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1. 发明申请

US20130208632A1 NOISE MANAGEMENT FOR COMMUNICATION SYSTEM 有权
标题翻译：通信系统噪声管理
公开(公告)号：US20130208632A1
公开(公告)日：2013-08-15
申请号：US13372906
申请日：2012-02-14
申请人： Thomas H. Williams , Luis Alberto Campos
发明人： Thomas H. Williams , Luis Alberto Campos
IPC分类号： H04B15/00 , H04L5/14
CPC分类号： H04B15/00 , H04L5/14
摘要： A duplex communication system having gate-implemented noise management is contemplated. The system may include a gate or other device sufficiently operable to facilitate managing upstream and downstream signaling so as to ameliorate noise funneling between communicating endpoints by selectively controlling communication paths through which noise may be propagated. Optionally, the system may be operably configured to facilitate this type of gate-implemented noise management for time domain duplex (TDD) and frequency domain duplex (FDD) communications.
摘要翻译：考虑了具有门执行噪声管理的双工通信系统。系统可以包括足够可操作以便于管理上游和下游信令的门或其他设备，以便通过选择性地控制可以传播噪声的通信路径来改善通信端点之间的噪声漏斗。可选地，系统可以被可操作地配置为促进对于时域双工（TDD）和频域双工（FDD）通信的这种类型的门执行的噪声管理。

2. 发明授权

US07921351B2 Increasing error correction in data streams encoded with linear block code 有权
标题翻译：增加用线性块码编码的数据流中的纠错
公开(公告)号：US07921351B2
公开(公告)日：2011-04-05
申请号：US11679246
申请日：2007-02-27
申请人： Thomas H. Williams , Luis Alberto Campos
发明人： Thomas H. Williams , Luis Alberto Campos
IPC分类号： H03M13/00
CPC分类号： H04L1/0061 , H04L1/0045 , H04L1/0065
摘要： Disclosed is an apparatus and method for increasing the error correction capabilities of a receiver circuit that receives a data stream of encoded data symbols that are encoded with a linear block code. Analog and digital comparator circuits are used to detect laser clipping or analog to digital converter overloading. Corrupted symbols are detected by comparing in-phase and/or quadrature phase baseband signals with pre-determined threshold limits that indicate that the in-phase and quadrature phase signals have exceeded the normal signal trajectory of an unimpaired signal. Corrupted symbols may also be detected by determining that the laser has been clipped. Corrupted symbols are marked for erasure prior to decoding and error correction. Erasure of corrupted signals increases the error correction capabilities of the decoder circuit.
摘要翻译：公开了一种用于增加接收电路的纠错能力的装置和方法，该接收机电路接收用线性块码编码的编码数据符号的数据流。模拟和数字比较电路用于检测激光削波或模数转换器过载。通过将同相和/或正交相位基带信号与预先确定的阈值极限进行比较来检测损坏的符号，这些阈值极限指示同相和正交相位信号已经超过未损坏信号的正常信号轨迹。也可以通过确定激光被剪切来检测损坏的符号。损坏的符号在解码和纠错之前被标记为擦除。擦除损坏的信号会增加解码器电路的纠错能力。

3. 发明授权

US09722711B2 Noise management for communication system 有权
公开(公告)号：US09722711B2
公开(公告)日：2017-08-01
申请号：US13372906
申请日：2012-02-14
申请人： Thomas H. Williams , Luis Alberto Campos
发明人： Thomas H. Williams , Luis Alberto Campos
IPC分类号： H04N7/173 , H04B15/00 , H04L5/14
CPC分类号： H04B15/00 , H04L5/14
摘要： A duplex communication system having gate-implemented noise management is contemplated. The system may include a gate or other device sufficiently operable to facilitate managing upstream and downstream signaling so as to ameliorate noise funneling between communicating endpoints by selectively controlling communication paths through which noise may be propagated. Optionally, the system may be operably configured to facilitate this type of gate-implemented noise management for time domain duplex (TDD) and frequency domain duplex (FDD) communications.

4. 发明申请

US20140003307A1 TIME DOMAIN DUPLEX (TDD) SWITCHING SYSTEM 有权
标题翻译：时域双工（TDD）切换系统
公开(公告)号：US20140003307A1
公开(公告)日：2014-01-02
申请号：US13537430
申请日：2012-06-29
申请人： Thomas H. Williams , Luis Alberto Campos
发明人： Thomas H. Williams , Luis Alberto Campos
IPC分类号： H04L5/14 , H04L12/24
CPC分类号： H04L49/10 , H04L5/14 , H04N21/2408 , H04N21/61 , H04W72/0406
摘要： Time domain duplex (TDD) is contemplated, including controlling switches and/or amplifiers to facilitate signaling between a network and a plurality of end stations (ESs) according to a TDD control strategy. The TDD control strategy may be characterized by preventing simultaneous upstream and downstream communication between the network and one or more of the ESs over a particular frequency band. The TDD control strategy may be limited to a particular frequency range such that signaling outside of frequency range may be simultaneously communicated upstream and downstream.
摘要翻译：考虑了时域双工（TDD），包括控制交换机和/或放大器以便于根据TDD控制策略在网络和多个终端站（ES）之间的信令。 TDD控制策略的特征在于防止网络与特定频带上的一个或多个ES之间的同时上游和下游通信。 TDD控制策略可以被限制到特定的频率范围，使得在频率范围外的信令可以在上游和下游同时传送。

