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1. 发明授权

US07801119B2 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：US07801119B2
公开(公告)日：2010-09-21
申请号：US11953941
申请日：2007-12-11
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： H04L12/66
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。

2. 发明授权

US07614074B2 Burst-mode digital transmitter 有权
公开(公告)号：US07614074B2
公开(公告)日：2009-11-03
申请号：US09840767
申请日：2001-04-23
申请人： J. Graham Mobley , Lamar E. West, Jr.
发明人： J. Graham Mobley , Lamar E. West, Jr.
IPC分类号： H04N7/173 , H04B10/00 , H04J14/00 , H04N7/16
CPC分类号： H04B10/504 , H04B10/25751 , H04B10/25755 , H04J14/02 , H04N7/17309 , H04N21/6118 , H04N21/6168
摘要： A transmitter (305) for transmitting reverse optical signals in a broadband communications system (300) that includes a converter (320) for digitizing the analog RF signals and a carrier-detect circuit (330) coupled to the converter (320) for detecting when digital RF signals are present at the output of the converter (320). When the carrier-detect circuit (330) detects digital RF signals, the carrier-detect circuit (330) allows the digital RF signals to be transmitted upstream through the broadband communications system (300). A digital network (310) then combines the received digital RF signals with other digital RF signals from additional transmitters (305). The combined digital signals are then provided to a receiver (315) that includes a converter (335) for returning the digital RF signals to analog RF signals and then providing the analog signals to a headend for further processing.

3. 发明授权

US07218901B1 Automatic frequency control of multiple channels 有权
标题翻译：自动频率控制多个通道
公开(公告)号：US07218901B1
公开(公告)日：2007-05-15
申请号：US10245853
申请日：2002-09-17
申请人： Joseph Graham Mobley , Jiening Ao , Steven E. Blashewski , Florin Farcas , John A. Ritchie, Jr. , Lamar E. West, Jr.
发明人： Joseph Graham Mobley , Jiening Ao , Steven E. Blashewski , Florin Farcas , John A. Ritchie, Jr. , Lamar E. West, Jr.
IPC分类号： H04B1/18 , H04B7/00
CPC分类号： H04L27/2657 , H04L12/2801 , H04L27/2631 , H04L27/265 , H04L65/1016 , H04N7/10 , H04N21/2362 , H04N21/2365 , 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. Moreover, an automatic frequency control resolves some issues of a free-running clock in an upstream tuner of the central concentrator by performing adjustments based on the average frequency error of a number of active upstream tones. In the preferred embodiments of the present invention, the automatic frequency control (AFC) utilizes a feedback loop for at least each active upstream tone. Also, the average of the active upstream tones is determined and is utilized in providing feedback to adjust the automatic frequency control (AFC).
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，自动频率控制通过基于多个活动上游音调的平均频率误差进行调整来解决中央集中器的上行调谐器中的自由运行时钟的一些问题。在本发明的优选实施例中，自动频率控制（AFC）利用至少每个有源上行音调的反馈回路。此外，确定主动上游音调的平均值，并用于提供反馈以调整自动频率控制（AFC）。

4. 发明授权

US07054564B2 Open loop thermal compensation circuit that is suitable for use in burst-mode laser transmitters 有权
公开(公告)号：US07054564B2
公开(公告)日：2006-05-30
申请号：US10166803
申请日：2002-06-11
申请人： Jiening Ao , Lamar E. West, Jr.
发明人： Jiening Ao , Lamar E. West, Jr.
IPC分类号： H04B10/00
CPC分类号： H04B10/564 , H04B10/25755 , H04B10/504
摘要： The present invention is directed towards an open-loop thermal compensation circuit that is suitable for use in a burst-mode laser transmitter. The compensation circuit adjusts the optical power level to ensure that the laser diode remains at an optimum power level. The thermal compensation circuit includes a thermistor having a thermal current, which is dependent upon any temperature fluctuations, where the thermal current adjusts a laser current. A change in the laser current subsequently adjusts the optical power level. Also included is a control circuit for turning on and off the laser diode with a control current, which is dependent upon the presence or absence of incoming electrical signals.

