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21. 发明申请

US20060136714A1 Method and apparatus for encryption and decryption, and computer product 审中-公开
标题翻译：用于加密和解密的方法和装置，以及计算机产品
公开(公告)号：US20060136714A1
公开(公告)日：2006-06-22
申请号：US11281875
申请日：2005-11-18
申请人： Katsuya Yagi , Manabu Ozawa , Kyoko Fujisawa
发明人： Katsuya Yagi , Manabu Ozawa , Kyoko Fujisawa
IPC分类号： H04L9/00
CPC分类号： H04L9/0891 , H04L9/0894 , H04L63/0442 , H04L63/08
摘要： Each of a client and a server has a pattern table. The client reads a public key from the pattern table to encrypt data. The client adds a pattern number corresponding to the public key used for encryption to the encrypted data, and transmits the encrypted data to the server. The server searches the pattern table based on the pattern number, to specify a combination of the public key and a secret key. The server decrypts the encrypted data based on the secret key to obtain original data.
摘要翻译：每个客户端和服务器都有一个模式表。客户端从模式表读取公钥以加密数据。客户端将与用于加密的公钥相对应的模式号添加到加密数据，并将加密数据发送到服务器。服务器根据模式编号搜索模式表，指定公钥和秘密密钥的组合。服务器根据秘密密钥解密加密数据，获取原始数据。

22. 发明申请

US20060013109A1 Optical pickup apparatus 失效
标题翻译：光拾取装置
公开(公告)号：US20060013109A1
公开(公告)日：2006-01-19
申请号：US11175129
申请日：2005-07-05
申请人： Katsumi Fujiwara , Tatsuji Kurogama , Katsuya Yagi , Hideyuki Fujii
发明人： Katsumi Fujiwara , Tatsuji Kurogama , Katsuya Yagi , Hideyuki Fujii
IPC分类号： G11B7/00
CPC分类号： G11B7/1376 , G11B7/0937 , G11B7/13925 , G11B7/1398 , G11B2007/0006
摘要： An optical pickup apparatus for recording and/or reproducing information onto/or from information recording surface, the optical pickup apparatus comprises a laser light source, an objective lens for converging light beams from the laser light source onto the information recording surface through a protective layer of an optical information recording medium, an optical device for changing a divergence angle of incident light beams by moving in an optical axis direction, the optical device being arranged between the laser light source and the objective lens, a light receiving device for receiving light beams reflected by the information recording surface and passed through the objective lens, and a driving device capable of moving the optical device in a direction crossing the optical axis.
摘要翻译：一种用于在信息记录表面上或从信息记录表面记录和/或再现信息的光学拾取装置，该光学拾取装置包括激光光源，用于将来自激光光源的光束通过保护层会聚到信息记录表面上的物镜光学信息记录介质的光学装置，用于通过沿光轴方向移动来改变入射光束的发散角的光学装置，所述光学装置布置在激光光源和物镜之间，光接收装置，用于接收光束由信息记录表面反射并通过物镜，以及能够沿与光轴交叉的方向移动光学装置的驱动装置。

23. 发明授权

US5757758A Optical pickup apparatus objective lens and converging optical system for optical pickup and optical disk apparatus 失效
标题翻译：用于光学拾取器和光盘装置的光学拾取装置物镜和会聚光学系统
公开(公告)号：US5757758A
公开(公告)日：1998-05-26
申请号：US761892
申请日：1996-12-09
申请人： Katsuya Yagi , Hiroyuki Yamazaki , Masaya Kobayashi
发明人： Katsuya Yagi , Hiroyuki Yamazaki , Masaya Kobayashi
IPC分类号： G11B7/00 , G11B7/13 , G11B7/135
CPC分类号： G11B7/139 , G11B7/131 , G11B7/1378 , G11B7/1381 , G11B2007/0006 , G11B2007/13727
摘要： An optical pickup apparatus includes: a laser light source; a light converging optical system for converging a light beam emitted from the laser light source onto a first information recording surface of a first optical information recording medium having a thickness t1 of a transparent substrate, or a second information recording surface of a second optical information recording medium having a thickness t2 of a transparent substrate. The light converging optical system has a best fit wavefront aberration of 0.07 .lambda. rms or less at a numerical aperture of NA1 when the thickness t1 of the transparent substrate is used, and has a best fit wavefront aberration of 0.07 .lambda. rms or less at a numerical aperture of NA2 when the thickness t2 of the transparent substrate is used, where NA1 represents a numerical aperture on a side of the first optical information recording medium in the light converging optical system when the light beam emitted from the laser light source is converged as a light spot to be read out, NA2 represents an effective numerical aperture on a side of the second optical information recording medium in the light converging optical system when the light beam emitted from the laser light source is converged as a light spot to be read out, and .lambda. represents a wavelength of the light beam emergent from the laser light source. The optical pickup apparatus further includes a light detector for detecting light reflected from the first or second information recording surface.
摘要翻译：一种光学拾取装置，包括：激光源; 用于将从激光光源发射的光束会聚在具有透明基板的厚度t1的第一光学信息记录介质的第一信息记录表面上的聚光光学系统或第二光学信息记录的第二信息记录表面介质具有透明基板的厚度t2。当使用透明基板的厚度t1时，聚光光学系统在NA1的数值孔径下具有0.07λrms或更小的最佳拟合波前像差，并且在数值下具有0.07λrms或更小的最佳拟合波前像差当使用透明基板的厚度t2时NA2的孔径，其中NA1表示当从激光光源发射的光束会聚为聚光光学系统时的第一光学信息记录介质的一侧上的数值孔径 NA2表示当从激光光源射出的光束会聚为要读出的光点时，会聚光学系统中的第二光学信息记录介质侧的有效数值孔径， λ表示从激光光源射出的光束的波长。光学拾取装置还包括用于检测从第一或第二信息记录表面反射的光的光检测器。

24. 发明授权

US5754513A Information pick-up apparatus and optical disk apparatus 失效
公开(公告)号：US5754513A
公开(公告)日：1998-05-19
申请号：US637210
申请日：1996-04-24
申请人： Katsuya Yagi , Hiroyuki Yamazaki , Masaya Kobayashi
发明人： Katsuya Yagi , Hiroyuki Yamazaki , Masaya Kobayashi
IPC分类号： G11B7/00 , G11B7/085 , G11B7/09 , G11B7/12 , G11B7/135 , G11B19/12
CPC分类号： G11B7/1381 , G11B19/12 , G11B7/085 , G11B7/123 , G11B7/1376 , G11B7/139 , G11B7/13925 , G11B7/13927 , G11B2007/0006 , G11B2007/0013 , G11B7/0903 , G11B7/135
摘要： The present invention relates to an optical pick-up apparatus having a laser beam source and an objective lens to converge the luminous flux from the laser beam source onto the information recording surface of an optical information recording medium through a transparent substrate of the optical information recording medium such as CDs or DVDs, and specifically relates to a technology to move a divergence degree changing means such as a collimator lens or the like, in the direction of the optical axis, and/or to a technology to move the laser beam source in the direction of the optical axis, corresponding to the thickness of the transparent substrate of the optical information recording medium, in order to read information from plural types of optical information recording mediums having different transparent substrate thickness.

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