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1. 发明公开

EP0744738A1 Optical disk device 失效
标题翻译： OptischesPlattengerät
公开(公告)号：EP0744738A1
公开(公告)日：1996-11-27
申请号：EP96106655.2
申请日：1996-04-26
申请人： SHARP KABUSHIKI KAISHA
发明人： Ogata, Nobuo , Nakata, Yasuo , Sekimoto, Yoshihiro , Kojima, Kunio , Sato, Hideaki
IPC分类号： G11B7/09
CPC分类号： G11B7/094 , G11B7/0904 , G11B7/0941 , G11B7/0943 , G11B7/0948 , G11B11/10576
摘要： A light sensor is divided into two light receiving sections which receive light reflected by an optical disk. A first intermediate address signal is generated from a difference signal of outputs of the light receiving sections. A second intermediate address signal is generated from a sum signal of outputs of the light receiving sections. An address generating circuit generates an address signal by using the first and second intermediate address signals. An optical disk device stably generating an address signal regardless of a displacement of an objective lens and a change in reflectance of the optical disk is thus provided.
摘要翻译：光传感器被分为接收由光盘反射的光的两个光接收部分。第一中间地址信号由光接收部分的输出的差分信号产生。从光接收部分的输出的和信号产生第二中间地址信号。地址产生电路通过使用第一和第二中间地址信号来产生地址信号。因此，提供了与物镜的位移无关地稳定地产生地址信号的光盘装置和光盘的反射率的变化。

2. 发明公开

EP0392852A2 An optical head 失效
标题翻译：一个光学头
公开(公告)号：EP0392852A2
公开(公告)日：1990-10-17
申请号：EP90303990.7
申请日：1990-04-12
申请人： SHARP KABUSHIKI KAISHA
发明人： Ogata, Nobuo , Ueyama, Tetsuo , Sekimoto, Yoshihiro , Sato, Hideaki 109-13, Wakatsuki-cho , Nakata, Yasuo Akebono-ryo
IPC分类号： G11B7/135
CPC分类号： G11B7/1398 , G11B7/1359
摘要： An optical head having a beam splitting means (3) disposed in the light path from a collimating lens (2) to a beam-shaping means (4), whereby the light beam from a semiconductor laser beam source (1) retains its elliptical cross-section while it passes through the beam splitting means (3), an its cross-section is not made circular until it arrives at the beam-shaping means (4), so that the size of the beam splitting means (3), a converging lens (2) and other optical members can be reduced, which makes the optical head compact and lightweight.
摘要翻译：一种光学头，其具有设置在从准直透镜（2）到光束整形装置（4）的光路中的分束装置（3），由此来自半导体激光束源（1）的光束保持其椭圆形交叉在其通过光束分离装置（3）时，其截面在到达光束整形装置（4）之前不是圆形的，从而分束装置（3）的尺寸，a 会聚透镜（2）和其他光学元件可以减少，这使得光学头小巧轻便。

3. 发明公开

EP0252651A1 An objective lens driving unit 失效
标题翻译： AntjbseinheitfürObjektivlinse。
公开(公告)号：EP0252651A1
公开(公告)日：1988-01-13
申请号：EP87305618.8
申请日：1987-06-24
申请人： SHARP KABUSHIKI KAISHA
发明人： Deguchi, Toshihisa C-722 Daiya Heights Gakuenmae , Sekimoto, Yoshihiro , Ishii, Mitsuo , Nomura, Masaru
IPC分类号： G11B7/09
CPC分类号： G11B7/0935
摘要： An objective lens-driving unit comprises a lens supporting means (11) for supporting the objective lens (2) having an optical axis vertical to a recording medium (6) on which light beams converge through the objective lens (2) so as to attain optical recording, optical playing and optical erasing of information on the recording medium; and intermediate supporting means for supporting said lens supporting means (11) by use of springs (12) that are movable in the tracking direction (x); at least one driving means (16,21) for driving said lens supporting means (11) in the tracking direction (x); a driving means (23,28) for driving said intermediate supporting means in the focussing direction (y), wherein said tracking direction-driving means (16,21) comprises a magnetic circuit (16) that produces magnetic flux in the circumferential direction of the recording medium (6), and a tracking direction-driving coil (21) that is positioned to cross a gap (20) formed in the magnetic circuit to thereby receive an electro-magnetic force due to an interaction between the magnetic field of the magnetic circuit (16) and the current passing through said coil (21), said tracking direction-driving coil (21) being positioned within the excitation area of the magnetic circuit (16) even when said coil (21) moves in the focussing direction (y).
摘要翻译：物镜驱动单元包括：透镜支撑装置（11），用于支撑物镜（2），该物镜具有垂直于记录介质（6）的光轴，光束通过物镜（2）会聚，从而获得光学记录，光学播放和光学擦除信息在记录介质上; 以及中间支撑装置，用于通过使用可在跟踪方向（x）上移动的弹簧（12）来支撑所述透镜支撑装置（11）; 用于沿跟踪方向（x）驱动所述透镜支撑装置（11）的至少一个驱动装置（16,21）。用于在所述聚焦方向（y）上驱动所述中间支撑装置的驱动装置（23,28），其中所述跟踪方向驱动装置（16,21）包括磁路（16），所述磁路在周向上产生磁通量记录介质（6）和跟踪方向驱动线圈（21），该跟踪方向驱动线圈（21）定位成与形成在磁路中的间隙（20）交叉，从而接收由于磁场的磁场之间的相互作用而产生的电磁力磁路（16）和通过所述线圈（21）的电流，即使当所述线圈（21）沿聚焦方向移动时，所述跟踪方向驱动线圈（21）也位于磁路（16）的激励区域内（Y）。

