公开(公告)号：US07826839B1

公开(公告)日：2010-11-02

申请号：US11343139

申请日：2006-01-30

Applicant: David C. Nicholas

Inventor： David C. Nicholas

IPC: H04Q7/20

CPC classification number: H04K3/42 ,  H04K3/28 ,  H04K3/41 ,  H04K2203/34

Abstract: A method of disrupting communications reception of a target radio receiver. A plurality of transmitters transmit a noise signal toward the target radio transceiver. Each of the plurality of transmitters has a receiver associated therewith A first transmitter ceases transmitting a noise signal at a pre-determined time. A receiver associated with the first transmitter receives information from another of the plurality of transmitters when the first transmitter has ceased transmitting the noise signal. The first transmitter resumes the transmission of the noise signal after the information has been transmitted.

Abstract translation: 一种破坏目标无线电接收机的通信接收的方法。 多个发射机向目标无线电收发机发送噪声信号。 多个发射机中的每一个具有与其相关联的接收机。第一发射机停止在预定时间发射噪声信号。 当第一发射机已经停止发送噪声信号时，与第一发射机相关联的接收机从多个发射机中的另一个发射机接收信息。 在发送信息之后，第一发射机恢复发送噪声信号。

公开(公告)号：US4748665A

公开(公告)日：1988-05-31

申请号：US750796

申请日：1985-07-01

Applicant: David C. Nicholas

Inventor： David C. Nicholas

IPC: H04B3/20

CPC classification number: H04B3/20

Abstract: An analog echo suppression circuit is used with a telephony 2-wire circuit to 4-wire circuit interface. The 2-wire circuit carries a first signal and the 4-wire circuit carries a second signal. Each circuit has an input port and an output port. The interface produces an echo signal on the output of the 2-wire circuit when the second signal is received at the input port of the 2-wire circuit. A first communication channel connects the output of the 4-wire circuit to the input of the 2-wire circuit. A second communication channel connects the output of the 2-wire circuit to the input of the 4-wire circuit and series analog switches or transmission gates can interrupt the second channel. A comparator circuit receives the first and second signals from the first and second channels and has first and second outputs. First and second controller devices are operatively connected to the comparator circuit and provide signals such that, if an echo signal is present, the one analog switch interrupts the second channel and another analog switch grounds the input to the 4-wire circuit.

Abstract translation: 模拟回声抑制电路用于电话2线电路到4线电路接口。 2线电路携带第一信号，4线电路携带第二信号。 每个电路都有一个输入端口和一个输出端口。 当在2线电路的输入端口接收到第二个信号时，该接口在2线电路的输出端产生一个回波信号。 第一通信通道将4线电路的输出连接到2线电路的输入端。 第二通信通道将2线电路的输出连接到4线电路的输入端，并且串联模拟开关或传输门可以中断第二通道。 比较器电路从第一和第二通道接收第一和第二信号，并具有第一和第二输出。 第一和第二控制器设备可操作地连接到比较器电路并提供信号，使得如果存在回波信号，则一个模拟开关中断第二通道，另一个模拟开关将输入端接地到4线电路。

公开(公告)号：US4228535A

公开(公告)日：1980-10-14

申请号：US15028

申请日：1979-02-26

Applicant: Harold W. Workman ,  David C. Nicholas

Inventor： Harold W. Workman ,  David C. Nicholas

IPC: H04Q11/06 ,  H04Q11/04 ,  H04J3/14

CPC classification number: H04Q11/06

Abstract: Two identical and interconnected switch matrices are used wherein one is "on-line" and the other is "off-line". If an individual module in the on-line switch fails, an identical module in the standby matrix is switched in to carry traffic. The failed module can then be replaced with an operable unit. The feature of modularity not only greatly enhances the performance of the switch matrix but also provides for quick restoration of the switching apparatus to a preferred configuration of operability.

Abstract translation: 使用两个相同和互连的开关矩阵，其中一个是“在线”，另一个是“离线”。 如果在线交换机中的单个模块发生故障，则备用矩阵中的相同模块被切换以携带流量。 然后可以用可操作的单元替换故障模块。 模块化的特征不仅大大提高了开关矩阵的性能，而且提供了将开关装置快速恢复到可操作性的优选配置。

公开(公告)号：US07826372B1

公开(公告)日：2010-11-02

申请号：US10811000

申请日：2004-03-26

Applicant: Fred D. Mabe ,  Ian R. Worden ,  David C. Nicholas ,  Stephen M. Clark ,  Albert J. Anderson ,  James A. Stevens

Inventor： Fred D. Mabe ,  Ian R. Worden ,  David C. Nicholas ,  Stephen M. Clark ,  Albert J. Anderson ,  James A. Stevens

IPC: G01R31/08

CPC classification number: H04W40/24 ,  H04L45/122 ,  H04L45/124 ,  H04L45/20 ,  H04L45/24

Abstract: A process for use in conjunction with a communications network routing protocol that automatically adjusts for congestion that may occur due to the presence of advantaged and partially disadvantaged nodes. The network nodes check to determine if they are advantaged or partially disadvantaged. Advantaged nodes may, for example, be airborne or satellite nodes having a high degree of network connectivity. Partially disadvantaged nodes may comprise nodes that are low on power. Advantaged nodes and partially disadvantaged nodes adjust the network metrics entered into the routing tables they use to advertise their routing information over the network to show longer pathways through such nodes. As a result the other nodes in the network reduce the amount of network traffic routed through advantaged and disadvantaged nodes.

