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51. 发明授权

US08416656B2 Reproducing method and reproducing apparatus 失效
标题翻译：再现方法和再现装置
公开(公告)号：US08416656B2
公开(公告)日：2013-04-09
申请号：US13459357
申请日：2012-04-30
申请人： Noriaki Nishi
发明人： Noriaki Nishi
IPC分类号： G11B7/00
CPC分类号： G11B7/0901 , G11B7/0903 , G11B7/24073 , G11B2007/0013
摘要： A reproducing method includes: irradiating a laser spot for servo to which astigmatism making up a generally 45-degree angle in the tangential direction of an information recording track has been applied, and one or more laser spots for reproduction, onto a recording medium where a track group is formed with multiple information recording tracks adjacent with a narrower track pitch than a track pitch equivalent to optical cut-off, and also where a track group pitch is wider than the track pitch equivalent to optical cut-off; and subjecting one or more laser spots for reproduction to on-track control as to one of the information recording tracks by taking a tangential push pull signal obtained from reflected light information of the laser spot for servo as a tracking error signal, and performing tracking servo control using this tracking error signal, and reproducing data from the reflected light information thereof.
摘要翻译：一种再现方法包括：对已经施加了信息记录轨迹的切线方向上构成大致45度角的像散的伺服照射激光点和用于再现的一个或多个激光点到记录介质上，其中轨道组形成有与相对于光学截止的轨道间距相邻的多个信息记录轨道，并且轨道组间距比等于光学截止的轨道间距宽; 并且通过将从伺服用激光光斑的反射光信息获得的切向推挽信号作为跟踪误差信号，对一个信息记录道进行一次或多次激光点的再现，对其中一个信息记录轨道进行轨道控制，并执行跟踪伺服使用该跟踪误差信号进行控制，以及从其反射光信息再现数据。

52. 发明申请

US20130010580A1 RECORDING APPARATUS AND RECORDING METHOD 有权
标题翻译：记录装置和记录方法
公开(公告)号：US20130010580A1
公开(公告)日：2013-01-10
申请号：US13527838
申请日：2012-06-20
申请人： Tomoharu Mukasa , Yoshiyuki Urakawa , Noriaki Nishi , Junichi Horigome
发明人： Tomoharu Mukasa , Yoshiyuki Urakawa , Noriaki Nishi , Junichi Horigome
IPC分类号： G11B7/09
CPC分类号： G11B7/0901 , G11B2007/0013
摘要： Provided is a recording apparatus including a light irradiation and receiving unit configured to irradiate recording light for performing mark recording to a recording layer and an adjacent servo light for an adjacent track servo onto an optical disc recording medium having the recording layer through a common objective lens, and to receive reflected light from the recording layer of the adjacent servo light, a tracking mechanism configured to drive the objective lens in a tracking direction which is the disc radial direction, a tracking servo signal generation unit configured to obtain a corrected servo error signal as a servo error signal based on a light receiving signal for the adjacent servo light, and to generate a tracking servo signal using the corrected servo error signal, and a tracking driving unit configured to drive the tracking mechanism based on the tracking servo signal.
摘要翻译：提供了一种记录装置，其包括光照射和接收单元，其被配置为通过公共物镜将用于执行标记记录的记录光照射到具有记录层的光盘记录介质上的记录层和相邻的磁道伺服的相邻伺服光并且接收来自相邻伺服光的记录层的反射光，跟踪机构，被配置为沿着作为盘径向的跟踪方向驱动物镜;跟踪伺服信号生成单元，被配置为获得校正后的伺服误差信号作为基于相邻伺服光的光接收信号的伺服误差信号，并且使用校正后的伺服误差信号产生跟踪伺服信号，以及跟踪驱动单元，其被配置为基于跟踪伺服信号来驱动跟踪机构。

