公开(公告)号：US08027227B2

公开(公告)日：2011-09-27

申请号：US12767691

申请日：2010-04-26

申请人： Nobuyuki Oida ,  Tsuyoshi Yamamoto

发明人： Nobuyuki Oida ,  Tsuyoshi Yamamoto

IPC分类号： G11B7/00

CPC分类号： G11B7/13927 ,  G11B7/0908 ,  G11B7/0945 ,  G11B7/1378

摘要： An optical-disc apparatus comprising: a laser-light source; an objective lens; an aberration-correction lens to be moved in an optical-axis direction according to a cover-layer thickness of an optical disc; a stepping motor; a driving unit to generate a driving pulse for the motor; a storage unit to store current-position information of the aberration-correction lens based on the number of the pulse; and a control unit to control the driving unit so that the aberration-correction lens is moved between a first position set in a mechanical-movable range of the aberration-correction lens and a second position set on the objective-lens side relative to the first position, the driving unit being controlled so that the aberration-correction lens is moved to the second position when stop of disc rotation occurs, and is moved to a start position between the first-and-second positions according to the thickness based on the information when the stop is cancelled.

摘要翻译： 一种光盘装置，包括：激光光源; 物镜; 根据光盘的覆盖层厚度沿光轴方向移动的像差校正透镜; 步进电机; 用于产生用于所述电动机的驱动脉冲的驱动单元; 存储单元，用于基于脉冲数来存储像差校正透镜的当前位置信息; 以及控制单元，用于控制驱动单元，使得像差校正透镜在像差校正透镜的机械可移动范围中设置的第一位置和设置在物镜侧的第二位置之间相对于第一 位置，驱动单元被控制，使得当盘旋转停止发生时像差校正透镜移动到第二位置，并且基于该信息根据厚度移动到第一和第二位置之间的开始位置 当停止被取消时。

公开(公告)号：US20100271916A1

公开(公告)日：2010-10-28

申请号：US12767691

申请日：2010-04-26

申请人： Nobuyuki Oida ,  Tsuyoshi Yamamoto

发明人： Nobuyuki Oida ,  Tsuyoshi Yamamoto

IPC分类号： G11B20/10

CPC分类号： G11B7/13927 ,  G11B7/0908 ,  G11B7/0945 ,  G11B7/1378

摘要： An optical-disc apparatus comprising: a laser-light source; an objective lens; an aberration-correction lens to be moved in an optical-axis direction according to a cover-layer thickness of an optical disc; a stepping motor; a driving unit to generate a driving pulse for the motor; a storage unit to store current-position information of the aberration-correction lens based on the number of the pulse; and a control unit to control the driving unit so that the aberration-correction lens is moved between a first position set in a mechanical-movable range of the aberration-correction lens and a second position set on the objective-lens side relative to the first position, the driving unit being controlled so that the aberration-correction lens is moved to the second position when stop of disc rotation occurs, and is moved to a start position between the first-and-second positions according to the thickness based on the information when the stop is cancelled.

摘要翻译： 一种光盘装置，包括：激光光源; 物镜; 根据光盘的覆盖层厚度沿光轴方向移动的像差校正透镜; 步进电机; 用于产生用于所述电动机的驱动脉冲的驱动单元; 存储单元，用于基于脉冲数来存储像差校正透镜的当前位置信息; 以及控制单元，用于控制驱动单元，使得像差校正透镜在像差校正透镜的机械可移动范围中设置的第一位置和设置在物镜侧的第二位置之间相对于第一 位置，驱动单元被控制，使得当盘旋转停止发生时像差校正透镜移动到第二位置，并且基于该信息根据厚度移动到第一和第二位置之间的开始位置 当停止被取消时。

公开(公告)号：US06429997B1

公开(公告)日：2002-08-06

申请号：US09282740

申请日：1999-03-31

申请人： Nobuyuki Oida

发明人： Nobuyuki Oida

IPC分类号： G11B5596

CPC分类号： G11B5/5521 ,  G11B5/59627

摘要： A disk device has a head for recording and reproducing data to and from a disk-shaped recording medium. A carriage for supporting the head is provided. A driver is included for moving the carriage in the direction of a radius of the disk-shaped recording medium. Also provided is a controller controlling the driver based on a speed profile selected from among a plurality of preset speed profiles. The speed profile is selected in response to values stored in a memory indicating a disturbance to the head.

摘要翻译： 磁盘装置具有用于向和从盘形记录介质再现数据的磁头。 提供用于支撑头部的支架。 包括用于沿着盘形记录介质的半径方向移动滑架的驱动器。 还提供了一种基于从多个预设速度曲线中选择的速度轮廓来控制驾驶员的控制器。 响应于存储在存储器中的指示对头部的干扰的值来选择速度曲线。

公开(公告)号：US06392847B1

公开(公告)日：2002-05-21

申请号：US09265450

申请日：1999-03-10

申请人： Hidetoshi Kabasawa ,  Nobuyuki Oida

发明人： Hidetoshi Kabasawa ,  Nobuyuki Oida

IPC分类号： G11B2102

CPC分类号： G11B5/5521 ,  G11B21/025

摘要： A disk apparatus has a head carriage and a head carriage drive mechanism. The head carriage drive mechanism has voice coil motors located on each side of the head carriage. The voice coil motors each have a drive coil, the two drive coils having different numbers of turns and being connected in parallel to a power source. The two voice coil motors generate identical propulsive forces despite having a different number of turns in the respective drive coils, making it possible to move the head carriage with precision. A head carriage position detecting mechanism is included in a space formed beneath the drive coil having the smaller number of turns, for added precision in positioning the head carriage.

摘要翻译： 盘装置具有头托架和头托架驱动机构。 头托架驱动机构具有位于头托架每侧的音圈马达。 音圈电动机各自具有驱动线圈，两个驱动线圈具有不同的匝数并与电源并联连接。 尽管在相应的驱动线圈中具有不同的匝数，两个音圈电动机产生相同的推进力，使得可以精确地移动头架。 头托架位置检测机构包括在具有较少匝数的驱动线圈下方形成的空间中，以增加头托架的定位精度。