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公开(公告)号：US06553075B1
公开(公告)日：2003-04-22
申请号：US09228686
申请日：1999-01-12
申请人： David W. McGhee , James R. Sisk
发明人： David W. McGhee , James R. Sisk
IPC分类号： H04B110
CPC分类号： H04B1/1027 , H04B3/46 , H04L1/20
摘要： A system to analyze and compensate for noise on a transmission line (35) is provided. The system comprises a transmission card which includes a transceiver (32), and a microprocessor (34) attached to the transceiver (32). The system also comprises a transmission line (35) coupled to the transceiver (32) and at least one customer premise equipment (38) coupled to the transceiver (32) by the transmission line (35). The microprocessor (34) is operable to monitor the transmission line (32) and determine the signal-to-noise ratio on the line as a function of frequency, and adjust the rate of transmission in terms of bandwidth in terms of bits as a function of frequency.
摘要翻译： 提供了一种用于分析和补偿传输线（35）上的噪声的系统。 该系统包括传输卡，其包括收发器（32）和附接到收发器（32）的微处理器（34）。 该系统还包括耦合到收发器（32）的传输线（35）和通过传输线（35）耦合到收发器（32）的至少一个客户驻地设备（38）。 微处理器（34）可操作以监测传输线（32）并确定线路上的信噪比作为频率的函数，并且根据位的带宽调整传输速率作为一个功能 的频率。
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公开(公告)号：US20120257626A1
公开(公告)日：2012-10-11
申请号：US13080906
申请日：2011-04-06
IPC分类号： H04L12/56
CPC分类号： H04L45/7453 , H04L43/028 , H04L43/12
摘要： Systems and methods are disclosed for in-line removal of duplicate network packets in network packet streams operating at high speeds (e.g., 1-10 Gbps and above). A hash generator applies at least one hash algorithm to incoming packets to form one or more different hash values. The packet deduplication systems and methods then use the one or more hash values for each incoming packet to identify data stored for previously received backs and use the identified data to determine if incoming packets are duplicate packets. Duplicate packets are then removed from the output packet stream thereby reducing duplicate packets for downstream processing. A deduplication window can further be utilized to limit the amount of data stored for previous packets based upon one or more parameters, such as an amount of time that has passed and/or a number of packets for which data has been stored. These parameters can also be selected, configured and/or adjusted to achieve desired operational objectives.
摘要翻译： 公开的系统和方法用于在以高速（例如，1-10Gbps及更高）运行的网络分组流中在线去除重复的网络分组。 散列生成器将至少一个散列算法应用于传入数据包以形成一个或多个不同的哈希值。 然后，分组重复数据删除系统和方法使用每个输入分组的一个或多个散列值来识别为先前接收的背部存储的数据，并使用所识别的数据来确定传入分组是否是重复的分组。 然后从输出分组流中删除重复的分组，从而减少用于下游处理的重复分组。 可以进一步利用重复数据消除窗口来基于一个或多个参数（例如已经经过的时间量和/或数据已被存储的数据包的数量）来限制对先前分组所存储的数据量。 也可以选择，配置和/或调整这些参数以实现所需的操作目标。
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公开(公告)号：US06658049B1
公开(公告)日：2003-12-02
申请号：US09228688
申请日：1999-01-12
申请人： David W. McGhee , Richard L. House
发明人： David W. McGhee , Richard L. House
IPC分类号： H04B1702
CPC分类号： H04B3/36
摘要： A system for repeating an xDSL signal (14) is disclosed. The system comprises a receiver (16) operable to receive the xDSL signal (14), a first analog front end (18) coupled to the receiver (16) and operable to convert the xDSL signal to a digital signal, and a series of digital signal processors (20, 22) coupled to the first analog front end (18) and operable to remove noise elements from the digital signal. Also provided is a second analog front end (24) coupled to the second digital signal processor (22) and operable to convert the digital signal back to the analog domain. A driver circuit (26) is operable to increase the signal strength of the analog signal and retransmits it over a new length of wiring.