5. 发明授权

US5854703A Hybrid fiber coax communications network 失效
标题翻译：混合光纤同轴通信网络
公开(公告)号：US5854703A
公开(公告)日：1998-12-29
申请号：US808535
申请日：1997-02-28
申请人： Lamar E. West, Jr.
发明人： Lamar E. West, Jr.
IPC分类号： H04B10/207 , H04B10/24 , H04B10/00
CPC分类号： H04B10/2503 , H04B10/272
摘要： A hybrid fiber coax communications system includes plural coaxial distribution plants, fiber optic nodes, fiber optic links and a headend. At least one subscriber is coupled to each coaxial distribution plant. In the upstream signal path, the upstream signals travel from the coaxial distribution plants to the fiber optic nodes and through the fiber optic links to the headend. In the headend, optical receivers receive each upstream signal and pass the signals to respective node switches. The node switches selectively connect the upstream signals to a demodulator. An element control manager provides a control signal to the node switches to control whether the switch is in an open or closed state. One of the switches can be selected to be closed so that the demodulator receives one of the upstream signals.
摘要翻译：混合光纤同轴通信系统包括多个同轴分配设备，光纤节点，光纤链路和头端。至少一个用户耦合到每个同轴分配设备。在上游信号路径中，上游信号从同轴分布设备传播到光纤节点并通过光纤链路前进到头端。在前端，光接收机接收每个上行信号，并将信号传递给相应的节点交换机。节点开关有选择地将上行信号连接到解调器。元件控制管理器向节点开关提供控制信号以控制开关是处于打开还是关闭状态。可以选择一个开关闭合，使得解调器接收上游信号之一。

6. 发明授权

US5289541A Interdiction method and apparatus with constant blanking and variable dwell times 失效
标题翻译：具有恒定消隐和可变停留时间的截断方法和装置
公开(公告)号：US5289541A
公开(公告)日：1994-02-22
申请号：US896709
申请日：1992-06-10
申请人： Mark E. Schutte , Lamar E. West, Jr.
发明人： Mark E. Schutte , Lamar E. West, Jr.
IPC分类号： H04N7/16 , H04N7/167
CPC分类号： H04K3/825 , H04K3/41 , H04K3/42 , H04N7/166 , H04K2203/14
摘要： An off-premises method and apparatus for the interdiction of unauthorized channels of a broadband cable television signal includes common circuitry for adjusting the amplitude and equalization levels of the broadband CATV signals and one or more subscriber modules for generating jamming signals of different frequencies which are used to interdict one or more unauthorized channels. Each subscriber module is associated with a subscriber and is programmable and addressable to adjust the jamming parameters of that subscriber independently of other subscribers. Each subscriber module circuit comprises a plurality of latches, each of which is associated with one of a plurality of digital to analog converters. Each of the digital to analog converters drives one or more frequency agile oscillators with its analog output to generate the jamming signals. The subscriber module is based on a sequential state machine which loads frequency control words corresponding to the jammed channels from a frequency control memory into each latch on a cyclic basis. The basic cycle of the jamming machine includes the blanking of the frequency agile oscillator, the loading of a frequency control word into an associated latch and digital to analog converter to hop the oscillator to the next frequency, and then the unblanking of the oscillator to generate the new frequency. The state machine is adapted to vary the hopping rate, the frequency at which the system moves from channel to channel, to provide flexibility in providing various jamming effectiveness. The hopping rate is programmable and addressable and can be adjusted over a considerable range without affecting the substantially constant blanking period between hops.
摘要翻译：用于拦截宽带有线电视信号的未授权信道的非处所方法和装置包括用于调整宽带CATV信号的幅度和均衡水平的公共电路以及用于产生使用的不同频率的干扰信号的一个或多个用户模块阻止一个或多个未授权渠道。每个用户模块与订户相关联，并且是可编程的并且可寻址，以独立于其他用户来调整该用户的干扰参数。每个用户模块电路包括多个锁存器，每个锁存器与多个数模转换器中的一个相关联。每个数模转换器通过其模拟输出驱动一个或多个频率敏捷振荡器，以产生干扰信号。订户模块基于顺序状态机，其将频繁控制存储器中对应于干扰信道的频率控制字逐个加载到每个锁存器中。干扰机的基本周期包括频率敏捷振荡器的消隐，将频率控制字加载到相关的锁存器和数模转换器中，以将振荡器跳到下一个频率，然后振荡器的非空化产生新频率。状态机适于改变跳频率，系统从频道向频道移动的频率，以提供提供各种干扰效果的灵活性。跳频率可编程和可寻址，并且可以在相当大的范围内进行调整，而不会影响跳数之间的基本恒定的消隐周期。

