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    • 3. 发明授权
    • Broadband any point to any point switch matrix
    • 宽带任何点到任何点开关矩阵
    • US06205138B1
    • 2001-03-20
    • US09066209
    • 1998-04-24
    • Perwaiz NihalRobert Alan FlavinThompson Baum VeseckyNorbert George VoglEdward Payson Clarke, Jr.Luis Rodriguez-CortesGeoffrey Hale Purdy
    • Perwaiz NihalRobert Alan FlavinThompson Baum VeseckyNorbert George VoglEdward Payson Clarke, Jr.Luis Rodriguez-CortesGeoffrey Hale Purdy
    • H04L1250
    • H04L49/101H04L49/201H04L49/351H04L49/40
    • This invention is a broadband matrix switch system and method of operation. The broadband matrix switch has N number of broadband inputs, each of the broadband inputs having one or more broadband signals. The matrix switch has M number of broadband outputs. There are N number of splitters. Each of the splitters has a splitter input connected to one of the broadband inputs. Each of the splitters has M number of splitter outputs that produce the splitter output signal. There are N times M number of node switches. Each node switch is uniquely connected to one of the splitter outputs. The node switches have a control input that allows the node switch to pass the respective splitter output signal upon receiving a close command at the control input and to terminate the respective splitter output signal with an input impedance upon receiving an open command at the control input. There are M number of combiners. Each combiner has a combiner output connected to one of the broadband outputs. Each combiner further having N number of combiner inputs. Each of the combiner inputs are connected to one and only one of the inputs through the respective splitter and node switch. The node switches terminate the combiner input with an output impedance upon receiving an open command. The matrix switch further has a controller that sends one or more open commands to selected node switches to connect one or more of the broadband inputs to one or more of the broadband outputs. The matrix switch has many uses in switching and monitoring and analyzing broadband networks, for example, cable TV networks.
    • 本发明是宽带矩阵切换系统及其操作方法。 宽带矩阵切换器具有N个宽带输入,每个宽带输入具有一个或多个宽带信号。 矩阵开关具有M个宽带输出。 有N个分割器。 每个分路器具有连接到一个宽带输入的分路器输入。 每个分路器具有M个分路器输出,产生分路器输出信号。 有N次M个节点交换机。 每个节点开关独特地连接到分路器输出之一。 节点开关具有控制输入,其允许节点开关在接收到控制输入端的关闭命令时通过相应的分离器输出信号,并且在控制输入端接收到打开命令时终止具有输入阻抗的相应分离器输出信号。 有M个组合器。 每个组合器具有连接到其中一个宽带输出的组合器输出。 每个组合器还具有N个组合器输入。 每个组合器输入通过相应的分离器和节点开关连接到一个且仅一个输入。 节点开关在接收到打开命令时终止具有输出阻抗的组合器输入。 矩阵开关还具有控制器,该控制器向所选择的节点开关发送一个或多个打开的命令,以将一个或多个宽带输入连接到一个或多个宽带输出。 矩阵开关在切换和监测和分析宽带网络方面有许多用途,例如有线电视网络。
    • 6. 发明授权
    • System and method for dispatching and scheduling network transmissions with feedback
    • 用反馈调度和调度网络传输的系统和方法
    • US06959327B1
    • 2005-10-25
    • US09649954
    • 2000-08-29
    • Norbert George VoglGeoffrey Hale PurdyRobert Alan FlavinYuan FengEdward Payson Clarke, Jr.
    • Norbert George VoglGeoffrey Hale PurdyRobert Alan FlavinYuan FengEdward Payson Clarke, Jr.
    • G06F15/16H04L12/56H04L29/08
    • H04L67/325H04L47/26H04L47/50H04L47/56H04L49/90H04L67/322
    • A computer dispatcher connected to one or more respective network buffers has stored file lists that identify one or more of the files in the database that are to be transmitted over networks connected to the respective network buffer. A scheduler(s) schedule one or more portions of one or more of the files to be written to the respective network buffers by defining transmission criteria about each of the files in the file list. These transmission criteria include a quantity to transmit criteria, defining a quantity of one or more of the portions of the respective file to transmit, and one or more release times. The release times define the time at which the respective portion is to be written to the network buffer. The system includes a dispatching process that determines an available space on one or more of the network buffers and a current system time. The dispatching process determines if the system time is greater than or equal to one of the release times and further takes a minimum value of the available space and the quantity of the respective portion. The dispatching process then writes the minimum value of the respective portion to one or more of the network buffers. A feedback mechanism, e.g. a quantity completion measure, is used to estimate a completion time of the writing of the respective portion to the respective network buffer. The scheduler then reschedules one or more of the portions if one or more of the portions can not be scheduled to meet the respective transmission criteria.
