-
1.发明授权Using equalization coefficients of end devices in a cable television network to determine and diagnose impairments in upstream channels 有权使用有线电视网络中的终端设备的均衡系数来确定和诊断上游信道中的损伤公开(公告)号：US08526485B2
公开(公告)日：2013-09-03
申请号：US12565185
申请日：2009-09-23
申请人： Robert J. Thompson , Michael J. Cooper , Charles S. Moore , John L. Moran , Marc L. Morrissette
发明人： Robert J. Thompson , Michael J. Cooper , Charles S. Moore , John L. Moran , Marc L. Morrissette
CPC分类号： H04B10/25751
摘要： A system estimates impairment contributions for upstream communications in a cable television system. The system receives equalization coefficients used by end devices in the cable television system. The equalization coefficients are used by equalizers to mitigate distortion in upstream channels for the end devices. The system analyzes the coefficients based on impairment thresholds to determine whether impairment problems exist and to identify the types of impairment problems that exist.
摘要翻译： 系统估计有线电视系统中上游通信的损失贡献。 系统接收有线电视系统中终端设备使用的均衡系数。 均衡器使用均衡系数来减轻终端设备的上行信道中的失真。 系统根据损失阈值分析系数，确定是否存在减值问题，并确定存在的减值问题的类型。
-
2.发明申请USING EQUALIZATION COEFFICIENTS OF END DEVICES IN A CABLE TELEVISION NETWORK TO DETERMINE AND DIAGNOSE IMPAIRMENTS IN UPSTREAM CHANNELS 有权使用电缆电视网络中的终端设备的均衡系数来确定和诊断上游通道的影响公开(公告)号：US20110069745A1
公开(公告)日：2011-03-24
申请号：US12565185
申请日：2009-09-23
申请人： Robert J. Thompson , Michael J. Cooper , Charles S. Moore , John L. Moran , Marc L. Morrissette
发明人： Robert J. Thompson , Michael J. Cooper , Charles S. Moore , John L. Moran , Marc L. Morrissette
CPC分类号： H04B10/25751
摘要： A system estimates impairment contributions for upstream communications in a cable television system. The system receives equalization coefficients used by end devices in the cable television system. The equalization coefficients are used by equalizers to mitigate distortion in upstream channels for the end devices. The system analyzes the coefficients based on impairment thresholds to determine whether impairment problems exist and to identify the types of impairment problems that exist.
摘要翻译： 系统估计有线电视系统中上游通信的损失贡献。 系统接收有线电视系统中终端设备使用的均衡系数。 均衡器使用均衡系数来减轻终端设备的上行信道中的失真。 系统根据损失阈值分析系数，确定是否存在减值问题，并确定存在的减值问题的类型。
-
3.发明授权Method and apparatus for updating equalization coefficients of adaptive pre-equalizers 有权用于更新自适应预均衡器的均衡系数的方法和装置公开(公告)号：US08937992B2
公开(公告)日：2015-01-20
申请号：US13221531
申请日：2011-08-30
申请人： Michael J. Cooper , Charles S. Moore , John L. Moran , Marc L. Morrissette , Robert J. Thompson
发明人： Michael J. Cooper , Charles S. Moore , John L. Moran , Marc L. Morrissette , Robert J. Thompson
CPC分类号： H04L25/03006 , H04L25/03885
摘要： A method and apparatus for updating equalization coefficients of an adaptive pre-equalizer of a network element are provided. The method includes monitoring a communications channel to measure distortion of a communications signal received from the network element and detecting whether a transient impairment is present in the communication signal. When a transient impairment is not detected to be present, a pre-equalization coefficient update is transmitted to the network element. However, when a transient impairment is detected to be present, at least selected ones of the pre-equalization coefficients are scaled before the update is transmitted to the network element or the update is withheld from being transmitted to the network element. An apparatus is also disclosed.
