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1. 发明授权

US06807140B2 Optical pickup device for emitting laser beams having different wavelengths and optical disk driver for use therewith 失效
标题翻译：用于发射具有不同波长的激光束和用于其的光盘驱动器的光学拾取装置
公开(公告)号：US06807140B2
公开(公告)日：2004-10-19
申请号：US09978679
申请日：2001-10-18
申请人： Shogo Horinouchi , Hiroshi Goto , Fuminobu Furukawa
发明人： Shogo Horinouchi , Hiroshi Goto , Fuminobu Furukawa
IPC分类号： G11B700
CPC分类号： G11B7/1362 , G11B7/127 , G11B7/1381 , G11B7/139 , G11B2007/0006 , G11B2007/13727
摘要： In an optical pickup device for emitting at least two laser beams suitable for respective optical recording mediums selectively operated on an optical disk driver so that a signal is read out from and/or recorded onto the selected one of the optical recording mediums, an anamorphic system is arranged to change a cross-sectional shape of one of the laser beams from an oval toward a circle between a divergence point and a confluence point along the one of the laser beam between an upstream common optical paths of the laser beams from the light beam source and a downstream common optical paths of the laser beams toward the objective lens, at which divergence point the laser beams from the upstream common optical path diverge from each other, and at which confluence point the laser beams converge into the downstream common optical path.
摘要翻译：在用于发射适合于在光盘驱动器上有选择地操作的各个光学记录介质的至少两个激光束的光学拾取装置中，使得信号从所选择的一个光学记录介质读出和/或记录在所选择的一个光学记录介质上，变形系统布置成将激光束中的一个的横截面形状从沿着激光束的一个激光束的发散点和汇合点之间的椭圆形的圆形变化到来自光束的激光束的上游公共光路之间源极和激光束朝向物镜的下游公共光路，其中来自上游公共光路的激光束彼此偏离，并且在该汇合点，激光束会聚到下游公共光路中。

2. 发明授权

US06757224B2 Integrated optical component and optical pick-up device 失效
标题翻译：集成光学元件和光学拾取器件
公开(公告)号：US06757224B2
公开(公告)日：2004-06-29
申请号：US09961526
申请日：2001-09-25
申请人： Masaharu Fukakusa , Shogo Horinouchi , Hiroshi Goto , Fuminobu Furukawa
发明人： Masaharu Fukakusa , Shogo Horinouchi , Hiroshi Goto , Fuminobu Furukawa
IPC分类号： G11B700
CPC分类号： G11B7/131 , G11B7/0901 , G11B7/0912 , G11B7/094 , G11B7/0943 , G11B7/123 , G11B7/1353 , G11B7/1356
摘要： Provided are an integrated optical component which can prevent a detection optical system being affected by variation in working temperature, and a pick-up device using the integrated optical component. The integrated optical component for guiding a light beam emitted from a light emitting element to an optical disc, and for separating a required light beam from reflected light from the optical disc, wherein the integrated optical component includes therein a plurality of optical surfaces, and a diffraction grating for extracting light beams required from tracking control and focus control, from the reflected light is formed in any one of the optical surfaces.
摘要翻译：提供了能够防止检测光学系统受到工作温度变化的影响的集成光学部件和使用该集成光学部件的拾取装置。用于将从发光元件发射的光束引导到光盘并且用于将所需光束与来自光盘的反射光分离的集成光学部件，其中所述集成光学部件包括多个光学表面，以及用于提取从跟踪控制和聚焦控制所需的光束的衍射光栅从反射光形成在任何一个光学表面中。

