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61. 发明授权

US5068843A Optical read-write apparatus 失效
标题翻译：光读写装置
公开(公告)号：US5068843A
公开(公告)日：1991-11-26
申请号：US546875
申请日：1990-07-02
申请人： Nobuo Takeshita , Teruo Fujita
发明人： Nobuo Takeshita , Teruo Fujita
IPC分类号： G11B7/09 , G11B7/135 , G11B7/14
CPC分类号： G11B7/1362 , G11B7/0901
摘要： An optical read-write apparatus for reading and writing information in tracks on an optical medium such as an optical disk has two or more beam sources for producing light beams with different wavelengths, and corresponding dichroic mirrors mounted in the path of the beams. Each of the dichroic mirrors reflects light of the wavelength of one of the beams and transmits light of other wavelengths. Piezoelectric transducers are provided for tilting one or more of the dichroic mirrors to adjust the tracking of the beams. An objective lens receives the beams after reflection from the dichroic mirrors and focuses them onto the optical medium.
摘要翻译：用于在诸如光盘的光学介质上的轨道中读取和写入信息的光学读写装置具有两个或更多个用于产生具有不同波长的光束的光束源，以及安装在光束路径中的对应的二向色镜。每个分色镜反射其中一个光束的波长的光并透射其他波长的光。提供压电换能器用于倾斜一个或多个分色镜以调节光束的跟踪。物镜从二向色镜反射后接收光束并将其聚焦到光学介质上。

62. 发明授权

US08724439B2 Optical recording method and optical recording device 有权
标题翻译：光记录方法和光记录装置
公开(公告)号：US08724439B2
公开(公告)日：2014-05-13
申请号：US13260150
申请日：2010-04-23
申请人： Tomo Kishigami , Nobuo Takeshita
发明人： Tomo Kishigami , Nobuo Takeshita
IPC分类号： G11B7/00
CPC分类号： G11B7/1267 , G11B7/00456 , G11B7/0062 , G11B7/00736
摘要： In an optical recording method, recording parameters (WU) to be used for recording are obtained using recommended recording parameter values (WR) read from an optical recording medium and previously obtained vector information (PC) and approximation coefficients (Ca, Cb) (S24). Writing to the optical recording medium is performed using the obtained recording parameters (S17). The vector information (PC) includes a vector component of the parameters obtained statistically with respect to parameter difference values (DF) between optimal recording parameter values (WO) and the recommended recording parameter values (WR) over a plurality of optical recording media so as to strengthen mutual correlation between the parameters. The approximation coefficients (Ca, Cb) are obtained by approximating a relationship between converted information (X) and feature information (D), the converted information (X) indicating a relationship between the vector information (PC) and the parameter difference values (DF), the feature information (D) indicating the features of each optical recording medium obtained from the recommended recording parameter values (WR) and the vector information (PC).
摘要翻译：在光学记录方法中，使用从光学记录介质读取的推荐记录参数值（WR）和先前获得的矢量信息（PC）和近似系数（Ca，Cb）（S24）获得用于记录的记录参数（WU））。使用所获得的记录参数来执行对光记录介质的写入（S17）。矢量信息（PC）包括相对于多个光记录介质上的最佳记录参数值（WO）和推荐记录参数值（WR）之间的参数差值（DF）统计得到的参数的矢量分量，加强参数之间的相互关联。近似系数（Ca，Cb）是通过近似转换信息（X）和特征信息（D）之间的关系得到的，表示矢量信息（PC）与参数差值（DF）之间的关系的转换信息（X）），指示从推荐的记录参数值（WR）和矢量信息（PC）获得的每个光学记录介质的特征的特征信息（D）。