53. 发明申请

US20120063287A1 OBJECTIVE LENS, OPTICAL PICKUP, AND OPTICAL DRIVE DEVICE 失效
标题翻译：目标镜头，光学拾取和光学驱动装置
公开(公告)号：US20120063287A1
公开(公告)日：2012-03-15
申请号：US13225764
申请日：2011-09-06
申请人： Kenji Yamamoto , Noriaki Nishi , Kimihiro Saito
发明人： Kenji Yamamoto , Noriaki Nishi , Kimihiro Saito
IPC分类号： G11B7/135 , G02B7/02
CPC分类号： G11B7/1374 , G11B7/0956 , G11B7/13927 , G11B2007/0009
摘要： Provided is an objective lens, which is provided in an optical pickup including a spherical aberration correction mechanism which performs a spherical aberration correction with respect to laser light applied to a recording layer of an optical recording medium, having the recording layer on which information can be recorded at a plurality of positions in a depth direction, via the objective lens, and a tilt correction unit which varies a lens tilt angle which is a tilt angle of the objective lens, thereby performing a tilt correction.
摘要翻译：提供一种物镜，其设置在包括球面像差校正机构的光学拾取器中，所述球面像差校正机构对于施加到光学记录介质的记录层的激光进行球面像差校正，其具有信息可以在其上的记录层通过物镜在深度方向上的多个位置记录，以及倾斜校正单元，其改变作为物镜的倾斜角度的透镜倾斜角度，从而进行倾斜校正。

54. 发明申请

US20110134742A1 PICKUP APPARATUS, OPTICAL RECORDING AND REPRODUCTION APPARATUS, AND RECORDING AND REPRODUCTION METHOD 失效
标题翻译： PICKUP装置，光学记录和再现装置以及记录和再现方法
公开(公告)号：US20110134742A1
公开(公告)日：2011-06-09
申请号：US12951967
申请日：2010-11-22
申请人： Norihiro Tanabe , Kimihiro Saito , Takahiro Miura , Yojiro Sumi , Noriaki Nishi
发明人： Norihiro Tanabe , Kimihiro Saito , Takahiro Miura , Yojiro Sumi , Noriaki Nishi
IPC分类号： G11B7/00
CPC分类号： G11B7/1369 , G11B7/0953 , G11B7/1356 , G11B7/1365 , G11B7/13927
摘要： A pickup apparatus includes a light source; a light separator; an object lens that concentrates the light which penetrated the light separator on the optical recording medium; a movable lens; and a light sensing element that receives the reflected light from the optical recording medium separated by the light separator, wherein a coma aberration generated by the transverse shift of the object lens is corrected by a coma aberration which is generated by the deviation of a spherical aberration generated in an optical path from the light source to the object lens and a spherical aberration generated in an optical path from the object lens to a light concentration position on the optical recording medium which are due to the transverse shift.
摘要翻译：拾取装置包括光源; 光分离器将透过光分离器的光集中在光记录介质上的物镜; 可移动镜头; 以及光接收来自由光分离器分离的光记录介质的反射光的光感测元件，其中由透镜的横向偏移产生的彗形像差由通过球面像差的偏差产生的彗差来校正在从光源到物镜的光路中产生的球面像差，以及由于横向偏移而从物镜到光记录介质上的光聚集位置的光路中产生的球面像差。

55. 发明授权

US07889621B2 Objective lens device, optical pickup device, optical-disc driving device and driving method of objective lens 失效
标题翻译：物镜装置，光学拾取装置，光盘驱动装置以及物镜的驱动方法
公开(公告)号：US07889621B2
公开(公告)日：2011-02-15
申请号：US11871420
申请日：2007-10-12
申请人： Noriaki Nishi , Kenji Yamamoto , Takahiro Miyagi , Fumiaki Nakano
发明人： Noriaki Nishi , Kenji Yamamoto , Takahiro Miyagi , Fumiaki Nakano
IPC分类号： G11B7/00
CPC分类号： G02B7/023 , G02B7/021 , G11B7/0933 , G11B7/0935 , G11B7/121 , G11B7/123 , G11B7/1275 , G11B7/1374 , G11B7/22 , G11B2007/0006
摘要： An objective lens device includes: a first objective lens having a first numerical aperture, which can condense light into a disc-shaped first optical recording medium including a first cover layer of first thickness; a second objective lens having a second numerical aperture which is smaller than the first numerical aperture, which can condense light into a disc-shaped second optical recording medium including a second cover layer of second thickness which is thicker than the first thickness; a third objective lens having a third numerical aperture which is smaller than the second numerical aperture, which can condense light into a disc-shaped third optical recording medium including a third cover layer of third thickness which is thicker than the second thickness; and a lens holder configured to integrally hold the first, second, and third objective lenses.
摘要翻译：一种物镜装置，包括：具有第一数值孔径的第一物镜，其可以将光冷凝成包括第一厚度的第一覆盖层的盘状第一光学记录介质; 具有小于第一数值孔径的第二数值孔径的第二物镜，其可以将光冷凝成包括比第一厚度厚的第二厚度的第二覆盖层的盘形第二光学记录介质; 具有小于第二数值孔径的第三数值孔径的第三物镜，其可以将光冷凝成包括第三厚度比第二厚度厚的第三覆盖层的盘状第三光学记录介质; 以及透镜保持器，其构造成一体地保持第一，第二和第三物镜。

