Light beam scanning device with constant spot intensity and scan speed
related modulating means
    1.
    发明授权
    Light beam scanning device with constant spot intensity and scan speed related modulating means 失效
    具有恒定光斑强度和扫描速度相关调制方式的光束扫描装置

    公开(公告)号:US4343531A

    公开(公告)日:1982-08-10

    申请号:US119455

    申请日:1980-02-07

    CPC分类号: G02B26/127 G02B13/0005

    摘要: A light beam scanning device of a construction, in which an image forming scanning optical system is provided with an expedient for preventing spot intensity of a light beam on a scanning surface from falling off at a peripheral region of a scanning object in comparison with its center part, and a light beam modulator is provided with an expedient for making constant a length of a single dot drawn by a beam spot with respect to one modulating signal on the scanning surface.

    摘要翻译: 一种构造的光束扫描装置,其中成像扫描光学系统具有防止扫描面上的光束的光斑强度在扫描对象的周边区域与其中心相比脱落的方法 并且光束调制器具有相对于扫描表面上的一个调制信号使束斑所绘制的单点长度恒定的方法。

    Two-dimensional scanning optical system with distortion correction
    2.
    发明授权
    Two-dimensional scanning optical system with distortion correction 失效
    具有失真校正的二维扫描光学系统

    公开(公告)号:US4256364A

    公开(公告)日:1981-03-17

    申请号:US11859

    申请日:1979-02-13

    CPC分类号: G02B26/10 G02B27/0031

    摘要: A two-dimensional scanning optical system comprising a deflector capable of two-dimensional deflection of a light beam in two mutually orthogonal directions, an imaging lens system provided with a predetermined distortion characteristic and capable of focusing the light beam deflected by said deflector onto a plane to be scanned, and a light source for introducing said light beam into said deflector in a direction parallel to the optical axis of said imaging lens system, thereby achieving a scanning on said plane with substantially linear scan lines.

    摘要翻译: 一种二维扫描光学系统,包括能够在两个相互正交的方向上二维偏转光束的偏转器;成像透镜系统,其具有预定的失真特性并且能够将由所述偏转器偏转的光束聚焦到平面上 以及用于将光束沿平行于所述成像透镜系统的光轴的方向引入所述偏转器的光源,从而以基本上线性的扫描线在所述平面上进行扫描。

    Two-dimensional scanning apparatus with constant speed scan
    3.
    发明授权
    Two-dimensional scanning apparatus with constant speed scan 失效
    具有恒速扫描的二维扫描仪

    公开(公告)号:US4180307A

    公开(公告)日:1979-12-25

    申请号:US931927

    申请日:1978-08-08

    CPC分类号: G02B26/12 H04N1/113

    摘要: Two-dimensional scanning apparatus scans a stationary two-dimensional surface with a first deflector and a second deflector which deflects a light beam in a direction perpendicular to the deflecting direction of said first deflector. An afocal optical system is provided between said first and second deflectors, while an imaging lens system is provided between said second deflector and the scanning surface. Said first deflector, afocal optical system and imaging lens system cooperate to displace the light beam at a constant speed in a principal scanning direction on the scanning surface, while said second deflector and imaging lens system cooperate to displace the light beam at a constant speed in an auxiliary scanning direction on said surface.

    摘要翻译: 二维扫描装置用固定的二维表面扫描第一偏转器和第二偏转器,该第一偏转器和第二偏转器使垂直于所述第一偏转器的偏转方向的方向偏转光束。 在所述第一和第二偏转器之间提供无焦光学系统,而在所述第二偏转器和扫描表面之间提供成像透镜系统。 所述第一偏转器,无焦光学系统和成像透镜系统配合以在扫描表面上沿主扫描方向以恒定速度移位光束,而所述第二偏转器和成像透镜系统协调以一定速度移动光束 在所述表面上的辅助扫描方向。

    Method and system for managing a key for encryption or decryption of data
    4.
    发明授权
    Method and system for managing a key for encryption or decryption of data 有权
    用于管理数据加密或解密密钥的方法和系统

    公开(公告)号:US08233627B2

    公开(公告)日:2012-07-31

    申请号:US12061710

    申请日:2008-04-03

    IPC分类号: H04L9/00

    摘要: A user private key is stored in a database of the user terminal. A user public key and user information are stored in the user management DB. The encryption/decryption unit encrypts an authority private key specific to a first authority given to a user, by using a user public key associated with user information to indicate a user. The secret sharing unit shares in secret an authority private key into two or more shared authority private keys. The encryption/decryption unit encrypts the shared authority private keys, by using an authority public key specific to each of second authorities to manage the first authority in a shared manner. The authority management DB stores the encrypted authority private key and authority public key in association with the first authority, and stores the encrypted shared authority private keys in association with the second authorities.

