公开(公告)号：US5699330A

公开(公告)日：1997-12-16

申请号：US321616

申请日：1994-10-12

申请人： Tsukasa Ogino ,  Hisatoshi Baba ,  Hirotake Ando ,  Yoshihiro Saga

发明人： Tsukasa Ogino ,  Hisatoshi Baba ,  Hirotake Ando ,  Yoshihiro Saga

IPC分类号： G11B7/09 ,  G11B11/10 ,  G11B11/105 ,  G11B19/00 ,  G11B17/22

CPC分类号： G11B7/09 ,  G11B11/10576 ,  G11B11/10595 ,  G11B19/00

摘要： Input/output processing of information is controlled in a magnetooptical disc apparatus for recording and/or reproducing the information on a magnetooptical recording medium by irradiating a desired track of the recording medium with a light beam via an optical system. The servo control of the light beam such as tracking servo control, focusing servo control or the like is performed by causing interruption in the input/output processing control. When the apparatus activates, a parameter in the servo control is set on the basis of a reproduction signal amplitude of the information with a change in state of the servo control and a parameter in signal processing of the information is set in accordance with a reproduction signal amplitude of the information corresponding to the set parameter for the servo control.

摘要翻译： 信息的输入/输出处理被控制在磁光盘装置中，用于通过经由光学系统用光束照射记录介质的期望轨迹来在磁光记录介质上记录和/或再现信息。 通过引起输入/输出处理控制的中断来执行光束的伺服控制，例如跟踪伺服控制，聚焦伺服控制等。 当设备激活时，基于伺服控制状态改变的信息的再现信号振幅来设置伺服控制中的参数，并且根据再现信号设置信息的信号处理中的参数 对应于伺服控制的设定参数的信息的幅度。

公开(公告)号：US5532990A

公开(公告)日：1996-07-02

申请号：US447645

申请日：1995-05-23

申请人： Osamu Koyama ,  Tadashi Kato ,  Masayuki Usui ,  Yoshihiko Watanabe ,  Hisatoshi Baba ,  Hirotake Ando ,  Hideo Nakajima ,  Shinji Sakai ,  Kenji Tamaki

发明人： Osamu Koyama ,  Tadashi Kato ,  Masayuki Usui ,  Yoshihiko Watanabe ,  Hisatoshi Baba ,  Hirotake Ando ,  Hideo Nakajima ,  Shinji Sakai ,  Kenji Tamaki

IPC分类号： G11B7/085 ,  G11B7/09 ,  G11B7/125 ,  G11B7/13

CPC分类号： G11B7/094 ,  G11B7/0941 ,  G11B7/126 ,  G11B7/13

摘要： An optical information processing apparatus and method of correcting an offset of a tracking error signal. The apparatus includes an optical head for irradiating a light beam onto an optical recording medium, an objective lens, mounted on the optical head, for condensing the light beam onto the recording medium, a photodetector for receiving a light beam reflected by or transmitted through the recording medium and for generating a tracking error signal indicative of a positional deviation between the light beam irradiated position and a track, a tracking actuator for moving the objective lens in a direction intersecting the tracks and for causing the objective lens to vibrate in the vicinity of the center of the light beam, a tracking controller for driving the tracking actuator in accordance with the tracking error signal so as to correct the positional deviation, a measuring device for measuring an offset of the tracking error signal from an output of the photodetector when the objective lens is caused to vibrate in the vicinity of the center of the light beam and a correction device for correcting the offset of the tracking error signal on the basis of the offset measured by the measuring device.

摘要翻译： 一种光学信息处理装置和纠正跟踪误差信号偏移的方法。 该装置包括用于将光束照射到光学记录介质上的光学头，安装在光学头上的物镜，用于将光束聚光到记录介质上;光电检测器，用于接收由光束反射或透过的光束 并且用于产生指示光束照射位置和轨道之间的位置偏差的跟踪误差信号，跟踪致动器，用于在与轨道相交的方向上移动物镜，并使物镜在 光束的中心，跟踪控制器，用于根据跟踪误差信号驱动跟踪致动器以校正位置偏差;测量装置，用于测量跟踪误差信号与光电检测器的输出的偏移量 使物镜在光束的中心附近振动，并具有校正装置 基于由测量装置测量的偏移来校正跟踪误差信号的偏移。