7. 发明授权

US5208854A Picture carrier controlled automatic gain control circuit for cable television interdiction or jamming apparatus 失效
标题翻译：用于有线电视拦截或干扰装置的图像载波控制的自动增益控制电路
公开(公告)号：US5208854A
公开(公告)日：1993-05-04
申请号：US446603
申请日：1989-12-06
申请人： Lamar E. West, Jr.
发明人： Lamar E. West, Jr.
IPC分类号： H04H20/00 , 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： An off-premises i.e. a negative or positive trap, jamming cable television or interdiction system, includes a picture carried controlled automatic gain control circuit. A broadband television signal output of a variable gain device is distributed by a radio frequency signal splitter to a number of subscribers. A portion of the output of the variable gain device comprising at least two contiguous television channels is passed to a power level detector. A detected power level is compared with a predetermined power level reference for adjusting the gain of the variable gain device. The predetermined power level reference is set to equal the attenuation between the off-premises equipment and the subscriber premises plus the desired level at the entrance to the subscriber's premises. The power level of a jamming or interdicting signal for denying access to unauthorized television programs is set to fall within a predetermined range of power levels related to the predetermined power level reference.
摘要翻译：一个非处方，即一个负面或正面的陷阱，干扰有线电视或闭路系统，包括一个带有图片的受控自动增益控制电路。可变增益器件的宽带电视信号输出由射频信号分离器分配给多个用户。包括至少两个连续的电视频道的可变增益装置的输出的一部分被传递到功率电平检测器。将检测到的功率电平与用于调整可变增益器件的增益的预定功率电平基准进行比较。预定功率电平基准被设置为等于室外设备与用户房屋之间的衰减加上用户房屋入口处的期望水平。用于拒绝访问未经授权的电视节目的干扰或干扰信号的功率电平被设置为落入与预定功率电平参考相关的功率电平的预定范围内。

8. 发明申请

US20090196205A1 CLOCK SYNCHRONIZATION IN A BIDIRECTIONAL NETWORK 有权
标题翻译：双向网络中的时钟同步
公开(公告)号：US20090196205A1
公开(公告)日：2009-08-06
申请号：US12422593
申请日：2009-04-13
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： H04L5/14 , H04L5/12 , H04J3/06
CPC分类号： H04N21/4382 , H04J4/00 , H04L7/041 , H04L12/2801 , 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. In addition, the architecture may be used as a local network such as the networks commonly called local area networks (LANs). As a local network, the architecture supports guaranteed bandwidth for delivery of data flows to a plurality of host devices. Each host device might have a network interface card (NIC) that conforms to the architecture of the preferred embodiments of the present invention. Moreover, because the architecture may peacefully coexist with other services commonly-found in cable distribution networks, these other services may also be delivered to a host device. Thus, as a non-limiting example a host device may utilize the preferred embodiments of the present invention for local area network (LAN) data communication, and may also utilize cable television video channels in the same communication medium to carry various multimedia information.
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。此外，该架构可以用作本地网络，例如通常称为局域网（LAN）的网络。作为本地网络，该架构支持用于向多个主机设备传送数据流的保证带宽。每个主机设备可以具有符合本发明的优选实施例的体系结构的网络接口卡（NIC）。此外，由于架构可能与电缆分发网络中通常发现的其他服务和平共存，所以这些其他服务也可能被传送到主机设备。因此，作为非限制性示例，主机设备可以将本发明的优选实施例用于局域网（LAN）数据通信，并且还可以利用同一通信介质中的有线电视视频信道来承载各种多媒体信息。