摘要翻译： 公开了一种用于重复xDSL信号（14）的系统。 该系统包括可操作以接收xDSL信号（14）的接收器（16），耦合到接收器（16）并可操作以将xDSL信号转换为数字信号的第一模拟前端（18）和一系列数字信号 信号处理器（20,22），耦合到第一模拟前端（18）并且可操作以从数字信号中去除噪声元件。 还提供了耦合到第二数字信号处理器（22）并可操作以将数字信号转换回模拟域的第二模拟前端（24）。 驱动器电路（26）可操作以增加模拟信号的信号强度并在新的布线长度上重新传输。
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公开(公告)号：US6154133A
公开(公告)日：2000-11-28
申请号：US234688
申请日：1999-01-21
IPC分类号： G08B13/196 , G08B13/00
CPC分类号： G08B13/19643 , G08B13/19682 , G08B13/19695
摘要： An exit guard system automatically detects movement of a subject along an exit path in an unauthorized direction. A first video camera is positioned for video imaging movement of a subject along the path, while a second video camera images the subject for identification. Multiple video motion detectors operate in conjunction with the first video camera to determine direction of movement of a subject along the path. A CPU operates with the video motion detectors under an exit guard program to provide a watching mode, during which frames of the second video camera are continuously grabbed and saved. Audible and/or visual alarm signaling devices are operated by the CPU in an alarm mode in response to traffic of a subject in the unauthorized direction. A video monitor displays modes of operation of the system, and control devices allow operator selection and control of modes of operation of the system. Remote access to the system for control, monitoring or other purposes is provided by data modem feature.Method of using such system for guarding movement of a subject along the path is disclosed.
摘要翻译： 出口保护系统在未经授权的方向自动检测物体沿出口路径的移动。 定位第一摄像机用于沿着路径进行被摄体的视频成像运动，而第二摄像机对被摄体进行成像以进行识别。 多个视频运动检测器与第一摄像机一起操作以确定被摄体沿着路径的移动方向。 CPU在出口保护程序下与视频运动检测器一起操作以提供观看模式，在该模式期间连续抓取并保存第二摄像机的帧。 声音和/或视觉报警信号装置由CPU以报警模式响应于未经授权的方向的被摄体的流量来操作。 视频监视器显示系统的操作模式，并且控制设备允许操作者选择和控制系统的操作模式。 通过数据调制解调器功能提供远程访问系统以进行控制，监视或其他目的。 公开了使用这种系统来保护对象沿着路径的运动的方法。
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公开(公告)号：US08462781B2
公开(公告)日：2013-06-11
申请号：US13080906
申请日：2011-04-06
CPC分类号： H04L45/7453 , H04L43/028 , H04L43/12
摘要： Systems and methods are disclosed for in-line removal of duplicate network packets in network packet streams operating at high speeds (e.g., 1-10 Gbps and above). A hash generator applies at least one hash algorithm to incoming packets to form one or more different hash values. The packet deduplication systems and methods then use the one or more hash values for each incoming packet to identify data stored for previously received backs and use the identified data to determine if incoming packets are duplicate packets. Duplicate packets are then removed from the output packet stream thereby reducing duplicate packets for downstream processing. A deduplication window can further be utilized to limit the amount of data stored for previous packets based upon one or more parameters, such as an amount of time that has passed and/or a number of packets for which data has been stored. These parameters can also be selected, configured and/or adjusted to achieve desired operational objectives.
摘要翻译： 公开的系统和方法用于在以高速（例如，1-10Gbps及更高）运行的网络分组流中在线去除重复的网络分组。 散列生成器将至少一个散列算法应用于传入数据包以形成一个或多个不同的哈希值。 然后，分组重复数据删除系统和方法使用每个输入分组的一个或多个散列值来识别为先前接收的背部存储的数据，并使用所识别的数据来确定传入分组是否是重复的分组。 然后从输出分组流中删除重复的分组，从而减少用于下游处理的重复分组。 可以进一步利用重复数据消除窗口来基于一个或多个参数（例如已经经过的时间量和/或数据已被存储的数据包的数量）来限制对先前分组所存储的数据量。 也可以选择，配置和/或调整这些参数以实现所需的操作目标。
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