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1. 发明授权

US4881226A Digital interface of an integrated subscriber line interface circuit 失效
标题翻译：集成用户线接口电路的数字接口
公开(公告)号：US4881226A
公开(公告)日：1989-11-14
申请号：US147429
申请日：1988-01-25
申请人： Robert Lechner , Hans-Werner Rudolf , Harald Stader , Norbert Wingerath , Christopher C. A. Priest , Nigel P. Dyer , Robert K. P. Galpin , Pierre Albouy , Robert Le Gougnec , Ramatchandirane Nadaradjane , Marcello Manca , Virgilio Mosca , Antonio Nicastro
发明人： Robert Lechner , Hans-Werner Rudolf , Harald Stader , Norbert Wingerath , Christopher C. A. Priest , Nigel P. Dyer , Robert K. P. Galpin , Pierre Albouy , Robert Le Gougnec , Ramatchandirane Nadaradjane , Marcello Manca , Virgilio Mosca , Antonio Nicastro
IPC分类号： H04Q3/42 , H04Q11/04
CPC分类号： H04Q11/0428
摘要： A digital interface of an integrated subscriber line interface circuit is provided. The interface serves for the connection of a signal processor unit. Individual connections are used as signal inputs in signal entry operation of the interface, and as signal outputs in signal transmission operation. Other connections are used as signal inputs in both operating mode, but receive different signals in each operating mode. One group of connections includes two registers with respective associated decoders to enable switching from one to the other, so that the number of operating instructions that can be represented by means of binary signal value combinations applied to the connections is doubled.
摘要翻译：提供了一种综合用户线接口电路的数字接口。该接口用于连接信号处理器单元。单个连接用作接口信号输入操作中的信号输入，并用作信号传输操作中的信号输出。其他连接用作两种工作模式下的信号输入，但在每种工作模式下都会接收不同的信号。一组连接包括两个具有各自相关联的解码器的寄存器，以使得能够从一个切换到另一个，使得可以通过应用于连接的二进制信号值组合来表示的操作指令的数量加倍。

2. 发明授权

US4893309A Digital interface between at least two subscriber line interface circuits and a processing unit 失效
标题翻译：至少两个用户线接口电路和处理单元之间的数字接口
公开(公告)号：US4893309A
公开(公告)日：1990-01-09
申请号：US147428
申请日：1988-01-25
申请人： Robert Lechner , Hans-Werner Rudolf , Harald Stader , Norbert Wingerath , Christopher C. A. Priest , Nigel P. Dyer , Robert K. P. Galpin , Marcello Manca , Virgilio Mosca , Antonio Nicastro , Pierre Albouy , Robert Le Gougnec , Ramatchandirane Nadaradjane
发明人： Robert Lechner , Hans-Werner Rudolf , Harald Stader , Norbert Wingerath , Christopher C. A. Priest , Nigel P. Dyer , Robert K. P. Galpin , Marcello Manca , Virgilio Mosca , Antonio Nicastro , Pierre Albouy , Robert Le Gougnec , Ramatchandirane Nadaradjane
IPC分类号： H04Q3/42 , H04Q11/04
CPC分类号： H04Q11/0428
摘要： A digital interface between at least two subscriber line interface circuits and a processing unit is described. The interface is configured in the form of a parallel interface. The level of an input/output register and of a control register is allocated, as needed, to the connections of the processing unit. These connections can be operated selectively as inputs or outputs. They can also be operated in two modes, depending upon which type of subscriber line interface circuit (SLIC) is connected. The connections of the last-mentioned units are partially operable as inputs or outputs and partially operable only as inputs but in the input case, selectively for various types of input signals.
摘要翻译：描述了至少两个用户线接口电路和处理单元之间的数字接口。该接口以并行接口的形式配置。根据需要，将输入/输出寄存器和控制寄存器的电平分配给处理单元的连接。这些连接可以选择性地作为输入或输出。它们也可以以两种模式运行，具体取决于用户线路接口电路（SLIC）的连接类型。最后提到的单元的连接部分地可操作为输入或输出，并且仅部分地可用作输入，但在输入情况下，可选择性地用于各种类型的输入信号。

3. 发明授权

US5392327A Termination unit with maintenance facility 失效
标题翻译：带维修设备的终端单元
公开(公告)号：US5392327A
公开(公告)日：1995-02-21
申请号：US993599
申请日：1992-12-21
申请人： Robert K. P. Galpin
发明人： Robert K. P. Galpin
IPC分类号： H04M1/24 , H04M3/00 , H04M3/22 , H04M3/30 , H04Q11/04 , H04J1/16 , H04M3/08
CPC分类号： H04M3/301 , H04Q11/045
摘要： There is a demand for user access to ISDN services at the two-wire interface point. The frequently raised objection to such access is the problem of determining the location of a fault and hence the responsibility for the fault. This is solved by the use of a voltage sensor responsive to a DC voltage less than a normal line feed voltage within a voltage range not used in normal operation to control a switch operative to disconnect a subscriber termination unit from the line, and to provide a known linear terminating impedance for the line for the duration of the application of the DC voltage.
摘要翻译：在两线接口点需要用户访问ISDN服务。经常提出的反对这种访问的问题是确定故障的位置以及故障的责任的问题。这通过使用响应于小于正常操作中不使用的电压范围内的法线输入电压的DC电压的电压传感器来解决，以控制可操作地断开用户终端单元与线路的切换，并且提供在施加直流电压的持续时间内线路的已知线性终端阻抗。

