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    UPSTREAM ONLY LINECARD WITH FRONT END MULTIPLEXER FOR CMTS
    1.
    发明申请
    UPSTREAM ONLY LINECARD WITH FRONT END MULTIPLEXER FOR CMTS 审中-公开
    上位机仅用于CMTS的前端多路复用器

    公开(公告)号：WO2005122580A2

    公开(公告)日：2005-12-22

    申请号：PCT/US2005/018727

    申请日：2005-05-26

    Applicant: TERAYON COMMUNICATION SYSTEMS, INC. ,  RAKIB, Shlomo, Selm ,  AZENKOT, Yehuda

    Inventor： RAKIB, Shlomo, Selm ,  AZENKOT, Yehuda

    IPC: H04N7/173

    CPC classification number: H04L12/2801 ,  H04H20/78 ,  H04L5/06 ,  H04L27/0002

    Abstract: An upstream line card including a digital or analog multiplexer front end circuit for a Cable Modem Termination System. Each upstream line card has only upstream receivers and allows a CMTS to share one or a handful of receiver chips to receive and recover data from a larger number of input cables coupled to the front end multiplexer. A control circuit for the multiplexer uses MAP data and burst assignment data and upstream mini-slot counts for each of the input cables to determine when a burst is about to arrive on a cable and cause appropriate switching by the multiplexer or crossbar switch. In some embodiments, there is only one RF channel circuit coupled to the output of the multiplexer, so the multiplexer is controlled to couple the input cable upon which the burst is expected to the single RF channel. In other embodiments, there are multiple RF channels coupled to the inputs of the multiplexer so the multiplexer is controlled to connect each input cable on which a burst is expected to an available RF channel. In some embodiments, the sample data generated by each RF channel is buffered and an arbiter picks one burst at a time for application to the input of a CMTS receiver or doles out bursts to different receivers. In other embodiments, no buffers or arbiter are used, and each RF channel has its own dedicated CMTS receiver.

    Abstract translation: 上游线卡包括用于电缆调制解调器终端系统的数字或模拟多路复用器前端电路。 每个上游线路卡仅具有上游接收器，并且允许CMTS共享一个或几个接收器芯片以从耦合到前端多路复用器的较大数量的输入电缆接收和恢复数据。 用于多路复用器的控制电路使用每个输入电缆的MAP数据和脉冲串分配数据和上游微时隙计数来确定突发将何时到达电缆并且由多路复用器或交叉开关引起适当的切换。 在一些实施例中，只有一个RF通道电路耦合到多路复用器的输出，因此多路复用器被控制以将突发预期的输入电缆耦合到单个RF信道。 在其他实施例中，存在耦合到多路复用器的输入的多个RF信道，从而控制多路复用器以将期望突发的每个输入电缆连接到可用的RF信道。 在一些实施例中，由每个RF信道生成的采样数据被缓冲，并且仲裁器一次选择一个突发，以应用于CMTS接收机的输入或者将不同的接收器的数据脉冲发送。 在其他实施例中，不使用缓冲器或仲裁器，并且每个RF信道具有其自己的专用CMTS接收器。

    DETECTION OF IMPULSE NOISE USING UNUSED SPREADING CODES
    2.
    发明申请
    DETECTION OF IMPULSE NOISE USING UNUSED SPREADING CODES 审中-公开

    公开(公告)号：WO2004029554A3

    公开(公告)日：2004-04-08

    申请号：PCT/US2003/030321

    申请日：2003-09-23

    Applicant: TERAYON COMMUNICATION SYSTEMS, INC.

    Inventor： YEHUDA, AZENKOT ,  SELIM SHLOMO, Rakib ,  ZHENZHONG, Gu

    IPC: H04B001/69

    Abstract: An impulse detector which can detect both low and high levels of impulse noise in a CDMA system is comprised of circuitry to calculate the background noise level in unused codes. Another circuit calculates the average noise power in the unused codes of each spreading interval to output the noise power per spreading interval. This average is continuously averaged over spreading intervals by another circuit which outputs the average background noise power. A comparator compares the noise power in the current spreading interval with the background noise power plus a programmable threshold and generates an erasure indication if the background noise power plus a discrimination threshold is exceeded.

    ACTIVE CABLE MODEM OUTSIDE CUSTOMER PREMISES
    3.
    发明申请
    ACTIVE CABLE MODEM OUTSIDE CUSTOMER PREMISES 审中-公开
    主动电缆调制解调器外部客户

    公开(公告)号：WO2003021803A1

    公开(公告)日：2003-03-13

    申请号：PCT/US2002/021214

    申请日：2002-07-01

    Applicant: TERAYON COMMUNICATION SYSTEMS, INC.

