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1. 发明授权

US5260927A Optical pickup device for recordable disc and dichroic mirror 失效
标题翻译：用于可记录光盘和分色镜的光学拾取装置
公开(公告)号：US5260927A
公开(公告)日：1993-11-09
申请号：US816733
申请日：1992-01-03
申请人： Teruaki Higashihara , Yoji Ishii , Kiyoshi Ohsato
发明人： Teruaki Higashihara , Yoji Ishii , Kiyoshi Ohsato
IPC分类号： G02B27/28 , G11B7/00 , G11B7/0045 , G11B7/135 , G11B11/10 , G11B11/105
CPC分类号： G11B7/1362 , G02B27/283 , G11B11/10543 , G11B7/1365
摘要： Laser light beams from first and second laser light sources 11 and 12 having different wavelengths are synthesized by a dichroic mirror 16 and irradiated on a magneto-optical disc 20 as a recordable disc and the reflected light is separated into the laser light of the first and second wavelengths. In respect of the laser light of the first wavelength, the phase difference between the P- and S-polarization components produced by the dichroic mirror 16 is compensated by a phase compensation plate 32 and the P-and S-polarization components are separated from each other by a polarization beam splitter 36 so as to be received by photodetector elements 37 and 38, respectively. Such dichroic mirror 16 is used in which the difference between the minimum transmittance in a working range of the laser light of the first wavelength and the maximum transmittance in a working range of the laser light of the second wavelength is 90% or higher for reducing changes in the phase difference between the P- and S-polarization components. Optimum signals may be obtained at the photodetector elements 37 and 38 while high wavelength separation characteristics are maintained.

2. 再颁专利

USRE40371E1 Optical disc recording/reproduction apparatus and method 有权
标题翻译：光盘记录/再现装置及方法
公开(公告)号：USRE40371E1
公开(公告)日：2008-06-10
申请号：US09726436
申请日：2000-12-01
申请人： Isao Ichimura , Fumisada Maeda , Kenji Yamamoto , Kiyoshi Ohsato , Toshio Watanabe , Akira Suzuki
发明人： Isao Ichimura , Fumisada Maeda , Kenji Yamamoto , Kiyoshi Ohsato , Toshio Watanabe , Akira Suzuki
IPC分类号： G11B7/00
CPC分类号： B82Y10/00 , G11B7/0935 , G11B7/1374 , G11B7/24 , G11B11/10543 , G11B11/10576 , G11B2007/13727
摘要： An optical disc recording/reproduction apparatus for recording and/or reproducing a data by applying a beam from an optical head unit through a substrate onto/from a recording layer of the optical disc through, wherein the substrate of the optical disc is 0.3 mm or below; the optical head unit comprises: an objective lens for converging an incident beam and emitting the beam toward the optical disc; a forward lens for converging the beam introduced through the objective lens and applying the beam to the optical disc; a lens holder where the objective lens and the forward lens are fixed; and an actuator for driving the objective lens and the forward lens as a unitary block and controlling at least focusing, the objective lens and the forward lens having a total numerical aperture of 0.8 or above.
摘要翻译：一种光盘记录/再现装置，用于通过将来自光学头单元的光束通过衬底施加到/从光盘的记录层通过光盘的记录层而记录和/或再现数据，其中光盘的基板为0.3mm或下面; 光头单元包括：用于会聚入射光束并将光束朝向光盘发射的物镜; 用于会聚通过物镜引入的光束并将光束施加到光盘的前向透镜; 固定有物镜和前透镜的透镜保持架; 以及用于将物镜和前透镜驱动为整体块并且至少控制聚焦的致动器，物镜和前透镜具有0.8或更高的总数值孔径。

