Low bandwidth zero knowledge authentication protocol and device
    1.
    发明授权
    Low bandwidth zero knowledge authentication protocol and device 失效
    低带宽零知识认证协议和设备

    公开(公告)号:US07245718B2

    公开(公告)日:2007-07-17

    申请号:US10649855

    申请日:2003-08-26

    IPC分类号: H04K1/00 H04L9/00 H04L9/28

    摘要: A method authenticates di identities in parallel using two prime numbers p and q such that q|p−1. Each identity includes a private key si and a public key vi, and a publicly known generator is α such that αq≡1 (mod p). A verifier is provided with an ordered list of the public keys vi. A prover selects uniformly at random a non-negative number r less than q. A number x=αr (mod p) is sent from the prover to a verifier. The verifier selects uniformly at random a non-negative number e less than 2(t+logd), where log is base 2, and a number t is a predetermined security parameter. The prover receives from the verifier the number e. A number y=r+Σi si*ei (mod q) is generated by the prover, and the number Y is sent to the verifier, who then determines if an equality x=αy*Πi(vi)ei (mod p) is true. The prover is accepted as having the di identities if and only if the equality is true. In a preferred embodiment the communications between the prover and the verifier is via a low-bandwidth optical channel.

    摘要翻译: 一种方法使用两个素数p和q并行地验证d i个体的身份,使得q | p-1。 每个身份包括一个私人密钥和一个公共密钥v i i,,,,,(((≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡ mod p)。 验证者被提供有公钥的有序列表v 。 证明者随机选择小于q的非负数r。 数字x =α(mod p)从证明者发送到验证者。 验证者随机选择小于2(t + logd)的非负数e,其中log为基数2,数t为预定的安全参数。 证明者从验证者那里收到数字e。 由证明者产生数字y = r +Σi(i mod i)(mod q),并且发送号码Y 到验证者,然后他们确定是否相等x =α (mod p)为真。 当且仅当相等是真的时,证明者被接受为具有d i 身份。 在优选实施例中,证明者和验证者之间的通信是经由低带宽光信道。

    Rotary Interferometer
    2.
    发明申请
    Rotary Interferometer 审中-公开
    旋转干涉仪

    公开(公告)号:US20110157595A1

    公开(公告)日:2011-06-30

    申请号:US12650322

    申请日:2009-12-30

    IPC分类号: G01J3/45 G01B9/02

    摘要: An angular displacement of an object is measured interferometrically by splitting a laser beam into a reference beam and a measuring beam. The reference beam is directed at a stationary reference retroreflector and then a phase shift detector. The measuring beam is directed at a rotatable reflective surface of the object and then a stationary measuring retroreflector and then back to the rotatable reflective surface and then to the phase shift detector such that the phase shift detector measures an angular displacement of the rotatable reflective surface when the length of the path of the measuring beam changes when the rotatable reflective surface is displaced.

    摘要翻译: 通过将激光束分成参考光束和测量光束来对物体的角位移进行干涉测量。 参考光束指向静止的参考后向反射器,然后是相移检测器。 测量光束指向物体的可旋转反射表面,然后指向静止测量后向反射器,然后返回到可旋转反射表面,然后返回到相移检测器,使得相移检测器测量可旋转反射表面的角位移, 当可旋转的反射表面被移位时,测量光束的路径的长度改变。

    Laser cutting machine
    5.
    发明授权
    Laser cutting machine 有权
    激光切割机

    公开(公告)号:US08921734B2

    公开(公告)日:2014-12-30

    申请号:US13294096

    申请日:2011-11-10

    IPC分类号: B23K26/08 B23K26/38

    摘要: A laser cutting machine includes a platform and a motion system. The motion system includes a first prismatic joint facilitating a first motion of the platform along a first direction and a second prismatic joint facilitating a second motion of the platform along a second direction. A galvano arranged on the platform, such that a motion of the platform causes a motion of the galvano, the galvano including a first mirror, wherein a third motion of the first mirror positions the laser beam along a third direction, and a second mirror, wherein a fourth motion of the second mirror positions the laser beam along a fourth direction. A control module controls concurrently the motion system and the galvano, such that a position of the laser beam on the workpiece is a vector sum of the first motion, the second motion, the third motion, and the fourth motion.