3. 发明授权

US06654320B2 Optical pickup apparatus 失效
标题翻译：光拾取装置
公开(公告)号：US06654320B2
公开(公告)日：2003-11-25
申请号：US09783045
申请日：2001-02-15
申请人： Masaharu Fukakusa , Shogo Horinouchi , Shigeki Takeuchi , Toshihiro Koga , Fuminobu Furukawa
发明人： Masaharu Fukakusa , Shogo Horinouchi , Shigeki Takeuchi , Toshihiro Koga , Fuminobu Furukawa
IPC分类号： G11B700
CPC分类号： G11B7/1356 , G11B7/12 , G11B7/127 , G11B7/131 , G11B7/1353 , G11B7/22
摘要： A small-sized, inexpensive optical pickup apparatus can be assembled with high accuracy. The optical pickup apparatus has a various-purpose semiconductor laser, an integrated optical assembly for guiding outgoing light to an optical disk and for separating reflected light, a light receiver for receiving light and converting the received light into an electrical signal, and a coupling member for retaining a positional relationship among the various-purpose semiconductor laser, the integrated optical assembly, and the light receiver. By using a various-purpose semiconductor laser, the optical pickup apparatus can be made in a small size at low cost, and can be accurately assembled. The apparatus is also capable of accurately and efficiently detecting the optical power of the various-purpose semiconductor laser.
摘要翻译：可以高精度地组装小尺寸，便宜的光学拾取装置。光拾取装置具有各种用途的半导体激光器，用于将出射光引导到光盘并用于分离反射光的集成光学组件，用于接收光并将接收的光转换成电信号的光接收器，以及耦合部件用于保持各种用途半导体激光器，集成光学组件和光接收器之间的位置关系。通过使用各种用途的半导体激光器，可以以低成本将光学拾取装置制成小尺寸，并且可以精确地组装。该装置还能够准确且有效地检测各种用途的半导体激光器的光功率。

4. 发明授权

US07196981B2 Optical disc apparatus 有权
标题翻译：光盘装置
公开(公告)号：US07196981B2
公开(公告)日：2007-03-27
申请号：US10390776
申请日：2003-03-19
申请人： Hideki Yoshinaka , Shogo Horinouchi , Shin Ishibashi , Fuminobu Furukawa
发明人： Hideki Yoshinaka , Shogo Horinouchi , Shin Ishibashi , Fuminobu Furukawa
IPC分类号： G11B7/095
CPC分类号： G11B7/1381 , G11B7/0901 , G11B7/0912 , G11B7/094 , G11B7/122 , G11B7/123 , G11B7/1353 , G11B7/1365 , G11B7/22 , G11B11/10543
摘要： Provided is a focus and tracking control method for an optical pick-up apparatus which is used for recording and reproduction of a small-sized optical disc and which can carry out stable focus control and stable tracking control. A focus control method for an optical pick-up apparatus comprising a light source, an objective lens, a light receiving means having divided four light receiving zones and a polarizing means having divided for lattice zones, characterized in that when the reflected light beam is incident upon the four light receiving zones by way of the four lattice zones, focus control is carried out in accordance with a difference signal between the groups, in the radial direction, of the four light receiving zones which are divided into two groups in the radial direction by the division line in parallel with the tangential direction, respectively through the four lattice zones which are divided into two groups in the tangential direction by a division line in parallel with the radial direction. Further, the tracking control for the pick-up apparatus is characterized in that tracking control is carried out in accordance with a difference signal between two groups in the tangential direction.
摘要翻译：提供了一种用于光学拾取装置的聚焦和跟踪控制方法，其用于小型光盘的记录和再现，并且其可以执行稳定的聚焦控制和稳定的跟踪控制。一种用于光学拾取装置的聚焦控制方法，包括光源，物镜，具有分开的四个光接收区域的光接收装置和用于格栅区域的偏振装置，其特征在于，当反射光束入射时在四个光接收区域之间通过四个格子区域进行聚焦控制，根据沿径向方向分成两组的四个光接收区域的径向组之间的差分信号进行聚焦控制通过与切线方向平行的分割线，分别通过与径向平行的分割线沿切线方向分成两组的四个格子区。此外，拾取装置的跟踪控制的特征在于，根据沿切线方向的两组之间的差分信号执行跟踪控制。

