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    • 1. 发明申请
    • UPSTREAM BANDWIDTH CONDITIONING DEVICE
    • UPSTREAM带宽调节装置
    • WO2010117495A1
    • 2010-10-14
    • PCT/US2010/024276
    • 2010-02-16
    • JOHN MEZZALINGUA ASSOCIATES, INC.PALINKAS, RaymondALKAN, Ph.D., Erdogan
    • PALINKAS, RaymondALKAN, Ph.D., Erdogan
    • H04N7/10H04N7/12
    • H04N7/17309H04L12/2801H04N7/102H04N21/6168
    • An upstream bandwidth conditioning device that can be inserted into a signal transmission line of a CATV system on a premise of a user includes a main signal path and a filter array including a plurality of discrete signal filters coupled to the main signal path. Each of the signal filters is configured to reduce a signal level of at least one frequency portion of an upstream bandwidth. The device further includes a controller configured to select between a plurality of states. In at least two of the states at least one of the signal filters is selected such that a signal level of a lower frequency portion of the upstream bandwidth and a signal level of an higher frequency portion of the upstream bandwidth are reduced by a greater amount than a signal level of an intermediate frequency portion, which includes frequencies arranged between the lower frequency portion and the higher frequency portion.
    • 可以在用户的​​前提下插入到CATV系统的信号传输线中的上行带宽调节装置包括主信号路径和包括耦合到主信号路径的多个离散信号滤波器的滤波器阵列。 每个信号滤波器被配置为降低上行带宽的至少一个频率部分的信号电平。 该设备还包括被配置为在多个状态之间进行选择的控制器。 在至少两个状态中,选择信号滤波器中的至少一个,使得上行带宽的较低频率部分的信号电平和上行带宽的较高频率部分的信号电平减小了大于 中间频率部分的信号电平,其包括布置在较低频率部分和较高频率部分之间的频率。
    • 4. 发明申请
    • ALL-PASS NETWORK FOR DATA TRANSMISSION OVER A CATV SYSTEM
    • 用于CATV系统数据传输的全通过网络
    • WO2006020392A2
    • 2006-02-23
    • PCT/US2005/026584
    • 2005-07-27
    • JOHN MEZZALINGUA ASSOCIATES, INC.SHAFER, steven, K.PALINKAS, RaymondOLCEN, Ahmet, Burak
    • SHAFER, steven, K.PALINKAS, RaymondOLCEN, Ahmet, Burak
    • H04N7/173
    • H04N7/17309H04N7/102H04N21/6118
    • A cable system, and a method for configuring a path of a cable system, wherein the group delay caused by one or more amplifiers having diplex filter networks is substantially equalized over all frequencies within a predetermined band by the use of one or more all-pass delay equalizers. A method of configuring a path includes steps of determining a delay versus frequency characteristic of the path within the predetermined frequency band, and providing from one to a plurality of all-pass delay equalizers in the path, wherein a collective delay versus frequency characteristic of the all-pass delay equalizer(s) within a predetermined frequency band is a mirror image of that caused by the amplifier(s), such that all frequencies within the predetermined frequency band are delayed by substantially the same amount and hence all frequency components of a signal arrive at a receiver at substantially the same time.
    • 一种电缆系统和一种用于配置电缆系统的路径的方法,其中由具有双工滤波器网络的一个或多个放大器引起的群时延在预定频带内的所有频率上被 使用一个或多个全通延迟均衡器。 一种配置路径的方法包括以下步骤:确定预定频带内的路径的延迟对频率特性;以及从路径中的一个到多个全通延迟均衡器提供该集合的延迟与频率特性, 预定频带内的全通延迟均衡器是由放大器引起的全通延迟均衡器的镜像,使得预定频带内的所有频率被延迟基本上相同的量,并且因此所有频率分量 信号几乎同时到达接收器。