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1. 发明授权

US5438557A Optical disk storage which provides pull-in of focus servo and pull-in of tracking servo 失效
标题翻译：光盘存储器提供聚焦伺服的拉入和跟踪伺服的拉入
公开(公告)号：US5438557A
公开(公告)日：1995-08-01
申请号：US217772
申请日：1994-03-24
申请人： Osamu Ito , Kyosuke Yoshimoto , Yoshihiro Kiyose , Kazuhiko Nakane , Akira Mashimo , Hiroyuki Onda , Koji Yamana , Takuya Nagata
发明人： Osamu Ito , Kyosuke Yoshimoto , Yoshihiro Kiyose , Kazuhiko Nakane , Akira Mashimo , Hiroyuki Onda , Koji Yamana , Takuya Nagata
IPC分类号： G11B7/085 , G11B7/09 , G11B7/00
CPC分类号： G11B7/0945
摘要： A miniaturized optical disk apparatus which performs a pull-in of a focus servo and a pull-in of a tracking servo without a position detector for detecting an optical head. If the optical head is located at a non-reflection film area and thus the focus servo cannot be performed, then the optical head is moved and the focus servo is performed again. This process is repeated until the focus servo can be achieved. In addition, if the optical head is located at a non-track area, then the optical disk is moved to a track area and then the tracking servo is performed. This process also repeated until the optical head is located over the track area. The tracking servo can be stably performed since it is performed only when the optical head is located over the track area. The present invention is applicable to the optical disk apparatus which uses a 3.5 in optical disk.
摘要翻译：执行聚焦伺服的引入和跟踪伺服的拉入的小型化光盘装置，而没有用于检测光学头的位置检测器。如果光头位于非反射膜区域，因此不能执行聚焦伺服，则移动光头并再次执行聚焦伺服。重复该过程，直到可以实现聚焦伺服。此外，如果光头位于非轨道区域，则将光盘移动到轨道区域，然后执行跟踪伺服。该过程也重复，直到光学头位于轨道区域上方。由于仅当光头位于轨道区域上方时才执行跟踪伺服，所以可以稳定地执行跟踪伺服。本发明适用于在光盘中使用3.5的光盘装置。

2. 发明授权

US5481517A Track jump control means for a disk apparatus 失效
标题翻译：用于盘装置的跟踪跳转控制装置
公开(公告)号：US5481517A
公开(公告)日：1996-01-02
申请号：US93440
申请日：1993-07-16
申请人： Kyosuke Yoshimoto , Yoshiki Nakajima , Kimiyuki Koyanagi , Osamu Ito , Akira Mashimo , Hiroyuki Onda , Yutaka Kobayashi , Koji Yamana
发明人： Kyosuke Yoshimoto , Yoshiki Nakajima , Kimiyuki Koyanagi , Osamu Ito , Akira Mashimo , Hiroyuki Onda , Yutaka Kobayashi , Koji Yamana
IPC分类号： G11B21/08 , G11B7/085 , G11B7/00
CPC分类号： G11B7/08517
摘要： The disk drive apparatus of the present invention has an optical pickup that jumps a track to perform track jumping when a jumping voltage is impressed, and that traces a track by performing brake operation when a braking voltage is applied, and actuator that drives the optical pickup, a signal processing part that performs focus and tracking control with respect to the optical pickup, a movement time measurement part that measures the movement time when a light beam emitted from the optical pickup is moved to cross a track to a required track, a voltage control part that uses the results of measurement to generate parameters and a voltage value that is applied to the actuator, a storage part that stores voltage value that is generated by the voltage value setting part, and that after a disk is loaded, first stores data of that disk in the storage part and uses those data values according to the track jump operation.
摘要翻译：本发明的磁盘驱动装置具有跳跃轨道的光拾取器，当施加跳跃电压时进行轨道跳跃，并且当施加制动电压时通过执行制动操作来跟踪轨道，以及驱动光学拾取器的致动器执行相对于光学拾取器的聚焦和跟踪控制的信号处理部件，测量从光学拾取器发射的光束移动到所需轨道的轨迹的移动时间的移动时间测量部件，电压使用测量结果的控制部件生成参数和施加到致动器的电压值，存储部分，其存储由电压值设定部分产生的电压值，以及在盘装载之后首先存储数据并且根据轨道跳转操作使用那些数据值。

