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1. 发明授权

US07839730B2 Optical pickup and optical disk drive apparatus 有权
标题翻译：光学拾取和光盘驱动装置
公开(公告)号：US07839730B2
公开(公告)日：2010-11-23
申请号：US12196797
申请日：2008-08-22
申请人： Kazuyoshi Ishii
发明人： Kazuyoshi Ishii
IPC分类号： G11B7/00
CPC分类号： G11B7/22 , G11B7/082 , G11B7/0935 , G11B7/121
摘要： An optical pickup includes an objective lens, a protection member for protecting the objective lens, and a lens holding member configured to hold these members. The optical pickup records and/or reproduces an information signal on and/or from an optical recording medium by condensing laser light through the objective lens. The protection member includes a bearing surface to contact a surface of an edge portion of the objective lens not facing the optical recording medium, an aperture to control a diameter of laser light to be incident on the objective lens, and a protection portion protruding toward the optical recording medium with respect to the objective lens. The bearing surface, the aperture, and the protection portion are integrally formed with one another.
摘要翻译：光学拾取器包括物镜，用于保护物镜的保护构件和被构造成保持这些构件的透镜保持构件。光学拾取器通过将激光聚焦通过物镜来记录和/或再现来自光学记录介质的信息信号。保护构件包括：接触物镜的不面向光学记录介质的边缘部分的表面的支承表面，用于控制入射在物镜上的激光的直径的孔，以及朝向相对于物镜的光学记录介质。轴承表面，孔和保护部分彼此一体地形成。

2. 发明申请

US20100214886A1 Optical Disc Apparatus Employing an Objective Lens Having a High Numerical Aperture 有权
标题翻译：使用具有高数值孔径的物镜的光盘装置
公开(公告)号：US20100214886A1
公开(公告)日：2010-08-26
申请号：US12773096
申请日：2010-05-04
申请人： Kazuyoshi Ishii
发明人： Kazuyoshi Ishii
IPC分类号： G11B7/00
CPC分类号： G11B7/1374 , G11B7/22
摘要： An optical disk apparatus that includes a movable part having an objective lens for focusing a laser beam onto an optical disk. A lens-holding member holds the objective lens. A protecting member prevents contact of the objective lens with the optical disk. An elastic supporting member supports the movable part, and an actuator drives the movable part toward or apart from the optical disk. The apparatus is constructed not to cause contact of the protecting member with the optical disk in a non-working state of the actuator, even when the elastic supporting member is bent by gravity toward the optical disk.
摘要翻译：一种光盘装置，包括具有用于将激光束聚焦到光盘上的物镜的可动部分。透镜保持构件保持物镜。保护构件防止物镜与光盘的接触。弹性支撑构件支撑可动部分，并且致动器朝向或远离光盘驱动可动部分。即使当弹性支撑构件通过重力朝向光盘弯曲时，该装置构造成不使保护构件与致动器的非工作状态下的光盘接触。

3. 发明授权

US06614731B2 Method and apparatus for recording magnetic domain having an arc shape convex in a forward scanning direction of a magneto-optical recording medium 失效
标题翻译：用于在磁光记录介质的正向扫描方向上记录具有弧形凸起的磁畴的方法和装置
公开(公告)号：US06614731B2
公开(公告)日：2003-09-02
申请号：US09781221
申请日：2001-02-13
申请人： Kazuyoshi Ishii
发明人： Kazuyoshi Ishii
IPC分类号： G11B1100
CPC分类号： G11B5/00 , G11B11/10508 , G11B11/10515 , G11B11/10528 , G11B11/10584 , G11B2005/0002 , G11B2005/0021
摘要： To provide an information recording method, an information recording apparatus and an information reproducing method and an apparatus for a domain wall mobile type magneto-optical medium. In the information recording method, a light beam scans on the medium for heating and at the same time a magnetic field modulated corresponding to the information is applied to a heated point, and a recording magnetic domain having an arc shaped magnetic domain wall bending convex in a forward direction of an operation of the light beam is formed so that the information is recorded. The information recording apparatus, includes an optical head to radiate the light beam for executing the information, a magnetic head to generate a magnetic field modulated corresponding to the information, and a unit for causing the optical head, the magnetic head and the medium to relatively move.
摘要翻译：提供信息记录方法，信息记录装置和信息再现方法以及域壁移动型磁光介质的装置。在信息记录方法中，光束在介质上扫描加热，并且同时将对该信息进行了调制的磁场施加到加热点，以及具有弧形磁畴壁弯曲凸起的记录磁畴形成光束的操作的向前方向，以便记录信息。信息记录装置包括：用于发射用于执行信息的光束的光学头，产生对应于该信息的调制的磁场的磁头;以及用于使光头，磁头和介质相对地移动。