摘要翻译： 提供了一种用于更新网元的自适应预均衡器的均衡系数的方法和装置。 该方法包括监视通信信道以测量从网络单元接收的通信信号的失真并检测通信信号中是否存在瞬时损害。 当没有检测到存在瞬时损害时，将预均衡系数更新发送到网元。 然而，当检测到瞬时损害存在时，在将更新发送到网络元件之前至少选择一个预均衡系数被缩放，或者更新被拒绝发送到网络元件。 还公开了一种装置。
-
4.发明申请METHOD AND APPARATUS FOR UPDATING EQUALIZATION COEFFICIENTS OF ADAPTIVE PRE-EQUALIZERS 有权用于更新自适应均衡器的均衡系数的方法和装置公开(公告)号：US20130051442A1
公开(公告)日：2013-02-28
申请号：US13221531
申请日：2011-08-30
申请人： Michael J. Cooper , Charles S. Moore , John L. Moran , Marc L. Morrissette , Robert J. Thompson
发明人： Michael J. Cooper , Charles S. Moore , John L. Moran , Marc L. Morrissette , Robert J. Thompson
CPC分类号： H04L25/03006 , H04L25/03885
摘要： A method and apparatus for updating equalization coefficients of an adaptive pre-equalizer of a network element are provided. The method includes monitoring a communications channel to measure distortion of a communications signal received from the network element and detecting whether a transient impairment is present in the communication signal. When a transient impairment is not detected to be present, a pre-equalization coefficient update is transmitted to the network element. However, when a transient impairment is detected to be present, at least selected ones of the pre-equalization coefficients are scaled before the update is transmitted to the network element or the update is withheld from being transmitted to the network element. An apparatus is also disclosed.
摘要翻译： 提供了一种用于更新网元的自适应预均衡器的均衡系数的方法和装置。 该方法包括监视通信信道以测量从网络单元接收的通信信号的失真并检测通信信号中是否存在瞬时损害。 当没有检测到存在瞬时损害时，将预均衡系数更新发送到网元。 然而，当检测到瞬时损害存在时，在将更新发送到网络元件之前至少选择一个预均衡系数被缩放，或者更新被拒绝发送到网络元件。 还公开了一种装置。
-
5.发明授权Efficient use of trusted third parties for additional content-sharing security 有权有效利用信任的第三方进行额外的内容共享安全公开(公告)号：US07742697B2
公开(公告)日：2010-06-22
申请号：US11470034
申请日：2006-09-05
CPC分类号： H04B10/0773
摘要： Network elements are identified as being connected to optical nodes by instructing two network elements in a spectrum group of the CMTS to transmit at frequencies f1 and f2, respectively. Frequencies f1 and f2 are selected such that they produce intermodulation distortions (intermods) in the laser transmitter at f3 when combined. If intermods are produced which exceed a predetermined threshold, then the two network elements are determined to be on the same node. If the total power of the signal by the laser transmitter exceeds an impact threshold, then the test is stopped and new network elements are selected for testing.
摘要翻译： 通过指示CMTS的频谱组中的两个网络单元分别以频率f1和f2进行发送，将网络元件识别为连接到光节点。 选择频率f1和f2使得它们在组合时在f3处产生激光发射机中的互调失真（intermods）。 如果产生超过预定阈值的互调，则确定两个网络元件在同一节点上。 如果激光发射机的信号总功率超过冲击阈值，则停止测试，并选择新的网络元件进行测试。
-
6.发明申请METHOD AND APPARATUS FOR DETERMINING THE TOTAL POWER MARGIN AVAILABLE FOR AN HFC NETWORK 审中-公开用于确定可用于HFC网络的总功率损耗的方法和装置公开(公告)号：US20070245177A1
公开(公告)日：2007-10-18
申请号：US11551014
申请日：2006-10-19
IPC分类号： G06F11/00
CPC分类号： H04L12/2801 , H04L43/0847 , H04L43/16 , H04L43/50
摘要： The available power margin in a network is determined by increasing the transmission power levels of selected network elements while transmitting a test signal. The quality of the test signal is measured during the successive increases in power level of the selected network elements by measuring the error rate of the test signal. Once the error rate of the test signal reaches a predetermined threshold, the power levels of the signals on the network are determined. The power margin is determined by the difference in the baseline power level on the network and the power level at which the error rate of the test signal exceeded the threshold.
摘要翻译： 通过在发送测试信号的同时提高所选网元的发送功率电平来确定网络中的可用功率余量。 通过测量测试信号的误码率，在所选网元的功率电平连续增加期间测量测试信号的质量。 一旦测试信号的错误率达到预定的阈值，就确定网络上信号的功率电平。 功率余量由网络上的基准功率电平的差异和测试信号的误码率超过阈值的功率电平决定。
-
7.发明申请Method and apparatus for determining modulation levels that are supported on a channel 有权用于确定在信道上支持的调制级别的方法和装置公开(公告)号：US20080200129A1
公开(公告)日：2008-08-21
申请号：US12022249
申请日：2008-01-30
IPC分类号： H04B17/00
CPC分类号： H04N17/004 , G01R29/06 , H04L5/1453 , H04L25/085 , H04L27/0008 , H04L27/0012 , H04L43/50 , H04N21/238 , H04N21/2383 , H04N21/4382
摘要： A logical channel is configured to match a modulation profile of an active channel. A network element is assigned to the logical channel and a ping request is sent to the network element. A response from the network element is measured, such as measuring the MER. The modulation profile is increased in the logical channel and another ping request is sent to the network element. The response is measured again, and the process is repeated until a non-linearity is detected in the response. The acceptable modulation profiles are indicated before the non-linearity is detected in the response.