56. 发明授权

US07675834B2 Optical pickup for three different types of optical discs and recording and/or reproducing apparatus using same 失效
标题翻译：用于三种不同类型的光盘的光学拾取器和使用其的记录和/或再现装置
公开(公告)号：US07675834B2
公开(公告)日：2010-03-09
申请号：US11113037
申请日：2005-04-25
申请人： Kenji Yamamoto , Katsutoshi Sato , Noriaki Nishi , Midori Kanaya , Shinya Makita
发明人： Kenji Yamamoto , Katsutoshi Sato , Noriaki Nishi , Midori Kanaya , Shinya Makita
IPC分类号： G11B7/135
CPC分类号： G11B7/1376 , G11B7/13927 , G11B2007/0006
摘要： An optical pickup including a light source unit having a first radiating unit for radiating a light beam of a first wavelength, a second radiating unit for radiating a light beam of a second wavelength and a third radiating unit for radiating a light beam of a third wavelenght, a collimator lens having different focal lengths dependent on the first to third wavelengths, and an objective lens for condensing light beams, radiated from the first to third radiating units, on an information recording surface of an optical disc, and a recording and/or reproducing apparatus employing the optical pickup, are disclosed. The optical pickup and the recording and/or reproducing apparatus are used for recording and/or reproducing the information for plural sorts of the information recording medium of different formats. Certain components of the optical pickup are used in common for the different light beams to reduce the size of the device as well as to correct the spherical aberration.
摘要翻译：一种光拾取器，包括具有用于照射第一波长的光束的第一辐射单元的光源单元，用于辐射第二波长的光束的第二辐射单元和用于辐射第三波长的光束的第三辐射单元，具有取决于第一至第三波长的不同焦距的准直透镜，以及用于将从第一至第三辐射单元辐射的光束聚光在光盘的信息记录表面上的物镜，以及记录和/或公开了采用光学拾取器的再现装置。光拾取器和记录和/或再现装置用于记录和/或再现用于多种不同格式的信息记录介质的信息。对于不同的光束，光拾取器的某些部件共同使用以减小装置的尺寸以及校正球面像差。

57. 发明申请

US20070008853A1 Optical disc device, optical pickup control method and optical disc discriminating method 失效
标题翻译：光盘装置，光学拾取控制方法和光盘识别方法
公开(公告)号：US20070008853A1
公开(公告)日：2007-01-11
申请号：US10569370
申请日：2005-07-11
申请人： Takashi Nakao , Noriaki Nishi
发明人： Takashi Nakao , Noriaki Nishi
IPC分类号： G11B7/00
CPC分类号： G11B7/13925 , G11B7/0903 , G11B7/0908 , G11B7/0945 , G11B7/126 , G11B7/131 , G11B19/127 , G11B2007/0006 , G11B2007/0013
摘要： In the present invention, an optical pick-up (4) applies an optical beam to an optical disc (2) on which one or more information recording layers (20A) and (20B) are laminated in the direction of thickness through an objective lens (34) and detects a reflected light from one of the information recording layers laminated on the optical disc. A first photodetecting part (81) for detecting the reflected light from the one information recording layer and a second photodetecting part (82) composed of one or more light receiving surfaces for detecting a stray light from other information recording layers are mounted on a light receiving element (52). The number of the information recording layers laminated on the optical disc (2) is discriminated on the basis of the intensity of the stray light detected by the second photodetecting part (82). The optical pick-up (4) is controlled in accordance with the discriminated number of the information recording layers before a focus is controlled.
摘要翻译：在本发明中，光学拾取器（4）将光束施加到光盘（2）上，其中一个或多个信息记录层（20A）和（20B）在厚度方向上通过一个物镜（34），并检测层叠在光盘上的信息记录层之一的反射光。用于检测来自一个信息记录层的反射光的第一光电检测部分（81）和由用于检测来自其它信息记录层的杂散光的一个或多个光接收表面组成的第二光电检测部分（82）安装在光接收元件（52）。基于由第二受光部（82）检测到的杂散光的强度来判别层叠在光盘（2）上的信息记录层的数量。在控制焦点之前，根据所识别的信息记录层的数量来控制光学拾取器（4）。