63. 发明申请

US20130286810A1 OPTICAL PICKUP DEVICE AND OPTICAL DISC DEVICE 有权
标题翻译：光学拾取装置和光盘装置
公开(公告)号：US20130286810A1
公开(公告)日：2013-10-31
申请号：US13978160
申请日：2012-01-17
申请人： Hironori Nakahara , Toshiya Matozaki , Nobuo Takeshita
发明人： Hironori Nakahara , Toshiya Matozaki , Nobuo Takeshita
IPC分类号： G11B7/1392
CPC分类号： G11B7/13927 , G11B7/1362 , G11B7/1376 , G11B2007/0013
摘要： An optical pickup device includes a laser light source 201, a collimating optical system 202 for converting laser light to parallel light, a focusing optical system 205 for focusing the parallel light onto an optical disc, a light detection unit for receiving returning light returning by reflection of the focused light from the optical disc 101 and outputting a detection signal, and a reflecting mirror 204 disposed between the collimating optical system and the focusing optical system. The reflecting mirror 204 has a reflective surface including three regions having different reflectances. The central region on the reflecting surface meets the other two regions, at positions illuminated by the light focused by the light focusing optical system, in boundary lines that are parallel to a radial direction on the optical disc 101. The reflectance of the central region is lower than the reflectances of the other two regions.
摘要翻译：光拾取装置包括激光源201，用于将激光转换为平行光的准直光学系统202，用于将平行光聚焦到光盘上的聚焦光学系统205，用于接收通过反射返回的返回光的光检测单元来自光盘101的聚焦光并输出检测信号，反射镜204设置在准直光学系统和聚焦光学系统之间。反射镜204具有包括具有不同反射率的三个区域的反射表面。反射表面上的中心区域与由光聚焦光学系统聚焦的光照射的位置处在与光盘101上的径向平行的边界线处的另外两个区域相交。中心区域的反射率为低于其他两个地区的反射率。

64. 发明授权

US08437233B2 Optical recording/reproduction method and optical recording/reproduction device 有权
标题翻译：光学记录/再现方法和光学记录/再现装置
公开(公告)号：US08437233B2
公开(公告)日：2013-05-07
申请号：US13642856
申请日：2010-12-15
申请人： Yusuke Kanatake , Tomo Kishigami , Toshiya Matozaki , Nobuo Takeshita
发明人： Yusuke Kanatake , Tomo Kishigami , Toshiya Matozaki , Nobuo Takeshita
IPC分类号： G11B11/00
CPC分类号： G11B7/0945 , G11B7/08511 , G11B7/13925 , G11B2007/0013
摘要： An optical recording/reproduction method and device that can perform control for optimizing the amount of spherical aberration in a multilayered optical disc in a short period of time. When the objective lens is displaced in the focusing direction, the amplitude value of the focusing error signal detected just after leaving the focal position of a given first recording layer and the amplitude value of the focusing error signal detected just before passing through the focal position of a given second recording layer other than the first recording layer are measured with a particular spherical aberration, the amplitude ratio of amplitude values is calculated, the difference between spherical aberration and the optimal spherical aberration for the second recording layer is approximated as a function of the amplitude ratio, the optimal spherical aberration is calculated on the basis of this approximation, and the spherical aberration is set.
摘要翻译：一种能够在短时间内对多层光盘中的球面像差的量进行优化的光记录再现方法和装置。当物镜在聚焦方向上移位时，恰好在离开给定第一记录层的焦点位置之后检测到的聚焦误差信号的振幅值和刚刚通过焦点位置之前检测到的聚焦误差信号的振幅值以特定的球面像差测量除了第一记录层之外的给定的第二记录层，计算振幅值的幅度比，将第二记录层的球面像差和最佳球面差之差近似为基于该近似值计算最佳球面像差，并设置球面像差。