3. 发明授权

US5309415A Information recording method for overwriting a magneto-optic recording medium with two intensities of light beams 失效
标题翻译：用于重写具有两束光束的磁光记录介质的信息记录方法
公开(公告)号：US5309415A
公开(公告)日：1994-05-03
申请号：US734963
申请日：1991-07-24
申请人： Koichi Takeuchi , Osamu Ito , Kyosuke Yoshimoto , Kunimaro Tanaka , Isao Watanabe , Kazuhiko Tsutsumi , Ryuichirou Arai , Yoshihiro Kiyose , Kazuhiko Nakane , Teruo Furukawa , Masayoshi Shimamoto , Yoshiyuki Nakai
发明人： Koichi Takeuchi , Osamu Ito , Kyosuke Yoshimoto , Kunimaro Tanaka , Isao Watanabe , Kazuhiko Tsutsumi , Ryuichirou Arai , Yoshihiro Kiyose , Kazuhiko Nakane , Teruo Furukawa , Masayoshi Shimamoto , Yoshiyuki Nakai
IPC分类号： G11B7/09 , G11B11/105 , G11B13/04 , G11B11/10 , G11B11/12
CPC分类号： G11B11/10517 , G11B11/10586 , G11B7/0901
摘要： Methods and apparatuses are disclosed for improving accuracy of recording and reproducing information onto and from a magneto-optic recording information medium. In the first method, a width of a mark formed by a relatively low intensity light beam between two kinds of light beam intensities used for recording information is made larger than a sum of a track land width and the maximum track offset of the light beam, thereby the mark formed by the relatively low intensity light beam covers the track land portion in its full width. In the first apparatus, a reflected light beam from the magneto-optic recording information medium is split into a reflected beam for information reproducing and a reflected beam for tracking and focusing servos at the reproducing, thereby the apparatus can remove part being affected by the track groove portion from the reflected light beam for information reproducing. In the second method and apparatus, an intensity ratio of the two kinds of intensities of light beams used for information recording is controlled in such a manner that a mark width formed by the relative low intensity light beam is wider than a mark width formed by the relative high intensity light beam.
摘要翻译：公开了用于提高在磁光记录信息介质上记录和再现信息的精度的方法和装置。在第一种方法中，使用用于记录信息的两种光束强度之间由相对低强度的光束形成的标记的宽度大于光束的轨迹平面宽度和最大光轨偏移之和，由此由相对低强度的光束形成的标记以其宽度覆盖轨迹陆部。在第一装置中，来自磁光记录信息介质的反射光束被分成用于信息再现的反射光束和用于在再现时跟踪和聚焦伺服的反射光束，从而该装置可以去除受轨迹影响的部分沟槽部分，用于信息再现。在第二方法和装置中，用于信息记录的光束的两种强度的强度比被控制为使得由相对低强度光束形成的标记宽度比由相对高强度光束。

4. 发明授权

US5272684A Information recording method and information recording apparatus for magneto-optic recording information medium 失效
标题翻译：用于磁光记录信息介质的信息记录方法和信息记录装置
公开(公告)号：US5272684A
公开(公告)日：1993-12-21
申请号：US558673
申请日：1990-07-26
申请人： Koichi Takeuchi , Osamu Ito , Kyosuke Yoshimoto , Kunimaro Tanaka , Isao Watanabe , Kazuhiko Tsutsumi , Ryuichirou Aria , Yoshihiro Kiyose , Kazuhiko Nakane , Teruo Furukawa , Masayoshi Shimamoto , Yoshiyuki Nakaki
发明人： Koichi Takeuchi , Osamu Ito , Kyosuke Yoshimoto , Kunimaro Tanaka , Isao Watanabe , Kazuhiko Tsutsumi , Ryuichirou Aria , Yoshihiro Kiyose , Kazuhiko Nakane , Teruo Furukawa , Masayoshi Shimamoto , Yoshiyuki Nakaki
IPC分类号： G11B7/09 , G11B11/105 , G11B11/00 , G11B3/70
CPC分类号： G11B11/10517 , G11B11/10586 , G11B7/0901
摘要： Methods and apparatuses are disclosed for improving accuracy of recording and reproducing information onto and from a magneto-optic recording information medium. In the first method, a width of a mark formed by a relatively low intensity light beam between two kinds of light beam intensities used for recording information is made larger than a sum of a track land width and the maximum track offset of the light beam, thereby the mark formed by the relatively low intensity light beam covers the track land portion in its full width. In the first apparatus, a reflected light beam from the magneto-optic recording information medium is split into a reflected beam for information reproducing and a reflected beam for tracking and focusing servos at the reproducing, thereby the apparatus can remove part being affected by the track groove portion from the reflected light beam for information reproducing. In the second method and apparatus, an intensity ratio of the two kinds of intensities of light beams used for information recording is controlled in such a manner that a mark width formed by the relative low intensity light beam is wider than a mark width formed by the relative high intensity light beam.
摘要翻译：公开了用于提高在磁光记录信息介质上记录和再现信息的精度的方法和装置。在第一种方法中，使用用于记录信息的两种光束强度之间由相对低强度的光束形成的标记的宽度大于光束的轨迹平面宽度和最大光轨偏移之和，由此由相对低强度的光束形成的标记以其宽度覆盖轨迹陆部。在第一装置中，来自磁光记录信息介质的反射光束被分割成用于信息再现的反射光束和用于在再现时跟踪和聚焦伺服的反射光束，从而该装置可以去除受轨迹影响的部分沟槽部分，用于信息再现。在第二方法和装置中，用于信息记录的光束的两种强度的强度比被控制为使得由相对低强度光束形成的标记宽度比由相对高强度光束。