4. 发明授权

EP0744738B1 Optical disk device 失效
公开(公告)号：EP0744738B1
公开(公告)日：2001-11-14
申请号：EP96106655.2
申请日：1996-04-26
申请人： SHARP KABUSHIKI KAISHA
发明人： Ogata, Nobuo , Nakata, Yasuo , Sekimoto, Yoshihiro , Kojima, Kunio , Sato, Hideaki
IPC分类号： G11B7/09
CPC分类号： G11B7/094 , G11B7/0904 , G11B7/0941 , G11B7/0943 , G11B7/0948 , G11B11/10576

5. 发明授权

EP0656626B1 Information recording-reproduction method 失效
标题翻译： /重放信息记录
公开(公告)号：EP0656626B1
公开(公告)日：2000-11-15
申请号：EP94119049.8
申请日：1994-12-02
申请人： SHARP KABUSHIKI KAISHA
发明人： Kojima, Kunio , Sekimoto, Yoshihiro , Nakata, Yasuo , Miyake, Tomoyuki , Ogata, Nobuo , Inui, Toshiharu
IPC分类号： G11B20/10 , G11B27/00 , G11B20/12 , G11B7/007 , G11B7/00
CPC分类号： G11B20/10527 , G11B7/0037 , G11B7/0045 , G11B7/005 , G11B11/10508 , G11B11/10563 , G11B11/10595 , G11B27/034 , G11B27/105 , G11B2220/20 , G11B2220/216 , G11B2220/2525 , G11B2220/2545

6. 发明授权

EP0594139B1 Objective lens driving apparatus 失效
标题翻译：驱动装置用于移动物镜
公开(公告)号：EP0594139B1
公开(公告)日：1997-07-23
申请号：EP93116896.7
申请日：1993-10-19
申请人： SHARP KABUSHIKI KAISHA
发明人： Sekimoto, Yoshihiro , Inui, Toshiharu , Nakata, Yasuo , Ogata, Nobuo , Sato, Hideaki
IPC分类号： G11B7/09
CPC分类号： G11B7/0932

7. 发明公开

EP0896326A2 Reproducing light quantity control method for optical memory device, and reproducing light quantity control device, and optical recording medium 失效
标题翻译：用于控制再现光量的光存储装置及光记录介质的方法和装置
公开(公告)号：EP0896326A2
公开(公告)日：1999-02-10
申请号：EP98114015.5
申请日：1998-07-27
申请人： Sharp Kabushiki Kaisha
发明人： Fuji, Hiroshi , Maeda, Shigemi , Miyake, Tomoyuki , Nakata, Yasuo , Ogata, Nobuo , Akiyama, Jun , Inui, Toshiharu , Sekimoto, Yoshihiro , Sato, Hideaki
IPC分类号： G11B7/125 , G11B11/10
CPC分类号： G11B7/126 , G11B7/005 , G11B7/00745 , G11B11/10515 , G11B11/10584 , G11B11/10595
摘要： A reproducing light quantity control method for an optical memory device includes the steps of (1) recording test data on an optical recording medium; (2) reproducing the test data recorded on the optical recording medium by changing a reproducing light quantity in a plurality of light quantity values; (3) measuring a quality value and a signal quantity of each of a plurality of reproducing signals from the test data; (4) selecting an optimum reproducing signal quantity from a plurality of reproducing signal quantities in accordance with quality values of the plurality of reproducing signals so as to decide a target value of reproducing signal quantity; and (5) recording the target value on a target value recording region of the optical recording medium. This method reduces the time required to obtain a target value of a reproducing signal quantity and speeds up an operation from installing of the optical recording medium to finishing of preparation for recording and reproducing.