    摘要翻译: 用户私钥存储在用户终端的数据库中。 用户公钥和用户信息存储在用户管理DB中。 加密/解密单元通过使用与用户信息相关联的用户公钥来指示用户加密特定于给予用户的第一授权机构的授权专用密钥。 秘密共享单元将权限私钥秘密共享为两个或多个共享权限私钥。 加密/解密单元通过使用特定于每个第二权限的授权公钥对共享权限私钥进行加密来以共享方式管理第一权限。 权限管理DB与第一权限相关联地存储加密的权限私钥和权限公钥,并且与第二权限关联地存储加密的共享权限私钥。

    Projecting apparatus
    5.
    发明授权
    Projecting apparatus 失效
    投影仪

    公开(公告)号:US5078487A

    公开(公告)日:1992-01-07

    申请号:US512012

    申请日:1990-04-16

    IPC分类号: G03B27/34 G02B27/18 G03B27/32

    CPC分类号: G03B27/326

    摘要: A projecting apparatus comprises support device for supporting an original, a projection optical system for forming the image of the original, an optical element disposed on the image side of the projection optical system to cause a principal light ray having entered from the original through the projection optical system to travel in parallelism to the optic axis of the projection optical system, and control device for varying the imaging magnification of the original by the projection optical system with the spacing between the exit pupil of the projection optical system and the optical element being kept constant.

    摘要翻译: 投影装置包括用于支撑原稿的支撑装置,用于形成原稿的图像的投影光学系统,设置在投影光学系统的像侧上的光学元件,以使主要的光线从原稿通过投影 光学系统平行于投影光学系统的光轴行进;以及控制装置,用于通过投影光学系统改变投影光学系统的出射光瞳和保持光学元件之间的间隔的原稿的成像倍率 不变。

    Optical scanning apparatus
    6.
    发明授权
    Optical scanning apparatus 失效
    光学扫描装置

    公开(公告)号:US5028103A

    公开(公告)日:1991-07-02

    申请号:US581194

    申请日:1990-09-11

    摘要: An optical scanning apparatus in which a plurality of scanning light beams are deflected by a light deflector and the deflected light beams impinge onto a spherical lens having an f-.theta. characteristic at inclinations with respect to the optical axis of the lens so as to be focused on a scanning object. The apparatus is arranged to meet the following condition: ##EQU1## where, f represents the focal distance of the spherical lens (mm), .omega. represents the effective scanning rotation angle of the light deflector (deg), .DELTA.(.omega.) represents the amount of curve of the scanning line caused by the light deflecting element in the subscanning direction (mm), .rho. represents the resolution of the scan on the scanning object (lines/mm), .theta. represents the angle of inclination of any one of the light beams with respect to the optical axis of the lens within a plane which contains the optical axis of the lens and which is perpendicular to the scanning axis (deg), L represents the distance between the first reflection surface of the light deflector and the principal plane of the lens adjacent the scanning object along the optical axis (mm), and h represents the height of incidence of the any one of the light beams to the lens (mm).

    摘要翻译: 一种光学扫描装置,其中多个扫描光束被光偏转器偏转,并且偏转的光束照射到具有相对于透镜的光轴倾斜的fθ特性的球面透镜上,以便被聚焦 在扫描对象上。 该装置被设置为满足以下条件:其中,f表示球面透镜的焦距(mm),ω表示光偏转器的有效扫描旋转角度(deg),DELTA(ω)表示量 由扫描线的副扫描方向(mm)引起的扫描线的曲线,rho表示扫描对象上的扫描分辨率(行/ mm),θ表示任一光束的倾斜角 相对于包含透镜的光轴并且垂直于扫描轴(deg)的平面内的透镜的光轴,L表示光偏转器的第一反射表面与主要平面之间的距离 沿着光轴(mm)与扫描物体相邻的透镜,h表示任一个光束到透镜的入射高度(mm)。