5. 发明授权

US5197048A Magneto-optic recording medium, magneto-optic recording system and magneto-optic recording method 失效
标题翻译：磁光记录介质，磁光记录系统和磁光记录方法
公开(公告)号：US5197048A
公开(公告)日：1993-03-23
申请号：US770602
申请日：1991-10-03
申请人： Kyosuke Yoshimoto , Osamu Ito , Kunimaro Tanaka , Koichi Takeuchi , Isao Watanabe , Kazuhiko Tsutsumi
发明人： Kyosuke Yoshimoto , Osamu Ito , Kunimaro Tanaka , Koichi Takeuchi , Isao Watanabe , Kazuhiko Tsutsumi
IPC分类号： G11B13/04
CPC分类号： G11B13/04
摘要： A magneto-optic recording medium has a cartridge provided with a magnetization direction indicating portion for indicating the direction of magnetization of a second magnetic layer. Alternatively, the direction of magnetization of the second magnetic layer is recorded in advance in the first magnetic layer. The direction of magnetization of the second magnetic layer indicated or recorded is detected and recognized. A magnetic field oriented in an opposite direction to the direction of magnetization detected is imparted to the magneto-optic recording medium. Alternatively, predetermined information is recorded in the first magnetic layer, the direction of magnetization of the second magnetic layer is detected on the basis of a signal reproducing that information, and the direction of a magnetic field to be applied to the magneto-optic recording medium is set on the basis of the direction of magnetization thus detected. In addition, the direction of the magnetic field to be applied to the magneto-optic recording medium is set and the output of a light beam is changed on the basis of the direction of the second magnetic layer detected.
摘要翻译：磁光记录介质具有带有用于指示第二磁性层的磁化方向的磁化方向指示部的盒。或者，第二磁性层的磁化方向预先记录在第一磁性层中。检测并识别表示或记录的第二磁性层的磁化方向。向磁光记录介质赋予与所检测的磁化方向相反的方向取向的磁场。或者，预定信息被记录在第一磁性层中，基于再现该信息的信号和施加到磁光记录介质的磁场的方向来检测第二磁性层的磁化方向基于这样检测的磁化方向设定。此外，设置施加到磁光记录介质的磁场的方向，并且基于检测到的第二磁性层的方向改变光束的输出。

