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1. 发明申请

US20030100283A1 Frequency acquisition and locking detection circuit for phase lock loop 审中-公开
标题翻译：用于锁相环的频率采集和锁定检测电路
公开(公告)号：US20030100283A1
公开(公告)日：2003-05-29
申请号：US10010063
申请日：2001-11-13
申请人： Narad Networks, Inc.
发明人： Miaochen Wu , Xiangdong Zhang , Angelos Alexanian , Wei Ye
IPC分类号： H04B001/06
CPC分类号： H04L12/2801 , H03J7/20 , H03L7/095 , H03L7/12 , H04L27/3827 , H04L2027/0028 , H04L2027/0057 , H04L2027/0073
摘要： A method and apparatus for providing frequency acquisition and locking detection for a phase lock loop is disclosed. The phase lock loop locks a receiver local oscillator to the frequency and phase of an RF carrier to allow data to be recovered from the RF carrier in the receiver. An analog mixer in the phase lock loop compares the frequency and phase of a receive LO output by a voltage controlled oscillator in the phase lock loop and the received RF carrier. A locking indicator dependent on the result of the comparison indicates whether the phase lock loop is locked. The locking indicator is coupled to a comparator. The comparator generates a pulse to close a switch in order to inject a periodic sweeping signal generated by a free running multi vibrator into the phase lock loop to push the receiver LO into the locking range.
摘要翻译：公开了一种用于为锁相环提供频率采集和锁定检测的方法和装置。锁相环将接收器本地振荡器锁定到RF载波的频率和相位，以允许从接收机中的RF载波恢复数据。锁相环中的模拟混频器通过锁相环中的压控振荡器和接收的RF载波来比较接收LO输出的频率和相位。取决于比较结果的锁定指示灯指示锁相环是否锁定。锁定指示器耦合到比较器。比较器产生脉冲以闭合开关，以便将由自由运行的多个振动器产生的周期性扫描信号注入到锁相环中，以将接收器LO推入锁定范围。

2. 发明申请

US20030091124A1 Slicer circuit with ping pong scheme for data communication 审中-公开
标题翻译：切片电路采用乒乓方案进行数据通信
公开(公告)号：US20030091124A1
公开(公告)日：2003-05-15
申请号：US10012681
申请日：2001-11-13
申请人： Narad Networks, Inc.
发明人： Dev Vrat Gupta , Miaochen Wu , Xiangdong Zhang , Wei Ye
IPC分类号： H03K009/00 , H04L027/06
CPC分类号： H04L27/38
摘要： A ping-pong scheme is used to slow down data transfer speed between an analog slicer in a receiver and a digital physical layer device, while maintaining the same data throughout. Two edges of a clock are used to slice the incoming analog signal, convert the analog signal to a digital signal and latch the converted signal. A ping-pong data pipeline is provided from the analog slicer to the physical layer device.
摘要翻译：乒乓方案用于降低接收机中的模拟限幅器与数字物理层设备之间的数据传输速度，同时保持相同的数据。时钟的两个边缘用于切片输入的模拟信号，将模拟信号转换为数字信号并锁存转换后的信号。从模拟切片器到物理层设备提供乒乓数据流水线。

