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    • 3. 发明授权
    • Remote accessing system for telephone lines
    • 电话线远程接入系统
    • US4029913A
    • 1977-06-14
    • US672406
    • 1976-03-31
    • Richard A. Gunderson
    • Richard A. Gunderson
    • H04B3/46H04M3/26H04M3/28
    • H04B3/46H04M3/26H04M3/28
    • A system for electronically selecting and establishing test loop circuits between a remote test position and any of a large number of communication lines at an access location. Extensive logic circuits at the access end and the test end exchange information and display for the operator if the circuit is ready, if there has been a transmission error or component failure, if the circuits are busy, and other factors that affect the system thereby making the operator's task easier. Fail safe circuits prevent opening of telephone lines by access circuitry malfunctions.
    • 一种用于在远程测试位置和在访问位置处的大量通信线路中的任何一个之间电子选择和建立测试回路电路的系统。 在接入端和测试端的广泛的逻辑电路如果电路准备就绪,交换信息并显示给操作者,如果发生传输错误或组件故障,如果电路正忙,以及其他影响系统的因素,从而使 操作员的任务更简单。 故障安全电路可以防止接入电路故障打开电话线路。
    • 5. 发明授权
    • System and method of avoiding collisions
    • 避免碰撞的系统和方法
    • US06268803B1
    • 2001-07-31
    • US09130279
    • 1998-08-06
    • Richard A. GundersonMichael A. ParisiRichard P. GormanKurtis W. Melin
    • Richard A. GundersonMichael A. ParisiRichard P. GormanKurtis W. Melin
    • G08G116
    • B60Q9/006B60Q9/007B60Q9/008G01S7/003G01S13/726G01S13/878G01S13/931G01S2013/9364G01S2013/9378G01S2013/9382G01S2013/9389G08G1/161G08G1/165G08G1/166
    • A collision avoidance system including a control module, a first transmitting device connected to the control module, wherein the first transmitting device transmits a signal, a first receiving device connected to the control module, wherein the first receiving device receives a return of the signal transmitted from the first transmitting device and transmits a first return signal representative of the return to the control device, a second transmitting device connected to the control module, wherein the second transmitting device transmits a signal, and a second receiving device connected to the control module device, wherein the second receiving device receives a return of the signal transmitted from the second transmitting device and transmits a second return signal representative of the return to the control device, wherein the control module includes measurement circuitry used to measure the first and second return signals and display means for displaying a transverse location of an object as a function of said first and second return signals.
    • 一种防撞系统,包括控制模块,连接到所述控制模块的第一发射设备,其中所述第一发射设备发射信号,连接到所述控制模块的第一接收设备,其中所述第一接收设备接收所传输的信号的返回 从所述第一发送装置发送表示所述返回的第一返回信号到所述控制装置,连接到所述控制模块的第二发送装置,其中,所述第二发送装置发送信号,以及连接到所述控制模块装置的第二接收装置 ,其中所述第二接收设备接收从所述第二发送设备发送的信号的返回,并将表示所述返回的第二返回信号发送到所述控制设备,其中所述控制模块包括用于测量所述第一和第二返回信号的测量电路,以及 用于显示横向位置的显示装置 作为所述第一和第二返回信号的函数的对象。