65. 发明授权

US08358568B2 Optical disc reproduction power setting method, optical disc reproduction method, and optical disc device 失效
标题翻译：光盘再现功率设定方法，光盘再现方法和光盘装置
公开(公告)号：US08358568B2
公开(公告)日：2013-01-22
申请号：US13203799
申请日：2010-04-07
申请人： Tomo Kishigami , Koichi Ikuta , Nobuo Takeshita , Yoshihiro Kiyose , Yusuke Kanatake
发明人： Tomo Kishigami , Koichi Ikuta , Nobuo Takeshita , Yoshihiro Kiyose , Yusuke Kanatake
IPC分类号： G11B7/00
CPC分类号： G11B7/00736 , G11B7/005 , G11B7/1267
摘要： According to a method for setting the laser beam power applied to reproduce information recorded on an optical disc, information recorded in a region on the optical disc is reproduced using three or more test reproduction powers (S22B), the number of reproductions until the degradation of the quality of the reproduced signal reaches a prescribed value is determined as the degradation number of reproductions (S22F), the relation between the test reproduction power and the degradation number of reproductions is approximated by a curve, and a reproduction power restricting the degradation of the reproduced signal quality to a predetermined amount or less over a certain guaranteed number of reproductions is determined (S25F). In optical reproduction from an optical disc on which information is recorded, the optimum power of irradiation for reproduction can be set, and degradation of the information due to the reproducing light can be prevented.
摘要翻译：根据用于设置用于再现记录在光盘上的信息的激光束功率的方法，使用三个或更多个测试再现功率（S22B）再现记录在光盘上的区域中的信息，直到再次使用将再现信号的质量达到规定值确定为再现的劣化次数（S22F），则通过曲线近似测试再现功率和再现的退化次数之间的关系，并且限制了再现的劣化确定在一定的保证数量的再现的再现信号质量达预定量或更小的值（S25F）。在从记录有信息的光盘进行光学再现时，可以设置用于再现的照射的最佳功率，并且可以防止由于再现光引起的信息的劣化。

66. 发明授权

US08270284B2 Optical disk and optical disk device and control device 有权
标题翻译：光盘与光盘装置及控制装置
公开(公告)号：US08270284B2
公开(公告)日：2012-09-18
申请号：US11885145
申请日：2006-02-21
申请人： Nobuo Takeshita , Noboru Yashima , Masaharu Ogawa
发明人： Nobuo Takeshita , Noboru Yashima , Masaharu Ogawa
IPC分类号： G11B7/24
CPC分类号： G11B7/00736 , G11B7/24038 , G11B2007/0013
摘要： The present invention relates to optical disks and optical disk devices, and has an object to reduce access time and prevent malfunction. To attain the above object, in an optical disk (100), a management information area (130) is placed inside a user data area (140), namely, at the innermost circumference position of the optical disk (100), in an information layer (101) placed at the farthest position from the surface. A position information area (132) that stores position information indicating the position of each information layer in a thickness direction of the optical disk (100) is placed in the management information area (130).
摘要翻译：本发明涉及光盘和光盘装置，其目的是减少访问时间并防止故障。为了实现上述目的，在光盘（100）中，将管理信息区域（130）放置在用户数据区域（140）内，即位于光盘（100）的最内圆周位置处的信息中层（101）位于离表面最远的位置。将存储指示光盘（100）的厚度方向上的各信息层的位置的位置信息的位置信息区域（132）放置在管理信息区域（130）中。

67. 发明授权

US08248907B2 Optical disc and optical disc device 有权
公开(公告)号：US08248907B2
公开(公告)日：2012-08-21
申请号：US11822249
申请日：2007-07-03
申请人： Hironori Nakahara , Nobuo Takeshita , Masaharu Ogawa
发明人： Hironori Nakahara , Nobuo Takeshita , Masaharu Ogawa
IPC分类号： G11B7/24
CPC分类号： G11B7/00736 , G11B7/0901 , G11B7/24038 , G11B2007/0013
摘要： In a multilayer optical disc having information layers conforming to a plurality of different optical disc standards, because the type of each information layer is not recorded in the other information layers, in read and write operations by a compatible optical disc device conforming to a plurality of optical disc standards, every time the information layer being accessed changes, it has been necessary to read the type of the information layer and select a method of generating a tracking error signal adapted to the type of information layer, so access has taken time. In order to solve the above problem, in the optical multilayer disc according to the present invention, having information layers conforming to a plurality of different optical disc standards, in an area in one of the information layers, information about the other information layers is recorded. The time required to access the other information layers can be reduced by using this information to select a tracking error signal generating method.