3. 发明申请

US20020199205A1 Method and apparatus for delivering consumer entertainment services using virtual devices accessed over a high-speed quality-of-service-enabled communications network 审中-公开
标题翻译：使用通过高速服务质量启用的通信网络访问的虚拟设备来提供消费者娱乐服务的方法和装置
公开(公告)号：US20020199205A1
公开(公告)日：2002-12-26
申请号：US10180950
申请日：2002-06-25
申请人： Narad Networks, Inc
发明人： Nitin Sonawane , Vikram Saksena
IPC分类号： H04N007/173 , H04N007/16 , H04L012/28 , H04L012/56
CPC分类号： H04N21/47202 , H04N7/17318 , H04N7/17336 , H04N21/2381 , H04N21/2543 , H04N21/2747 , H04N21/4147 , H04N21/4381 , H04N21/4622 , H04N21/4782 , H04N21/643 , H04N21/64322
摘要： A virtual storage adapter provides networked data storage to a data processing device for delivering consumer entertainment services using virtual devices accessed over a high-speed quality-of-service-enabled communications network. A data storage device emulation unit emulates the functionality of a data storage device (e.g., a DVD or a CD) and a network interface comprising an IP Small Computer System Interface (nulliSCSInull) compatible interface connects the data storage device emulation unit to an iSCSI storage gateway. The virtual storage adapter provides video on demand (nullVoDnull) services using a video on demand server comprising a video on demand portal for selection and an administration unit for billing. Personal video recorder services are also provided, including data expiration, capacity on demand, consolidated recording and community recording features.
摘要翻译：虚拟存储适配器向数据处理设备提供网络数据存储，以使用通过高速服务质量启用通信网络访问的虚拟设备来传送消费者娱乐服务。数据存储设备仿真单元模拟数据存储设备（例如，DVD或CD）的功能，并且包括IP小型计算机系统接口（“iSCSI”）兼容接口的网络接口将数据存储设备仿真单元连接到 iSCSI存储网关虚拟存储适配器使用包括用于选择的视频点播门户的视频点播服务器提供视频点播（“VoD”）服务和用于计费的管理单元。还提供个人录像机服务，包括数据到期，按需容量，综合记录和社区记录功能。

4. 发明申请

US20020105965A1 Broadband system having routing identification based switching 审中-公开
公开(公告)号：US20020105965A1
公开(公告)日：2002-08-08
申请号：US09952207
申请日：2001-09-13
申请人： Narad Networks, Inc.
发明人： Subrahmanyam Dravida , Dev V. Gupta , Sriram Narayan , Frederick Peralta , Kiran Rege , Manas Tandon
IPC分类号： H04L012/66
CPC分类号： H04L61/2015 , H04L12/2801 , H04L12/2856 , H04L12/2859 , H04L12/2876 , H04L29/12216 , H04L41/0806 , H04L41/12 , H04L41/5003 , H04L47/10 , H04L47/15 , H04L47/20 , H04L47/24 , H04L47/2416 , H04L47/2441 , H04L47/32 , H04L47/70 , H04L47/724 , H04L47/788 , H04L47/801 , H04L47/805 , H04L47/822 , H04L47/829 , H04N7/10 , H04N7/17309 , H04N21/6118 , H04N21/6168 , H04Q3/0045
摘要： Hybrid fiber/coax networks employ the existing cable plant used for cable TV and transmit data signals in a frequency bandwidth above that which is used for cable TV. As this cable plant was deployed in a tree and branch topology, data transmissions may be susceptible to noise, variable transmission loss and frequency dispersion, particularly in the upstream direction. Further, due to the tree and branch topology, homes at the far end of the network experience much greater loss than do the homes that are near to the headend/ONU. The present system uses point-to-point data links between intelligent network elements located in the feeder/distribution network to provide reliable, secure, bi-directional broadband access. Digital signals are terminated at the intelligent network elements, switched and regenerated for transmission across additional upstream or downstream data links as needed to connect a home to a headend or router. A method of communicating through the access network includes assigning a routing identification (RID) to each network element and receiving at a first network element a packet having a destination MAC address of one of the end user devices. Based on the destination MAC address of the end user device to which the particular second network element is connected, the RID of the particular second network element is inserted into the packet, to provide an augmented packet. The augmented packet is switched through at least one of the intermediate network elements to the second network element corresponding to the inserted RID. The inserted RID is removed from the received augmented packet at the second network element to provide a restored packet. The restored packet is sent to the end user device corresponding to the destination MAC address. Data links are made over relatively short runs of coax cable, which can provide greater bandwidth than the typical end-to-end feeder/distribution connection between a home and the headend or optical network unit.