Abstract translation: 与通信网络路由协议一起使用的过程，其自动调整由于存在优势和部分不利的节点而可能发生的拥塞。 网络节点检查以确定它们是有利的还是部分处于不利地位。 有利的节点可以例如是具有高度网络连接性的机载或卫星节点。 部分处于劣势的节点可以包括功率低的节点。 受影响的节点和部分处于不利地位的节点调整输入到路由表中的网络度量，以通过网络通告其路由信息，以显示通过这些节点的更长的路径。 因此，网络中的其他节点减少了通过优势和弱势节点路由的网络流量。

公开(公告)号：US07529265B1

公开(公告)日：2009-05-05

申请号：US10308948

申请日：2002-12-03

Applicant: David C. Nicholas

Inventor： David C. Nicholas

IPC: H04L12/413

CPC classification number: H04W16/14 ,  H04W74/08

Abstract: A system and method of determining an available frequency sub-band for radio traffic in a multiple node radio network is disclosed. The method and system provide for communication over a radio frequency band, the radio frequency band comprising radio frequency sub-bands and providing a radio node group of at least one radio communications devices configured to broadcast and receive on the radio frequency band. The system and method create a time for a window of radio broadcast silence on at least one of the radio frequency sub-bands by the radio node group. The system and method survey the at least one of the radio frequency sub-bands during the window of radio broadcast silence. The system and method choose, based on the survey, a radio frequency sub-band for broadcast from the radio frequency band.

Abstract translation: 公开了一种确定多节点无线电网络中无线电业务的可用频率子带的系统和方法。 所述方法和系统提供无线电频带上的通信，所述无线电频带包括射频子带，并且提供被配置为在无线电频带上广播和接收的至少一个无线电通信设备的无线电节点组。 系统和方法为无线电节点组的至少一个射频子带上的无线广播静音窗口创建时间。 该系统和方法在无线电广播静音窗口中对至少一个射频子频带进行调查。 该系统和方法根据调查选择了用于从无线电频带广播的射频子带。

公开(公告)号：US5022074A

公开(公告)日：1991-06-04

申请号：US750825

申请日：1985-07-01

Applicant: David C. Nicholas

Inventor： David C. Nicholas

IPC: H04B3/20

CPC classification number: H04B3/20

Abstract: A digital echo suppression circuit in a four-wire digital telephony circuit having an echo from a local or remote connection to a two-wire circuit or other echo source. The invention incorporates a simple method of using the sample pairs from the first and second sampling circuit to produce a control signal from a control circuit. If the subscriber signal is "louder" than the network signal, then the subscriber signal is passed through. If the network signal is louder than the subscriber signal, the interrupter is activated and a zero level is substituted for the subscriber signal in transmissions toward the network. The invention uses the scheme of comparing instantaneous signal amplitude and using the larger amplitude to set a threshold value. The signal setting the threshold then remains the "loudest" until such time as the other signal can exceed the threshold. The threshold is slowly decremented, but the original signal may refresh the threshold to a higher level if a new peak value replaces the old threshold value with the new peak value. The identity of the input network or subscriber producing the threshold is stored. If the current threshold is the result of a network signal, the interrupter is activated and echo is suppressed. If the current threshold is the result of a network signal, the interrupter is activated and echo is suppressed. If the current threshold is the result of a subscriber signal sample, then the interrupter is deactivated and subscriber signals are transmitted onward toward the network.

Abstract translation: 一种四线数字电话电路中的数字回声抑制电路，其具有从本地或远程连接到二线电路或其他回波源的回波。 本发明结合了使用来自第一和第二采样电路的采样对产生来自控制电路的控制信号的简单方法。 如果用户信号比网络信号“大”，则用户信号通过。 如果网络信号比用户信号大，则中断器被激活，并且在向网络的传输中替换用户信号的零电平。 本发明使用比较瞬时信号幅度并使用较大幅度来设置阈值的方案。 然后，设置阈值的信号将保持“最大”，直到另一个信号可以超过阈值为止。 阈值缓慢递减，但是如果新的峰值用新的峰值替换旧的阈值，则原始信号可以将阈值刷新到更高的水平。 存储产生阈值的输入网络或订户的身份。 如果当前阈值是网络信号的结果，则断续器被激活并且回波被抑制。 如果当前阈值是网络信号的结果，则断续器被激活并且回波被抑制。 如果当前阈值是用户信号采样的结果，则中断器被去激活，并且用户信号向前发送到网络。

公开(公告)号：US3958084A

公开(公告)日：1976-05-18

申请号：US510202

申请日：1974-09-30

Applicant: David C. Nicholas

Inventor： David C. Nicholas

IPC: H04M3/56

CPC classification number: H04M3/569

Abstract: A method and apparatus for providing improved telephonic conferences is presented. A speaker is selected for each conferee from the signals of the other conferees. The peak values of the speaker signal establish a variable reference level which another conferee must first exceed in order to become the new speaker and establish a new reference level. The reference level is continuously allowed to decay so that new speakers may gain the floor when the current speaker's peak signals fall below the peak signals of another speaker. Both an analog and a digital embodiment of the invention are presented. A specific feature of the invention involves directing all signals of other conferees to all conferees and each conferee station selects the loudest signal (maximum amplitude) for that conferee.