    Optical information processing apparatus
    7.
    发明授权
    Optical information processing apparatus 失效
    光信息处理装置

    公开(公告)号:US4635243A

    公开(公告)日:1987-01-06

    申请号:US679934

    申请日:1984-12-10

    申请人: Masamichi Tateoka

    发明人: Masamichi Tateoka

    CPC分类号: G11B7/0903

    摘要: An optical information processing apparatus is provided with a unit for recording and reproducing information by projecting a main beam onto an information track on a recording medium, a unit for projecting at least two or more than two subsidiary light beams onto the information track to form light spots at different position in the transversal direction of the information track by the respective light beams and a unit for detecting the subsidiary beams reflected by the recording medium to derive a tracking signal for guiding the main beams correctly on the information track, and those light spots are larger in size in the longitudinal direction of the information track than in the transversal direction thereof.

    摘要翻译: 光学信息处理装置具有用于通过将主光束投射到记录介质上的信息轨道上来记录和再现信息的单元,用于将至少两个或两个以上的辅助光束投影到信息轨道上以形成光的单元 通过各个光束在信息轨迹的横向方向上的不同位置处的点和用于检测由记录介质反射的辅助光束的单元,以导出用于在信息轨道上正确地引导主光束的跟踪信号,以及那些光点 在信息轨道的纵向上的尺寸大于其横向方向。

    Original reading device
    8.
    发明授权
    Original reading device 失效
    原装阅读器

    公开(公告)号:US4543491A

    公开(公告)日:1985-09-24

    申请号:US450435

    申请日:1982-12-16

    CPC分类号: H04N1/193

    摘要: Disclosed is an original reading device in which, of first and second areas of the portion to be read of an original to be read which adjoin each other with a boundary therebetween, the first area is projected upon a first image pick-up element by a first lens and the second area is projected upon a second image pick-up element by a second lens, whereby the first area and the second area are read by the first element and the second element, respectively. The first and second lenses are disposed at positions corresponding to positions more toward the boundary between the first and second areas than the centers of the first and second areas.

    摘要翻译: 公开了一种原始读取装置,其中,要被读取的要被读取的部分的第一和第二区域的第一和第二区域彼此之间具有边界,第一区域通过一个第一图像拾取元件投影到第一图像拾取元件上 第一透镜和第二区域通过第二透镜投影到第二图像拾取元件上,由此第一区域和第二区域分别被第一元件和第二元件读取。 第一透镜和第二透镜设置在与第一区域和第二区域的中心更靠近第一区域和第二区域之间的边界的位置处。

    Secret information management apparatus and secret information management system
    10.
    发明授权
    Secret information management apparatus and secret information management system 有权
    秘密信息管理机构和秘密信息管理系统

    公开(公告)号:US07873168B2

    公开(公告)日:2011-01-18

    申请号:US11907680

    申请日:2007-10-16

    IPC分类号: H04L9/08 H04L9/00

    CPC分类号: H04L9/085

    摘要: In a secret information management system, a secret information management apparatus comprises a secret distribution unit which secretly distributes a data key k using a (k, n) threshold secret sharing scheme and creates n distributed keys B1, B2, . . . , Bn in the decryption of data D input from a user terminal, an encryption unit which creates n encrypted distributed keys EP1(B1), EP2(B2), . . . , EPn(Bn) using n distributed manager public keys P1, P2, . . . , Pn, and an encrypted data storage unit which stores encrypted data EK(D), an encrypted data key EPx(K) and the n encrypted distributed keys in association with each other.

    摘要翻译: 在秘密信息管理系统中,秘密信息管理装置包括使用(k,n)阈值秘密共享方案秘密地分发数据密钥k并且生成n个分布密钥B1,B2的秘密分发单元。 。 。 ,Bn在从用户终端输入的数据D的解密中,创建n个加密分布密钥EP1(B1),EP2(B2)的加密单元。 。 。 ,EPn(Bn),使用n个分布式管理员公钥P1,P2,。 。 。 ,Pn和加密数据存储单元,其相互关联地存储加密数据EK(D),加密数据密钥EPx(K)和n个加密分布密钥。