3. 发明授权

US06366543B2 Optical pickup for discriminating between and reading different types of optical discs 失效
标题翻译：用于识别和读取不同类型的光盘的光学拾取器
公开(公告)号：US06366543B2
公开(公告)日：2002-04-02
申请号：US09819794
申请日：2001-03-29
申请人： Kamon Uemura , Kiyoshi Ohsato , Akio Yamakawa , Masamichi Utsumi
发明人： Kamon Uemura , Kiyoshi Ohsato , Akio Yamakawa , Masamichi Utsumi
IPC分类号： G11B7095
CPC分类号： G11B19/128 , G11B7/0901 , G11B7/1372 , G11B7/1381 , G11B7/139 , G11B19/12 , G11B2007/0006 , G11B2007/0013
摘要： An optical pickup including a light source for radiating a light beam, a diffraction element for separating a light beam radiated from the light source into at least three beams, namely a main beam and two side beams, an objective lens for converging the light beams separated by the diffraction element on a signal recording surface of the optical recording medium, a light receiving unit having a four-segment first light receiving portion for receiving the main beam reflected by the recording surface of the optical recording medium and second and third light receiving portions arranged on both sides of the first light receiving portion for receiving the side beams reflected by the recording surface of the optical recording medium, and a calculation unit for generating a first tracking signal based on respective outputs of the first light receiving portion and for generating a second tracking signal based on outputs of the second and third light receiving portions.
摘要翻译：一种包括用于照射光束的光源的光学拾取器，用于将从光源辐射的光束分成至少三个光束，即主光束和两个侧光束的衍射元件，用于会聚分离的光束的物镜通过光记录介质的信号记录表面上的衍射元件，具有用于接收由光记录介质的记录表面反射的主光束的四段第一光接收部分和第二和第三光接收部分的光接收单元布置在第一光接收部分的两侧，用于接收由光记录介质的记录表面反射的侧光束;以及计算单元，用于基于第一光接收部分的各个输出产生第一跟踪信号，基于第二和第三光接收部分的输出的第二跟踪信号。

4. 发明授权

US06353592B1 Optical recording medium and optical disk device 有权
标题翻译：光记录介质和光盘设备
公开(公告)号：US06353592B1
公开(公告)日：2002-03-05
申请号：US09242911
申请日：1999-06-09
申请人： Toshiyuki Kashiwagi , Tetsuhiro Sakamoto , Kiyoshi Ohsato
发明人： Toshiyuki Kashiwagi , Tetsuhiro Sakamoto , Kiyoshi Ohsato
IPC分类号： G11B724
CPC分类号： G11B7/252 , G11B7/0956 , G11B7/24053 , G11B7/24056 , G11B7/24067 , G11B7/2433 , G11B7/2533 , G11B7/2534 , G11B7/2542 , G11B7/2548 , G11B7/2585 , G11B7/26 , G11B2007/24304
摘要： The present invention provides an optical recording medium including a recording layer and a light-transmitting layer successively formed on one side of a substrate, so that a light is applied from the side of this light-transmitting layer for performing an information recording and/or reproduction. On the opposite side of the substrate not having the light-transmitting layer, a water-proof film consisting of at least one layer is formed. This suppresses the skew, enabling to improve the information recording and/or reproduction characteristics for a higher recording density. Furthermore, if the light-transmitting layer has a thickness t=3 to 177 micrometers in an information signal section of the recording medium, and a thickness fluctuation &Dgr;t ≦±5.26 (&lgr;/NA4) micrometers (wherein NA is a numerical aperture and &lgr; is a wavelength of the recording/reproduction optical system), it is possible to realize a high NA and a high capacity.
摘要翻译：本发明提供了一种光记录介质，其包括依次形成在基板的一侧的记录层和透光层，使得从该透光层的侧面施加光以进行信息记录和/或再生产。在不具有透光层的基板的相反侧，形成由至少一层构成的防水膜。这抑制了偏斜，使得能够改善用于更高记录密度的信息记录和/或再现特性。此外，如果透光层在记录介质的信息信号部分中的厚度t = 3至177微米，并且厚度波动ΔTTAt<=±5.26（lambd / NA4）微米（其中NA是数值孔径，羔羊是记录/再现光学系统的波长），可以实现高NA和高容量。