5. 发明申请

US20080155376A1 INCREASING ERROR CORRECTION IN DATA STREAMS ENCODED WITH LINEAR BLOCK CODE 有权
标题翻译：增加使用线性块代码编码的数据流中的错误校正
公开(公告)号：US20080155376A1
公开(公告)日：2008-06-26
申请号：US11679246
申请日：2007-02-27
申请人： Thomas H. Williams , Luis Alberto Campos
发明人： Thomas H. Williams , Luis Alberto Campos
IPC分类号： G06F11/08
CPC分类号： H04L1/0061 , H04L1/0045 , H04L1/0065
摘要： Disclosed is an apparatus and method for increasing the error correction capabilities of a receiver circuit that receives a data stream of encoded data symbols that are encoded with a linear block code. Analog and digital comparator circuits are used to detect laser clipping or analog to digital converter overloading. Corrupted symbols are detected by comparing in-phase and/or quadrature phase baseband signals with pre-determined threshold limits that indicate that the in-phase and quadrature phase signals have exceeded the normal signal trajectory of an unimpaired signal. Corrupted symbols may also be detected by determining that the laser has been clipped. Corrupted symbols are marked for erasure prior to decoding and error correction. Erasure of corrupted signals increases the error correction capabilities of the decoder circuit.
摘要翻译：公开了一种用于增加接收电路的纠错能力的装置和方法，该接收机电路接收用线性块码编码的编码数据符号的数据流。模拟和数字比较电路用于检测激光削波或模数转换器过载。通过将同相和/或正交相位基带信号与预先确定的阈值极限进行比较来检测损坏的符号，这些阈值极限指示同相和正交相位信号已经超过未损坏信号的正常信号轨迹。也可以通过确定激光被剪切来检测损坏的符号。损坏的符号在解码和纠错之前被标记为擦除。擦除损坏的信号会增加解码器电路的纠错能力。

6. 发明授权

US09577954B2 Time domain duplex (TDD) switching system 有权
标题翻译：时域双工（TDD）交换系统
公开(公告)号：US09577954B2
公开(公告)日：2017-02-21
申请号：US13537430
申请日：2012-06-29
申请人： Thomas H. Williams , Luis Alberto Campos
发明人： Thomas H. Williams , Luis Alberto Campos
IPC分类号： H04L12/933 , H04L5/14 , H04N21/61 , H04N21/24 , H04W72/04
CPC分类号： H04L49/10 , H04L5/14 , H04N21/2408 , H04N21/61 , H04W72/0406
摘要： Time domain duplex (TDD) is contemplated, including controlling switches and/or amplifiers to facilitate signaling between a network and a plurality of end stations (ESs) according to a TDD control strategy. The TDD control strategy may be characterized by preventing simultaneous upstream and downstream communication between the network and one or more of the ESs over a particular frequency band. The TDD control strategy may be limited to a particular frequency range such that signaling outside of frequency range may be simultaneously communicated upstream and downstream.
摘要翻译：考虑了时域双工（TDD），包括控制交换机和/或放大器以便于根据TDD控制策略在网络和多个终端站（ES）之间的信令。 TDD控制策略的特征在于防止网络与特定频带上的一个或多个ES之间的同时上游和下游通信。 TDD控制策略可以被限制到特定的频率范围，使得在频率范围外的信令可以在上游和下游同时传送。

7. 发明授权

US07451472B2 System and method to test network performance with impairments 有权
标题翻译：用损伤测试网络性能的系统和方法
公开(公告)号：US07451472B2
公开(公告)日：2008-11-11
申请号：US10262234
申请日：2002-09-30
申请人： Thomas H. Williams
发明人： Thomas H. Williams
IPC分类号： H04N7/173 , H04N17/00 , H04N17/02
CPC分类号： H04N17/00
摘要： The upstream performance characteristics of a network are measured by looping a signal through both the downstream and upstream paths of the network. Test equipment may be located at a headend of the network and configured to transmit a signal downstream to a remotely located loopback device that redirects the signal in the upstream path to the test equipment. The upstream characteristics may be predominant in the analysis of the return signal because the downstream path may be relatively free from noise.
摘要翻译：通过网络的下游和上游路径循环信号来测量网络的上行性能特征。测试设备可以位于网络的前端，并且被配置为向下游发送信号到远程定位的环回设备，其将上游路径中的信号重定向到测试设备。在返回信号的分析中，上游特征可能是主要的，因为下游路径可能相对没有噪声。