9. 发明授权

US07519081B2 Multi-carrier frequency-division multiplexing (FDM) architecture for high speed digital service in local networks 有权
标题翻译：用于本地网络高速数字业务的多载波频分复用（FDM）架构
公开(公告)号：US07519081B2
公开(公告)日：2009-04-14
申请号：US10245179
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 , H04L29/06027 , H04L65/1016 , H04N7/10 , H04N7/17309 , H04N21/2362 , H04N21/2365 , H04N21/2383 , H04N21/4305 , H04N21/437 , H04N21/6118 , H04N21/6168
摘要： Disclosed herein are methods of providing a client with local area network connectivity and access to other services in a cable network. One such method includes: allocating bandwidth in the network to support bi-directional data communication between the host and a central concentrator. Bandwidth is allocated for a downstream flow on at least one downstream frequency channel based on a mapping between the downstream flow and a particular octet in a downstream packet. Bandwidth is allocated for an upstream flow on at least one non-shared upstream tone. The method also includes conveying a bi-directional data flow between the host and the concentrator over the allocated bandwidth, including conveying the upstream flow using the allocated bandwidth and conveying the downstream flow using the allocated bandwidth. The method also includes utilizing bandwidth in the network not allocated to data communications to provide the host with at least one audio/visual service.
摘要翻译：这里公开的方法是向客户端提供局域网连接和对有线网络中的其他服务的访问。一种这样的方法包括：分配网络中的带宽以支持主机和中央集中器之间的双向数据通信。基于下游流与下游分组中的特定八位字节之间的映射，为至少一个下行频道上的下游流分配带宽。在至少一个非共享上行音调上为上行流分配带宽。该方法还包括通过分配的带宽在主机和集中器之间传送双向数据流，包括使用分配的带宽传送上行流，并使用分配的带宽传送下游流。该方法还包括利用未分配给数据通信的网络中的带宽来向主机提供至少一个音频/视频服务。

10. 发明申请

US20080310846A1 FREQUENCY MODULATED BURST MODE TRANSMITTER 审中-公开
标题翻译：频率调制脉冲模式发射机
公开(公告)号：US20080310846A1
公开(公告)日：2008-12-18
申请号：US11762291
申请日：2007-06-13
申请人： Lamar E. West, JR. , Pieter G. Ibelings
发明人： Lamar E. West, JR. , Pieter G. Ibelings
IPC分类号： H04B10/00
CPC分类号： H04B10/548 , H04B10/25751 , H04B10/504 , H04N7/22
摘要： The present invention is directed towards a frequency modulated burst mode optical transmitter and systems and methods related thereto. Reverse electrical signals are used to frequency modulate a carrier signal. A carrier detect circuit checks for the presence of a subcarrier signal in received reverse electrical signals. When a subcarrier signal is detected, a laser is turned on and the frequency modulated carrier signal is used to intensity modulate the laser to provide an optical signal. In the absence of a subcarrier signal, the laser is turned off and no optical signals are transmitted. By operating in a burst mode, resources are conserved as optical signals are transmitted only when content-carrying reverse electrical signals are received. A delay circuit may be included to prevent loss of any signal information
摘要翻译：本发明涉及一种调频突发模式光发射机及其相关的系统和方法。反向电信号用于对载波信号进行频率调制。载波检测电路检查接收到的反向电信号中是否存在子载波信号。当检测到副载波信号时，激光器被接通，并且使用调频载波信号对激光器进行强度调制以提供光信号。在不存在副载波信号的情况下，激光器被关闭，并且不发送光信号。通过以突发模式操作，仅当接收到携带内容的反向电信号时才发送光信号，从而节省资源。可以包括延迟电路以防止任何信号信息的丢失

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