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1. 发明申请

US20100158049A1 SYSTEM FOR STACKING SIGNALS IN AN EXPANDED FREQUENCY RANGE 有权
标题翻译：用于在扩展频率范围内堆叠信号的系统
公开(公告)号：US20100158049A1
公开(公告)日：2010-06-24
申请号：US12342635
申请日：2008-12-23
申请人： Daniel H. Howard , Robert L. Howald , Johm M. Ulm
发明人： Daniel H. Howard , Robert L. Howald , Johm M. Ulm
IPC分类号： H04J1/00
CPC分类号： H04J1/00 , H04N7/22
摘要： A device for stacking signals in an expanded frequency range includes an upconverter and a multiplexer. The upconverter is configured to receive upstream signals that are in a first frequency range, upconvert some of the upstream signals that are in a first frequency sub-range of the first frequency range and pass some of the upstream signals that are in a second frequency sub-range of the first frequency range. The multiplexer is configured to stack the upconverted upstream signals and the upstream signals in the second frequency sub-range and output the stacked upstream signals.
摘要翻译：用于堆叠扩展频率范围内的信号的装置包括上变频器和多路复用器。上变频器被配置为接收处于第一频率范围的上行信号，上变频处于第一频率范围的第一频率子范围中的一些上行信号，并且通过处于第二频率子步骤中的一些上行信号 - 第一频率范围。多路复用器被配置为将上变频的上行信号和上行信号叠加在第二频率子范围内并输出堆叠的上行信号。

2. 发明授权

US08537861B2 System for stacking signals in an expanded frequency range 有权
标题翻译：用于堆叠扩展频率范围内的信号的系统
公开(公告)号：US08537861B2
公开(公告)日：2013-09-17
申请号：US12342635
申请日：2008-12-23
申请人： Daniel H. Howard , Robert L. Howald , John M. Ulm
发明人： Daniel H. Howard , Robert L. Howald , John M. Ulm
IPC分类号： H04J1/00
CPC分类号： H04J1/00 , H04N7/22
摘要： A device for stacking signals in an expanded frequency range includes an upconverter and a multiplexer. The upconverter is configured to receive upstream signals that are in a first frequency range, upconvert some of the upstream signals that are in a first frequency sub-range of the first frequency range and pass some of the upstream signals that are in a second frequency sub-range of the first frequency range. The multiplexer is configured to stack the upconverted upstream signals and the upstream signals in the second frequency sub-range and output the stacked upstream signals.
摘要翻译：用于堆叠扩展频率范围内的信号的装置包括上变频器和多路复用器。上变频器被配置为接收处于第一频率范围的上行信号，上变频处于第一频率范围的第一频率子范围中的一些上行信号，并且通过处于第二频率子步骤中的一些上行信号 - 第一频率范围。多路复用器被配置为将上变频的上行信号和上行信号叠加在第二频率子范围内并输出堆叠的上行信号。

3. 发明授权

US08370886B2 Return feed forward 有权
标题翻译：返回前进
公开(公告)号：US08370886B2
公开(公告)日：2013-02-05
申请号：US12634427
申请日：2009-12-09
申请人： George S. Karpati , Robert L. Howald
发明人： George S. Karpati , Robert L. Howald
IPC分类号： H04N7/173
CPC分类号： H04N7/104
摘要： Provided is a device for use with a headend, a household and an amplifier. The headend is able to provide signals within a high-frequency band fH. The household is able to provide signals within a low-frequency band fL, and to provide signals within a super-high-frequency band fR, where fL
摘要翻译：提供了一种用于头端，家用和放大器的设备。头端能够在高频带fH内提供信号。家庭能够在低频带fL内提供信号，并在超高频带fR内提供信号，其中fL

4. 发明申请

US20110138436A1 RETURN FEED FORWARD 有权
标题翻译：返回进给
公开(公告)号：US20110138436A1
公开(公告)日：2011-06-09
申请号：US12634427
申请日：2009-12-09
申请人： George S. Karpati , Robert L. Howald
发明人： George S. Karpati , Robert L. Howald
IPC分类号： H04N7/173
CPC分类号： H04N7/104
摘要： Provided is a device for use with a headend, a household and an amplifier. The headend is able to provide signals within a high-frequency band fH. The household is able to provide signals within a low-frequency band fL, and to provide signals within a super-high-frequency band fR, where fL
摘要翻译：提供了一种用于头端，家用和放大器的设备。头端能够在高频带fH内提供信号。家庭能够在低频带fL内提供信号，并在超高频带fR内提供信号，其中fL