4. 发明授权

US5345496A Remote line test facility 失效
标题翻译：远程线路测试设施
公开(公告)号：US5345496A
公开(公告)日：1994-09-06
申请号：US139335
申请日：1993-10-19
申请人： Robert K. P. Galpin
发明人： Robert K. P. Galpin
IPC分类号： H04B3/46 , H04M1/24 , H04M3/02 , H04M3/30
CPC分类号： H04M3/30 , H04M3/02
摘要： Circuitry is provided for testing telephone lines, the circuitry comprising a loop current ring trip detector and a relay which in operation is used to break normal current to provide an end of call indication, and wherein said relay is also operative in one test mode to switch from said loop current ring detector to a comparator which functions as a test mode detector. The means may also include a second relay which when the circuit is in a second test mode is operated simultaneously with the first relay, the second relay being connected to a bell capacitor the discharge rate of which can be measured by said capacitor, and the comparator output is sequentially monitored to provide information as to the condition of the insulation and regarding bell capacitor and terminal connection.
摘要翻译：提供用于测试电话线路的电路，该电路包括环路电流环路跳闸检测器和在操作中用于断开正常电流以提供呼叫结束指示的继电器，并且其中所述继电器还可以在一个测试模式下操作以切换从所述环路电流环检测器到用作测试模式检测器的比较器。该装置还可以包括第二继电器，当电路处于第二测试模式时与第一继电器同时操作，第二继电器连接到钟形电容器，其放电速率可由所述电容器测量，比较器依次监视输出以提供关于绝缘状况的信息以及关于钟形电容器和端子连接的信息。

5. 发明授权

US4890298A Troposcatter modem receiver 失效
标题翻译：对流媒体调制解调器接收器
公开(公告)号：US4890298A
公开(公告)日：1989-12-26
申请号：US130270
申请日：1987-12-08
申请人： Robert K. P. Galpin
发明人： Robert K. P. Galpin
IPC分类号： H04B7/02 , H04B1/10 , H04B7/08 , H04L1/06
CPC分类号： H04L1/06
摘要： The Troposcatter Modem Receiver includes a combiner, demodulator, baseband filter, a complex coefficient forward equalizer, a detector and a feedback circuit. The combiner is a linear maximal-ratio combiner and receives a plurality of input signals at an intermediate frequency and generates a combined output signal for presentation to the demodulator. The demodulator produces a demodulated signal which is filtered by the baseband filter prior to being presented to a first input of the equalizer. The output of the equalizer is forwarded to the detector which produces an output signal. The signal is fed back by way of the feedback circuit to a second input of the equalizer to modify the output signal.
摘要翻译：对流层散射调制解调器接收机包括组合器，解调器，基带滤波器，复系数前向均衡器，检测器和反馈电路。组合器是线性最大比组合器，并以中间频率接收多个输入信号，并产生用于呈现给解调器的组合输出信号。解调器产生解调信号，该信号在被呈现给均衡器的第一输入之前由基带滤波器滤波。均衡器的输出被转发到产生输出信号的检测器。信号通过反馈电路反馈到均衡器的第二输入端，以修改输出信号。

6. 发明授权

US4360787A Digitally controlled wide ranch automatic gain control 失效
标题翻译：数字控制宽牧场自动增益控制
公开(公告)号：US4360787A
公开(公告)日：1982-11-23
申请号：US186770
申请日：1980-09-12
申请人： Robert K. P. Galpin
发明人： Robert K. P. Galpin
IPC分类号： H03G3/20
CPC分类号： H03G3/3036 , H03G3/30 , H03G3/3015
摘要： In high speed high quality modems it is important to be able to preserve the gain value for the automatic gain control system during breaks in transmission to permit rapid resumption of normal operation. The a.g.c. circuit comprises a basic a.g.c. transistor amplifier whose emitter-collector conductance is varied by a control voltage derived from the envelope of the amplifier output voltage which is well known. The invention involves the use of a digital-to-analog converter which is controlled by a digital-updown counter. The counter is controlled by a window comparator which compares the rectified output voltage of the amplifier with a reference voltage level and upper and lower limits. If the output voltage exceeds either limit, the counter is enabled and the appropriate up or down indication is given. The counter is then clocked to change the drive to the d-to-a converter which thereby changes the conductance of the a.g.c. transistor. The state of the up down counter will be used to maintain the a.g.c. at the last level in the event of a transmission break by inhibiting the clock for the counter.
摘要翻译：在高速高品质调制解调器中，重要的是能够在传输中断期间保留自动增益控制系统的增益值，以便快速恢复正常运行。 a.gc.c. 电路包括基本的a.gc.c. 晶体管放大器的发射极 - 集电极电导通过从众所周知的放大器输出电压的包络导出的控制电压而变化。本发明涉及使用由数字向上计数器控制的数模转换器。计数器由窗口比较器控制，窗口比较器将放大器的整流输出电压与参考电压电平以及上限和下限进行比较。如果输出电压超过任何一个限制，计数器将被使能，并提供适当的上升或下降指示。然后计数器将驱动器更换为d转换器，从而改变a.g.c.的电导。晶体管。升降柜台的状态将用于维持a.gc.c. 在传输中断的最后一级，通过禁止计数器的时钟。

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