公开(公告)号：US20120038213A1

公开(公告)日：2012-02-16

申请号：US13198768

申请日：2011-08-05

申请人： Mark O. Vogel ,  John Williams ,  Mark Robert Rowe ,  Thomas Edward Raviele ,  Ronald Howard Diego ,  Jerry Darden Vereen

发明人： Mark O. Vogel ,  John Williams ,  Mark Robert Rowe ,  Thomas Edward Raviele ,  Ronald Howard Diego ,  Jerry Darden Vereen

IPC分类号： H02J9/00

CPC分类号： H02J9/061 ,  Y10T307/615

摘要： A battery backup unit (BBU) includes a housing, at least one battery compartment in the housing with an output terminal, a DC input, a DC output, a path from the DC input to the DC output, circuitry for selectively connecting the output terminal to the path, which circuitry includes a switch, and a controller configured to detect a condition of the path and selectively control the switch to connect the output terminal to the path when the condition is detected, the BBU being incapable of charging batteries in the at least one battery compartment. The path from the DC input to the DC output may include a DC/DC step up converter to help maintain a constant output voltage.

摘要翻译： 电池备用单元（BBU）包括壳体，壳体中具有输出端子的至少一个电池室，DC输入，DC输出，从DC输入到DC输出的路径，用于选择性地连接输出端子 路径，哪个电路包括开关，以及控制器，被配置为当检测到条件时检测路径的状况并选择性地控制开关以将输出端连接到路径，BBU不能在电池中对电池充电 至少一个电池仓。 从DC输入到DC输出的路径可以包括DC / DC升压转换器，以帮助保持恒定的输出电压。

公开(公告)号：US07434761B2

公开(公告)日：2008-10-14

申请号：US10440995

申请日：2003-05-19

申请人： Mark O. Vogel ,  Christopher P. Gemme ,  Mark E. Alrutz ,  Martin B. Lee

发明人： Mark O. Vogel ,  Christopher P. Gemme ,  Mark E. Alrutz ,  Martin B. Lee

IPC分类号： B65H16/06

CPC分类号： B65H75/22 ,  B65H2701/32 ,  H02G11/02

摘要： A cable deployment and storage system includes a cable reel mounting device, and a cable reel for carrying a length of cable. The cable reel includes a hub that may be rotatably mounted on the cable reel mounting device during deployment of the length of cable, a pair of inner end flanges carried by respective opposing ends of the hub, and a pair of removable outer end flanges carried by respective inner end flanges to contain the length of cable therebetween during deployment. The outer end flanges may thereafter be removed to reduce a size of the cable reel. The pair of inner end flanges may store any remaining length of cable therebetween after deployment. The cable may include connectors installed at each end during manufacturing.

摘要翻译： 电缆部署和存储系统包括电缆卷轴安装装置和用于承载一段电缆的电缆卷盘。 电缆卷轴包括一个轮毂，该轮毂在展开长度的缆线期间可旋转地安装在缆绳卷轴安装装置上，一对由轮毂的相应相对端承载的内端凸缘和一对可移除的外端缘， 相应的内端凸缘在展开期间包含其间的电缆长度。 此后可以去除外端凸缘以减小电缆卷盘的尺寸。 一对内端凸缘可以在部署之后将任何剩余长度的电缆存储在其间。 电缆可以包括在制造期间在每个端部安装的连接器。

公开(公告)号：US07145887B1

公开(公告)日：2006-12-05

申请号：US09899365

申请日：2001-07-02

申请人： Ali Akgun ,  Mark O. Vogel ,  Christopher J. Rozman

发明人： Ali Akgun ,  Mark O. Vogel ,  Christopher J. Rozman

IPC分类号： H04B7/212 ,  H04J3/06

CPC分类号： H04L12/2801 ,  H04J3/0664 ,  H04J3/0682 ,  H04L69/04

摘要： A cable modem communicates the timing of the arrival of certain packets (such as TCP ACK packets) to a cable modem termination system. This timing feature is useful in methods for increasing the throughput in the downstream direction by eliminating TCP ACKs backing up at a cable modem. In particular, a cable modem termination system implementing an unsolicited bandwidth grant service in which unsolicited grants of bandwidth are sent by the cable modem termination system to the cable modem. The grants of bandwidth are timed to arrive at the cable modem simultaneous with or shortly after the arrival of the TCP ACK from an end station connected to the cable modem. Several methods of calculating or predicting when the unsolicited grants should be sent to the cable modem are described. The method is also applicable to other types of packets, such as voice packets from a end station implementing a Voice over Internet Protocol (VoIP) application.