5. 发明申请

US20020078464A1 Broadband system with intelligent network devices 有权
标题翻译：具有智能网络设备的宽带系统
公开(公告)号：US20020078464A1
公开(公告)日：2002-06-20
申请号：US09952374
申请日：2001-09-13
申请人： Narad Networks, Inc.
发明人： Sybrahmanyam Dravida , Prasad Dorbala , Dev V. Gupta , Satya V. Gupta
IPC分类号： H04N007/173
CPC分类号： H04L61/2015 , H04L12/2801 , H04L12/2856 , H04L12/2859 , H04L12/2874 , H04L12/2876 , H04L12/4641 , H04L29/12216 , H04L41/12 , H04L41/5003 , H04L41/5022 , H04L41/5054 , H04L41/5087 , H04L41/509 , H04L47/10 , H04L47/15 , H04L47/20 , H04L47/24 , H04L47/2416 , H04L47/2425 , H04L47/2433 , H04L47/2441 , H04L47/2491 , H04L47/32 , H04L47/70 , H04L47/724 , H04L47/788 , H04L47/801 , H04L47/805 , H04L47/822 , H04L47/829 , H04L69/40 , H04L2012/5605 , H04L2012/5606 , H04L2012/561 , H04L2012/5651 , H04L2012/5679 , H04N7/10 , H04N7/17309 , H04N21/6118 , H04N21/6168 , H04Q3/0045
摘要： Hybrid fiber/coax networks employ the existing cable plant used for cable TV and transmit data signals in a frequency bandwidth above that which is used for cable TV. As this cable plant was deployed in a tree and branch topology, data transmissions may be susceptible to noise, variable transmission loss and frequency dispersion, particularly in the upstream direction. Further, due to the tree and branch topology, homes at the far end of the network experience much greater loss than do the homes that are near to the headend/ONU. The present system, which uses point-to-point data links between intelligent network elements located in the feeder/distribution network to provide reliable, secure, bi-directional broadband access. Digital signals are terminated at the intelligent network elements, switched and regenerated for transmission across additional upstream or downstream data links as needed to connect a home to a headend or router. The intelligent network elements can be co-located with or replace the standard network elements to take advantage of existing network configurations. The standard network elements can be selectively replaced by the intelligent network elements in an incremental approach. In this manner, the data links are made over relatively short runs of coax cable, which can provide greater bandwidth than the typical end-to-end feeder/distribution connection between a home and the headend or optical network unit.
摘要翻译：混合光纤/同轴电缆网络采用用于有线电视的现有电缆设备，并以高于用于有线电视的频率带宽传输数据信号。由于该电缆厂部署在树型和分支拓扑结构中，数据传输可能会受到噪声，可变传输损耗和频率分散的影响，特别是在上行方向。此外，由于树和分支拓扑，网络远端的家庭比靠近头端/ ONU的家庭遭受更大的损失。该系统使用位于馈线/分配网络中的智能网络元件之间的点对点数据链路来提供可靠，安全的双向宽带接入。数字信号在智能网络元件处被终止，被切换和再生以用于在将家庭连接到头端或路由器所需的附加上游或下游数据链路上传输。智能网络元件可以与标准网络元件共同定位或替换，以利用现有的网络配置。标准网元可以以增量方式由智能网元选择性地替代。以这种方式，数据链路通过相对较短的同轴电缆运行进行，这可以提供比归属和前端或光网络单元之间的典型端到端馈线/分配连接更大的带宽。

6. 发明申请

US20030131075A1 Language and interface for unified network service creation, provision and deployment 审中-公开
标题翻译：用于统一网络服务创建，配置和部署的语言和接口
公开(公告)号：US20030131075A1
公开(公告)日：2003-07-10
申请号：US10247805
申请日：2002-09-19
申请人： Narad Networks, Inc.
发明人： Charles Bear , Prasad Dorbala , Sunil K. Kotagiri , Srinivas Loke , Vikram Saksena , Ravi S. Kumar , Satish L. Yellanki
IPC分类号： G06F015/16
CPC分类号： H04L41/5054 , H04L41/22 , H04L41/5087 , H04L41/509
摘要： A services definition language for seamlessly creating and maintaining services over a network service reduces deployment time, cost, and maintenance, and increases reliability. An executable element generator is operable to process module scripts, such as an XML (Extensible Markup Language) script, recognized across the execution environment. Each module script describes a network element, service, or subscription. A plurality of available services are defined, in which each of the available services corresponds to one or more of the module scripts. A script processor interprets the module script and provides it to executable element generators conversant in the script language, which process the module scripts via a GUI to produce executable objects. A service provisioning engine is operable to execute the executable objects for providing the corresponding service via the network.
摘要翻译：用于通过网络服务无缝创建和维护服务的服务定义语言可减少部署时间，成本和维护，并提高可靠性。可执行元素生成器可操作来处理模块脚本，例如在执行环境中识别的XML（可扩展标记语言）脚本。每个模块脚本描述一个网络元素，服务或订阅。定义了多个可用服务，其中每个可用服务对应于一个或多个模块脚本。脚本处理器解释模块脚本，并将其提供给脚本语言的可执行元素生成器，该脚本语言通过GUI处理模块脚本以生成可执行对象。服务提供引擎可操作以执行可执行对象，以经由网络提供对应的服务。