6. 发明授权

US5321675A Pit spacing in the servo field of an optical disk for speed and direction detection and data retrieval 失效
标题翻译：光盘伺服场中的坑间距用于速度和方向检测和数据检索
公开(公告)号：US5321675A
公开(公告)日：1994-06-14
申请号：US318594
申请日：1989-02-28
申请人： Osamu Ito , Masaharu Ogawa , Kyosuke Yoshimoto , Kunimaro Tanaka , Teruo Furukawa , Masafumi Ototake
发明人： Osamu Ito , Masaharu Ogawa , Kyosuke Yoshimoto , Kunimaro Tanaka , Teruo Furukawa , Masafumi Ototake
IPC分类号： G11B7/007 , G11B7/085 , G11B7/09
CPC分类号： G11B7/00745 , G11B7/08529 , G11B7/0938
摘要： A sampled servo type optical disc and its driving apparatus is disclosed, in which by cyclically repeating wobbled pits or address pits of the optical disc composed by two significant digits at every N tracks, and preformatting by patterns spaced in different intervals at every track, when the optical disc driving apparatus seeks an object track, the seek direction of the optical head can be detected by the sequence of change of the pattern, and its seek speed can be detected at high speed by the detected result of the pattern, ensuring the speed control of the optical head in response to the detected seek direction and speed.
摘要翻译：公开了一种采样的伺服型光盘及其驱动装置，其中通过循环重复由每个N个磁道由两个有效数字组成的光盘的波形凹坑或地址坑，并且通过在每个轨道上以不同间隔隔开的图案预格式化，光盘驱动装置寻找物体轨道，可以通过图案变化的顺序来检测光学头的寻道方向，并且可以通过检测到的图案的结果高速检测其寻道速度，确保速度响应于检测到的寻道方向和速度来控制光头。

7. 发明授权

US5251194A Techniques for controlling beam position and focus in optical disk drives 失效
标题翻译：控制光盘位置和聚焦光盘驱动器的技术
公开(公告)号：US5251194A
公开(公告)日：1993-10-05
申请号：US513079
申请日：1990-04-12
申请人： Kyosuke Yoshimoto , Osamu Ito , Kimiyuki Koyanagi , Yoshiki Nakajima , Shuitsu Takeda , Kyoji Shimoda
发明人： Kyosuke Yoshimoto , Osamu Ito , Kimiyuki Koyanagi , Yoshiki Nakajima , Shuitsu Takeda , Kyoji Shimoda
IPC分类号： G11B7/09 , G11B7/095
CPC分类号： G11B7/0945 , G11B7/094 , G11B7/0941 , G11B7/0901 , G11B7/0908 , G11B7/0946
摘要： An optical disk drive for recording and reproducing information on an optical disk medium includes a servo circuit for controlling tracking of a light beam on a predetermined track and a servo circuit for controlling focus of the light beam on the disk surface. The disk surface is divided into a plurality of regions, and calibration values for adjusting the servo circuits are determined in each region. The calibration values are stored in a memory and are used to adjust the servo circuits during tracking on a predetermined track. The calibration values include tracking offset values, focus offset values, servo deviation threshold values and sensor gain values. A number of techniques are disclosed for automatically determining the calibration values.
摘要翻译：用于在光盘介质上记录和再现信息的光盘驱动器包括用于控制预定轨道上的光束的跟踪的伺服电路和用于控制光盘在盘表面上的聚焦的伺服电路。磁盘表面被分成多个区域，并且在每个区域中确定用于调整伺服电路的校准值。校准值存储在存储器中，并且用于在预定轨道上的跟踪期间调整伺服电路。校准值包括跟踪偏移值，对焦偏移值，伺服偏差阈值和传感器增益值。公开了用于自动确定校准值的许多技术。

8. 发明授权

US5172364A Magneto-optic recording apparatus with controlled magnetic field generation 失效
标题翻译：具有受控磁场产生的磁光记录装置
公开(公告)号：US5172364A
公开(公告)日：1992-12-15
申请号：US558584
申请日：1990-07-26
申请人： Kyosuke Yoshimoto , Osamu Ito , Kunimaro Tanaka , Koichi Takeuchi , Isao Watanabe , Kazuhiko Tsutsumi
发明人： Kyosuke Yoshimoto , Osamu Ito , Kunimaro Tanaka , Koichi Takeuchi , Isao Watanabe , Kazuhiko Tsutsumi
IPC分类号： G11B11/105
CPC分类号： G11B11/10521 , G11B11/10504 , G11B11/10515 , G11B11/10534 , G11B11/10536 , G11B11/10586 , G11B11/10595
摘要： A magneto-optic recording apparatus which has a magnetic field generator that applies a magnetic field with a constant direction to a magneto-optic recording information medium for overwriting information to improve accuracy of recording and reproducing information onto and from magneto-optic recording information medium and further has an auxiliary magnetic field generator that compensates a variation of intensity of a magnetic field generated by the magnetic field generator and applied to the magneto-optic recording information medium is disclosed as the first invention. Also, a magneto-optic recording apparatus which performs synchronous wave detection of the reflected light signals from the magneto-optic recording information medium and controls A.C. voltages applied to an exciting coil of the magnetic field generator in response to the detected result of the synchronous wave detection, thus optimizing amplitudes of the reproducing signals from the magneto-optic recording information medium is disclosed as the second invention.
摘要翻译：一种磁光记录装置，具有磁场发生器，该磁场发生器将具有恒定方向的磁场施加到磁光记录信息介质，用于重写信息，以提高在磁光记录信息介质上记录和再现信息的准确度;以及作为第一发明，还公开了补偿由磁场发生器产生的磁场的强度变化并应用于磁光记录信息介质的辅助磁场发生器。另外，磁光记录装置，对来自磁光记录信息介质的反射光信号进行同步波检测，并响应于同步波的检测结果控制施加到磁场发生器的励磁线圈的AC电压作为第二发明，公开了检测，从而优化来自磁光记录信息介质的再现信号的振幅。

