公开(公告)号：US5430375A

公开(公告)日：1995-07-04

申请号：US279862

申请日：1994-07-26

申请人： Norikatsu Inoue ,  Kazutaka Noborimoto ,  Kunio Nakazato ,  Toshiyuki Kase

发明人： Norikatsu Inoue ,  Kazutaka Noborimoto ,  Kunio Nakazato ,  Toshiyuki Kase

IPC分类号： G02B7/08 ,  G01B7/00 ,  G01D5/14 ,  G01D5/16 ,  G01P3/52 ,  G01R33/09 ,  H01L43/08 ,  G01P3/42

CPC分类号： G01B7/003 ,  G01D5/145 ,  G01P3/52 ,  G01R33/09 ,  G02B7/102

摘要： A position detecting apparatus comprising a magnet secured to a movable body (lens holder) which is movable along a shaft body when the shaft body is inserted, the magnet having polarity which is alternately magnetized at a predetermined interval, and a magneto-resistance effect element which is positioned and fixed so as to be confronted to the magnet at a predetermined gap interval by an MR holder with the shaft body being used as a securing position reference, and the magneto-resistance effect element serving to obtain a position detection signal for the movable body through variation of a resistance value thereof which is caused by magnetic field of the magnet through movement of the movable body.

摘要翻译： 一种位置检测装置，包括固定到可移动体（透镜保持器）的磁体，所述可移动体（透镜保持器）在轴体插入时可沿轴体移动，具有以预定间隔交替磁化的极性的磁体和磁阻效应元件 其被定位和固定，以便以轴体用作固定位置基准的MR保持器以预定的间隔间隔面对磁体，并且用于获得位置检测信号的磁阻效应元件 可移动体通过其通过可移动体的移动由磁体的磁场引起的电阻值的变化而产生。

公开(公告)号：US5373437A

公开(公告)日：1994-12-13

申请号：US740726

申请日：1991-08-06

申请人： Tsuyoshi Itoh ,  Isao Okuda ,  Hiroshi Nishikawa ,  Toshiyuki Kase ,  Ryota Ogawa ,  Masahiro Oono ,  Koichi Maruyama ,  Makoto Iki

发明人： Tsuyoshi Itoh ,  Isao Okuda ,  Hiroshi Nishikawa ,  Toshiyuki Kase ,  Ryota Ogawa ,  Masahiro Oono ,  Koichi Maruyama ,  Makoto Iki

IPC分类号： G02B7/28 ,  G11B7/09 ,  G11B7/095 ,  G11B7/00

CPC分类号： G11B7/0909

摘要： A device in which an offset is added to a focusing error signal to control an objective lens and thereby reduce the generation of cross-talk when a beam spot that is converged on an optical disk crosses over a wall of a groove of a track of the disk. By adding the offset to the focusing error signal, the objective lens is moved out of focus with the disk. Thus, the shape of a beam spot formed on a photo sensor is changed from a circle to an ellipse. A condenser lens provided for forming the beam spot is moved along the optical axis thereof in such a manner that an output of a recorded signal of the disk is at a maximum value. As a result, the objective lens is brought into focus on the disk. Thereafter, the objective lens is focused on the disk in accordance with the focusing error signal to which the offset is added, while maintaining the beam spot in the shape of an ellipse.

摘要翻译： 一种装置，其中偏移量被加到聚焦误差信号上以控制物镜，从而当会聚在光盘上的束斑横跨在光盘的轨道的凹槽的壁上时减少串扰的产生 磁盘。 通过将偏移量加到聚焦误差信号上，物镜与光盘移出对焦。 因此，形成在光传感器上的光斑的形状从圆形变为椭圆形。 设置用于形成束斑的聚光透镜沿其光轴移动，使得盘的记录信号的输出处于最大值。 结果，将物镜聚焦在盘上。 此后，根据添加有偏移量的聚焦误差信号将物镜聚焦在光盘上，同时将光束点保持为椭圆形状。