4. 发明授权

US06584045B1 High speed magnetic coil for magneto-optical head 失效
标题翻译：磁光头高速磁线圈
公开(公告)号：US06584045B1
公开(公告)日：2003-06-24
申请号：US09674432
申请日：2000-11-01
申请人： Kazuyoshi Ishii , Kozo Yoshida
发明人： Kazuyoshi Ishii , Kozo Yoshida
IPC分类号： G11B1100
CPC分类号： G11B11/10534 , G11B5/17 , G11B11/10554 , G11B11/1058
摘要： The conductor pattern of a magnetic head coil includes a spiral coil pattern to which a current can be supplied to flow around the magnetic field generation center, and a conductor pattern which is formed outside the coil pattern and cannot receive a current so as to flow around the magnetic field generation center. Letting S be the distance from the outer edge of the outermost periphery of the coil pattern, and P be the pitch, a conductor occupation ratio R of a conductor pattern formed outside the coil pattern simultaneously satisfies inequalities 1 to 3, and the conductor pattern does not form any closed loop surrounding the coil pattern in a first region A1 given by inequality 1: Inequality 1: 0≦R≦0.3 in the first region A1 where 0≦S≦1.5P Inequality 2: 0≦R≦0.8 in a second region A2 where 1.5P
摘要翻译：磁头线圈的导体图案包括螺旋线圈图案，电流可以被供应到其周围磁场产生中心流动，导体图案形成在线圈图案外部并且不能接收电流以便流过磁场生成中心。设S为与线圈图案的最外周的外缘的距离，P为间距，形成在线圈图案外的导体图案的导体占有率R同时满足不等式1〜3，导体图案在由不等式1给出的第一区域A1中不形成围绕线圈图案的任何闭环：在第一区域A1中不等式1：0 <= R <= 0.3其中0 <= S <= 1.5P不等式2：0 <= R = 在第二区域A2中的0.8，其中在第三区域A3中，1.5P

5. 发明授权

US06298015B1 Magneto-optical reproducing method using a magnified magnetic domain 失效
标题翻译：使用放大磁畴的磁光再现方法
公开(公告)号：US06298015B1
公开(公告)日：2001-10-02
申请号：US09323995
申请日：1999-06-02
申请人： Kazuyoshi Ishii , Masakuni Yamamoto , Koichiro Nishikawa
发明人： Kazuyoshi Ishii , Masakuni Yamamoto , Koichiro Nishikawa
IPC分类号： G11B1100
CPC分类号： G11B11/10595 , G11B11/10508 , G11B11/10515 , G11B11/10528 , G11B11/1053
摘要： A method for reproducing information from a magneto-optical medium which includes a memory layer composed of magnetic film and a displacement layer composed of a magnetic film laminated with the memory layer is provided. Information signals are recorded on magnetized areas arranged in a predetermined direction on the memory layer. Domain walls having arc shapes curved in the same direction are formed on borders of the magnetized areas. The method includes the steps of: forming a high temperature area having shape of a circle or an elongated circle in the medium by scanning an array of the magnetized areas on the memory layer with a light spot in a direction toward convexities of the arc shapes of the magnetized areas; transferring one of the magnetized areas together with a domain wall to the displacement layer when a front end of the high temperature area reaches a domain wall at a front end of one of the magnetized areas in the memory layer in accordance with the scanning with the light spot; displacing the domain wall of the magnetized area transferred to the displacement layer toward a center of the high temperature area to magnify the magnetized area; and reproducing information by detecting reflected rays of the light spot in a condition where the magnetized area transferred to the displacement layer is magnified.
摘要翻译：提供一种从包括由磁性膜构成的存储层和由层叠有存储层的磁性膜构成的位移层的磁光介质再现信息的方法。信息信号被记录在存储层上沿预定方向布置的磁化区域上。在磁化区域的边界上形成具有在相同方向上弯曲的弧形的畴壁。该方法包括以下步骤：在介质中形成具有圆形或长圆形形状的高温区域，通过扫描存储层上的磁化区域的阵列，使光斑朝向凸起的方向凸出磁化区域; 当高温区域的前端到达存储层中的一个磁化区域的前端处的畴壁时，根据用光的扫描，将一个磁化区域与畴壁一起转移到位移层点; 将转移到位移层的磁化区域的畴壁朝向高温区域的中心移位，以放大磁化区域; 并且通过在转移到位移层的磁化区域被放大的状态下检测光斑的反射光线再现信息。

