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31. 发明授权

US07336680B2 Multi-carrier frequency-division multiplexing (FDM) architecture for high speed digital service 有权
标题翻译：用于高速数字业务的多载波频分复用（FDM）架构
公开(公告)号：US07336680B2
公开(公告)日：2008-02-26
申请号：US10244899
申请日：2002-09-17
申请人： Donald C. Sorenson , Jiening Ao , Steven E. Blashewski , John W. Brickell , Florin Farcas , Richard J. Futch , Joseph Graham Mobley , John A. Ritchie, Jr. , Lamar E. West, Jr.
发明人： Donald C. Sorenson , Jiening Ao , Steven E. Blashewski , John W. Brickell , Florin Farcas , Richard J. Futch , Joseph Graham Mobley , John A. Ritchie, Jr. , Lamar E. West, Jr.
IPC分类号： H04J3/16
CPC分类号： H04N21/4382 , H04J4/00 , H04L7/041 , H04L12/2801 , H04L12/403 , H04L27/2657 , H04L29/06027 , H04L65/1016 , H04N7/10 , H04N7/17309 , H04N21/2362 , H04N21/2365 , H04N21/2383 , H04N21/4305 , H04N21/437 , H04N21/6118 , H04N21/6168
摘要： An architecture for providing high-speed access over frequency-division multiplexed (FDM) channels allows transmission of ethernet frames and/or other data across a cable transmission network or other form of FDM transport. The architecture involves downstream and upstream FDM multiplexing techniques to allow contemporaneous, parallel communications across a plurality of frequency channels. Furthermore, the architecture allows a central concentrator to support a plurality of remote devices that each have guaranteed bandwidth through connection-oriented allocations of bi-directional data flows. The upstream and downstream bandwidth allocation can support symmetrical bandwidth as well as asymmetrical bandwidth in either direction. The architecture generally can be used to support connection-oriented physical layer connectivity between a remote device and the central concentrator. Furthermore, the architecture may be integrated into other higher level devices such as, but not limited to, bridges, switches, routers, and/or gateways. The architecture generally may peacefully coexist with other services commonly-found in cable distribution networks.
摘要翻译：用于通过频分复用（FDM）信道提供高速接入的架构允许通过有线传输网络或其它形式的FDM传输传输以太网帧和/或其他数据。该架构涉及下游和上游FDM复用技术，以允许跨多个频率信道同时进行并行通信。此外，该架构允许中央集中器支持多个远程设备，每个远程设备通过双向数据流的面向连接的分配来保证带宽。上行和下行带宽分配可以支持任意方向的对称带宽以及非对称带宽。该架构通常可用于支持远程设备和中央集中器之间的面向连接的物理层连接。此外，该架构可以集成到其他较高级别的设备中，例如但不限于网桥，交换机，路由器和/或网关。该架构通常可以和有线分布网络中常见的其他服务和平共存。

32. 发明授权

US06570693B2 Reverse path optical combining using an optical commutator 有权
公开(公告)号：US06570693B2
公开(公告)日：2003-05-27
申请号：US09840766
申请日：2001-04-23
申请人： Lamar E. West, Jr.
发明人： Lamar E. West, Jr.
IPC分类号： H04B1012
CPC分类号： H04J14/0282 , H04B10/506 , H04J14/0226 , H04J14/0249
摘要： An optical commutator (310) for combining optical signals emanating from a plurality of optical transmitters (305a-n). The commutator (310) includes a plurality of input ports connected to each optical transmitter (305a-n) via an optical fiber (315a-n). The optical transmitters transmits the optical signals within a predetermined bandwidth. A switching means (410) sequentially connects each of the plurality of input ports to an output port (415), where each of the plurality of inputs ports is connected to the output port (415) at a frequency greater than twice the predetermined bandwidth. The output port (415) then provides a combined optical signal that includes the plurality of optical signals.