公开(公告)号：US5404346A

公开(公告)日：1995-04-04

申请号：US154120

申请日：1993-11-18

申请人： Osamu Koyama ,  Tadashi Kato ,  Masayuki Usui ,  Yoshihiko Watanabe ,  Hisatoshi Baba ,  Hirotake Ando ,  Hideo Nakajima ,  Shinji Sakai ,  Kenji Tamaki

发明人： Osamu Koyama ,  Tadashi Kato ,  Masayuki Usui ,  Yoshihiko Watanabe ,  Hisatoshi Baba ,  Hirotake Ando ,  Hideo Nakajima ,  Shinji Sakai ,  Kenji Tamaki

IPC分类号： G11B7/085 ,  G11B7/09 ,  G11B7/125 ,  G11B7/13 ,  G11B7/095

CPC分类号： G11B7/094 ,  G11B7/0941 ,  G11B7/126 ,  G11B7/13

摘要： An optical information processing apparatus includes a unit for scanning a track formed on an optical recording medium with a light beam, a tracking control unit for correcting a position shift between a radiation position of the light beam on the medium and the track, and an offset correction unit for automatically correcting an offset of the tracking control unit.

摘要翻译： 一种光学信息处理设备包括：用于用光束扫描形成在光学记录介质上的轨道的单元;跟踪控制单元，用于校正介质上的光束的辐射位置和轨道之间的位置偏移;以及偏移 校正单元，用于自动校正跟踪控制单元的偏移。

公开(公告)号：US5347503A

公开(公告)日：1994-09-13

申请号：US154385

申请日：1993-11-18

申请人： Osamu Koyama ,  Tadashi Kato ,  Masayuki Usui ,  Yoshihiko Watanabe ,  Hisatoshi Baba ,  Hirotake Ando ,  Hideo Nakajima ,  Shinji Sakai ,  Kenji Tamaki

发明人： Osamu Koyama ,  Tadashi Kato ,  Masayuki Usui ,  Yoshihiko Watanabe ,  Hisatoshi Baba ,  Hirotake Ando ,  Hideo Nakajima ,  Shinji Sakai ,  Kenji Tamaki

IPC分类号： G11B7/085 ,  G11B7/09 ,  G11B7/125 ,  G11B7/13 ,  G11B7/00

CPC分类号： G11B7/094 ,  G11B7/0941 ,  G11B7/126 ,  G11B7/13

摘要： An optical information processing apparatus includes a light source for radiating a light beam onto an optical information recording medium. A first photosensor is provided for partially receiving the light beam emitted from the light source and generating an output, and a second photosensor is provided for receiving either a light beam reflected by the recording medium or a light beam transmitted through the recording medium and generating an output. A control circuit controls power of the light beam emitted from the light source using the output from the first photosensor, and a correction circuit automatically corrects linearity of the output of the first photosensor with respect to the power of the light beam emitted from the light source in accordance with the output from the second photosensor.

摘要翻译： 光学信息处理设备包括用于将光束照射到光学信息记录介质上的光源。 提供第一光传感器以部分地接收从光源发射的光束并产生输出，并且提供第二光电传感器用于接收由记录介质反射的光束或通过记录介质传输的光束，并产生 输出。 控制电路使用第一光传感器的输出来控制从光源发射的光束的功率，并且校正电路自动校正第一光传感器的输出相对于从光源发射的光束的功率的线性 根据第二光电传感器的输出。

公开(公告)号：US5517475A

公开(公告)日：1996-05-14

申请号：US374222

申请日：1995-01-18

申请人： Osamu Koyama ,  Tadashi Kato ,  Masayuki Usui ,  Yoshihiko Watanabe ,  Hisatoshi Baba ,  Hirotake Ando ,  Hideo Nakajima ,  Shinji Sakai ,  Kenji Tamaki

发明人： Osamu Koyama ,  Tadashi Kato ,  Masayuki Usui ,  Yoshihiko Watanabe ,  Hisatoshi Baba ,  Hirotake Ando ,  Hideo Nakajima ,  Shinji Sakai ,  Kenji Tamaki

