会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 3. 发明授权
    • Computer terminal security system
    • 电脑终端安全系统
    • US4430728A
    • 1984-02-07
    • US335972
    • 1981-12-29
    • James E. BeitelCharles R. BruceGary R. CookCharles F. Mosier, Jr.Edward L. Sartore
    • James E. BeitelCharles R. BruceGary R. CookCharles F. Mosier, Jr.Edward L. Sartore
    • G06F15/00G06F1/00G06F15/16G06F21/00H04L9/32G06F3/04H04L9/00H04M11/00
    • G06F21/31
    • The invention provides a system for securing the access of a remote computer terminal (130) to a centrally located host computer (300). The system includes a first security circuit (200) interconnected with a calling telephone (100), a calling modem (110), and the remote computer terminal (130) at the remote location for automatically dialing the number of the called telephone (310) at the location of the central host computer (300). A second security circuit (350) is located at the central host computer (300) and is interconnected with the called telephone (130), the called modem (330), and the central host computer (300). Upon receipt of the user identification code, the second security circuit (350) compares the user identification code with a stored code and, if verified, sends an acknowledgment signal back to the first security circuit (200). At this time, the two security circuits (200 and 350) activate respective solid state switches (260 and 370) to interconnect the host computer (300) with the remote computer terminal (130). A portable memory module (240) is selectively insertable in the first security circuit (200) to selectively activate and deactivate the first security circuit and which contains the secret phone number of the called telephone (310) at the host computer (300) as well as the secret user identification code.
    • 本发明提供了一种用于将远程计算机终端(130)的访问保护到位于中心的主计算机(300)的系统。 该系统包括与主叫电话(100),主叫调制解调器(110)和远程计算机终端(130)互连的第一安全电路(200),用于自动拨打被叫电话(310)的号码, 在中央主机(300)的位置。 第二安全电路(350)位于中央主机(300)处并与被叫电话(130),被叫调制解调器(330)和中央主机计算机(300)互连。 在接收到用户识别码时,第二安全电路(350)将用户识别码与存储的码进行比较,并且如果被验证,则将确认信号发送回第一安全电路(200)。 此时,两个安全电路(200和350)激活相应的固态开关(260和370)以将主计算机(300)与远程计算机终端(130)互连。 便携式存储器模块(240)可选择性地插入到第一安全电路(200)中,以选择性地激活和去激活第一安全电路,并且在主计算机(300)处还包含被叫电话机(310)的秘密电话号码 作为秘密用户识别码。
    • 5. 发明授权
    • Method and apparatus for the detection of pipeline holidays
    • 检测管道假期的方法和装置
    • US4390836A
    • 1983-06-28
    • US177156
    • 1980-08-11
    • Charles R. BruceIrvin D. Johnson
    • Charles R. BruceIrvin D. Johnson
    • G01R31/02G01V3/06G01R31/00G01R31/12G01V3/165
    • G01R31/021G01V3/06
    • A method and apparatus are provided for detecting and locating holidays in an insulating coating of a subterranean pipeline. An alternating current is induced in the portion of the pipeline being surveyed. The pipeline is tracked by sensing the normal electromagnetic field generated by the current flowing in the pipeline. Leakage current indicative of the location and magnitude of a holiday in the pipeline coating is sensed by a pair of coil members adapted to be located above the ground on opposite sides of a vertical plane including the longitudinal axis of the pipeline with the central axes of the coil members being oriented generally parallel to the central axis of the pipeline, whereby an electrical current signal is induced in the pair of coil members by an electromagnetic field generated by the leakage current. The electrical current signal is displayed to provide an indication of the location and magnitude of the holiday.
    • 提供了一种用于在地下管道的绝缘涂层中检测和定位假期的方法和装置。 在被调查的管道的部分引起交流电流。 通过感测由在管道中流动的电流产生的正常电磁场来跟踪流水线。 指示管道涂层中的假期的位置和大小的泄漏电流由适于位于地面上方的垂直平面的相对侧上的一对线圈构件来感测,该垂直平面包括管道的纵向轴线,其中心轴线 线圈构件大致平行于管线的中心轴定向,由此通过由漏电流产生的电磁场在一对线圈构件中感应出电流信号。 显示电流信号以提供假日的位置和幅度的指示。