33. 发明授权

US5231660A Compensation control for off-premises CATV system 失效
标题翻译：室外CATV系统的补偿控制
公开(公告)号：US5231660A
公开(公告)日：1993-07-27
申请号：US619261
申请日：1990-11-28
申请人： Lamar E. West, Jr.
发明人： Lamar E. West, Jr.
IPC分类号： H04N7/10 , H04N7/16 , H04N7/167
CPC分类号： H04K3/825 , H04K3/42 , H04K3/43 , H04N7/102 , H04N7/166 , H04N7/167 , H04K2203/14
摘要： A off-premises CATV system includes a compensation control including a picture carrier controlled automatic gain control and an automatic slope control. A broadband television signal output from a variable gain device is distributed by a radio frequency signal splitter to a number of subscribers for interdiction by the generation of a number of jamming signals. The variable gain device and a variable impedance device which is frequency dependent are connected in series for automatic gain control and automatic slope control, respectively. A first feedback control is used to compare a first portion of the broadband television signal to a reference power level and to control the variable gain device to null the error. A second feedback control is used to compare a second portion of the broadband signal to a second reference power level and to control the variable impedance device to null the error. A second embodiment of the second feedback control differences the first and second portions of the broadband television signal. The first predetermined portion is a band of frequencies (high band) between 250 MHz. and 310 MHz. and the second predetermined portion is a band of frequencies (low band) between 54 MHz. and 150 MHz. The predetermined power level reference for automatic gain control is set equal to the attenuation between the off-premises equipment and the subscriber premises plus the desired level at the subscriber premises. The power level of the jamming signals for denying access to unauthorized television programs is set to fall within a predetermined range of power levels related to the first predetermined power level reference.
摘要翻译：室外CATV系统包括补偿控制，包括图像载波控制的自动增益控制和自动斜坡控制。从可变增益装置输出的宽带电视信号由无线电频率信号分离器分配给多个订户以通过产生多个干扰信号进行闭塞。频率依赖的可变增益器件和可变阻抗器件分别串联连接，用于自动增益控制和自动斜率控制。第一反馈控制用于将宽带电视信号的第一部分与参考功率电平进行比较，并且控制可变增益器件以使误差为零。第二反馈控制用于将宽带信号的第二部分与第二参考功率电平进行比较，并且控制可变阻抗装置使误差为零。第二反馈控制的第二实施例使宽带电视信号的第一和第二部分不同。第一预定部分是250MHz之间的频带（高频带）。和310 MHz。第二预定部分是54MHz之间的频带（低频带）。和150 MHz。用于自动增益控制的预定功率电平基准被设置为等于外部设备与用户住宅之间的衰减加上用户住宅处的期望电平。用于拒绝访问未经授权的电视节目的干扰信号的功率电平被设置为落在与第一预定功率电平基准相关的功率电平的预定范围内。

34. 发明授权

US5155590A System for data channel level control 失效
标题翻译：数据通道电平控制系统
公开(公告)号：US5155590A
公开(公告)日：1992-10-13
申请号：US498084
申请日：1990-03-20
申请人： Robert J. Beyers, II , Charles R. Bramhall , Gregory S. Durden , Robert J. Edwards , Ray T. Haman, Jr. , Douglas J. Hoder , Donald R. Huntley , John A. Kennedy , Emory L. McGinty, Jr. , Jay C. McMullan, Jr. , David J. Naddor , Randolph J. Schaubs , Jesse M. Still , Anthony J. Wasilewski , Lamar E. West, Jr. , Donovan S. White
发明人： Robert J. Beyers, II , Charles R. Bramhall , Gregory S. Durden , Robert J. Edwards , Ray T. Haman, Jr. , Douglas J. Hoder , Donald R. Huntley , John A. Kennedy , Emory L. McGinty, Jr. , Jay C. McMullan, Jr. , David J. Naddor , Randolph J. Schaubs , Jesse M. Still , Anthony J. Wasilewski , Lamar E. West, Jr. , Donovan S. White
IPC分类号： G06F21/10 , H04H20/76 , H04H20/78 , H04H60/32 , H04L1/00 , H04L5/06 , H04L27/20 , H04L27/227 , H04N7/10 , H04N7/173 , H04N21/258 , H04N21/442
CPC分类号： H04N21/44222 , H04L27/2035 , H04L27/2276 , H04L5/06 , H04N21/25891 , H04N7/10 , H04N7/17309
摘要： Automatic level calibration apparatus for transmitting data from a cable television terminal to the headend of a cable television system comprises programmable transmitter apparatus of the terminal, programmable receiving apparatus at the headend and a calibration controller. Responsive to an addressed command from the headend, the programmable transmitter apparatus returns a sequence of levels at a particular calibration frequency. The programmable receiver apparatus determines an indication of the received signal strength of each of the levels of the sequence of levels. The controller determines an optimum level for transmissions from the terminal.
摘要翻译：用于将数据从有线电视终端发送到有线电视系统的前端的自动电平校准装置包括终端的可编程发送装置，头端的可编程接收装置和校准控制器。响应于来自头端的寻址命令，可编程发射机设备以特定校准频率返回级别序列。可编程接收机装置确定每个级别级别的接收信号强度的指示。控制器确定来自终端的传输的最佳等级。