5. 发明授权

US06707615B2 Optical pickup apparatus restricting aberration and optical disc apparatus using the same 失效
标题翻译：限制像差的光学拾取装置和使用其的光盘装置
公开(公告)号：US06707615B2
公开(公告)日：2004-03-16
申请号：US09978596
申请日：2001-10-18
申请人： Taiichi Mori , Hiroshi Goto , Fuminobu Furukawa
发明人： Taiichi Mori , Hiroshi Goto , Fuminobu Furukawa
IPC分类号： G02B2712
CPC分类号： G11B7/127 , G11B7/1376 , G11B7/13922 , G11B2007/0006 , G11B2007/13727
摘要： An optical recording/reproducing apparatus has a light source that radiates a laser beam, an optical detector that detects reflected light from the optical disc, a collimator lens that converts the radiated light of the light source into a fine divergent pencil of rays, and an objective lens that focuses these rays on the optical disc. The collimator lens has a surface that is curved to form a wavefront shape that increasingly corrects a coma aberration of the radiated light in correspondence to a radial distance between the center of the collimator lens and a position at which the radiated light intersects the collimator lens.
摘要翻译：光学记录/再现装置具有照射激光束的光源，检测来自光盘的反射光的光学检测器，将光源的辐射光转换成细分散的光线的准直透镜，以及将这些光线聚焦在光盘上的物镜。准直透镜具有弯曲形成波形形状的表面，其随着准直透镜的中心与辐射光与准直透镜相交的位置之间的径向距离而逐渐校正辐射光的彗形像差。

6. 发明授权

US06577579B1 Disc drive apparatus of slot loading type 失效
标题翻译：槽式装载式盘式驱动装置
公开(公告)号：US06577579B1
公开(公告)日：2003-06-10
申请号：US09506923
申请日：2000-02-18
申请人： Tsuyoshi Kakuta , Yoshinobu Soeda , Junichi Mutoh , Hideru Goto , Nobuo Jikuya , Minoru Nagata , Fuminobu Furukawa
发明人： Tsuyoshi Kakuta , Yoshinobu Soeda , Junichi Mutoh , Hideru Goto , Nobuo Jikuya , Minoru Nagata , Fuminobu Furukawa
IPC分类号： G11B1704
CPC分类号： G11B17/0515 , G11B17/0404
摘要： The invention provides a disc drive apparatus which is suitable for making the apparatus compact, light and thin and make it possible to automatically mount and discharge the disc. The disc drive apparatus has pick-up means and transfer means, and the transfer means has medium driving means, synchronous driving means and positioning means which is brought into contact with an outer peripheral edge of the disc. Accordingly, the disc can be transferred in a direction of a disc surface and can be positioned by the positioning means.
摘要翻译：本发明提供了一种盘式驱动装置，其适用于使装置紧凑，轻薄，并且能够自动安装和排出盘。盘驱动装置具有拾取装置和转印装置，并且转印装置具有介质驱动装置，同步驱动装置和定位装置，其与盘的外围边缘接触。因此，盘可以在盘表面的方向上传送并且可以由定位装置定位。

7. 发明授权

US06984914B2 Motor having characteristic structure in armature and disc apparatus 失效
公开(公告)号：US06984914B2
公开(公告)日：2006-01-10
申请号：US10012043
申请日：2001-12-11
申请人： Tsuyoshi Kakuta , Hirohiko Oowaki , Kensei Fukuda , Fuminobu Furukawa
发明人： Tsuyoshi Kakuta , Hirohiko Oowaki , Kensei Fukuda , Fuminobu Furukawa
IPC分类号： H02K1/06
CPC分类号： G11B19/2009 , H02K1/12 , H02K21/22
摘要： The invention provides a motor which can reduce a generation of a cogging, has a thin size, and can generate a strong torque. In a motor having an armature including a back yoke formed in a cylindrical shape and a wound coil and a magnet formed in a cylindrical shape and magnetized by a plurality of magnetic poles on a cylindrical circumferential surface, the back yoke forms a convex portion protruding from the back yoke toward the magnet in a current switching portion of the coil. The invention further provided a disc apparatus using the motor mentioned above.

8. 发明授权

US07199949B2 Optical pickup device and optical disk device 有权
标题翻译：光拾取装置和光盘装置
公开(公告)号：US07199949B2
公开(公告)日：2007-04-03
申请号：US10673550
申请日：2003-09-30
申请人： Takashi Haruguchi , Junya Aso , Fuminobu Furukawa
发明人： Takashi Haruguchi , Junya Aso , Fuminobu Furukawa
IPC分类号： G02B7/02 , G11B7/00
CPC分类号： G11B7/0933 , G11B7/0935 , G11B7/0956
摘要： The present invention provides an optical pickup device comprising a light condensing means for condensing light emergent from a light source to an optical disk, a light condensing holder on which the light condensing means is mounted, a suspension holder for elastically supporting the light condensing holder, a focus coil mounted on the light condensing holder, a tracking coil mounted on the light condensing holder, and a magnetic field impression means for impressing a magnetic field upon the focus coil and the tracking coil, wherein the tracking coil is composed of a first to a third tracking coil portion combined with each other.
摘要翻译：本发明提供了一种光拾取装置，其包括用于将从光源发出的光聚光到光盘的聚光装置，安装有聚光装置的聚光保持器，用于弹性地支撑聚光保持器的悬架保持器，安装在聚光保持器上的聚焦线圈，安装在聚光架上的跟踪线圈和用于在聚焦线圈和跟踪线圈上施加磁场的磁场印模装置，其中跟踪线圈由第一至第第三跟踪线圈部分彼此组合。

