光晶体被施加有磁场以在其中诱发法拉第旋转角度,从而改变放大的光信号的衰减量,并且透射通过反射镜的光的一部分作为输入监视光转换成电 信号。

    Disk drive apparatus and seek method

    公开(公告)号:US20060077805A1

    公开(公告)日:2006-04-13

    申请号:US11220681

    申请日:2005-09-08

    申请人: Yuichi Suzuki

    发明人: Yuichi Suzuki

    IPC分类号: G11B7/00

    CPC分类号: G11B7/00736 G11B7/08517

    摘要: The determination on the reach to a BCA by using a pull-in signal in a seek for the BCA may eliminate the necessity of a position sensor for determination of the reach to a BCA, for example, which can realize a seek independent of a count of the number of steps by a stepping motor, for example. Thus, the construction can be simplified, and the costs can be reduced. Furthermore, the required accuracy of disk chucking and mechanical accuracy of the mechanisms may be alleviated, which can provide simplicity in design and manufacture. The pickup unit can be allowed to perform the secure reading of information in a BCA by, after the transporting unit is stopped based on the determination on the reach to the BCA, monitoring the determination results (determination signals) based on a pull-in signal, for example, with the objective lens at different positions and controlling the position of the objective lens to an optimum position.