58. 发明申请

US20060007812A1 Optical pickup device, recorder and/or reproducer 失效
标题翻译：光学拾取装置，记录器和/或再现器
公开(公告)号：US20060007812A1
公开(公告)日：2006-01-12
申请号：US11168477
申请日：2005-06-29
申请人： Noriaki Nishi , Kenji Yamamoto , Takashi Kobayashi , Katsuhiro Shindo , Yuhei Kobayashi
发明人： Noriaki Nishi , Kenji Yamamoto , Takashi Kobayashi , Katsuhiro Shindo , Yuhei Kobayashi
IPC分类号： G11B7/00
CPC分类号： G11B7/1374 , G11B7/123 , G11B7/1275 , G11B7/13925 , G11B2007/0006
摘要： The present invention provides an optical pickup device which realizes an optical system having an optical magnification suitable for each disc format between three optical discs and a light emitting means for emitting a laser beam having a wavelength corresponding to each disc in the optical system of the optical pickup for recording and/or reproducing an information signal to the optical discs and which prevents the number of components from being increased to simplify the composition of the optical system, thereby preventing the length of an optical path from being lengthened, the optical pickup from being increased in size. The optical pickup device has a first light emitting unit for emitting a laser beam having a first wavelength and a laser beam having a second wavelength, a second light emitting unit for emitting a laser beam having a third wavelength, a first collimator lens for transmitting the laser beam having the first wavelength and the laser beam having the second wavelength, a second collimator lens for transmitting the laser beam having the third wavelength, a first objective lens for transmitting the laser beam having the first wavelength transmitted through the first collimating lens or the laser beam having the third wavelength transmitted through the second collimator lens, and a second objective lens for transmitting the laser beam having the second wavelength transmitted through the first collimator lens.
摘要翻译：本发明提供了一种光学拾取装置，其实现了具有适合于三个光盘之间的每种光盘格式的光学倍率的光学系统和用于在光学系统中发射具有与每个光盘对应的波长的激光束的发光装置拾取用于将信息信号记录和/或再现到光盘，并且防止增加部件的数量以简化光学系统的组成，从而防止光路的长度被延长，光学拾取器不被尺寸增加。光拾取装置具有用于发射具有第一波长的激光束和具有第二波长的激光束的第一发光单元，用于发射具有第三波长的激光束的第二发光单元，用于发射第三波长的第一准直透镜，具有第一波长的激光束和具有第二波长的激光束，用于透射具有第三波长的激光束的第二准直透镜，用于透射通过第一准直透镜透射第一波长的激光束的第一物镜或具有通过第二准直透镜透射的第三波长的激光束和用于透射通过第一准直透镜透射具有第二波长的激光束的第二物镜。