35. 发明授权

US5144267A Variable slope network for off-premises CATV system 失效
标题翻译：用于室外CATV系统的可变斜率网络
公开(公告)号：US5144267A
公开(公告)日：1992-09-01
申请号：US619630
申请日：1990-11-28
申请人： Lamar E. West, Jr.
发明人： Lamar E. West, Jr.
IPC分类号： H04N7/10 , H04N7/16
CPC分类号： H04N7/166 , H04N7/102
摘要： A three terminal compensation network for frequency dependent attenuation has a control terminal, an input terminal, and an output terminal. The network is particularly useful for an off-premises CATV system for slope compensation of a broadband television signal. The control terminal is supplied with a voltage indicative of the amount and direction of the slope in the actual television signal. The voltage oppositely biases a set of diodes which are used as controlled resistances in a pair of tuned circuits in the network. One series tuned circuit provides for varying degrees of negative slope compensation and a parallel tuned circuit provides for varying degrees of positive slope compensation. The network elements are connected in a modified bridge T configuration such that the characteristic impedance of the CATV system (75 ohms) can be approximately matched for the input and output of the broadband television signal.
摘要翻译：用于频率相关衰减的三端补偿网络具有控制端子，输入端子和输出端子。该网络对于用于宽带电视信号的斜率补偿的室外CATV系统特别有用。控制端子被提供有指示实际电视信号中斜率的量和方向的电压。电压相反地偏置一组二极管，其被用作网络中的一对调谐电路中的受控电阻。一个串联调谐电路提供不同程度的负斜率补偿，并行调谐电路提供不同程度的正斜率补偿。网络元件以修改的桥T配置连接，使得CATV系统（75欧姆）的特性阻抗可以近似地匹配宽带电视信号的输入和输出。

36. 发明授权

US5109286A CATV reverse path manifold system 失效
标题翻译： CATV反向路径歧管系统
公开(公告)号：US5109286A
公开(公告)日：1992-04-28
申请号：US446695
申请日：1989-12-06
申请人： Lamar E. West, Jr. , James O. Farmer
发明人： Lamar E. West, Jr. , James O. Farmer
IPC分类号： H04N7/16 , H04N7/173
CPC分类号： H04N7/166 , H04N7/17309 , H04N7/17354 , H04K2203/14 , H04K3/825
摘要： A cable television reverse manifold system is coupled between first and second diplexers of off-premises subscriber service providing equipment. The diplexers separate the transmission path between a headend and a subscriber into downstream or forward and upstream or reverse transmission paths. In one embodiment, the reverse manifold apparatus combines signals from at least one subscriber for transmission to the headend. In another embodiment including a data receiver and a controller, the off premises service providing equipment may be controlled by the subscriber. In yet a third embodiment, a radio frequency transmitter is coupled between the controller and the upstream diplexer which may actuate a plurality of simultaneous data transmissions over separate data channels in the notoriously noisy subsplit 5-30 megahertz transmission spectrum.
摘要翻译：有线电视反向歧管系统耦合在室外用户服务提供设备的第一和第二双工器之间。双工器将前端和用户之间的传输路径分离成下行或前向以及上行或反向传输路径。在一个实施例中，反向歧管装置将来自至少一个用户的信号组合到头端。在包括数据接收器和控制器的另一个实施例中，外部场所服务提供设备可以由用户控制。在第三个实施例中，射频发射机耦合在控制器和上行双工器之间，该双工器可以在臭名昭着的噪声分段5-30兆赫兹传输频谱中的单独的数据信道上致动多个同时的数据传输。

