公开(公告)号：US6052358A

公开(公告)日：2000-04-18

申请号：US942103

申请日：1997-10-01

申请人： Toru Morikawa ,  Takashi Izuka

发明人： Toru Morikawa ,  Takashi Izuka

IPC分类号： G11B7/085 ,  G11B21/08 ,  G11B17/30

CPC分类号： G11B7/08582 ,  G11B21/083

摘要： A head feeding mechanism used for an apparatus for recording and/or reading information signals on/from such a recording medium as an optical disk comprises a head mechanism, a feed screw, a rotation driving mechanism, a base, and a forcing mechanism. The feed screw is engaged with the head mechanism and rotated to feed the head mechanism. The rotation driving mechanism drives the feed screw to rotate. On the base is arranged the rotation driving mechanism. The base includes a pair of bearings used for the feed screw. At least one of the pair of bearings is a thrust bearing. The forcing mechanism is provided on the base and butts against one end of the feed screw. The forcing mechanism applies a force working on the feed screw both in the thrust direction and in the direction orthogonal to the thrust direction.

摘要翻译： 用于记录和/或读取作为光盘的记录介质上的信息信号的设备的头进给机构包括头机构，进给螺杆，旋转驱动机构，基座和迫动机构。 进给螺杆与头部机构接合并旋转以进给头部机构。 旋转驱动机构驱动进给螺杆旋转。 在基座上设有旋转驱动机构。 底座包括用于进给螺杆的一对轴承。 这对轴承中的至少一个是推力轴承。 强制机构设置在基座上并抵靠进给螺杆的一端。 强制机构在推力方向和与推力方向正交的方向上施加作用在进给螺杆上的力。

公开(公告)号：US20060077826A1

公开(公告)日：2006-04-13

申请号：US11230631

申请日：2005-09-21

申请人： Takashi Izuka

发明人： Takashi Izuka

IPC分类号： G11B20/10

CPC分类号： G11B7/005 ,  G11B19/125 ,  G11B2007/0006

摘要： A disc playback apparatus is configured to reproduce information by demodulating and decoding a radio-frequency signal obtained by receiving reflected light of a beam applied to a recording surface of a removable disc when the disc is loaded in the disc playback apparatus. The apparatus includes a disc format determining unit adapted to determine the format of the loaded disc, a high-frequency compensation unit adapted to compensate for a high-frequency component of the radio-frequency signal, a low-frequency compensation unit adapted to compensate for a low-frequency component of the radio-frequency signal, and a control unit adapted to determine which of the high-frequency compensation unit or the low-frequency compensation unit is to be used to compensate for a frequency characteristic of the radio-frequency signal based on the determined disc format.

公开(公告)号：US5555228A

公开(公告)日：1996-09-10

申请号：US340066

申请日：1994-11-15

申请人： Takashi Izuka

发明人： Takashi Izuka

IPC分类号： G11B7/09 ,  G11B7/12 ,  G11B7/135

CPC分类号： G11B7/1362 ,  G11B7/0932 ,  G11B7/0933 ,  G11B7/0935 ,  G11B7/123

摘要： An optical pickup device employing an objective lens driving device for displacing an objective lens relative to an optical disc surface in directions parallel and normal to the optical axis of the objective lens. The objective lens is mounted in a movable part consisting of a bobbin having an opening at its mid portion. A plurality of resilient supporting members movably support the movable part. A magnetic circuit unit includes a flat-plate-shaped member carrying a focusing coil and a tracking coil. The flat-plate-shaped member extends parallel to the optical axis of the objective lens. The focusing and tracking coils drive the movable part in a direction parallel to, and in the planar direction normal to, the optical axis of the objective lens. An objective lens driving device is mounted for translating movement on a base member on which are mounted a light source, a light receiving element (for receiving return light), a reflective mirror, and a beam splitter.