5. 发明授权

US4612437A Focussing error detecting apparatus for use in an optical disc reproducing device, an auto-focus camera or image-pickup device 失效
标题翻译：用于光盘再现装置，自动对焦照相机或图像拾取装置的聚焦误差检测装置
公开(公告)号：US4612437A
公开(公告)日：1986-09-16
申请号：US577838
申请日：1984-02-07
申请人： Kiyoshi Ohsato
发明人： Kiyoshi Ohsato
IPC分类号： G03B13/36 , G02B7/28 , G02B7/32 , G11B7/09 , G11B7/12
CPC分类号： G11B7/0912 , G02B7/32 , G11B7/0916
摘要： A focussing error detecting apparatus comprises a compound lens and a photodetector, in which the compound lens has first and second lens regions having different back focal lengths separated by a boundary plane which includes the optical axis of light incident on the compound lens. The photodetector has its photodetecting face positioned on the optical axis of the light between the focal points of the two lens regions, and includes first and second photodetecting elements for receiving light passed through the first lens region at its outer and inner sections with respect to the boundary plane, respectively, and third and fourth photodetecting elements for receiving light passed through the second lens region at its outer and inner sections respectively. A focussing error signal is produced from the difference between the sum of signals from the first and fourth photodetecting elements and the sum of signals from the second and third photodetecting elements.
摘要翻译：一种聚焦误差检测装置，包括复合透镜和光电检测器，其中复合透镜具有由包括入射在复合透镜上的光的光轴的边界面分隔的不同后焦距的第一和第二透镜区域。光检测器具有位于两透镜区域的焦点之间的光的光轴上的受光面，并且包括第一和第二光电检测元件，用于接收在其外部和内部相对于第一透镜区域通过第一透镜区域的光分别用于接收在其外部和内部部分穿过第二透镜区域的光的第三和第四光电检测元件。根据来自第一和第四光电检测元件的信号之和与来自第二和第三光电检测元件的信号之和的差产生聚焦误差信号。

6. 发明授权

US4593386A Optical disc player with improved tracking control 失效
标题翻译：光盘播放器具有改进的跟踪控制
公开(公告)号：US4593386A
公开(公告)日：1986-06-03
申请号：US511912
申请日：1983-07-08
申请人： Shinichiro Kuwabara , Kiyoshi Ohsato , Mikio Sugiki
发明人： Shinichiro Kuwabara , Kiyoshi Ohsato , Mikio Sugiki
IPC分类号： G11B7/09 , G11B7/095 , G11B7/13
CPC分类号： G11B7/0941 , G11B7/0956
摘要： In an optical disc player in which a reading light beam is caused to impinge on an optical disc having a record track formed with an alignment of geometric variations such as a plurality of pits provided in response to information to be modulated in intensity by the record track and a photodetector is provided for detecting the reading light beam coming from the optical disc to generate an output varying in response to the variations in intensity of the detected reading light beam; there are provided a first circuit for producing a reproduced information signal having level variations representing the geometric variations and a tracking error signal which may have level variations depending on the size of each segment of the geometric variations on the strength of the output of the photodetector, a second circuit for detecting the duration of a portion corresponding to each segment of the geometric variations of the reproduced information signal or output of the photodetector and extracting selectively the level of the tracking error signal whenever the detected duration is measured within a predetermined time range so as to produce a modified tracking error signal having the extracted level, and a control circuit for performing tracking control in relation to the reading light beam in response to the modified tracking error signal.
摘要翻译：在其中使读取光束撞击在具有记录轨道的光盘上的光盘中，所述光盘具有形成为几何变化的对准的记录轨道，所述记录轨迹形成为响应由记录轨道强度调制的信息而提供的多个凹坑并且提供光电检测器，用于检测来自光盘的读取光束，以产生响应于检测到的读取光束的强度变化而变化的输出; 提供了一种用于产生具有表示几何变化的电平变化的再现信息信号的第一电路和可能具有取决于光电检测器的输出强度的几何变化的每个段的尺寸的电平变化的跟踪误差信号，第二电路，用于检测对应于再现信息信号或输出的光电检测器的几何变化的每个段的部分的持续时间，并且每当在预定时间范围内测量检测到的持续时间时，选择性地提取跟踪误差信号的电平以产生具有所提取的电平的修改的跟踪误差信号，以及用于响应于修改的跟踪误差信号执行与读取光束相关的跟踪控制的控制电路。

