公开(公告)号：US5208846A

公开(公告)日：1993-05-04

申请号：US758971

申请日：1991-09-03

申请人： John A. Hammond ,  James W. Edwards ,  Andre Lubarsky, Jr.

发明人： John A. Hammond ,  James W. Edwards ,  Andre Lubarsky, Jr.

IPC分类号： H04M1/24 ,  H04M3/24 ,  H04M3/26 ,  H04M3/30 ,  H04M11/00 ,  H04Q11/04

CPC分类号： H04Q11/045 ,  H04M3/245

摘要： A subscriber loop tester for testing local loops of telephone switching networks has a partitioned "U" interface and an internal bus architecture for converting various transceiver circuit output data formats to a common data format. The "U" interface has a high impedance transformer meeting bandwidth and line matching requirements for different line codes and protocols for ISDN telecommunication systems. The transformer is selectively coupled to option cards each containing circuitry having AC and DC terminations matching specific line codes and protocols for ISDN telecommunications systems and other types of telecommunications systems. The option cards further contain programmable attenuators for producing a proper nominal signal level as a function of the specific line code and protocol and providing variable insertion loss. A high speed bus is selectively coupled to the option cards for coupling the formatted transceiver circuit output data between the cards and a digital bus translator. The digital bus translator selectively configures the high speed bus for the transceiver output data format of the selected option card and converts the formatted output data received on the high speed bus to a common data format. Multiple source and destination audio paths in the subscriber loop tester are controlled by an audio switching matrix.

公开(公告)号：US06933931B2

公开(公告)日：2005-08-23

申请号：US10646614

申请日：2003-08-21

申请人： Andre Lubarsky, Jr. ,  Don Whitaker ,  Paul Alexander

发明人： Andre Lubarsky, Jr. ,  Don Whitaker ,  Paul Alexander

IPC分类号： G06F3/041 ,  G06F3/044 ,  G06K20060101 ,  G08C21/00 ,  G09G5/00

CPC分类号： G06F3/0418 ,  G06F3/044

摘要： An apparatus for sensing the location of user input is disclosed. The apparatus may include a display unit including a screen having a resistive coating disposed on its surface. The apparatus may utilize a sensing signal emanating from the screen through the resistive coating. A sensor array may be disposed about the screen, and sensing electronics are provided to determine the location of user input on the screen by sensing localized deviations in the amplitude of the sensing signal.

摘要翻译： 公开了用于感测用户输入位置的装置。 该装置可以包括显示单元，其包括设置在其表面上的具有电阻涂层的屏幕。 该装置可以利用从屏幕通过电阻涂层发出的感测信号。 可以围绕屏幕设置传感器阵列，并且提供感测电子装置以通过感测感测信号的振幅中的局部偏差来确定用户输入在屏幕上的位置。

公开(公告)号：US4076970A

公开(公告)日：1978-02-28

申请号：US729585

申请日：1976-10-04

申请人： Andre Lubarsky, Jr. ,  G. Scott Warner ,  Goro R. Tahara

发明人： Andre Lubarsky, Jr. ,  G. Scott Warner ,  Goro R. Tahara

IPC分类号： H04M3/22

CPC分类号： H04M3/22

摘要： A switching system for connecting any one of a plurality of electrical circuits to any one of a plurality of test positions, wherein a central controller including a microprocessor directs, in a pre-programmed manner, all necessary switching functions. In the preferred embodiment, the electrical circuits are telephone circuits and the test positions include test ports positioned in various locations around a central office so that any of the telephone circuits can be accessed for testing from any of the test ports. The controller communicates with each of the test ports and controls switching units one at a time over a common control bus.

摘要翻译： 一种用于将多个电路中的任一个连接到多个测试位置中的任何一个的切换系统，其中包括微处理器的中央控制器以预先编程的方式指示所有必要的切换功能。 在优选实施例中，电路是电话电路，并且测试位置包括位于中心局周围的不同位置的测试端口，使得可以访问任何电话电路以从任何测试端口进行测试。 控制器与每个测试端口进行通信，并通过公共控制总线一次一个地控制切换单元。