摘要翻译： 一种采用物镜驱动装置的光学拾取装置，用于使物镜相对于光盘表面在与物镜的光轴平行和垂直的方向上移位。 物镜安装在由其中部具有开口的线轴组成的可动部分中。 多个弹性支撑构件可移动地支撑可动部。 磁路单元包括承载聚焦线圈和跟踪线圈的平板状构件。 平板状构件平行于物镜的光轴延伸。 聚焦跟踪线圈沿与物镜的光轴垂直的平面方向的方向驱动可动部。 安装物镜驱动装置，用于在安装有光源的基底构件，用于接收返回光的光接收元件，反射镜和分束器上平移运动。

公开(公告)号：USD599218S1

公开(公告)日：2009-09-01

申请号：US29335586

申请日：2009-04-17

申请人： Takashi Izuka ,  Satoshi Sugiura ,  Benjamin Cheng Chin Hoi

设计人： Takashi Izuka ,  Satoshi Sugiura ,  Benjamin Cheng Chin Hoi

公开(公告)号：US07539096B2

公开(公告)日：2009-05-26

申请号：US11230631

申请日：2005-09-21

申请人： Takashi Izuka

发明人： Takashi Izuka

IPC分类号： G11B20/00

CPC分类号： G11B7/005 ,  G11B19/125 ,  G11B2007/0006

摘要： A disc playback apparatus is configured to reproduce information by demodulating and decoding a radio-frequency signal obtained by receiving reflected light of a beam applied to a recording surface of a removable disc when the disc is loaded in the disc playback apparatus. The apparatus includes a disc format determining unit adapted to determine the format of the loaded disc, a high-frequency compensation unit adapted to compensate for a high-frequency component of the radio-frequency signal, a low-frequency compensation unit adapted to compensate for a low-frequency component of the radio-frequency signal, and a control unit adapted to determine which of the high-frequency compensation unit or the low-frequency compensation unit is to be used to compensate for a frequency characteristic of the radio-frequency signal based on the determined disc format.

摘要翻译： 光盘播放装置被配置为通过解调和解码当光盘装载到光盘播放装置中时，通过接收施加到可移除光盘的记录表面的光束的反射光获得的射频信号来再现信息。 该装置包括：盘格式确定单元，用于确定加载的盘的格式;适用于补偿射频信号的高频分量的高频补偿单元;适于补偿 射频信号的低频分量;以及控制单元，其适于确定要使用高频补偿单元或低频补偿单元中的哪一个来补偿射频信号的频率特性 基于确定的光盘格式。

公开(公告)号：US5666235A

公开(公告)日：1997-09-09

申请号：US618497

申请日：1996-03-19

申请人： Takashi Izuka

发明人： Takashi Izuka

IPC分类号： G11B7/09 ,  G11B7/12 ,  G02B7/02

CPC分类号： G11B7/123 ,  G11B7/0933 ,  G11B7/0935

摘要： An objective lens driving device employed for a recording and/or reproducing apparatus for an optical recording medium includes a bobbin on which an objective lens is mounted, a supporting mechanism, first and second coils and a magnetic circuit. The supporting mechanism supports the bobbin in at least one of a first direction parallel to the optical axis of the objective lens and a second direction perpendicular to the optical axis. The first coil is provided on the bobbin and is mounted so that at least its one coil side is substantially perpendicular to the first direction. The second coil is provided on the bobbin and is mounted so that at least its one coil side is substantially parallel to the first direction. The magnetic circuit has a pair of magnets facing each other with a pre-set gap in-between. The first and second coils are arranged in the gap and plane-symmetrically with respect to the centerline of the gap.

摘要翻译： 用于光记录介质的记录和/或再现装置的物镜驱动装置包括安装有物镜的线轴，支撑机构，第一和第二线圈和磁路。 支撑机构在与物镜的光轴平行的第一方向和与光轴垂直的第二方向中的至少一方支撑筒管。 第一线圈设置在线轴上并且被安装成使得至少其一个线圈侧基本上垂直于第一方向。 第二线圈设置在线轴上，并且安装成使得至少其一个线圈侧基本上平行于第一方向。 磁路具有彼此面对的一对磁体，其间具有预设的间隙。 第一和第二线圈相对于间隙的中心线布置在间隙中并且平面对称。