6. 发明授权

US5579293A Magnetic head driving circuit for controlling switching operations in a magnetooptical recording apparatus 失效
标题翻译：用于控制磁光记录装置中的切换操作的磁头驱动电路
公开(公告)号：US5579293A
公开(公告)日：1996-11-26
申请号：US476043
申请日：1995-06-07
申请人： Kazuyoshi Ishii
发明人： Kazuyoshi Ishii
IPC分类号： G11B5/02 , G11B11/10 , G11B11/105 , H03K17/687 , G11B11/00
CPC分类号： H03K17/6871 , G11B11/10508
摘要： A magnetic head driving apparatus is provided with a pair of switch elements for switching a direction of a current to be supplied to a magnetic head. ON/OFF operations of the pair of switch elements are controlled in correspondence with an information signal to be recorded so as to modulate a magnetic field generated by the magnetic head in accordance with the information signal. A predetermined time difference is provided between an ON operation of one switch element and an OFF operation of the other switch element of the pair of switch elements.
摘要翻译：磁头驱动装置设置有一对用于切换要供给到磁头的电流的方向的开关元件。对应于要记录的信息信号控制一对开关元件的ON / OFF操作，以便根据信息信号调制由磁头产生的磁场。在一个开关元件的ON操作和该对开关元件的另一个开关元件的OFF操作之间提供预定的时间差。

7. 发明授权

US5574702A Magnetic head current control circuit for use in a magnetic head drive device, and magnetic/magnetooptical recording apparatus using the same 失效
标题翻译：用于磁头驱动装置的磁头电流控制电路，以及使用其的磁/磁光记录装置
公开(公告)号：US5574702A
公开(公告)日：1996-11-12
申请号：US286331
申请日：1994-08-05
申请人： Kazuyoshi Ishii
发明人： Kazuyoshi Ishii
IPC分类号： G11B5/02 , G11B11/10 , G11B11/105 , H03K17/687 , G11B11/00
CPC分类号： G11B5/022 , G11B11/10508 , G11B5/02 , H03K17/6871
摘要： A magnetic head drive device includes a pair of auxiliary coils, a pair of switch elements respectively connected in series with the pair of auxiliary coils, and a magnetic head. The magnetic head is arranged between a node of the pair of auxiliary coils and the pair of switch elements. The switch elements are driven by control of a switch element drive device such that at least one of the pair of switch elements is maintained in an ON state for a predetermined period of time upon completion or interruption of information recording by the magnetic head. A current contol device is further provided so as to gradually decrease a current to be supplied to the pair of auxiliary coils during the ON state.
摘要翻译：磁头驱动装置包括一对辅助线圈，一对分别与一对辅助线圈串联连接的开关元件和磁头。磁头布置在一对辅助线圈的节点和一对开关元件之间。通过开关元件驱动装置的控制来驱动开关元件，使得在完成或中断由磁头进行的信息记录时，一对开关元件中的至少一个在保持预定的时间段内保持在ON状态。进一步设置当前的轮廓装置，以在接通状态期间逐渐减小要供应给一对辅助线圈的电流。