公开(公告)号：US5337300A

公开(公告)日：1994-08-09

申请号：US818534

申请日：1992-01-09

申请人： Suguru Takishima ,  Toshiyuki Kase

发明人： Suguru Takishima ,  Toshiyuki Kase

IPC分类号： G11B7/005 ,  G11B7/09 ,  G11B7/135 ,  G11B11/10 ,  G11B11/105 ,  G11B7/00

CPC分类号： G11B7/1356 ,  G11B11/10515 ,  G11B11/10543 ,  G11B7/005

摘要： A signal sensing device is provided that includes an optical system having a first splitting function by which a beam reflected by a magneto-optic disk is split by a small amount, a second splitting function by which the beam is split into a P-polarized-component and an S-polarized-component, and a third splitting function by which the beam is split into a first optical path and a second optical path. The second splitting function is carried out by an optical element carrying out one of the first and third splitting functions. A first photo sensor is provided with a beam receiving area divided into four parts, and an undivided beam receiving area, and a second photo sensor is provided with a beam receiving area divided into two parts and an undivided beam receiving area. The beam receiving divided area of the first photo sensor receives the P-polarized-component and senses a focusing error signal, and the beam receiving divided area of the second photo sensor receives the S-polarized-component and senses a tracking error signal. The beam receiving undivided areas of the first and second photo sensors are provided for sensing an information record signal.

摘要翻译： 提供了一种信号感测装置，其包括具有第一分离功能的光学系统，由磁光盘反射的光束通过该光学系统分割少量，第二分割功能，通过该第二分割功能将光束分裂成P偏振光， 分量和S偏振分量，以及第三分割功能，通过该功能将光束分成第一光路和第二光路。 第二分割功能由执行第一和第三分割功能之一的光学元件执行。 第一光传感器设置有分为四部分的光束接收区域和不分光束接收区域，第二光传感器设置有被分成两部分的光束接收区域和不分光束接收区域。 第一光传感器的光束接收分割区域接收P偏振分量并感测聚焦误差信号，并且第二光传感器的光束接收分割区域接收S偏振分量并感测跟踪误差信号。 接收第一和第二光传感器的未分割区域的光束用于感测信息记录信号。

公开(公告)号：US06529465B2

公开(公告)日：2003-03-04

申请号：US09795458

申请日：2001-03-01

申请人： Toshiyuki Kase ,  Hiroshi Nishikawa ,  Wataru Kubo ,  Ryoichi Nakanishi ,  Amit Jain

发明人： Toshiyuki Kase ,  Hiroshi Nishikawa ,  Wataru Kubo ,  Ryoichi Nakanishi ,  Amit Jain

IPC分类号： G11B700

CPC分类号： G11B7/122 ,  G11B7/08564 ,  G11B7/08576 ,  G11B7/1378 ,  G11B11/10543 ,  G11B11/10554 ,  G11B11/10567 ,  G11B11/1058

摘要： Disclosed is an optical system for an optical disk drive for reading/writing data from/in an optical disk. The optical system includes a light source emitting a parallel laser beam, a deflector having a rotatable mirror surface. The parallel laser beam emitted by the light source is incident on the mirror surface of the deflector and is deflected towards an objective lens system which faces the optical disk. A relay lens system is provided between the deflector and the objective lens system such that the mirror surface and a front principal plane of the objective lens system have a substantially conjugate relationship.

摘要翻译： 公开了一种用于从光盘读取/写入数据的光盘驱动器的光学系统。 光学系统包括发射平行激光束的光源，具有可旋转镜面的偏转器。 由光源发射的平行激光束入射在偏转器的镜面上，朝向面向光盘的物镜系统偏转。 在偏转器和物镜系统之间提供中继透镜系统，使得物镜系统的镜面和前主平面具有基本上共轭的关系。

公开(公告)号：US6018393A

公开(公告)日：2000-01-25

申请号：US899721

申请日：1997-07-24

申请人： Suguru Takishima ,  Toshiyuki Kase

发明人： Suguru Takishima ,  Toshiyuki Kase

IPC分类号： G01M11/02 ,  G01B9/02

CPC分类号： G01M11/0271

摘要： An lens evaluating system for evaluating a dual-focus lens is disclosed. The lens evaluating system is provided with an interferometer to form an image of interference fringes and a masking system which masks a part of the image corresponding to a noise component.