    • 连接到一个或多个相应网络缓冲器的计算机调度器具有存储的文件列表,其识别数据库中将要通过连接到相应网络缓冲器的网络发送的一个或多个文件。 调度器通过定义关于文件列表中的每个文件的传输标准来调度要写入各个网络缓冲器的一个或多个文件的一个或多个部分。 这些传输标准包括传输标准的数量,定义要发送的相应文件的一部分或多个部分的数量,以及一个或多个释放时间。 释放时间定义相应部分要写入网络缓冲区的时间。 该系统包括调度过程,其确定一个或多个网络缓冲器上的可用空间和当前系统时间。 调度过程确定系统时间是否大于或等于其中一个释放时间,并进一步获取可用空间的最小值和相应部分的数量。 然后,调度过程将相应部分的最小值写入一个或多个网络缓冲器。 反馈机制,例如 数量完成度量用于估计相应部分写入到各个网络缓冲器的完成时间。 如果一个或多个部分不能被调度以满足相应的传输标准,则调度器然后重新调度一个或多个部分。
    • 7. 发明授权
    • Selecting and monitoring signal lines with spurious transients in broadband network
    • 在宽带网络中选择和监控带有虚假瞬变的信号线
    • US06291983B1
    • 2001-09-18
    • US09066278
    • 1998-04-24
    • Edward Payson Clarke, Jr.Robert Alan FlavinPerwaiz NihalGeoffrey Hale PurdyNorbert George Vogl
    • Edward Payson Clarke, Jr.Robert Alan FlavinPerwaiz NihalGeoffrey Hale PurdyNorbert George Vogl
    • G01R1900
    • H04B3/46H04N17/00
    • The invention is a broadband network monitoring system and method. The system has one or more RF carrier generators that generate one or more generator signals, called a reference signal, each of the generator signals having a generator signal frequency. One or more RF transient detectors sense a line signal on one or more broadband lines in the broadband network. Each line signal has one or more test signals applied by a remote RF carrier generator. Each test signal has a frequency equal to one of the reference signals. Each RF transient detector senses and compares the test signal and the reference signal in various ways to produce a transient indicator when the test signal and reference/generator signal are not the same. The transient indicator indicates that there may be a perturbation or some other problem in the respective broadband line. A controller is connected to each of the RF transient detectors and controls an RF switch and an analyzer. The RF switch has two or more inputs connected to each respective RF detector and one output connected to the analyzer. When the controller receives a transient indicator, it controls the switch to connect the broadband line producing the transient indicator to the analyzer and, in a preferred embodiment, starts the analyzer. In this way, all of the broadband lines can be monitored and analyzed for perturbations using a single analyzer.
    • 本发明是一种宽带网络监控系统及方法。 该系统具有一个或多个RF载波发生器,其产生称为参考信号的一个或多个发生器信号,每个发生器信号具有发生器信号频率。 一个或多个RF瞬态检测器感测宽带网络中的一个或多个宽带线路上的线路信号。 每个线路信号具有由远程RF载波发生器施加的一个或多个测试信号。 每个测试信号具有等于参考信号之一的频率。 每个射频瞬态检测器以各种方式检测并比较测试信号和参考信号,以便在测试信号和参考/发生器信号不相同时产生瞬态指示。 瞬态指示符表示相应宽带线路中可能存在扰动或其他问题。 控制器连接到每个RF瞬态检测器,并控制RF开关和分析器。 RF开关具有两个或更多个输入,其连接到每个相应的RF检测器,一个输出连接到分析器。 当控制器接收到瞬态指示器时,它控制开关将产生瞬态指示器的宽带线连接到分析器,并且在优选实施例中,启动分析器。 以这种方式,可以使用单个分析仪监测和分析所有宽带线路的扰动。