摘要翻译： 逻辑信道被配置为匹配活动信道的调制简档。 网络元件被分配给逻辑信道，并且ping请求被发送到网络元件。 测量网元的响应，例如测量MER。 调制曲线在逻辑信道中增加，另一个ping请求被发送到网元。 再次测量响应，重复该过程，直到在响应中检测到非线性。 在响应中检测到非线性之前指示可接受的调制曲线。
-
公开(公告)号：US20080140823A1
公开(公告)日：2008-06-12
申请号：US11608028
申请日：2006-12-07
IPC分类号： G06F15/173
摘要： The presence of micro-reflections is determined in a network by determining micro-reflections from amplifier and diplex filter impedance mismatches and micro-reflections from drop cable impedance mismatches. The micro-reflections from impedance mismatches are determined by instructing network element to transmit a test signal at a first symbol rate and a first resolution for amplifier and diplex filter impedance mismatches and a second frequency with a second symbol rate and second resolution for micro-reflections from drop cable impedance mismatches. The tests are performed with several frequencies and the channels with the least micro-reflections are identified.
摘要翻译： 通过确定来自放大器的微反射和双重滤波器阻抗失配以及来自引入电缆阻抗失配的微反射，在网络中确定微反射的存在。 来自阻抗失配的微反射通过指示网络元件以第一符号速率和用于放大器和双通道滤波器阻抗失配的第一分辨率和用于微反射的第二符号速率和第二分辨率的第二频率来发送测试信号来确定 从电缆阻抗失配。 测试用几个频率进行，并且识别具有最少微反射的通道。
-
9.发明申请Efficient Use of Trusted Third Parties for Additional Content-Sharing Security 有权有效利用受信任的第三方进行额外的内容共享安全公开(公告)号：US20080056713A1
公开(公告)日：2008-03-06
申请号：US11470034
申请日：2006-09-05
IPC分类号： H04B10/08
CPC分类号： H04B10/0773
摘要： Network elements are identified as being connected to optical nodes by instructing two network elements in a spectrum group of the CMTS to transmit at frequencies f1 and f2, respectively. Frequencies f1 and f2 are selected such that they produce intermodulation distortions (intermods) in the laser transmitter at f3 when combined. If intermods are produced which exceed a predetermined threshold, then the two network elements are determined to be on the same node. If the total power of the signal by the laser transmitter exceeds an impact threshold, then the test is stopped and new network elements are selected for testing.
摘要翻译： 网络元件通过指示CMTS的频谱组中的两个网络元件分别在频率f 1和f 2上分别被发送来连接到光节点。 选择频率f 1和f 2 2，使得它们在组合时在f 3 3激光发送器中产生互调失真（互调）。 如果产生超过预定阈值的互调，则确定两个网络元件在同一节点上。 如果激光发射机的信号总功率超过冲击阈值，则停止测试，并选择新的网络元件进行测试。
-
10.发明授权Method and apparatus for determining modulation levels that are supported on a channel 有权用于确定在信道上支持的调制级别的方法和装置公开(公告)号：US08265559B2
公开(公告)日：2012-09-11
申请号：US12022249
申请日：2008-01-30
CPC分类号： H04N17/004 , G01R29/06 , H04L5/1453 , H04L25/085 , H04L27/0008 , H04L27/0012 , H04L43/50 , H04N21/238 , H04N21/2383 , H04N21/4382
摘要： A logical channel is configured to match a modulation profile of an active channel. A network element is assigned to the logical channel and a ping request is sent to the network element. A response from the network element is measured, such as measuring the MER. The modulation profile is increased in the logical channel and another ping request is sent to the network element. The response is measured again, and the process is repeated until a non-linearity is detected in the response. The acceptable modulation profiles are indicated before the non-linearity is detected in the response.
摘要翻译： 逻辑信道被配置为匹配活动信道的调制简档。 网络元件被分配给逻辑信道，并且ping请求被发送到网络元件。 测量网元的响应，例如测量MER。 调制曲线在逻辑信道中增加，另一个ping请求被发送到网元。 再次测量响应，重复该过程，直到在响应中检测到非线性。 在响应中检测到非线性之前指示可接受的调制曲线。
-
-
-
-
-
-
-
-
-
搜索结果
17 条记录 (耗时 0.029 秒)