摘要翻译： 公开了一种用于评估双焦点透镜的透镜评估系统。 透镜评估系统设置有干涉仪以形成干涉条纹的图像，以及遮蔽对应于噪声分量的图像的一部分的掩蔽系统。

公开(公告)号：US5751491A

公开(公告)日：1998-05-12

申请号：US677277

申请日：1996-07-09

申请人： Toshiyuki Kase ,  Hiroshi Nishikawa

发明人： Toshiyuki Kase ,  Hiroshi Nishikawa

IPC分类号： G11B7/08 ,  G02B27/62 ,  G11B7/09 ,  G11B7/22 ,  G11B11/105 ,  G02B27/10 ,  G02B7/02

CPC分类号： G02B27/62 ,  G11B7/22 ,  G11B11/10543

摘要： A light beam emitted from a laser diode passes through a polarization beam splitter, a movable mirror, a reference prism supported in a pair of rails, a sliding mirror and is incident on a cat's-eye optical system. The light beam reflected in the cat's-eye optical system returns to the polarization beam splitter along an optical path of the incident light beam, is separated by a polarizing separating plane and is directed to a television camera. The front surface of the reference prism is perpendicular to the rails. Thus, the light beam reflected at the front surface of the reference prism is directed to the television camera along an optical path which is inclined relative to the optical path of the incident light beam in accordance with the direction of the rails. Consequently, if the inclination of the movable mirror is adjusted such that the light spots of both of the reflected beams displayed on the monitor coincide, the optical path of the incident light beam is parallel to the rails.

摘要翻译： 从激光二极管发射的光束通过偏振分束器，可移动反射镜，支撑在一对轨道中的参考棱镜，滑动反射镜并入射到猫眼光学系统。 反射在猫眼光学系统中的光束沿着入射光束的光路返回到偏振分束器，被偏振分离平面分离并被引导到电视摄像机。 参考棱镜的前表面垂直于导轨。 因此，在参考棱镜的前表面处反射的光束沿着相对于入射光束的光路相对于轨道的方向倾斜的光路被引导到电视摄像机。 因此，如果调整可动镜的倾斜度，使得显示在监视器上的两个反射光束的光点重合，则入射光束的光路平行于轨道。

公开(公告)号：US5663939A

公开(公告)日：1997-09-02

申请号：US453263

申请日：1995-05-30

申请人： Toshiyuki Kase

发明人： Toshiyuki Kase

IPC分类号： G11B7/135 ,  G11B7/0037 ,  G11B7/005 ,  G11B7/125 ,  G11B7/095

CPC分类号： G11B7/1398 ,  G11B7/1356 ,  G11B7/0037 ,  G11B7/005

摘要： An optical data recording and reproducing apparatus in which a beam spot is made incident upon recording tracks of an optical recording medium, so that the beam reflected from the optical recording medium is detected to obtain a data signal and a tracking error signal. The optical recording medium is a rotatable optical disc having a signal recording surface. The recording tracks include concentrically arranged recording track sectors formed on the signal recording surface of the optical disc and preformat portions provided between the adjacent recording track sectors. A beam shape setting device is provided to shape an image of the beam spot formed on the track sectors into a non-circular shape which is elongated in the circumferential direction of the optical disc.

摘要翻译： 一种光学数据记录和再现装置，其中光斑被入射在光记录介质的记录轨道上，使得从光记录介质反射的光束被检测以获得数据信号和跟踪误差信号。 光记录介质是具有信号记录表面的可旋转光盘。 记录轨道包括形成在光盘的信号记录表面上的同心布置的记录轨道扇区和设置在相邻记录轨道扇区之间的预格式化部分。 提供了一种光束形状设定装置，用于将形成在轨道扇区上的束斑的图像成形为在光盘的圆周方向上延伸的非圆形形状。

公开(公告)号：US5157459A

公开(公告)日：1992-10-20

申请号：US574071

申请日：1990-08-29

申请人： Masahiro Oono ,  Tsuyoshi Itoh ,  Katsuki Hayashi ,  Toshiyuki Kase ,  Masahiko Sasaki ,  Hiroshi Yamamoto ,  Isao Okuda

发明人： Masahiro Oono ,  Tsuyoshi Itoh ,  Katsuki Hayashi ,  Toshiyuki Kase ,  Masahiko Sasaki ,  Hiroshi Yamamoto ,  Isao Okuda

IPC分类号： G01J9/02 ,  G11B7/09 ,  G11B7/22 ,  G11B11/105

CPC分类号： G11B7/22 ,  G01J9/0215 ,  G11B11/10532 ,  G11B11/10576 ,  G11B7/09

摘要： An apparatus for measuring a wave front aberration including a light beam splitter for dividing a parallel laser light beam incident from a measuring object into two beam fluxes, an image rotator disposed in at least one optical path of the divided beam fluxes for rotating the wave from on the optical axis, an interference device for interfering, after superposing the beam fluxes, whose wave fronts are rotated relatively, an imaging lens for forming the interfered beam into an image, and an observation device for observing the imaged interference fringes.