8. 发明授权

EP0418087B1 Optical Head 失效
标题翻译：光学头
公开(公告)号：EP0418087B1
公开(公告)日：1995-11-15
申请号：EP90310047.7
申请日：1990-09-13
申请人： SHARP KABUSHIKI KAISHA
发明人： Ogata, Nobuo , Ueyama, Tetsuo , Sekimoto, Yoshihiro , Tanaka, Toshiyuki , Sato, Hideaki
IPC分类号： G11B7/135
CPC分类号： G11B7/1356 , G11B7/09 , G11B11/10541

9. 发明公开

EP0523622A2 Mirror drive mechanism in optical disc player 失效
标题翻译： Spiegelantriebs机制eines optischen Plattenspielers。
公开(公告)号：EP0523622A2
公开(公告)日：1993-01-20
申请号：EP92111974.9
申请日：1992-07-14
申请人： SHARP KABUSHIKI KAISHA
发明人： Sekimoto, Yoshihiro , Yamamoto, Yasuhiro , Ueyama, Tetsuo , Sato, Hideaki
IPC分类号： G11B7/135 , G11B7/09 , G11B7/085
CPC分类号： G11B7/08564 , G11B7/0925
摘要： A mirror drive mechanism (1) used in an optical disc player for angularly guiding a beam, of light includes a reflecting mirror (11) having a reflecting surface defined therein; a mirror holder (12) for supporting the mirror (11); a support structure (10) including generally elongated leaf spring means (15c, 15d) extending generally perpendicular to each other for supporting the mirror holder (12) at a position on a center axis of the reflecting surface of the mirror (11); a drive coil (13) secured to a surface of the mirror holder (12) opposite to the mirror (11); a magnetic circuit (14) mounted on the support structure (10) so as to confront the drive coil (13). This drive coil (13) is wound around the center axis of the mirror holder (12) and in a plane perpendicular to the center axis, and the magnetic circuit (14) includes at least two permanent magnets (14a, 14b) mounted on the support structure (10) with different magnetic poles thereof facing the drive coil (13).
摘要翻译：在光盘播放机中使用的用于角度地引导光束的镜子驱动机构（1）包括：反射镜（11），其具有限定在其中的反射表面; 用于支撑反射镜（11）的反射镜支架（12）; 支撑结构（10）包括大致垂直延伸的大致细长的板簧装置（15c，15d），用于将反射镜保持器（12）支撑在反射镜（11）的反射表面的中心轴线上的位置; 驱动线圈（13），其固定到所述镜保持器（12）的与所述反射镜（11）相对的表面; 安装在所述支撑结构（10）上以与所述驱动线圈（13）相对的磁路（14）。该驱动线圈（13）围绕反射镜支架（12）的中心轴线并且垂直于中心轴线的平面缠绕，并且磁路（14）包括至少两个安装在该主体上的永久磁铁（14a，14b）支撑结构（10），其不同的磁极面向驱动线圈（13）。

10. 发明公开

EP0392852A3 An optical head 失效
标题翻译：光学头
公开(公告)号：EP0392852A3
公开(公告)日：1991-01-09
申请号：EP90303990.7
申请日：1990-04-12
申请人： SHARP KABUSHIKI KAISHA
发明人： Ogata, Nobuo , Ueyama, Tetsuo , Sekimoto, Yoshihiro , Sato, Hideaki 109-13, Wakatsuki-cho , Nakata, Yasuo Akebono-ryo
IPC分类号： G11B7/135
CPC分类号： G11B7/1398 , G11B7/1359
摘要： An optical head having a beam splitting means (3) disposed in the light path from a collimating lens (2) to a beam-shaping means (4), whereby the light beam from a semiconductor laser beam source (1) retains its elliptical cross-section while it passes through the beam splitting means (3), an its cross-section is not made circular until it arrives at the beam-shaping means (4), so that the size of the beam splitting means (3), a converging lens (2) and other optical members can be reduced, which makes the optical head compact and lightweight.

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