IPC分类号： G11B7/085 ,  G11B7/09 ,  G11B7/125 ,  G11B7/13

CPC分类号： G11B7/094 ,  G11B7/0941 ,  G11B7/126 ,  G11B7/13

摘要： An optical information processing apparatus includes an optical head for irradiating a light beam onto an optical recording medium, an objective lens, mounted on the optical head, for condensing the light beam onto the recording medium, a photodetector for receiving a light beam from the recording medium and for generating a tracking error signal indicative of a positional deviation between a light beam irradiated position and a track, a tracking actuator for moving the objective lens in a direction intersecting tracks of the recording medium, a tracking controller for driving the tracking actuator in accordance with the tracking error signal so as to correct the positional deviation, a position detector for detecting a relative position of the objective lens with respect to the optical head in the direction intersecting the tracks, a measuring device for measuring a relationship between an offset of the tracking error signal and a position of the objective lens from the tracking error signal and an output of the position detector, a memory for storing the relationship measured by the measuring device and a correction device for correcting the offset of the tracking error signal in accordance with the stored relationship, in response to the position detector output signal.

摘要翻译： 一种光学信息处理设备包括：用于将光束照射到光学记录介质上的光学头，安装在光学头上的物镜，用于将光束聚光到记录介质上;光电检测器，用于接收来自记录的光束 并且用于产生指示光束照射位置和轨道之间的位置偏差的跟踪误差信号，用于在与记录介质的轨道相交的方向上移动物镜的跟踪致动器，用于驱动跟踪致动器的跟踪控制器 根据所述跟踪误差信号来校正所述位置偏差;位置检测器，用于检测所述物镜相对于所述光头相对于所述轨道的方向的相对位置;测量装置，用于测量所述物镜的偏移量 跟踪误差信号和物镜的位置跟踪误差 信号和位置检测器的输出，用于存储由测量装置测量的关系的存储器和用于响应于位置检测器输出信号根据所存储的关系校正跟踪误差信号的偏移的校正装置。

公开(公告)号：US07775433B2

公开(公告)日：2010-08-17

申请号：US12048675

申请日：2008-03-14

申请人： Hirotake Ando

发明人： Hirotake Ando

IPC分类号： G06K7/10 ,  G06K7/14 ,  G02B26/00

CPC分类号： G02B26/105 ,  G02B7/1821 ,  G02B26/085

摘要： An optical deflection apparatus including a light source; an optical deflector including first and second oscillators and first and second torsion springs, the first torsion spring connecting the first and second oscillators, the second torsion spring being connected to the second oscillator, and the first and second torsion springs sharing a common torsion axis; and a driver that applies a driving force to the optical deflector; and a driving controller that supplies a driving signal to the driver. The driving controller sets a reference frequency on the basis of a resonant frequency of the optical deflector, calculates a target time at which one of the first and second oscillators makes a predetermined deflection angle on the basis of the reference frequency, and supplies such a driving signal that the one of the first and second oscillators passes through a point corresponding to the predetermined deflection angle at the target time.

摘要翻译： 一种光学偏转装置，包括光源; 包括第一和第二振荡器以及第一和第二扭转弹簧的光学偏转器，连接第一和第二振荡器的第一扭转弹簧，连接到第二振荡器的第二扭转弹簧，以及共享共同的扭转轴的第一和第二扭转弹簧; 以及向光学偏转器施加驱动力的驱动器; 以及向驾驶员提供驱动信号的驱动控制器。 驱动控制器基于光偏转器的共振频率设定参考频率，基于参考频率计算第一和第二振荡器中的一个基于参考频率产生预定偏转角的目标时间，并且提供这样的驱动 指示第一和第二振荡器中的一个通过在目标时间对应于预定偏转角的点。

公开(公告)号：US5732052A

公开(公告)日：1998-03-24

申请号：US539266

申请日：1995-10-04

申请人： Hirotake Ando

发明人： Hirotake Ando

IPC分类号： G11B7/085 ,  G11B7/09

CPC分类号： G11B7/08517 ,  G11B7/0941 ,  G11B7/0908

摘要： An optical information recording and/or reproducing apparatus is arranged to record and/or reproduce information on or from a recording medium with a light beam. The apparatus includes a circuit for generating a focusing error signal of the light beam, a filter for filtering the focusing error signal, the attenuation factor of the filter being greater at a high frequency region, a circuit for selecting either a focusing error signal filtered by the filter or a focusing error signal not filtered by the filter in accordance with an operating mode of the apparatus, and a circuit for executing focusing control of the light beam, using the selected focusing error signal.