    摘要翻译: 激光切割机包括平台和运动系统。 该运动系统包括一个便于平台沿着第一方向的第一运动的第一棱柱形接头,以及有助于平台沿着第二方向进行第二运动的第二棱柱形接头。 布置在平台上的电流体,使得平台的运动导致电流体的运动,电流体包括第一反射镜,其中第一反射镜的第三运动沿着第三方向定位激光束,并且第二反射镜, 其中所述第二反射镜的第四运动沿着第四方向定位所述激光束。 控制模块同时控制运动系统和电流,使得激光束在工件上的位置是第一运动,第二运动,第三运动和第四运动的矢量和。

    Secure Computer System and Method
    6.
    发明申请
    Secure Computer System and Method 审中-公开
    安全的计算机系统和方法

    公开(公告)号:US20090165139A1

    公开(公告)日:2009-06-25

    申请号:US11962818

    申请日:2007-12-21

    IPC分类号: G06F21/02

    CPC分类号: G06F21/74

    摘要: An apparatus is configured to perform secure processing of confidential information. The apparatus comprises a secure disk configured to store confidential information arranged inside a lockable container; a processor configured to process the confidential information arranged inside the lockable container; an insecure network arranged outside the lockable container; and means for connecting the processor only to the secure disk or alternatively to the insecure network at any one time, but not to both the secure disk and the insecure network at the same time.

    摘要翻译: 一种装置被配置为执行机密信息的安全处理。 该装置包括:安全盘,用于存储布置在可锁定容器内的机密信息; 处理器,被配置为处理布置在所述可锁定容器内的机密信息; 布置在可锁定容器外部的不安全网络; 以及用于在任何一个时间将处理器仅连接到安全盘或替换为不安全网络的装置,而不是同时将安全盘和不安全网络连接到安全盘。

    Electronic display with compensation for shaking
    7.
    发明授权
    Electronic display with compensation for shaking 有权
    电子显示屏,补偿震动

    公开(公告)号:US06906754B1

    公开(公告)日:2005-06-14

    申请号:US09666757

    申请日:2000-09-21

    摘要: A display device includes a display screen, and horizontal and vertical display signals. The horizontal and vertical display signals are to render an image on the display screen. A first and second accelerometers are directly coupled to the display screen. First and second compensation circuits convert acceleration in horizontal and vertical directions respectively to x- and y-compensation signals. First and second adders combine the x- and y-compensation signals with the horizontal and vertical display signals to dynamically adjust a location of the image on the display screen while the display device is subject to movement.

    摘要翻译: 显示装置包括显示屏,以及水平和垂直显示信号。 水平和垂直显示信号是在显示屏上呈现图像。 第一和第二加速度计直接耦合到显示屏。 第一和第二补偿电路将水平和垂直方向的加速度分别转换为x和y补偿信号。 第一和第二加法器将x和y补偿信号与水平和垂直显示信号组合,以在显示装置经受运动时动态地调整图像在显示屏上的位置。

    LED with controlled capacitive discharge for photo sensing
    8.
    发明授权
    LED with controlled capacitive discharge for photo sensing 有权
    具有受控电容放电的LED用于感光

    公开(公告)号:US06870148B2

    公开(公告)日:2005-03-22

    申请号:US10453097

    申请日:2003-06-03

    IPC分类号: G01J1/44 G01J1/32

    CPC分类号: G01J1/44

    摘要: A method and apparatus determining an intensity of light flux. First, a photodiode or LED is charged by reverse-biasing to a fixed voltage. The fixed voltage is a sum of a threshold voltage and a predetermined offset voltage. Then, a time to discharge the photodiode to the threshold voltage by a photo current is measured to determine an intensity of light producing the photocurrent.

    摘要翻译: 确定光通量强度的方法和装置。 首先,通过对固定电压进行反向偏置来对光电二极管或LED进行充电。 固定电压是阈值电压和预定偏移电压之和。 然后,测量通过光电流将光电二极管放电到阈值电压的时间,以确定产生光电流的光的强度。

    Method for operating a parallel processing system and related apparatus
    10.
    发明授权
    Method for operating a parallel processing system and related apparatus 失效
    用于操作并行处理系统和相关装置的方法

    公开(公告)号:US4965882A

    公开(公告)日:1990-10-23

    申请号:US103364

    申请日:1987-10-01

    IPC分类号: G06N5/04

    CPC分类号: G06N5/047

    摘要: A method for operating a parallel processor system implements a beta-partitioning algorithm. According to that method, groups of working memory elements are identified which satisfy each of the conditions of all of several production rules. Then, sequences of sets are formed each corresponding to one of the production rules. The sets represent combinations of working memory elements which satisfy some or all of the conditions for the corresponding production rule. At some point during the formation of sets, the sets are subdivided into relatively equal-size subsets, each of which is assigned to a different processor. Each processor, which previously had been performing the same operations as the other processors, continues processing only its assigned subset.

    摘要翻译: 一种用于操作并行处理器系统的方法实现了β分割算法。 根据该方法,识别满足几种生产规则的所有条件的工作记忆元件组。 然后,对应于生产规则之一形成套组序列。 这些集合表示满足相应生产规则的一些或所有条件的工作存储器元件的组合。 在集合的形成过程中的某个时刻,集合被细分成相对大小的子集,每个子​​集分配给不同的处理器。 以前已经执行与其他处理器相同操作的每个处理器继续仅处理其分配的子集。