Abstract translation: 提出了一种用于提供改进的电话会议的方法和装置。 每个与会者从其他与会者的信号中选出演讲者。 扬声器信号的峰值建立另一个与会者必须首先超过的可变参考水平，以便成为新的演讲者并建立新的参考水平。 参考电平不断被允许衰减，以便当现在的扬声器的峰值信号低于另一个扬声器的峰值信号时，新的扬声器可以获得最大的发言权。 呈现本发明的模拟和数字实施例。 本发明的具体特征涉及将所有参与者的所有信号引导给所有与会者，并且每个与会者选择该与会者的最大信号（最大振幅）。

公开(公告)号：US07907576B1

公开(公告)日：2011-03-15

申请号：US12185755

申请日：2008-08-04

Applicant: David C. Nicholas

Inventor： David C. Nicholas

IPC: H04J3/16

CPC classification number: H04W16/14 ,  H04W74/08

Abstract: A system and method of determining an available frequency sub-band for radio traffic in a multiple node radio network is disclosed. The method and system provide for communication over a radio frequency band, the radio frequency band comprising radio frequency sub-bands and providing a radio node group of at least one radio communications devices configured to broadcast and receive on the radio frequency band. The system and method create a time for a window of radio broadcast silence on at least one of the radio frequency sub-bands by the radio node group. The system and method survey the at least one of the radio frequency sub-bands during the window of radio broadcast silence. The system and method choose, based on the survey, a radio frequency sub-band for broadcast from the radio frequency band.

Abstract translation: 公开了一种确定多节点无线电网络中无线电业务的可用频率子带的系统和方法。 所述方法和系统提供无线电频带上的通信，所述无线电频带包括射频子带，并且提供被配置为在无线电频带上广播和接收的至少一个无线电通信设备的无线电节点组。 系统和方法为无线电节点组的至少一个射频子带上的无线广播静音窗口创建时间。 该系统和方法在无线电广播静音窗口中对至少一个射频子频带进行调查。 该系统和方法根据调查选择了用于从无线电频带广播的射频子带。

公开(公告)号：US4922206A

公开(公告)日：1990-05-01

申请号：US373833

申请日：1989-06-28

Applicant: David C. Nicholas

Inventor： David C. Nicholas

IPC: H04L27/18 ,  H04L27/233

CPC classification number: H04L27/2331 ,  H04L27/233

Abstract: A method is disclosed for demodulating binary differential phase shift keyed signals in the presence of carrier frequency uncertainties. In phase modulation, a data signal is impressed on a carrier frequency to produce a modulated signal. The modulated signal and a corresponding quadrature signal are input to a split delay line, wherein each half of the delay line provides a delay of one-half the data signal bit period. The modulated and the delayed signals are input to a summing junction to provide a combined output independent of the carrier frequency. Thus, the method of demodulation is insensitive to Doppler shifts and other carrier frequency offsets.

Abstract translation: 公开了一种在存在载波频率不确定性的情况下解调二进制差分相移键控信号的方法。 在相位调制中，将数据信号施加在载波频率上以产生调制信号。 调制信号和对应的正交信号被输入到分离延迟线，其中延迟线的每一半提供数据信号位周期的一半的延迟。 调制和延迟的信号被输入到求和结以提供独立于载波频率的组合输出。 因此，解调方法对多普勒频移和其他载波频率偏移不敏感。

公开(公告)号：US4912701A

公开(公告)日：1990-03-27

申请号：US137038

申请日：1987-12-23

Applicant: David C. Nicholas

Inventor： David C. Nicholas

IPC: H04L12/64 ,  H04Q11/04

CPC classification number: H04L12/64 ,  H04Q11/04

Abstract: A packet switching module connects to a multiplexed carrier line which has at least an input line and an output line. A receiver circuit receives an information frame over the multiplexed carrier line. The information frame has a predetermined format which includes a physical destination address. A plurality of processing modules and a controller are connected to a common memory and switching the packets according to the destination addresses. The new information frame is outputted on the multiplexed carrier line by a transmitter circuit.

Abstract translation: 分组交换模块连接到至少具有输入线和输出线的复用载波线。 接收机电路在复用的载波线路上接收信息帧。 信息帧具有包括物理目的地地址的预定格式。 多个处理模块和控制器连接到公共存储器，并根据目的地址切换数据包。 新的信息帧由发射机电路在复用的载波线上输出。