公开(公告)号：US5477386A

公开(公告)日：1995-12-19

申请号：US917324

申请日：1992-07-23

申请人： Isao Okuda ,  Suguru Takishima ,  Masahiro Oono ,  Koichi Maruyama ,  Masato Noguchi

发明人： Isao Okuda ,  Suguru Takishima ,  Masahiro Oono ,  Koichi Maruyama ,  Masato Noguchi

IPC分类号： G02B5/04 ,  G11B7/135 ,  G02B7/18 ,  G02B13/10 ,  G02B27/10 ,  G11B7/12

CPC分类号： G11B7/1359 ,  G02B5/04

摘要： An optical system of an optical disc apparatus is disclosed for converging and projecting a bundle of rays emitted from a light source onto an optical disc. The optical system includes a collimating lens which collimates the bundle of rays emitted from the light source, two anamorphic prisms for shaping the cross section of the collimated bundle of rays transmitted through the collimating lens, and an objective lens which converges the bundle of rays shaped by the anamorphic prisms onto the optical disc. At least one of the anamorphic prisms is detachably mounted to an immovable body portion of the optical system.

摘要翻译： 公开了一种光盘装置的光学系统，用于会聚和投射从光源发射的光束到光盘上。 光学系统包括准直透镜，其准直从光源发射的光束，两个变形棱镜，用于对通过准直透镜透射的准直光束的横截面进行成形;以及物镜，会聚成束状的光束 通过变形棱镜到光盘上。 至少一个变形棱镜可拆卸地安装到光学系统的不动部分。

公开(公告)号：US5278401A

公开(公告)日：1994-01-11

申请号：US928408

申请日：1992-08-12

申请人： Suguru Takishima ,  Isao Okuda ,  Masahiro Oono ,  Koichi Maruyama ,  Masato Noguchi

发明人： Suguru Takishima ,  Isao Okuda ,  Masahiro Oono ,  Koichi Maruyama ,  Masato Noguchi

IPC分类号： G11B7/09 ,  G11B7/13 ,  G11B11/105 ,  G01J1/20 ,  G11B7/00

CPC分类号： G11B11/10597 ,  G11B11/10576 ,  G11B7/0903 ,  G11B7/0912 ,  G11B7/0943 ,  G11B7/131

摘要： A signal detecting apparatus in an optical disc apparatus having an objective lens which converges light emitted from a light source onto an optical disc and a condenser lens which converges light reflected by the optical disc and transmitted through the objective lens includes first and second light receiving elements, each having a light receiving surface located before or behind a convergence point on which the light reflected from the optical disc is converged when the objective lens is in a focal position. Each of the light receiving surfaces are split into at least four light receiving areas. The signal detecting apparatus also includes a means for calculating a sum of differences of outputs of the light receiving surfaces' inner light receiving areas, calculating a sum of differences of outputs of the light receiving surfaces' outer light receiving areas, and then calculating a difference of the sums of differences, so that a track error signal is output in accordance with the difference of sums of differences calculated by the calculating means.

摘要翻译： 在具有将从光源发射的光会聚到光盘上的物镜的光盘装置中的信号检测装置和会聚由光盘反射并透过物镜的光的聚光透镜包括第一和第二光接收元件 每个具有位于会聚点之前或之后的光接收表面，当物镜处于焦点位置时，从该光盘反射的光会聚在其上。 每个光接收表面被分成至少四个光接收区域。 信号检测装置还包括：计算受光面的内部光接收区域的输出的差的和的方式，计算受光面的外部光接收区域的输出的差的和，然后计算差 的差值之和，使得根据由计算装置计算的差值之差来输出轨道误差信号。

公开(公告)号：US5434835A

公开(公告)日：1995-07-18

申请号：US98252

申请日：1993-07-29

申请人： Hisashi Konno ,  Suguru Takishima ,  Takashi Morita ,  Toshiyuki Kase ,  Masahiro Oono ,  Koichi Maruyama ,  Masato Noguchi ,  Makoto Iki

发明人： Hisashi Konno ,  Suguru Takishima ,  Takashi Morita ,  Toshiyuki Kase ,  Masahiro Oono ,  Koichi Maruyama ,  Masato Noguchi ,  Makoto Iki

IPC分类号： G11B7/09

CPC分类号： G11B7/094

摘要： The optical disk apparatus of this invention is provided with a memory for memorizing a track offset signal corresponding to an angle of a galvanic mirror, or a photodetector having two pairs of photodetecting regions to detect different tracking error signals to each other, or two galvanic mirrors which are adjusted so as to prevent the track offset signal.