7. 发明授权

US5841513A Apparatus for reproducing sound signals recorded on a motion picture film with digital sound track 失效
标题翻译：用于再现用数字声轨记录在电影胶片上的声音信号的装置
公开(公告)号：US5841513A
公开(公告)日：1998-11-24
申请号：US847776
申请日：1997-04-24
申请人： Shunji Yoshimura , Yoshiyuki Akiyama , Kiyoshi Ohsato , Isao Ichimura , Toshio Watanabe , Shinji Katsuramoto
发明人： Shunji Yoshimura , Yoshiyuki Akiyama , Kiyoshi Ohsato , Isao Ichimura , Toshio Watanabe , Shinji Katsuramoto
IPC分类号： G03B31/02 , G11B7/00 , G11B7/003 , G11B20/00 , G11B20/10 , G11B20/12 , G11B20/14 , G11B20/18 , G11B27/28 , G11B27/30 , H04R5/00
CPC分类号： G11B20/10 , G03B31/02 , G11B20/10527 , G11B20/1261 , G11B20/1426 , G11B20/1813 , G11B27/30 , G11B7/0032 , H04R5/00 , G11B20/00007
摘要： A device for recording/reproducing a digital pattern as a sound track of a cinefilm is disclosed. The device includes a cinefilm 1 having an image recording area 2 in which an image is recorded, a perforation section 3 for film feed and digital pattern data recording areas 5 and 6 provided in the vicinity of the perforation section 3. Plural channels of audio data are recorded as the digital patterns in the digital pattern data recording areas.
摘要翻译：公开了一种用于记录/再现数字图形作为电影卷的声轨的装置。该装置包括具有其中记录图像的图像记录区域2的电影卷1，用于胶片馈送的穿孔部分3和设置在穿孔部分3附近的数字图案数据记录区域5和6.多个声道数据被记录为数字图案数据记录区域中的数字图案。

8. 发明授权

US5786947A Optical pickup device with a floating element 失效
标题翻译：具有浮动元件的光学拾取装置
公开(公告)号：US5786947A
公开(公告)日：1998-07-28
申请号：US834147
申请日：1997-04-14
申请人： Fumisada Maeda , Isao Ichimura , Kenji Yamamoto , Kiyoshi Ohsato , Toshio Watanabe
发明人： Fumisada Maeda , Isao Ichimura , Kenji Yamamoto , Kiyoshi Ohsato , Toshio Watanabe
IPC分类号： G11B7/12 , G11B7/135 , G02B7/02
CPC分类号： G11B7/13922 , G11B7/122 , G11B7/1365 , G11B7/1374 , G11B2007/13727
摘要： An optical pickup device for condensing the light from a light source on a signal recording surface of an optical recording medium, such as an optical disc. A semi-spherical lens of the optical pickup device has a surface 9b facing an optical disc 20 and has a pre-set refractive index. The optical pickup device also has a slider 12 adapted for securing the lens 9 and for being in sliding contact with an optical disc 20, and a spring plate 13 adapted for thrusting and supporting the slider in sliding contact with the optical disc 20. With the optical pickup device, high density reproduction may be realized, while the tolerance value for warping during disc molding or the tolerance value for warping due to moisture absorption may be increased. In addition, the production yield and the degree of freedom in selecting the disc materials may be improved.
摘要翻译：一种光拾取装置，用于将来自光源的光聚焦在诸如光盘的光记录介质的信号记录表面上。光学拾取装置的半球形透镜具有面向光盘20的表面9b并且具有预设折射率。光学拾取装置还具有适于固定透镜9并与光盘20滑动接触的滑动件12，以及用于推压和支撑滑动件以与光盘20滑动接触的弹簧板13。可以实现光拾取装置的高密度再现，而盘成型时的翘曲的公差值或由于吸湿引起的翘曲的公差值可能增加。此外，可以提高选择盘材料的生产率和自由度。