37. 发明授权

US4748667A Jamming signal scrambling and descrambling systems for CATV 失效
标题翻译：用于CATV的干扰信号加扰和解扰系统
公开(公告)号：US4748667A
公开(公告)日：1988-05-31
申请号：US926749
申请日：1986-11-04
申请人： James O. Farmer , Anatoly Kozushin , Herman A. Kruse , William P. LaFay , Christopher P. Lewis , Frank R. Little, Jr. , Leo Montreuil , Leo J. Thompson , Lamar E. West, Jr. , Joseph G. Mobley, II
发明人： James O. Farmer , Anatoly Kozushin , Herman A. Kruse , William P. LaFay , Christopher P. Lewis , Frank R. Little, Jr. , Leo Montreuil , Leo J. Thompson , Lamar E. West, Jr. , Joseph G. Mobley, II
IPC分类号： H04N7/16 , H04N7/167 , H03H7/00
CPC分类号： H04K3/825 , H04K3/42 , H04N7/166 , H04K2203/14 , H04K3/43
摘要： Scrambling and descrambling systems utilizing jamming signals provide improved pictures with minimal distortion due to ghosts and artifacts. The television signal is combined with a jamming signal or signals located preferably in the vestigial sideband (VSB) of the modulated picture carrier and at about a null in the spectrum of the modulation of the picture carrier by the horizontal sync. The jamming signal or signals also preferably are placed between the harmonic components of the horizontal sync which define the horizontal sync spectrum and at frequencies which comply with governmental regulations respecting frequency locations of strong signals of CATV purposes. The jamming signals are generated by phase locking to the horizontal sync signals of the television signals or to a submultiple of the horizontal sync frequency. Artifacts are further reduced by preemphasis of the transmitted television signal in the sideband opposite to that in which the jamming signal or signals are located and spaced by an equal frequency increment from the location of the jamming signal energy. In order to extract the jamming signal, so as to descramble the television signal for reproduction in the subscriber's television receiver, a network including at least one surface acoustic wave (SAW) resonator device is embedded in an all-pass network which allows essentially lossless transmission of the television signal spectrum, except for the jamming signal energy and enables that energy to be located close to (e.g., approximately 228 KHz) from the picture carrier in the VSB for enhanced security.
摘要翻译：使用干扰信号的加扰和解扰系统由于鬼影和伪像而提供了具有最小失真的改进图像。电视信号与优选地位于调制图像载体的残留边带（VSB）中的干扰信号或信号组合，并且在水平同步的图像载波的调制频谱中约为零。干扰信号或信号还优选地被放置在水平同步的谐波分量之间，其定义了水平同步频谱，并且频率符合有关CATV目的的强信号的频率位置的政府规定。干扰信号通过相位锁定到电视信号的水平同步信号或水平同步频率的亚数来产生。通过在与干扰信号或信号所在的边带相反的边带中预先强调发送的电视信号并且从干扰信号能量的位置间隔相等的频率增量来进一步减少伪影。为了提取干扰信号，为了解扰电视信号以在用户的电视接收机中进行再现，包括至少一个表面声波（SAW）谐振器装置的网络被嵌入在全通网络中，其允许基本上无损耗的传输的电视信号频谱，除了干扰信号能量，并使能量位于VSB中的图像载体附近（例如，大约228KHz），以增强安全性。

38. 发明授权

US4692919A Communications network 失效
标题翻译：通讯网络
公开(公告)号：US4692919A
公开(公告)日：1987-09-08
申请号：US802488
申请日：1985-11-29
申请人： Lamar E. West, Jr.
发明人： Lamar E. West, Jr.
IPC分类号： H04L12/26 , H04L12/40 , H04J3/16
CPC分类号： H04L43/10 , H04L12/40026 , H04L12/4035
摘要： In order to prevent a communications failure in a communications network wherein many terminals share a common communications channel or bus and respond to a network controller over the communications bus to enable the terminals to have access to the bus sequentially and for predetermined intervals, the command which enables the terminal to transmit is connected to an "anti-babbling" circuit which processes the enabling command and prevents the terminal from transmitting its local messages onto the bus when the enabling command does not conform to either of two critical communication protocol timing parameters. Thus, if the enabling command extends longer than the predetermined interval, or occurs at a frequency higher than the predetermined frequency required for normal communication, the "anti-babbling" circuit times-out and causes the terminal to stop transmitting. Only the terminal affected by the failure is disabled and the rest of the communications network, including the other terminals, can continue to operate.
摘要翻译：为了防止通信网络中的通信故障，其中许多终端共享公共通信信道或总线，并且通过通信总线对网络控制器进行响应，以使得终端可以顺序地和预定间隔地访问总线，该命令使终端发送连接到处理使能命令的“反笨蛋”电路，并且当使能命令不符合两个关键通信协议定时参数中的任一个时，防止终端将其本地消息发送到总线上。因此，如果使能指令延长到比预定间隔长，或者发生在高于正常通信所需的预定频率的频率上，则“反嘟嘟”电路超时并使终端停止发送。只有受故障影响的终端才能被禁用，通信网络的其余部分（包括其他终端）可以继续运行。

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