59. 发明申请

US20050270912A1 Optical pickup and apparatus for recording and/or reproducing optical recording medium 审中-公开
标题翻译：用于记录和/或再现光学记录介质的光学拾取器和设备
公开(公告)号：US20050270912A1
公开(公告)日：2005-12-08
申请号：US11119927
申请日：2005-05-03
申请人： Katsutoshi Sato , Hiroaki Yukawa , Kenji Yamamoto , Noriaki Nishi , Midori Kanaya
发明人： Katsutoshi Sato , Hiroaki Yukawa , Kenji Yamamoto , Noriaki Nishi , Midori Kanaya
IPC分类号： G11B7/135 , G11B7/00 , G11B7/125
CPC分类号： G11B7/1275 , G11B7/1359 , G11B7/1367 , G11B2007/0006
摘要： The present invention provides an optical pickup in which light beams of different wavelengths, radiated from plural light sources and reflected back from a recording surface, are condensed in the same area. The optical pickup records and/or reproduces each of a plurality of optical recording mediums having different protective substrate thicknesses, by light beams different in wavelength and in numerical aperture, and includes a light source including a first radiating part for radiating a first light beam having a first wavelength, a second radiating part for radiating a second light beam having a second wavelength, and a third radiating part for radiating a third light beam having a third wavelength, an objective lens for condensing said first to third light beams on each of the optical recording mediums having different protective substrate thicknesses, and a light receiving section for receiving light beams reflected by said optical recording mediums and converting the light beams into electrical signals, there being provided an optical axis combining section on an light path from a light source to said light receiving section for bringing the optical axes of reflected light beams of said first to third light beams into coincidence on a light receiving surface of said light receiving section.
摘要翻译：本发明提供了一种光拾取器，其中从多个光源辐射并从记录表面反射的不同波长的光束在同一区域中被冷凝。光学拾取器通过不同波长和数值孔径的光束记录和/或再现具有不同保护衬底厚度的多个光学记录介质中的每一个，并且包括光源，该光源包括用于辐射第一光束的第一辐射部分，第一波长的第二辐射部分，用于辐射具有第二波长的第二光束的第二辐射部分和用于辐射具有第三波长的第三光束的第三辐射部分，用于将所述第一至第三光束聚光的物镜具有不同保护基板厚度的光记录介质和用于接收由所述光记录介质反射并将光束转换成电信号的光束的光接收部分，在从光源到光源的光路上设置有光轴组合部分所述光接收部分用于使反射光束的光轴旋转所述第一至第三光束在所述光接收部分的光接收表面上重合。

60. 发明授权

US06700842B1 Optical head, photodetector, optical information recording and reproducing apparatus and focus error detecting method 失效
标题翻译：光头，光电检测器，光信息记录和再现装置以及聚焦误差检测方法
公开(公告)号：US06700842B1
公开(公告)日：2004-03-02
申请号：US09671103
申请日：2000-09-27
申请人： Noriaki Nishi
发明人： Noriaki Nishi
IPC分类号： G11B700
CPC分类号： G11B7/0909 , G11B7/00718 , G11B7/08505 , G11B7/08511 , G11B7/0943 , G11B7/131 , G11B11/10543 , G11B11/10576 , G11B2007/0006
摘要： Disclosed are an optical head, a photodetector, an optical recording and reproducing apparatus and a focus error detecting method, which can be adapted to a plurality of kinds of recording media and a land/groove recording system. A photoreceiving part for the main spot in a photodetector in an optical head is divided into a plurality of parts. An intermediate photoreceiving part consisting of four small photoreceiving parts is provided in a central area surrounded by four peripheral photoreceiving parts. Without using an output signal from the intermediate photoreceiving part positioning in an area where the intensity distribution is unstable in a converged light spot, a focus error signal is obtained only from output signals from the peripheral photoreceiving parts and a focusing control is performed by using the focus error signal. While maintaining compatibility by constructing the other parts of the optical head except for the photodetector in a manner similar to the case of the conventional astigmatism method, an excellent focusing control which does not cause much track crossing noise can be performed also on a land/groove recording medium.
摘要翻译：公开了一种光头，光电检测器，光记录和再现装置以及聚焦误差检测方法，其可适用于多种记录介质和平台/凹槽记录系统。用于光头中的光电检测器中的主光点的光接收部分被分成多个部分。由四个小光接收部分组成的中间光接收部分设置在由四个周边光接收部分包围的中心区域中。不使用在会聚光点中的强度分布不稳定的区域中定位的中间光接收部分的输出信号，仅从外围光接收部分的输出信号获得聚焦误差信号，并且通过使用聚焦误差信号。通过以与常规散光方法相似的方式构造除了光电检测器之外的光学头的其它部分来维持兼容性，也可以在纹间/凹槽上执行不会产生很多轨道交叉噪声的优异的聚焦控制记录介质。

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