9. 发明申请

US20060114779A1 Optical disk apparatus 审中-公开
公开(公告)号：US20060114779A1
公开(公告)日：2006-06-01
申请号：US11334069
申请日：2006-01-18
申请人： Yasuhiro Wada , Keisuke Umeda , Kenji Utsunomiya , Takayuki Oie , Fuminobu Furukawa
发明人： Yasuhiro Wada , Keisuke Umeda , Kenji Utsunomiya , Takayuki Oie , Fuminobu Furukawa
IPC分类号： G11B5/09
CPC分类号： G11B19/04 , G11B20/10 , G11B2020/10814
摘要： An optical disk apparatus, which decreases probability of impossibility of correcting an error in reading, is provided, where the error results from deviation of a writing-resuming position in resumption of writing. When an amount of data in a buffer becomes not more than a given amount of data, a buffer-underrun-detecting-circuit judges that the data are in a buffer-underrun-condition. According to the judgement, a writing-interrupting-and-resuming-circuit detects an end position of the last pit for writing, and the position is stored in a time-information-memory, and the optical disk apparatus becomes in a pause condition of writing. When the buffer-underrun-condition is avoided, the optical disk apparatus releases the pause condition of writing, and reads the position of interruption of writing from the time-information-memory, and then synchronizes data written on an optical disk and the data for writing. After that, writing is resumed with a given interval formed between the data written and the data for writing.

10. 发明授权

US6084847A Light pickup 失效
标题翻译：光拾取
公开(公告)号：US6084847A
公开(公告)日：2000-07-04
申请号：US382201
申请日：1999-08-23
申请人： Kouki Kojima , Fuminobu Furukawa
发明人： Kouki Kojima , Fuminobu Furukawa
IPC分类号： G11B7/00 , G11B7/12 , G11B7/135
CPC分类号： G11B7/1275 , G11B7/12 , G11B7/1374 , G11B2007/0006
摘要： An optical pickup capable of recording or reproducing information from optical disks having different recording densities includes a first optical unit having a light source which emits rays having a first wavelength for DVDs and a first light sensor which detects reflected rays, a second optical unit having a light source which emits rays having a second wavelength for CDs and a second light sensor which detects reflected rays, a beam splitter which directs the rays having the first wavelength and the rays having the second wavelength along substantially the same optical axis, and directs reflected rays from an optical disk to the first light sensor and the second light sensor, and an objective lens which has a numerical aperture (NA) of 0.6 or more, a focal length of 2.5 mm or less, an effective diameter of incidence of 3.0 mm or less and a working distance of 1.2 mm or less. The light pickup as a whole has a thickness of 7.5 mm or less as measured from a bottom surface of the optical disk. The light pickup is capable of reproducing information from optical disks having different recording densities, is composed of a small number of parts, and is compact and thin.
摘要翻译：能够从具有不同记录密度的光盘记录或再现信息的光学拾取器包括具有发射用于DVD的第一波长的光的光源和检测反射光线的第一光传感器的第一光学单元，具有发射用于CD的第二波长的光的光源和检测反射光线的第二光传感器;将具有第一波长的光和基本上相同的光轴的第二波长的光引导的分束器，并且引导反射光线从光盘到第一光传感器和第二光传感器，以及物镜，其数值孔径（NA）为0.6以上，焦距为2.5mm以下，有效入射直径为3.0mm，较小，工作距离为1.2mm以下。光拾取器整体上从光盘的底面测得的厚度为7.5mm以下。光拾取器能够从具有不同记录密度的光盘再现信息，由少量部件组成，并且紧凑而薄。

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