摘要翻译： 本发明的光盘装置设置有用于存储对应于电流反射镜的角度的光道偏移信号的存储器或具有两对光电检测区域的光电检测器，以检测彼此的不同跟踪误差信号，或两个电反射镜 其被调整以防止轨道偏移信号。

公开(公告)号：US5309423A

公开(公告)日：1994-05-03

申请号：US929535

申请日：1992-08-14

申请人： Masato Noguchi ,  Isao Okuda ,  Suguru Takishima

发明人： Masato Noguchi ,  Isao Okuda ,  Suguru Takishima

IPC分类号： G11B11/10 ,  G11B11/105 ,  G11B7/00

CPC分类号： G11B11/10543

摘要： A reflected light beam from a magneto-optic disk is reflected by a first and second reflective element toward a signal detecting system. The first reflective element reflects the reflected light from the magneto-optic disk and gives a phase difference into the light beam. The second reflective element reflects the reflected light by the first reflective element toward the signal detecting system, and gives a phase difference which has the same amount as the phase difference caused by the first reflective element, but with the inverse sign thereof.

摘要翻译： 来自磁光盘的反射光束被第一和第二反射元件反射向信号检测系统。 第一反射元件反射来自磁光盘的反射光，并给出光束的相位差。 第二反射元件将第一反射元件的反射光反射到信号检测系统，并且给出与由第一反射元件引起的相位差相同量的相位差，但是具有其相反的符号。

公开(公告)号：US06249500B1

公开(公告)日：2001-06-19

申请号：US09050873

申请日：1998-03-31

申请人： Hiroshi Kanazawa ,  Shimpei Shinozaki ,  Isao Okuda ,  Suguru Takishima

发明人： Hiroshi Kanazawa ,  Shimpei Shinozaki ,  Isao Okuda ,  Suguru Takishima

IPC分类号： G11B3392

CPC分类号： G11B17/0438 ,  G11B11/10558 ,  G11B11/10573

摘要： A disk cartridge loading system for a disk drive. The loading system includes a disk cartridge holder, a drawing mechanism, a draw-in sensor, a loading sensor, and a controller. The drawing mechanism engages a partially inserted disk cartridge to fully draw the disk cartridge into the disk drive, so that the disk cartridge is accommodated in a disk cartridge holder. A holder moving mechanism moves the disk cartridge holder to a loading position, so that at least one of a data reading operation and a data writing operation can be performed. A draw-in sensor is provided to detect the partial insertion of the disk cartridge, while a loading sensor detects when the disk cartridge is located at the loading position. A control unit controls the drawing mechanism and the holder moving mechanism, based on a first signal produced by the draw-in sensor and a second signal produced by the loading sensor.

摘要翻译： 用于磁盘驱动器的磁盘盒装载系统。 装载系统包括盘盒保持架，拉伸机构，抽入传感器，装载传感器和控制器。 拉拔机构接合部分插入的盘盒，以将盘盒完全拉入盘驱动器，使得盘盒容纳在盘盒保持器中。 保持器移动机构将盘盒保持器移动到装载位置，使得可以执行数据读取操作和数据写入操作中的至少一个。 提供了一个吸入传感器来检测盘盒的部分插入，而加载传感器检测盘盒何时位于装载位置。 控制单元基于由引入传感器产生的第一信号和由加载传感器产生的第二信号来控制绘图机构和保持器移动机构。

公开(公告)号：US4956833A

公开(公告)日：1990-09-11

申请号：US456068

申请日：1989-12-26

申请人： Hiroshi Kokado ,  Suguru Takishima ,  Koichiro Nishikawa ,  Junichi Takeda ,  Masahiko Sasaki ,  Isao Okuda ,  Hiroshi Yamamoto ,  Masami Ninomiya ,  Akihiro Tanaka ,  Hiroshi Motohashi ,  Makoto Iwaki ,  Wataru Kubo

发明人： Hiroshi Kokado ,  Suguru Takishima ,  Koichiro Nishikawa ,  Junichi Takeda ,  Masahiko Sasaki ,  Isao Okuda ,  Hiroshi Yamamoto ,  Masami Ninomiya ,  Akihiro Tanaka ,  Hiroshi Motohashi ,  Makoto Iwaki ,  Wataru Kubo

IPC分类号： G11B7/09 ,  G11B7/12 ,  G11B33/08

CPC分类号： G11B7/12 ,  G11B33/08 ,  G11B7/093 ,  G11B7/094

摘要： An optical disk apparatus comprises an optical pickup having an optical pickup body carrying a laser and a photodetector responsive to light emitted from the laser and reflected by the optical disk for producing tracking error signals mounted on the optical pickup body for reciprocal movement in a tracking direction responsive to operation of an actuator, and supports an objective for focusing the beam on the disk. A position sensor produces position signals in response to displacement of the movable portion in the tracking direction. Finally a servo tracking circuit outputs driving signals to the actuator on the basis of tracking error signals produced either in response to tracking error signals produced from outputs of the photodetector and position signals produced from output signals of the position sensor, in response only to the latter. The optical disk apparatus having the foregoing construction eliminates direct-current offset included in tracking error signals, stabilizes driving of the objective, and reduces access time.