8. 发明授权

US5434831A Magneto-optical recording apparatus capable of both magnetic modulation and light modulation recording 失效
标题翻译：能够进行磁调制和光调制记录的磁光记录装置
公开(公告)号：US5434831A
公开(公告)日：1995-07-18
申请号：US297906
申请日：1994-08-31
申请人： Kazuyoshi Ishii , Koyo Hasegawa
发明人： Kazuyoshi Ishii , Koyo Hasegawa
IPC分类号： G11B11/105 , G11B13/04
CPC分类号： G11B11/10597 , G11B11/10506 , G11B11/10508 , G11B11/10517 , G11B11/10536 , G11B11/1058
摘要： Disclosed is a magneto-optical recording apparatus for recording an information signal on or for erasing an information signal from magneto-optical recording media by irradiating the magneto-optical recording media with a beam of light while applying a magnetic field thereto. The magneto-optical recording apparatus includes, as a magnetic field application device, a composite magnetic head which includes a first magnetic head capable of modulating a generated magnetic field in accordance with an information signal, and a second magnetic head capable of generating a constant magnetic field which is not associated with the information signal and capable of switching the direction of the constant magnetic field. This provides a magneto-optical recording apparatus which can use magneto-optical recording media for both light modulation type recording and magnetic field modulation type recording, and which ensures overwriting without increasing the overall size of the apparatus.
摘要翻译：公开了一种磁光记录装置，用于在向其施加磁场的同时用光束照射磁光记录介质，用于在磁光记录介质上擦除信息信号或用于擦除信息信号。磁光记录装置包括作为磁场施加装置的复合磁头，其包括能够根据信息信号调制产生的磁场的第一磁头和能够产生恒定磁场的第二磁头该场与信息信号不相关并且能够切换恒定磁场的方向。这提供了一种磁光记录装置，其可以使用用于光调制型记录和磁场调制型记录的磁光记录介质，并且其确保重写而不增加装置的总体尺寸。

9. 发明申请

US20090073855A1 OPTICAL PICKUP AND OPTICAL DISK DRIVE APPARATUS 有权
标题翻译：光学拾取和光盘驱动器
公开(公告)号：US20090073855A1
公开(公告)日：2009-03-19
申请号：US12196797
申请日：2008-08-22
申请人： Kazuyoshi Ishii
发明人： Kazuyoshi Ishii
IPC分类号： G11B7/135
CPC分类号： G11B7/22 , G11B7/082 , G11B7/0935 , G11B7/121
摘要： An optical pickup includes an objective lens, a protection member for protecting the objective lens, and a lens holding member configured to hold these members. The optical pickup records and/or reproduces an information signal on and/or from an optical recording medium by condensing laser light through the objective lens. The protection member includes a bearing surface to contact a surface of an edge portion of the objective lens not facing the optical recording medium, an aperture to control a diameter of laser light to be incident on the objective lens, and a protection portion protruding toward the optical recording medium with respect to the objective lens. The bearing surface, the aperture, and the protection portion are integrally formed with one another.
摘要翻译：光学拾取器包括物镜，用于保护物镜的保护构件和被构造成保持这些构件的透镜保持构件。光学拾取器通过将激光聚焦通过物镜来记录和/或再现来自光学记录介质的信息信号。保护构件包括：接触物镜的不面向光学记录介质的边缘部分的表面的支承表面，用于控制入射在物镜上的激光的直径的孔，以及朝向相对于物镜的光学记录介质。轴承表面，孔和保护部分彼此一体地形成。

10. 发明授权

US07333402B2 Magneto-optical head support structures 失效
标题翻译：磁光头支撑结构
公开(公告)号：US07333402B2
公开(公告)日：2008-02-19
申请号：US10760317
申请日：2004-01-21
申请人： Kazuyoshi Ishii , Kazunori Suzuki
发明人： Kazuyoshi Ishii , Kazunori Suzuki
IPC分类号： G11B11/00
CPC分类号： G11B5/4826 , G11B5/17 , G11B11/1055 , G11B11/1058
摘要： A suspension supporting a magnetic head is formed by a member different in material from gimbals. As a result, the characteristic of the gimbals minimizing electric power loss in supplying current while sufficiently elastically holding the magnetic head can be compatible with the characteristic of suspension suppressing variation and impact from the outside or rotational displacement although both characteristics are different from each other. This allows the displacement of the magnetic head caused by the vibration and the impact from the outside or the horizontal displacement associated with the vertical displacement of a recording medium to be decreased, so that inductance of the magnetic head can be decreased and recording speed can be improved.
摘要翻译：支撑磁头的悬架由不同于万向架的材料构成。结果，尽管两个特征彼此不同，但是在充分弹性地保持磁头的情况下，最小化供电时的电力损耗的万向面的特性可以与抑制来自外部的变化和冲击或旋转位移的悬架的特性兼容。这允许由振动引起的磁头的位移和来自外部的冲击或与记录介质的垂直位移相关联的水平位移减小，使得可以降低磁头的电感并且可以记录速度改进。

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