摘要翻译： 电缆调制解调器将某些分组（例如TCP ACK分组）到达的定时通信到电缆调制解调器终端系统。 该定时功能在通过消除在电缆调制解调器备份的TCP ACK来增加下游方向的吞吐量的方法中是有用的。 特别地，实现非请求带宽授权服务的电缆调制解调器终端系统，其中电缆调制解调器终端系统向电缆调制解调器发送带宽的非请求授权。 带宽的授权被定时以在与连接到电缆调制解调器的终端站的TCP ACK到达之后或不久之后同时到达电缆调制解调器。 描述了计算或预测何时将主动拨款发送到电缆调制解调器的几种方法。 该方法还适用于其他类型的分组，例如来自实现因特网协议语音（VoIP）应用的终端站的语音分组。

公开(公告)号：US06985437B1

公开(公告)日：2006-01-10

申请号：US09318460

申请日：1999-05-25

申请人： Mark O. Vogel

发明人： Mark O. Vogel

IPC分类号： H04J1/16

CPC分类号： H04L1/0016 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0025

摘要： A method and system for optimizing performance in a data-over-cable system. The method includes determining parameters for data transmission on an upstream channel of the data-over-cable system, and negotiating use of the parameters. A measurement is made of a signal-to-noise ratio (“SNR”) on the upstream channel. Associated with the SNR and a target packet-error-ratio (“PER”) are parameters that provide optimal data throughput. The parameters, such as symbol rate, type of modulation, or amount of error correction, are used to construct a message that is sent to the cable modems. The message instructs the cable modems to reconfigure themselves to transmit according to the parameters. The reconfiguration helps ensure optimal performance.

摘要翻译： 一种用于优化电缆数据系统性能的方法和系统。 该方法包括确定在电缆数据系统的上行信道上进行数据传输的参数，以及协商参数的使用。 测量上行信道上的信噪比（“SNR”）。 与SNR和目标分组错误率（“PER”）相关的参数是提供最佳数据吞吐量的参数。 使用诸如符号率，调制类型或纠错量的参数来构造发送到电缆调制解调器的消息。 消息指示电缆调制解调器根据参数重新配置自己进行传输。 重新配置有助于确保最佳性能。

公开(公告)号：US06944881B1

公开(公告)日：2005-09-13

申请号：US09596407

申请日：2000-06-19

申请人： Mark O. Vogel

发明人： Mark O. Vogel

IPC分类号： H04N7/173

CPC分类号： H04N7/17309 ,  H04L12/2801 ,  H04L41/0213 ,  H04L41/0672 ,  H04N21/6168

摘要： A method of preventing collisions when a cable modem re-registers with a cable modem termination system on a cable television network following failure of a primary communications channel between the cable modem and the cable modem termination system. The method provides a service identifier that is transmitted to the cable modem during initial registration of the cable modem with the cable modem termination system. Upon registration of the cable modem with the cable modem termination system, the cable modem stores the service identifier in memory. After failure of the primary channel, the cable modem reinitializes on the cable network and waits for transmission of a bandwidth allocation map from the cable modem termination system. When the cable modem receives the bandwidth allocation map, it determines if the map contains a unicast initial maintenance opportunity. When the map contains a initial maintenance opportunity having a unicast associated identifier, the cable modem compares the service identifier stored in its memory with a unique service identifier contained in the initial maintenance opportunity information element of the bandwidth allocation map. When the service identifiers match, the cable modem then uses the initial maintenance opportunity having the unicast associated identifier contained in the information element of the bandwidth allocation map to re-register with the network.

摘要翻译： 当在电缆调制解调器和电缆调制解调器终端系统之间的主要通信信道故障之后，当有线调制解调器在有线电视网络上的电缆调制解调器终端系统重新注册时，防止冲突的方法。 该方法提供了在利用电缆调制解调器终端系统初始注册电缆调制解调器时传输到电缆调制解调器的服务标识符。 电缆调制解调器在电缆调制解调器终端系统注册时，电缆调制解调器将服务标识符存储在存储器中。 主通道故障后，电缆调制解调器在有线网络上重新初始化，并等待从电缆调制解调器终端系统传输带宽分配图。 当有线调制解调器接收带宽分配图时，它确定地图是否包含单播初始维护机会。 当地图包含具有单播关联标识符的初始维护机会时，有线调制解调器将存储在其存储器中的服务标识符与包含在带宽分配映射的初始维护机会信息元素中的唯一服务标识符进行比较。 当服务标识符匹配时，电缆调制解调器然后使用包含在带宽分配映射的信息元素中的单播关联标识符的初始维护机会来重新注册到网络。