摘要翻译： 一种用于测量波前像差的装置，包括用于将从测量对象入射的平行激光束分成两束光束的光束分离器，设置在用于将波从该光束旋转的分束光束的至少一个光路中的图像旋转器 在光轴上设置干涉装置，用于在波前相对旋转的波束叠加之后，将用于将被干扰的波束形成图像的成像透镜和用于观察成像的干涉条纹的观察装置进行干涉。

公开(公告)号：US06879552B2

公开(公告)日：2005-04-12

申请号：US09985783

申请日：2001-11-06

申请人： Toshiyuki Kase

发明人： Toshiyuki Kase

IPC分类号： G06F3/06 ,  G11B7/0045 ,  G11B19/04 ,  G11B19/26 ,  G11B20/10 ,  G11B27/34 ,  G11B27/36 ,  G11B7/00

CPC分类号： G11B20/10527 ,  G11B7/0045 ,  G11B19/04 ,  G11B19/26 ,  G11B27/34 ,  G11B27/36 ,  G11B2020/10814

摘要： An information recording and reproducing system comprises a host device, and an information recording and reproducing device connected with the host device via a host interface. The host device includes a control-command issuing unit issuing a control command to the information recording and reproducing device. The control command causes a data-recording interrupting-resuming unit of the information recording and reproducing device either or not to perform the interruption and resumption of the recording. The information recording and reproducing device includes a data-recording interruption-resumption control unit controlling the data-recording interrupting-resuming unit either or not to perform the interruption and resumption of the recording, according to the control command received from the host device. The interruption and resumption of the recording is performed by linking an end point of data upon the interruption with a start point of the data upon the resumption so as to maintain a continuity of the data.

摘要翻译： 信息记录和再现系统包括主机设备和经由主机接口与主机设备连接的信息记录和再现设备。 主机装置包括向信息记录和再现装置发出控制命令的控制命令发出单元。 控制命令使得信息记录和再现装置的数据记录中断恢复单元执行或不执行记录的中断和恢复。 信息记录和再现装置包括数据记录中继恢复控制单元，控制数据记录中断恢复单元，根据从主机设备接收到的控制命令来执行中断和恢复记录。 记录的中断和恢复是通过将中断时的数据终端与恢复时的数据的起始点相链接来实现的，以保持数据的连续性。

公开(公告)号：US06411588B1

公开(公告)日：2002-06-25

申请号：US09152329

申请日：1998-09-14

申请人： Toshiyuki Kase ,  Hiroshi Nishikawa

发明人： Toshiyuki Kase ,  Hiroshi Nishikawa

IPC分类号： G11B700

CPC分类号： G11B7/133 ,  G11B7/1263 ,  G11B7/1374 ,  G11B7/1381

摘要： Disclosed is an optical data recording/reproducing device which is provided with a laser diode for emitting laser beam, an illuminating optical system including an objective lens which converges the laser beam emitted by the laser diode on an optical disc, a monitoring optical system including a light receiving element which receives a part of the laser beam emitted by the laser diode, and a driving circuit which drives the laser diode in accordance with an output signal of the light receiving element. A coupling efficiency of the illuminating optical system and a coupling efficiency of the monitoring optical system are made substantially the same.

摘要翻译： 公开了一种设置有用于发射激光束的激光二极管的光学数据记录/再现装置，包括将由激光二极管发射的激光束会聚在光盘上的物镜的照明光学系统，包括 接收由激光二极管发射的激光束的一部分的光接收元件，以及根据光接收元件的输出信号来驱动激光二极管的驱动电路。 照明光学系统的耦合效率和监视光学系统的耦合效率基本上相同。