5. 发明授权

US07716712B2 Narrowband interference and identification and digital processing for cable television return path performance enhancement 有权
标题翻译：窄带干扰和识别和数字处理有线电视返回路径性能提升
公开(公告)号：US07716712B2
公开(公告)日：2010-05-11
申请号：US10465339
申请日：2003-06-18
申请人： Ted Nelson Booth , Robert L. Howald
发明人： Ted Nelson Booth , Robert L. Howald
IPC分类号： H04N7/173 , G06F15/173
CPC分类号： H04N7/102 , H04N7/17309 , H04N21/6118 , H04N21/6168
摘要： An adaptive data stream filter removes narrowband interference from the CATV return path prior to these paths being combined in the network. A method for removing narrowband interference from the CATV return path detects potential narrowband interference in real-time and adapts a filter to remove this potential narrowband interference. An exemplary embodiment of the above method uses previously created filters that are combined based on detected interference in an adaptive manner to continually adapt to new interference sources. Another exemplary embodiment of the above method calculates new filter coefficients for the data stream filter based on detected interference. In another embodiment, two filters are operated in a ping-pong manner for each band of interference identified as above threshold. This enables updating of one filter while another filter is performing the data stream filter operation.
摘要翻译：自适应数据流过滤器在网络中组合这些路径之前，从CATV返回路径中去除窄带干扰。用于从CATV返回路径去除窄带干扰的方法实时检测潜在的窄带干扰，并适配滤波器以消除该潜在的窄带干扰。上述方法的示例性实施例使用先前创建的滤波器，其基于检测到的干扰以自适应方式组合以连续适应新的干扰源。上述方法的另一示例性实施例基于检测到的干扰来计算数据流滤波器的新滤波器系数。在另一个实施例中，对于被标识为上述阈值的每个干扰频带，以乒乓方式操作两个滤波器。这使得能够更新一个过滤器，而另一个过滤器正在执行数据流过滤器操作。

6. 发明授权

US07698726B2 Band limited port aggregation in a digital return path CATV system 有权
标题翻译：数字返回路径CATV系统中的带限端口聚合
公开(公告)号：US07698726B2
公开(公告)日：2010-04-13
申请号：US10765349
申请日：2004-01-27
申请人： Erik C. Metz , Robert L. Howald
发明人： Erik C. Metz , Robert L. Howald
IPC分类号： H04N7/173
CPC分类号： H04N21/437 , H04N7/17309 , H04N7/22
摘要： A method and system for multi-port aggregation in a digital return path CATV system digitizes each of a plurality of return path signals, splits each of the plurality of return path signals into a low band and an upper band (41), combines each of the plurality of low band signals to form a combined low band signal (43), downconverts each of the plurality of upper band signals from an original frequency range into a new downconverted frequency range (45) and time division multiplexes the plurality of downconverted upper band signals with the combined low band signal to form an aggregate data stream (46).
摘要翻译：一种用于数字返回路径中多端口聚合的方法和系统，CATV系统将多个返回路径信号中的每一个数字化，将多个返回路径信号中的每一个分离成低频带和上频带（41），所述多个低频带信号以形成组合的低频带信号（43），将所述多个上频带信号中的每一个从原始频率范围下变频成新的下变频频率范围（45），并且对所述多个下变频上频带进行时分复用信号与组合的低频带信号形成聚合数据流（46）。

7. 发明授权

US07671778B2 Digital signal processing scheme for high performance HFC digital return path system with bandwidth conservation 有权
标题翻译：数字信号处理方案，用于具有带宽保护的高性能HFC数字返回路径系统
公开(公告)号：US07671778B2
公开(公告)日：2010-03-02
申请号：US10465326
申请日：2003-06-18
申请人： Mao Zhu Zhang , Robert L. Howald
发明人： Mao Zhu Zhang , Robert L. Howald
IPC分类号： H03M1/58
CPC分类号： H03M7/50 , H03M7/30 , H04N7/17309 , H04N7/22 , H04N21/6168
摘要： In a cable return path system, a method for performing digital companding adds a predetermined offset to the digital value to be companded, and employs a modified μ-law or a-law companding technique to obtain a reduced bit length digital value. One embodiment of this modified approach adds a predetermined offset (e.g., 129 for a 12-bit implementation) to the digital value before companding and then employs a two-bit chord and a 5-bit step for the 12-bit implementation. The end result is that the performance metrics are not significantly compromised by this bit reduction when compared to current transmission methods without this technique.
摘要翻译：在电缆返回路径系统中，用于执行数字压扩的方法对要压缩的数字值添加预定的偏移量，并采用修正的μ律或法律压扩技术来获得缩减的位长数字值。该修改的方法的一个实施例在压扩之前将预定偏移（例如，用于12位实现的129）添加到数字值，然后对于12位实现采用两位和弦和5位步。最终的结果是，与没有这种技术的当前传输方法相比，性能度量不会被这个比特减少显着地损害。

8. 发明申请

US20070279495A1 Robust Wireless High-Speed Data Services Across An HFC Infrastructure Using Wired Diversity Techniques 审中-公开
标题翻译：使用有线分集技术的HFC基础架构中的强大的无线高速数据业务
公开(公告)号：US20070279495A1
公开(公告)日：2007-12-06
申请号：US11736946
申请日：2007-04-18
申请人： Robert L. Howald
发明人： Robert L. Howald
IPC分类号： H04N17/00
CPC分类号： H04B7/082 , H04B7/0842 , H04N17/00
摘要： A system and method are provided for performing wireless diversity processing in a data-over-cable network. A diversity controller is provided which, based on signal-to-noise ratio, chooses an optimal path for receiving and transmitting data to and from a subscriber location. A stand-mounted access point enables wireless communication with subscriber locations. Diversity processing includes selection diversity, maximal rate combining, and equal gain combining.
摘要翻译：提供了一种用于在电缆数据网络中执行无线分集处理的系统和方法。提供一种分集控制器，其基于信噪比，选择用于从用户位置接收和发送数据的最佳路径。一个独立的接入点可以实现与用户位置的无线通信。分集处理包括选择分集，最大速率组合和等增益组合。

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