8. 发明授权

US5886749A Demodulation using a time domain guard interval with an overlapped transform 失效
标题翻译：使用具有重叠变换的时域保护间隔进行解调
公开(公告)号：US5886749A
公开(公告)日：1999-03-23
申请号：US787342
申请日：1997-01-28
申请人： Thomas H. Williams , Majid Chelehmal , Yasuhiro Ito
发明人： Thomas H. Williams , Majid Chelehmal , Yasuhiro Ito
IPC分类号： H04B1/10 , H04B7/005 , H04J11/00 , H04N5/21 , H04N5/213
CPC分类号： H04N5/211 , Y10S348/914
摘要： A system and method for demodulation of an RF signal on a transmission channel is provided. The RF signal is demodulated to baseband as an in-phase (I) data signal and a quadrature (Q) data signal. A first block of I data is captured and a first block of Q data is captured. A time domain guard interval is provided in the captured first blocks of I and Q data. A complex discrete Fourier transform is performed on the captured first I and Q data blocks. An inverse frequency response for the transmission channel is determined. The inverse frequency response is multiplied by the complex discrete Fourier transform of the guard-interval protected first I and Q data blocks to generate a frequency domain product signal. An inverse Fourier transform on the product of the multiplying step is performed to generate a first equalized time domain signal. In a preferred embodiment, the method also includes using an overlapped Fourier transform and discarding a first portion of each equalized time domain signal.
摘要翻译：提供了一种在传输信道上解调RF信号的系统和方法。 RF信号被解调为基带作为同相（I）数据信号和正交（Q）数据信号。捕获I数据的第一块，并且捕获Q数据的第一块。在所捕获的I和Q数据的第一块中提供时域保护间隔。对所捕获的第一I和Q数据块执行复杂离散付里叶变换。确定传输信道的反频率响应。逆频率响应乘以保护间隔保护的第一I和Q数据块的复数离散付里叶变换，以产生频域乘积信号。对乘法步骤的乘积执行逆傅立叶变换以产生第一均衡时域信号。在优选实施例中，该方法还包括使用重叠的傅里叶变换并且丢弃每个均衡的时域信号的第一部分。

9. 发明授权

US5870513A Bidirectional cable network with a mixing tap for suppressing undesirable noise in signals from a remote end of the network 失效
标题翻译：具有用于抑制来自网络远端的信号中不期望的噪声的混合抽头的双向电缆网络
公开(公告)号：US5870513A
公开(公告)日：1999-02-09
申请号：US877462
申请日：1997-06-17
申请人： Thomas H. Williams
发明人： Thomas H. Williams
IPC分类号： G02B6/42 , H04B10/18 , G02B6/293
CPC分类号： H04B10/2507 , G02B6/4246
摘要： Noise energy and other undesirable signals are suppressed in a return frequency band of a return path of a bidirection cable network. Data signals in a third frequency band and a prybar signal are transmitted on a user site to a mixing tap. The mixing tap contains a filter for eliminating signals in the return frequency band generated at the user site. The prybar signal is received by the mixing tap and activates a local oscillator. The third band signals and oscillation signals are applied to a mixer in the mixing tap and the third band signals are converted to return band signals. This mixing tap then applies the return band to the return path of the cable network.
摘要翻译：在双向有线网络的返回路径的返回频带中抑制噪声能量和其它不期望的信号。将第三频带中的数据信号和prybar信号在用户站点上发送到混合抽头。混合抽头包含用于消除在用户现场产生的返回频带中的信号的滤波器。混合抽头接收撬棒信号并激活本地振荡器。第三频带信号和振荡信号被施加到混合抽头中的混频器，并且第三频带信号被转换成返回频带信号。该混合抽头然后将返回带应用到电缆网络的返回路径。

10. 发明授权

US5385339A Set-up jig for truss table 失效
标题翻译：桁架设置夹具
公开(公告)号：US5385339A
公开(公告)日：1995-01-31
申请号：US070556
申请日：1993-06-01
申请人： Thomas H. Williams
发明人： Thomas H. Williams
IPC分类号： B23Q1/03 , B23Q16/00 , B27F7/15 , B25B1/20
CPC分类号： B23Q1/032 , B23Q16/001 , B27F7/155 , Y10S269/91 , Y10T29/5397
摘要： A set-up jig for a truss table is disclosed. The jig comprises (a) a body portion having a recessed portion on its lower surface configured to receive and slide upon a rail and further including a securing apeture and (b) stop means for constraining the movement of truss planks. A truss table suitable for use with such jigs is also disclosed.
摘要翻译：公开了一种用于桁架台的安装夹具。夹具包括（a）主体部分，其下表面上具有凹陷部分，其构造成在轨道上容纳和滑动，并进一步包括固定爪和（b）限制桁架板的运动的止动装置。还公开了适用于这种夹具的桁架台。

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