摘要翻译： 一种光盘装置，包括具有携带激光的光学拾取器的光学拾取器和响应于由激光器发出并由光盘反射的光的光电检测器，用于产生安装在光学拾取器主体上的跟踪误差信号，用于在跟踪方向上往复运动 响应于致动器的操作，并且支持将光束聚焦在盘上的目的。 位置传感器响应可动部分在跟踪方向上的位移而产生位置信号。 最后，伺服跟踪电路根据由响应于由光电检测器的输出产生的跟踪误差信号和由位置传感器的输出信号产生的位置信号而产生的跟踪误差信号，将驱动信号输出到致动器，仅响应于后者 。 具有上述结构的光盘装置消除了包括在跟踪误差信号中的直流偏移，稳定了目标的驱动，并减少了存取时间。

公开(公告)号：US5995333A

公开(公告)日：1999-11-30

申请号：US50928

申请日：1998-03-31

申请人： Hiroshi Kanazawa ,  Shimpei Shinozaki ,  Isao Okuda ,  Suguru Takishima

发明人： Hiroshi Kanazawa ,  Shimpei Shinozaki ,  Isao Okuda ,  Suguru Takishima

IPC分类号： G11B11/105 ,  G11B17/04 ,  G11B5/54

CPC分类号： G11B17/0438 ,  G11B11/10558 ,  G11B11/10573

摘要： A magneto-optical disk drive incorporates: a structure to mount a front panel to a frame using a cartridge loading system, using a set of linearly movable control cam plates, to draw a cartridge into a cartridge holder and then to move the cartridge holder to an operating position; a timing control system for the cartridge loading system, which includes a unitary encoder cam gear including a drive gear portion to move the cam plates to lift and lower the cartridge holder, a cam groove portion to draw a cartridge into the cartridge holder, and timing encoders portions to interrupt photo sensors; a shutter mechanism to fully close a cartridge slot with a shutter, both when the drive holds a cartridge and when empty; a magnetic head vertical positioning system to position a magnetic head base against fixed reference surfaces below and a set of resilient members above; a magnetic head horizontal positioning system to first fix the magnetic head base to rotate horizontally about a point, and then to resiliently hold the base from rotating against a rigid member; a magnetic head carriage lock mechanism to hold a magnetic head carriage in its outermost radial position; and a control system for quickly synchronizing magnetic head movement and optical head movement by first moving both heads to an outermost radial position.

摘要翻译： 磁光盘驱动器包括：使用一组线性可移动控制凸轮板将盒前端面板安装到框架的结构，使用一组可线性移动的控制凸轮板将盒子拉入盒架中，然后将盒架移动到 经营职位; 一种用于盒装载系统的定时控制系统，其包括一个整体编码器凸轮齿轮，其包括用于移动凸轮板以提升和降低盒保持器的驱动齿轮部分，将盒子拉入盒保持器的凸轮槽部分， 编码器部分来中断光传感器; 一个快门机构，用于在驱动器固定墨盒时和空时完全关闭带有快门的墨盒槽; 磁头垂直定位系统，用于将磁头基座定位在下面固定的参考表面和一组上面的弹性构件; 一个磁头水平定位系统，用于首先将磁头基座固定在水平方向绕一个点旋转，然后弹性地将基座旋转抵靠刚性构件; 用于将磁头托架保持在其最外径位置的磁头托架锁定机构; 以及用于通过首先将两个头移动到最外径位置来快速地使磁头移动和光头移动同步的控制系统。

公开(公告)号：US5970037A

公开(公告)日：1999-10-19

申请号：US756698

申请日：1996-11-26

申请人： Hiroshi Kanazawa ,  Shimpei Shinozaki ,  Suguru Takishima ,  Isao Okuda

发明人： Hiroshi Kanazawa ,  Shimpei Shinozaki ,  Suguru Takishima ,  Isao Okuda

IPC分类号： G11B17/04 ,  G11B21/02

CPC分类号： G11B17/041

摘要： A magneto-optical disc apparatus, including a holder which holds a magneto-optical disc cartridge and which is movable between a loaded position, in which the holder is close to an optical head, and an unloaded position, in which the holder is apart from the optical head. The magneto-optical disc apparatus further includes a magnetic head which is movable between an initial position, in which the magnetic head is apart form the optical head, and an effective position, in which the magnetic head is close to the magneto-optical disc and can apply a magnetic field to the magneto-optical disc to record and/or play-back data. The magneto-optical disc apparatus features a mechanism for guiding the holder between the loaded position and the unloaded position. The apparatus further features a mechanism for guiding the magnetic head between the effective position and the initial position, and through an intermediate step position between the effective and initial positions.