7. 发明申请

US20020101820A1 Broadband system with traffic policing and transmission scheduling 有权
标题翻译：具有流量监管和传输调度的宽带系统
公开(公告)号：US20020101820A1
公开(公告)日：2002-08-01
申请号：US09952481
申请日：2001-09-13
申请人： Narad Networks, Inc.
发明人： Satya V. Gupta , Sanjiv Nanda , Kiran Rege , Nitin Sonawane , Manas Tandon
IPC分类号： H04L012/26
CPC分类号： H04L61/2015 , H04L12/2801 , H04L12/2856 , H04L12/2859 , H04L12/2876 , H04L12/4641 , H04L29/12216 , H04L41/0863 , H04L41/0886 , H04L41/12 , H04L47/10 , H04L47/15 , H04L47/20 , H04L47/24 , H04L47/2416 , H04L47/2441 , H04L47/32 , H04L47/70 , H04L47/724 , H04L47/788 , H04L47/801 , H04L47/805 , H04L47/822 , H04L47/829 , H04L2012/5605 , H04L2012/5606 , H04L2012/561 , H04L2012/5651 , H04L2012/5679 , H04N7/10 , H04N7/17309 , H04N21/6118 , H04N21/6168 , H04Q3/0045 , H04Q11/0478
摘要： Hybrid fiber/coax networks employ the existing cable plant used for cable TV and transmit data signals in a frequency bandwidth above that which is used for cable TV. As this cable plant was deployed in a tree and branch topology, data transmissions may be susceptible to noise, variable transmission loss and frequency dispersion, particularly in the upstream direction. Further, due to the tree and branch topology, homes at the far end of the network experience much greater loss than do the homes that are near to the headend/ONU. The present system, which uses point-to-point data links between intelligent network elements located in the feeder/distribution network to provide reliable, secure, bi-directional broadband access. Digital signals are terminated at the intelligent network elements, switched and regenerated for transmission across additional upstream or downstream data links as needed to connect a home to a headend or router. The intelligent network elements can be co-located with or replace the standard network elements to take advantage of existing network configurations. The standard network elements can be selectively replaced by the intelligent network elements in an incremental approach. Packet handling at a network element includes receiving flows of packets from one or more devices coupled to the network element. A service instance associated with each packet in the packet flows is identified and a quality of service (QoS) class for each packet from the corresponding service instance is determined. The packet flow associated with each service instance is regulated according to corresponding policing criteria. In this manner, the data links are made over relatively short runs of coax cable, which can provide greater bandwidth than the typical end-to-end feeder/distribution connection between a home and the headend or optical network unit.
摘要翻译：混合光纤/同轴电缆网络采用用于有线电视的现有电缆设备，并以高于用于有线电视的频率带宽传输数据信号。由于该电缆厂部署在树型和分支拓扑结构中，数据传输可能会受到噪声，可变传输损耗和频率分散的影响，特别是在上行方向。此外，由于树和分支拓扑，网络远端的家庭比靠近头端/ ONU的家庭遭受更大的损失。该系统使用位于馈线/分配网络中的智能网络元件之间的点对点数据链路来提供可靠，安全的双向宽带接入。数字信号在智能网络元件处被终止，被切换和再生以用于在将家庭连接到头端或路由器所需的附加上游或下游数据链路上传输。智能网络元件可以与标准网络元件共同定位或替换，以利用现有的网络配置。标准网元可以以增量方式由智能网元选择性地替代。在网元处的分组处理包括从耦合到网元的一个或多个设备接收分组的流。识别与分组流中的每个分组相关联的服务实例，并且确定来自相应服务实例的每个分组的服务质量（QoS）类。与每个服务实例相关联的数据包流根据相应的监管标准进行调整。以这种方式，数据链路通过相对短的同轴电缆运行进行，这可以提供比归属和前端或光网络单元之间的典型端到端馈线/分配连接更大的带宽。