公开(公告)号：US06751230B1

公开(公告)日：2004-06-15

申请号：US09317775

申请日：1999-05-24

申请人： Mark O. Vogel ,  Ali Akgun

发明人： Mark O. Vogel ,  Ali Akgun

IPC分类号： H04J326

CPC分类号： H04L12/66

摘要： A head-end in a data-over-cable system transmits a multicast message in a downstream channel to all the cable modems in a particular MAC layer. The message includes an address field that contains an upstream channel multicast MAC address that identifies a particular channel, and is used to send a multicast message for which only cable modems transmitting in the upstream direction in that channel are to respond. When the message is received by the cable modems, the cable modems compare the upstream channel multicast MAC address with addresses stored in a memory. If a match is found, indicating that the cable modem happens to transmit in the upstream direction in the particular channel, it processes the message. If no match is found, the message is discarded. The upstream channel multicast MAC address helps noise avoidance or redundancy problems associated with a particular channel to be quickly remedied, and avoids the head-end from having to send out a large number of unicast messages in order to communicate with all the modems sharing a given upstream channel.

摘要翻译： 数据通过电缆系统中的前端将下行信道中的多播消息发送到特定MAC层中的所有电缆调制解调器。 消息包括包含识别特定信道的上行信道多播MAC地址的地址字段，并且用于发送仅在该信道中沿上行方向发送的电缆调制解调器将响应的多播消息。 当电缆调制解调器接收到消息时，电缆调制解调器将上行信道多播MAC地址与存储在存储器中的地址进行比较。 如果找到一个匹配，指示电缆调制解调器恰好在特定信道的上行方向发送，则处理该消息。 如果没有找到匹配，该消息将被丢弃。 上行信道组播MAC地址有助于消除与特定信道相关联的噪声回避或冗余问题，以便快速修复，并避免头端必须发送大量单播消息，以便与共享给定的所有调制解调器通信 上行通道。

公开(公告)号：US06742187B1

公开(公告)日：2004-05-25

申请号：US09663756

申请日：2000-09-15

申请人： Mark O. Vogel

发明人： Mark O. Vogel

IPC分类号： H04N718

CPC分类号： H04N7/17309 ,  H04J3/1694 ,  H04N21/6118 ,  H04N21/6168

摘要： An upstream channel change for a cable modem in a data-over-cable system is achieved via an upstream bandwith allocation map message sent from a cable modem termination system to cable modems, instead of requiring an exchange of upstream channel change request and reply messages. The result is that the upstream channel change can be made essentially immediately, in a deterministic fashion. As such, the upstream channel change method is particularly useful for time-sensitive applications, such as Internet telephony, VoIP, and Internet video on demand services. Load balancing can also be achieved more efficiently.

摘要翻译： 通过电缆调制解调器终端系统向电缆调制解调器发送的上行带宽分配映射消息，而不是要求交换上行信道改变请求和应答消息，来实现电缆数据系统中的电缆调制解调器的上行信道改变。 结果是可以基本上立即以确定性的方式进行上游信道改变。 因此，上行信道改变方法对于诸如因特网电话，VoIP和因特网视频点播服务的时间敏感应用特别有用。 还可以更有效地实现负载平衡。

公开(公告)号：US06963541B1

公开(公告)日：2005-11-08

申请号：US09796585

申请日：2001-02-27

申请人： Mark O. Vogel ,  Stephen Maynard

发明人： Mark O. Vogel ,  Stephen Maynard

IPC分类号： H04L12/24 ,  H04L12/26 ,  H04L12/28

CPC分类号： H04L41/0856 ,  H04L12/2801 ,  H04L41/0806 ,  H04L41/0816 ,  H04L41/083 ,  H04L41/0893

摘要： A message structure is provided for assigning transmission profiles to individual modems for modem transmissions in an upstream direction, on a modem by modem basis. The profiles define a set of transmission parameters, e.g., forward error correction information, symbol rate, frequency, modulation type, etc. that the modem should use to optimize their transmission in the upstream direction in order to maximize throughput. The invention is applicable to both wireless and land-based communications systems, particularly those adhering to the Data-Over-Cable Service Interface Specifications (“DOCSIS”)—Radio Frequency Interface Specification standard, or other standards which are analogous to the DOCSIS standard. The message structure can consist of two parts—a first part that defines a plurality of different types of transmission profiles, and a second part that assigns a particular profile to a modem. In a DOCSIS embodiment, the first part is contained in a UCD packet and the second part is contained in a MAP packet.