摘要翻译： 光信息记录和/或再现装置被布置为在具有光束的记录介质上记录和/或再现信息。 该装置包括用于产生光束的聚焦误差信号的电路，用于滤波聚焦误差信号的滤波器，在高频​​区域处的滤波器的衰减系数更大的电路，用于选择由 所述滤波器或聚焦误差信号根据所述装置的操作模式被所述滤波器滤波，以及用于使用所选择的聚焦误差信号执行所述光束的聚焦控制的电路。

公开(公告)号：US07304919B2

公开(公告)日：2007-12-04

申请号：US10608108

申请日：2003-06-30

申请人： Hirotake Ando

发明人： Hirotake Ando

IPC分类号： G11B7/00

CPC分类号： G11B7/0941 ,  G11B7/0079

摘要： In a CLV(constant linear velocity) or MCLV(substantially constant linear velocity)-type optical disk apparatus, instability of servo at inner and outer circumferences of an optical disk is prevented by adjusting a servo-loop gain of tracking servo control or focus servo control in accordance with the radial-direction position of an optical spot, i.e., in accordance with the rotation frequency of the optical disk.

摘要翻译： 在CLV（恒定线速度）或MCLV（基本上恒定的线速度）型光盘装置中，通过调整跟踪伺服控制或聚焦伺服的伺服环增益来防止光盘内外周的伺服不稳定 根据光点的径向位置，即根据光盘的旋转频率进行控制。

公开(公告)号：US6049516A

公开(公告)日：2000-04-11

申请号：US39264

申请日：1998-03-16

申请人： Yutaka Ogasawara ,  Hirotake Ando ,  Akira Miyashita ,  Nobuyuki Tonegawa

发明人： Yutaka Ogasawara ,  Hirotake Ando ,  Akira Miyashita ,  Nobuyuki Tonegawa

IPC分类号： G11B7/085 ,  G11B7/09 ,  G11B7/095 ,  G11B7/125 ,  G11B11/105 ,  G11B19/00 ,  G11B19/02 ,  G11B19/28 ,  G11B7/00

CPC分类号： G11B7/126 ,  G11B11/10595 ,  G11B19/00 ,  G11B19/02 ,  G11B19/28 ,  G11B7/09 ,  G11B11/10576 ,  G11B7/08505 ,  G11B7/0946 ,  G11B7/0948 ,  G11B7/0953

摘要： An information recording and/or reproducing method and apparatus for effecting recording of data onto and/or reproducing of data from a recording medium by irradiating a desired track on the recording medium with a light beam emitted from a light source through an optical system. In the apparatus, a single processor executes an input/output control of the data for the apparatus and a power control of the light beam by interrupting the input/output control at every predetermined period. The processor inhibits the interrupt power control of the light beam in accordance with a predetermined situation.

摘要翻译： 一种信息记录和/或再现方法和装置，用于通过通过光学系统从光源发射的光束照射记录介质上的期望轨迹，从而从记录介质进行数据记录和/或再现。 在该装置中，单个处理器通过在每个预定周期中断输入/输出控制来执行装置的数据的输入/输出控制和光束的功率控制。 处理器根据预定的情况禁止光束的中断功率控制。

公开(公告)号：US5140573A

公开(公告)日：1992-08-18

申请号：US404564

申请日：1989-09-08

申请人： Hirotake Ando

发明人： Hirotake Ando

IPC分类号： G11B7/085 ,  G11B7/09

CPC分类号： G11B7/08505 ,  G11B7/0901

摘要： An optical information recording and/or reproducing apparatus includes an optical head for recording and/or reproducing information by applying a light beam to an optical recording medium having a plurality of tracks, an actuator for relatively moving the light beam in a direction which intersects the tracks, an optical detector for detecting, by intersecting the tracks, a reflected or transmitted light of the light beam, which has been modulated, a peak holding circuit for holding a peak value of a signal detected by the optical detector, a bottom holding circuit for holding a bottom value of the detected signal, a circuit for obtaining an intermediate value of the held peak value and bottom value, and a comparison circuit for transmitting an on-track/off-track signal by making a comparison between the intermediate value and the detected signal.

摘要翻译： 一种光学信息记录和/或再现装置，包括用于通过将光束施加到具有多个轨道的光学记录介质来记录和/或再现信息的光学头，用于使光束沿与 轨道，光检测器，用于通过相交轨迹来检测经过调制的光束的反射或透射光，用于保持由光检测器检测的信号的峰值的峰值保持电路，底部保持电路 用于保持检测信号的底值，用于获得所保持的峰值和底值的中间值的电路，以及用于通过比较中间值和 检测信号。