9. 发明授权

US5559766A Rotary drum tape recording apparatus with controlling optical recording tracks using stored results of scanning of reference tracks 失效
标题翻译：旋转鼓带记录装置，具有使用存储的参考轨道扫描结果控制光记录轨道
公开(公告)号：US5559766A
公开(公告)日：1996-09-24
申请号：US500028
申请日：1995-07-10
申请人： Takashi Nakao , Kiyoshi Ohsato , Yoshiteru Kamatani , Tatsuya Narahara , Tadashi Ozue
发明人： Takashi Nakao , Kiyoshi Ohsato , Yoshiteru Kamatani , Tatsuya Narahara , Tadashi Ozue
IPC分类号： G11B7/09 , G11B7/003 , G11B7/0033
CPC分类号： G11B7/0031 , G11B7/0901 , G11B7/0033
摘要： An optical recording method and an optical recording apparatus enable recording information on recording tracks substantially corresponding to ideal reference tracks, on an optical recording medium without preformatted tracks. The optical recording medium is scanned by a rotating optical scanning system using a scanning light beam emitted by an external light source to record information on the optical recording medium. Prior to recording the information on the optical recording medium, information recorded on a reference track recording medium provided with ideal reference tracks is reproduced in a tracking control mode to acquire tracking control data and the tracking control data is stored in a waveform memory. In recording information on the optical recording medium, the rotating optical scanning system is controlled on the basis of the previously stored tracking control data so that the scanning spot traces recording tracks corresponding to the ideal reference tracks.
摘要翻译：光学记录方法和光学记录装置使得能够在没有预格式化轨道的光学记录介质上将基本上对应于理想基准轨道的记录轨道上的信息进行记录。光记录介质通过使用由外部光源发射的扫描光束的旋转光学扫描系统进行扫描，以在光学记录介质上记录信息。在光记录介质上记录信息之前，以跟踪控制模式再现记录在具有理想基准轨道的基准轨道记录介质上的信息，以获取跟踪控制数据，并且将跟踪控制数据存储在波形存储器中。在光记录介质上记录信息时，基于先前存储的跟踪控制数据来控制旋转光扫描系统，使得扫描点跟踪对应于理想参考轨道的记录道。

10. 发明授权

US5191571A Tracking control method and apparatus for an optical disc system 失效
标题翻译：跟踪光盘系统的控制方法和装置
公开(公告)号：US5191571A
公开(公告)日：1993-03-02
申请号：US705492
申请日：1991-05-24
申请人： Atsushi Fukumoto , Kiyoshi Ohsato
发明人： Atsushi Fukumoto , Kiyoshi Ohsato
IPC分类号： G11B7/095 , G11B7/09
CPC分类号： G11B7/0903 , G11B7/0943
摘要： n pairs of light beams are applied to an optical disc to form a plurality of beam spots thereon which are offset by 1/2n of a track pitch p, and n signals which are shifted p/2n in spatial phase are generated from detected output signals indicative of light beams reflected from the beam spots. These n signals are multiplied to produce a tracking control signal whose spatial period is 1/n of the track pitch p. Alternatively, the optical disc has n pairs of wobbling pits or servo pits which are offset by 1/2n of a tracking pitch p are disposed on an optical disc, and the n pairs of servo pits are scanned by a light beam to produce n signals that are shifted p/2n in spatial phase. The tracking control method is effective to effect tracking control on an optical disc whose recording tracks are arranged at a high density that exceeds the spatial cutoff frequency of an optical system of conventional nature used with the tracking control method.

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