摘要翻译： 提供了一种消息结构，用于通过调制解调器在调制解调器上向上游方向分配用于调制解调器传输的各个调制解调器的传输简档。 简档定义了一组传输参数，例如调制解调器应该使用的前向纠错信息，符号率，频率，调制类型等来优化其在上游方向上的传输，以便最大化吞吐量。 本发明适用于无线和陆基通信系统，特别是那些遵循数据电缆业务接口规范（“DOCSIS”） - 射频接口规范标准或类似于DOCSIS标准的其他标准的通信系统。 消息结构可以由两部分组成，第一部分定义多种不同类型的传输简档，第二部分将特定配置文件分配给调制解调器。 在DOCSIS实施例中，第一部分包含在UCD分组中，第二部分包含在MAP分组中。

公开(公告)号：US06819842B1

公开(公告)日：2004-11-16

申请号：US10640813

申请日：2003-08-14

申请人： Mark O. Vogel ,  Christopher P. Gemme ,  Mark E. Alrutz ,  Martin B. Lee

发明人： Mark O. Vogel ,  Christopher P. Gemme ,  Mark E. Alrutz ,  Martin B. Lee

IPC分类号： G02B644

CPC分类号： G02B6/483

摘要： An aerial fiber optic cable system includes a distribution cable extending along an aerial route, a splice enclosure connected to the distribution cable along the aerial route, and a first sub-distribution fiber optic system extending along the aerial route in a first direction away from the fiber optic splice enclosure. The first sub-distribution system may include spaced apart fiber optic taps along the aerial route, a first sub-distribution fiber optic cable between the fiber optic splice enclosure and a first fiber optic tap, and at least one second sub-distribution fiber optic cable between adjacent fiber optic taps so that the first sub-distribution fiber optic cable and the at least one second sub-distribution fiber optic cable are arranged in end-to-end relation. The system may also or alternately include a similar lateral sub-distribution system.

摘要翻译： 空中光缆系统包括沿着空中路线延伸的分配电缆，沿着空中路线连接到分配电缆的接头外壳，以及沿空中线路沿第一方向延伸的第一子配电光纤系统，远离 光纤接头外壳。 第一子分配系统可以包括沿着空中路线的间隔开的光纤抽头，在光纤接头外壳和第一光纤分接头之间的第一子分配光缆，以及至少一个第二子分配光缆 在相邻的光纤抽头之间，使得第一子分配光纤电缆和至少一个第二子分配光纤电缆以端对端关系布置。 该系统还可以或者可选地包括类似的横向子分布系统。

公开(公告)号：US06804262B1

公开(公告)日：2004-10-12

申请号：US09560087

申请日：2000-04-28

申请人： Mark O. Vogel ,  Philip T. Robinson

发明人： Mark O. Vogel ,  Philip T. Robinson

IPC分类号： H04J100

CPC分类号： H04L12/2801 ,  H04B17/327 ,  H04L25/022 ,  H04N17/00 ,  H04N17/004

摘要： In a data-over-cable system, a cable head-end transmits a signal that includes a plurality of analog television signal components an at least one quadrature amplitude modulated (QAM) digital signal component, the signal components being defined by frequency channels. A cable modem has a tunable frequency selection system, operable at a first bandwidth, corresponding to the bandwidth of the frequency channels, and at a second, substantially narrower bandwidth, that provides a filtered signal and a power measurement system that measures the power level of the filtered signal. The frequency selection system scans through the channels, operating at its second bandwidth, and, in each channel, tunes to a first frequency and a second frequency. The power levels of the filtered signals from the first and second frequencies are measured and compared to distinguish the QAM digital signal components from the other signal components.

摘要翻译： 在电缆数据传输系统中，电缆头端传输包括多个模拟电视信号分量的至少一个正交幅度调制（QAM）数字信号分量的信号，所述信号分量由频道定义。 电缆调制解调器具有可调谐的频率选择系统，其可在对应于频率信道的带宽的第一带宽上工作，并且在第二，基本上较窄的带宽上提供滤波信号，并且功率测量系统测量功率电平 滤波信号。 频率选择系统通过信道扫描，以其第二带宽工作，并且在每个信道中调谐到第一频率和第二频率。 测量和比较来自第一和第二频率的滤波信号的功率电平，以将QAM数字信号分量与其它信号分量区分开。