摘要翻译： 一种磁光盘装置，包括保持器，其保持磁光盘盒并且能够在保持器靠近光学头的加载位置和卸载位置之间移动，在该位置中， 光头。 磁光盘装置还包括磁头，该磁头可以在磁头与光学头分离的初始位置和磁头靠近磁光盘的有效位置之间移动， 可以向磁光盘施加磁场以记录和/或重放数据。 磁光盘装置具有用于在保持器在加载位置和卸载位置之间引导保持器的机构。 该装置还具有用于在有效位置和初始位置之间以及通过有效位置和初始位置之间的中间步骤位置引导磁头的机构。

公开(公告)号：US5933291A

公开(公告)日：1999-08-03

申请号：US50976

申请日：1998-03-31

申请人： Hiroshi Kanazawa ,  Shimpei Shinozaki ,  Isao Okuda ,  Suguru Takishima ,  Takeharu Shin

发明人： Hiroshi Kanazawa ,  Shimpei Shinozaki ,  Isao Okuda ,  Suguru Takishima ,  Takeharu Shin

IPC分类号： G11B11/105 ,  G11B17/04 ,  G11B33/02

CPC分类号： G11B17/0438 ,  G11B11/10558 ,  G11B11/10573

摘要： A magneto-optical disk drive incorporates: a structure to mount a front panel to a frame using a cartridge loading system, using a set of linearly movable control cam plates, to draw a cartridge into a cartridge holder and then to move the cartridge holder to an operating position; a timing control system for the cartridge loading system, which includes a unitary encoder cam gear including a drive gear portion to move the cam plates to lift and lower the cartridge holder, a cam groove portion to draw a cartridge into the cartridge holder, and timing encoders portions to interrupt photo sensors; a shutter mechanism to fully close a cartridge slot with a shutter, both when the drive holds a cartridge and when empty; a magnetic head vertical positioning system to position a magnetic head base against fixed reference surfaces below and a set of resilient members above; a magnetic head horizontal positioning system to first fix the magnetic head base to rotate horizontally about a point, and then to resiliently hold the base from rotating against a rigid member; a magnetic head carriage lock mechanism to hold a magnetic head carriage in its outermost radial position; and a control system for quickly synchronizing magnetic head movement and optical head movement by first moving both heads to an outermost radial position.

摘要翻译： 磁光盘驱动器包括：使用一组线性可移动控制凸轮板将盒前端面板安装到框架的结构，使用一组可线性移动的控制凸轮板将盒子拉入盒架中，然后将盒架移动到 经营职位; 一种用于盒装载系统的定时控制系统，其包括一个整体编码器凸轮齿轮，其包括用于移动凸轮板以提升和降低盒保持器的驱动齿轮部分，将盒子拉入盒保持器的凸轮槽部分， 编码器部分来中断光传感器; 一个快门机构，用于在驱动器固定墨盒时和空时完全关闭带有快门的墨盒槽; 磁头垂直定位系统，用于将磁头基座定位在下面固定的参考表面和一组上面的弹性构件; 一个磁头水平定位系统，用于首先将磁头基座固定在水平方向绕一个点旋转，然后弹性地将基座旋转抵靠刚性构件; 用于将磁头托架保持在其最外径位置的磁头托架锁定机构; 以及用于通过首先将两个头移动到最外径位置来快速地使磁头移动和光头移动同步的控制系统。

公开(公告)号：US5608709A

公开(公告)日：1997-03-04

申请号：US334071

申请日：1994-11-04

申请人： Isao Okuda ,  Shimpei Shinozaki ,  Hiroshi Kanazawa ,  Suguru Takishima

发明人： Isao Okuda ,  Shimpei Shinozaki ,  Hiroshi Kanazawa ,  Suguru Takishima

IPC分类号： G11B11/10 ,  G11B7/135 ,  G11B11/105 ,  G11B17/04 ,  G11B7/00

CPC分类号： G11B17/0438 ,  G11B11/10545 ,  G11B11/10558 ,  G11B7/1356

摘要： A recording/reproducing apparatus incorporates a beam splitter arrangement that directs stray reflected light away from the incident and exit paths. The beam splitter is arranged such that refracting surfaces are angled away from a 45 degree angle by an amount corresponding to a refracted angle of an incident beam. The entire beam splitter is arranged in the recording/reproducing apparatus such that the refracted beam is refracted by a predetermined angle based on the known refractive index of the beam splitter prisms and the orientation of the beam splitter.

摘要翻译： 记录/再现装置包括一个分束器装置，其将杂散反射光引导离开入射和出射路径。 分束器被布置成使得折射表面与45度角成角度相对于入射光束的折射角度的量。 整个分束器被布置在记录/再现装置中，使得折射光束基于分束棱镜的已知折射率和分束器的取向折射预定角度。