8. 发明申请

US20020097674A1 System and method for call admission control 审中-公开
标题翻译：呼叫准入控制系统和方法
公开(公告)号：US20020097674A1
公开(公告)日：2002-07-25
申请号：US09952327
申请日：2001-09-13
申请人： Narad Networks, Inc.
发明人： Srinivas Balabhadrapatruni , Gautam Desai , Prasad Dorbala , Ravi S. Kumar , Srinivas Loke , Sanjiv Nanda , Kiran M. Rege , Prashant Saxena , Manas Tandon
IPC分类号： H04L001/00
CPC分类号： H04L61/2015 , H04L12/2801 , H04L12/2856 , H04L12/2859 , H04L12/2876 , H04L12/4641 , H04L29/12216 , H04L41/12 , H04L41/5022 , H04L41/5035 , H04L41/5054 , H04L47/10 , H04L47/15 , H04L47/20 , H04L47/24 , H04L47/2416 , H04L47/2425 , H04L47/2441 , H04L47/2491 , H04L47/32 , H04L47/70 , H04L47/724 , H04L47/788 , H04L47/801 , H04L47/805 , H04L47/822 , H04L47/829 , H04L2012/5605 , H04L2012/5606 , H04L2012/561 , H04L2012/5651 , H04L2012/5679 , H04N7/10 , H04N7/17309 , H04N21/6118 , H04N21/6168 , H04Q3/0045
摘要： Hybrid fiber/coax networks employ the existing cable plant used for cable TV and transmit data signals in a frequency bandwidth above that which is used for cable TV. As this cable plant was deployed in a tree and branch topology, data transmissions may be susceptible to noise, variable transmission loss and frequency dispersion, particularly in the upstream direction. Further, due to the tree and branch topology, homes at the far end of the network experience much greater loss than do the homes that are near to the headend/ONU. The present system, which uses point-to-point data links between intelligent network elements located in the feeder/distribution network to provide reliable, secure, bi-directional broadband access. Connections are established by a call admission control (CAC) server which determines utilization, computes required bandwidth and selectively allows additional connections based on available bandwidth. Digital signals are terminated at the intelligent network elements, switched and regenerated for transmission across additional upstream or downstream data links as needed to connect a home to a headend or router. The intelligent network elements can be co-located with or replace the standard network elements to take advantage of existing network configurations. In this manner, the data links are made over relatively short runs of coax cable, which can provide greater bandwidth than the typical end-to-end feeder/distribution connection between a home and the headend or optical network unit.
摘要翻译：混合光纤/同轴电缆网络采用用于有线电视的现有电缆设备，并以高于用于有线电视的频率带宽传输数据信号。由于该电缆厂部署在树型和分支拓扑结构中，数据传输可能会受到噪声，可变传输损耗和频率分散的影响，特别是在上行方向。此外，由于树和分支拓扑，网络远端的家庭比靠近头端/ ONU的家庭遭受更大的损失。该系统使用位于馈线/分配网络中的智能网络元件之间的点对点数据链路来提供可靠，安全的双向宽带接入。连接由确定利用率的呼叫许可控制（CAC）服务器建立，计算所需带宽并且基于可用带宽选择性地允许附加连接。数字信号在智能网络元件处被终止，被切换和再生以用于在将家庭连接到头端或路由器所需的附加上游或下游数据链路上传输。智能网络元件可以与标准网络元件共同定位或替换，以利用现有的网络配置。以这种方式，数据链路通过相对较短的同轴电缆运行进行，这可以提供比归属和前端或光网络单元之间的典型端到端馈线/分配连接更大的带宽。