68. 发明授权

US08125869B2 Optical recording method and optical recording device 有权
标题翻译：光记录方法和光记录装置
公开(公告)号：US08125869B2
公开(公告)日：2012-02-28
申请号：US12153965
申请日：2008-05-28
申请人： Yusuke Kanatake , Tomo Kishigami , Nobuo Takeshita
发明人： Yusuke Kanatake , Tomo Kishigami , Nobuo Takeshita
IPC分类号： G11B7/00
CPC分类号： G11B7/0062 , G11B7/1267
摘要： To adjust the parameters of a write strategy for recording data on an optical recording medium, the jitter value of a reproduced signal obtained from recorded data is detected. If the jitter value exceeds a prescribed threshold, a write strategy parameter having a comparatively small effect on the jitter value is adjusted, and subsequent data are written on the recording medium using the adjusted parameter. Parameters are selected for adjustment in ascending order of their effect on the jitter value. Stable data recording can thereby be carried out without significant jitter degradation.
摘要翻译：为了调整用于在光学记录介质上记录数据的写入策略的参数，检测从记录数据获得的再现信号的抖动值。如果抖动值超过规定的阈值，则调整对抖动值的影响较小的写入策略参数，并且使用调整后的参数将后续的数据写入记录介质。选择参数来调整其对抖动值的影响的升序。从而可以在没有显着的抖动劣化的情况下执行稳定的数据记录。

69. 发明授权

US08018812B2 Optical disc and optical disc device 有权
公开(公告)号：US08018812B2
公开(公告)日：2011-09-13
申请号：US11878463
申请日：2007-07-24
申请人： Hironori Nakahara , Nobuo Takeshita , Masaharu Ogawa
发明人： Hironori Nakahara , Nobuo Takeshita , Masaharu Ogawa
IPC分类号： G11B7/20
CPC分类号： G11B27/329 , G11B7/00736 , G11B7/0079 , G11B7/0945 , G11B7/1275 , G11B7/24038 , G11B19/122 , G11B20/1217 , G11B27/105 , G11B2007/0006 , G11B2007/0013 , G11B2220/235
摘要： In a multilayer optical disc having information layers conforming to a plurality of different optical disc standards, because the type of each information layer is not recorded in the other information layers, in read and write operations by a compatible optical disc device conforming to a plurality of optical disc standards, every time the information layer being accessed changes, it has been necessary to read the type of the information layer and select a method of generating a tracking error signal adapted to the type of information layer, so access has taken time. In order to solve the above problem, in the optical multilayer disc according to the present invention, having information layers conforming to a plurality of different optical disc standards, in an area in one of the information layers, information about the other information layers is recorded. The time required to access the other information layers can be reduced by using this information to select a tracking error signal generating method.

70. 发明授权

US07969840B2 Recording method for optimizing an optimal recording power 有权
标题翻译：用于优化最佳记录功率的记录方法
公开(公告)号：US07969840B2
公开(公告)日：2011-06-28
申请号：US12182735
申请日：2008-07-30
申请人： Nobuo Takeshita , Osamu Tsukahara , Tomo Kishigami
发明人： Nobuo Takeshita , Osamu Tsukahara , Tomo Kishigami
IPC分类号： G11B7/00
CPC分类号： G11B7/1267 , G11B7/00736 , G11B2007/0013
摘要： A recording method for an optical disc having at least three recording layers (11, 12, 13, 14), in which test recording areas are formed in the odd-numbered recording layers (11, 13) and the even-numbered recording layers (12, 14) in positions that are mutually non-overlapping in the thickness direction of the optical disc, the test recording areas in the odd-numbered recording layers are formed in positions mutually aligned in the thickness direction, and the test recording areas in the even-numbered recording layers are formed in positions mutually aligned in the thickness direction. The time for test recording for determining the optimal recording power can be shortened.
摘要翻译：一种用于具有至少三个记录层（11,12,13,14）的光盘的记录方法，其中测试记录区域形成在奇数编号记录层（11,13）和偶数记录层（ 12,14）在光盘的厚度方向上彼此不重叠的位置中，奇数编号记录层中的测试记录区域形成在厚度方向上相互排列的位置，并且测试记录区域偶数编号的记录层形成在厚度方向上相互排列的位置上。可以缩短用于确定最佳记录功率的测试记录的时间。

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