9. 发明授权

US5128916A Optical disc with alternating servo patterns and driving apparatus therefor 失效
标题翻译：具有交替伺服图案的光盘及其驱动装置
公开(公告)号：US5128916A
公开(公告)日：1992-07-07
申请号：US526584
申请日：1990-05-21
申请人： Osamu Ito , Masaharu Ogawa , Kyosuke Yoshimoto , Kunimaro Tanaka , Teruo Furukawa , Yoshiki Nakajima
发明人： Osamu Ito , Masaharu Ogawa , Kyosuke Yoshimoto , Kunimaro Tanaka , Teruo Furukawa , Yoshiki Nakajima
IPC分类号： G11B7/007 , G11B7/013 , G11B7/085 , G11B19/04 , G11B19/20 , G11B27/30
CPC分类号： G11B19/20 , G11B19/04 , G11B27/3027 , G11B7/00745 , G11B7/08529 , G11B7/0857 , G11B7/24085
摘要： An optical disc having a plurality of information tracks, each information track having a servo field including a pair of wobbled pits and a clock pit. The distance between one of the wobbled pits and the clock pit in each servo field is selected such that the optical disc includes at least three different types of servo field. These differnt types of servo field appear in a predetermined sequence for every one or more contiguous information tracks. A driving apparatus for driving such an optical disc has a direction detecting circuit for detecting the moving velocity of a movable portion of an optical head, and a speed detecting circuit for detecting the relative velocity of the movable portion.
摘要翻译：具有多个信息轨道的光盘，每个信息轨道具有包括一对摆动凹坑和时钟凹坑的伺服场。选择每个伺服字段中的摆动凹坑之一和时钟凹坑之间的距离，使得光盘包括至少三种不同类型的伺服字段。对于每一个或多个连续的信息轨道，这些不同类型的伺服字段以预定的顺序出现。用于驱动这种光盘的驱动装置具有用于检测光学头的可移动部分的移动速度的方向检测电路和用于检测可动部分的相对速度的速度检测电路。

10. 发明授权

US4775965A Optical system for recording, reproducing, and/or erasing information 失效
标题翻译：用于记录，再现和/或擦除信息的光学系统
公开(公告)号：US4775965A
公开(公告)日：1988-10-04
申请号：US099488
申请日：1987-09-22
申请人： Kyosuke Yoshimoto , Osamu Ito
发明人： Kyosuke Yoshimoto , Osamu Ito
IPC分类号： G11B7/013 , G11B7/09 , G11B7/00
CPC分类号： G11B7/24085 , G11B7/0938
摘要： Disclosed in a system for recording, reproducing, and/or erasing information as recording pits on a recording medium. This medium has guide grooves for recording reproducing, and/or erasing the informatin signal. A condition whereby the value which is obtained by subtracting the groove width from the groove pitch is larger than a width of the recording pits is satisfied. A predetermined position for recording, reproducing, and/or erasing is set between the guide grooves. Alternatively, a condition whereby the width of a guide groove is larger than the width of a recording pit is satisfied. A predetermined position for recording, reproducing, and/or erasing is set on the guide groove.
摘要翻译：在用于记录，再现和/或擦除作为记录凹坑的记录介质上的信息的系统中公开。该介质具有用于记录再现的导槽，和/或擦除信息信号。满足通过从凹槽间距减去凹槽宽度而获得的值大于记录凹坑的宽度的条件。在引导槽之间设置用于记录，再现和/或擦除的预定位置。或者，满足引导槽的宽度大于记录凹坑的宽度的条件。用于记录，再现和/或擦除的预定位置设置在引导槽上。

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