9. 发明申请

US20020075814A1 Broadband system with topology discovery 有权
标题翻译：带拓扑发现的宽带系统
公开(公告)号：US20020075814A1
公开(公告)日：2002-06-20
申请号：US09952321
申请日：2001-09-13
申请人： Narad Networks, Inc.
发明人： Gautam Desai , Prasad Dorbala , Subrahmanyam Dravida , Dev V. Gupta , Anoop Jayadevan , Kiran Rege , Manas Tandon , Sitaram Dikshitulu
IPC分类号： H04L012/28
CPC分类号： H04L61/2015 , H04L12/2801 , H04L12/2856 , H04L12/2859 , H04L12/2872 , H04L12/2876 , H04L12/4641 , H04L29/12216 , H04L41/0853 , H04L41/12 , H04L41/5003 , H04L45/02 , H04L45/026 , H04L47/10 , H04L47/15 , H04L47/20 , H04L47/24 , H04L47/2416 , H04L47/2425 , H04L47/2441 , H04L47/2491 , H04L47/32 , H04L47/70 , H04L47/724 , H04L47/788 , H04L47/801 , H04L47/805 , H04L47/822 , H04L47/829 , H04L2012/5605 , H04L2012/5606 , H04L2012/561 , H04L2012/5651 , H04L2012/5679 , H04N7/10 , H04N7/17309 , H04N21/6118 , H04N21/6168 , H04Q3/0045
摘要： Hybrid fiber/coax networks employ the existing cable plant used for cable TV and transmit data signals in a frequency bandwidth above that which is used for cable TV. As this cable plant was deployed in a tree and branch topology, data transmissions may be susceptible to noise, variable transmission loss and frequency dispersion, particularly in the upstream direction. Further, due to the tree and branch topology, homes at the far end of the network experience much greater loss than do the homes that are near to the headend/ONU. The present system, which uses point-to-point data links between intelligent network elements located in the feeder/distribution network to provide reliable, secure, bi-directional broadband access. Digital signals are terminated at the intelligent network elements, switched and regenerated for transmission across additional upstream or downstream data links as needed to connect a home to a headend or router. The intelligent network elements can be co-located with or replace the standard network elements to take advantage of existing network configurations. The standard network elements can be selectively replaced by the intelligent network elements in an incremental approach. A method of discovering the network topology includes sending a message from one of the network elements on a transmission path to a topology server, the message including information identifying the one network element. At each intermediate network element in the transmission path, information identifying each intermediate network element is appended to the message. In this manner, the data links are made over relatively short runs of coax cable, which can provide greater bandwidth than the typical end-to-end feeder/distribution connection between a home and the headend or optical network unit.
摘要翻译：混合光纤/同轴电缆网络采用用于有线电视的现有电缆设备，并以高于用于有线电视的频率带宽传输数据信号。由于该电缆厂部署在树型和分支拓扑结构中，数据传输可能会受到噪声，可变传输损耗和频率分散的影响，特别是在上行方向。此外，由于树和分支拓扑，网络远端的家庭比靠近头端/ ONU的家庭遭受更大的损失。该系统使用位于馈线/分配网络中的智能网络元件之间的点对点数据链路来提供可靠，安全的双向宽带接入。数字信号在智能网络元件处被终止，被切换和再生以用于在将家庭连接到头端或路由器所需的附加上游或下游数据链路上传输。智能网络元件可以与标准网络元件共同定位或替换，以利用现有的网络配置。标准网元可以以增量方式由智能网元选择性地替代。发现网络拓扑的方法包括从传输路径中的一个网络元件向拓扑服务器发送消息，该消息包括标识一个网络元件的信息。在传输路径中的每个中间网元处，标识每个中间网元的信息附加到该消息。以这种方式，数据链路通过相对较短的同轴电缆运行进行，这可以提供比归属和前端或光网络单元之间的典型端到端馈线/分配连接更大的带宽。

10. 发明申请

US20040014448A1 Adaptive correction of a received signal frequency response tilt 有权
标题翻译：接收信号频率响应倾斜的自适应校正
公开(公告)号：US20040014448A1
公开(公告)日：2004-01-22
申请号：US10197623
申请日：2002-07-16
申请人： Narad Networks, Inc.
发明人： Daniel B. Talbot
IPC分类号： H04L001/22 , H04B001/10 , H04B001/06 , H04B007/00
CPC分类号： H04L25/03159 , H04B17/354 , H04L2025/0342 , H04L2025/03522 , H04L2027/0057
摘要： Distortion due to transmission characteristics of a transmission medium is corrected by measuring leakage in a signal orthogonal to a received signal. The frequency response of an equalizer is adaptively adjusted until the measured leakage is at a local minimum.
摘要翻译：通过测量与接收信号正交的信号的泄漏来校正由于传输介质的传输特性引起的失真。自适应地调节均衡器的频率响应，直到测量的泄漏达到局部最小值。

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