    Inventor： RAKIB, Selim, Shlomo

    IPC: H04B1/38

    CPC classification number: H04L45/10 ,  H04N7/106 ,  H04N7/108

    Abstract: A signal distribution system to save on the cost of cable modems for cable TV headend operators who wish to deliver broadband digital data services, DSL, video-on-demand or POTS service over their HFC CATV delivery networks. All species within the genus have a shared cable modem and a filtration and combining circuit comprised of a plurality of diplexer filters or junction boxes or both which mix baseband packet data with analog CATV signals onto coax drop lines coupled to the various subscribers and connect POTS or DSL signals onto twisted pair portions of siamese cables. Various species have the cable modem feeding digital data or packets of DOCSIS or other data or digitized DSL signals sent over the HFC to the cable modem or digitized POTS signals send over the HFC to the cable modem to either a packet switch, a DSL concentrator, a voice-over-IP gateway or some combination of the above. This data is either delivered to each subscriber as LAN packets or analog POTS signals or DSL signals or some combination of the above using coaxial cable or siamese cable drop lines.

    Abstract translation: 一种信号分配系统，用于节省有线电视前端运营商的有线调制解调器的成本，希望通过其HFC CATV传输网络提供宽带数字数据服务，DSL，视频点播或POTS服务。 该属内的所有种类都具有共享电缆调制解调器和由多个双工器滤波器或接线盒或两者组成的滤波和组合电路，其将基带分组数据与模拟CATV信号混合到耦合到各种用户的同轴电缆放线上，并连接POTS或 DSL信号到暹罗电缆的双绞线部分。 各种物种将电缆调制解调器馈送数字数据或DOCSIS数据包或通过HFC发送到电缆调制解调器的其他数据或数字化DSL信号，或数字化的POTS信号通过HFC发送到电缆调制解调器到分组交换机，DSL集中器， IP语音网关或上述的某种组合。 该数据作为LAN分组或模拟POTS信号或DSL信号或者使用同轴电缆或暹罗电缆下拉线的上述的一些组合来递送给每个用户。

    SYSTEM AND METHOD FOR PERFORMING EFFICIENT PROGRAM ENCODING WITHOUT SPLICING INTERFERENCE
    7.
    发明申请
    SYSTEM AND METHOD FOR PERFORMING EFFICIENT PROGRAM ENCODING WITHOUT SPLICING INTERFERENCE 审中-公开
    用于无间断干扰地执行有效程序编码的系统和方法

    公开(公告)号：WO2008079160A1

    公开(公告)日：2008-07-03

    申请号：PCT/US2007/010101

    申请日：2007-04-24

    Applicant: TERAYON COMMUNICATION SYSTEMS, INC. ,  QUINARD, Fabrice, Michel Raymond

    Inventor： QUINARD, Fabrice, Michel Raymond

    IPC: H04L9/00

    CPC classification number: H04L63/0428 ,  H04L9/065

    Abstract: Multiple-frame format data streams are selectively encrypted at a master head-end prior to distribution. Selective encryption includes monitoring packet for frame header information. Only packets that do not contain frame header information are encrypted, while those that contain frame header information are left unencrypted. Splicers at distribution hubs can then interject local content into the data streams and forward these to individual subscribers at the local node groups.

    Abstract translation: 多帧格式数据流在分发之前在主头端被选择性地加密。 选择性加密包括监视帧头信息的数据包。 只有不包含帧头信息的数据包被加密，而包含帧头信息的数据包不被加密。 分销中心的接头可以将本地内容插入到数据流中，并将其转发到本地节点组的单个用户。

    METHOD AND APPARATUS FOR TRANSFERRING DIGITAL DATA BETWEEN CIRCUITS
    8.
    发明申请
    METHOD AND APPARATUS FOR TRANSFERRING DIGITAL DATA BETWEEN CIRCUITS 审中-公开
    用于在电路之间传输数字数据的方法和设备

    公开(公告)号：WO2008024181A2

    公开(公告)日：2008-02-28

    申请号：PCT/US2007/017132

    申请日：2007-07-31

    Applicant: TERAYON COMMUNICATION SYSTEMS, INC. ,  PERERA, Jane ,  YOUNG, Joseph, D.

    Inventor： PERERA, Jane ,  YOUNG, Joseph, D.

    IPC: G06K9/36 ,  G06K9/46 ,  H04B1/66 ,  H04N11/02 ,  H04N7/12 ,  H04N11/04

    CPC classification number: H04N21/2343 ,  H04N19/40 ,  H04N19/428 ,  H04N19/44 ,  H04N19/61 ,  H04N19/93 ,  H04N21/4402

    Abstract: A method and apparatus transfer digital data between a coder/decoder circuit and a signal processor. The transfer of the digital data includes (a) obtaining, at a first circuit, a block of data values having certain statistical characteristics, the first circuit being one of the coder/decoder circuit and the signal processor, (b) generating, at the first circuit, a data stream by encoding the block of data values based on the statistical characteristics thereof, (c) transferring the data stream to a second circuit via a data bus connecting the first circuit and the second circuit, the second circuit being the other of the coder/decoder circuit and the signal processor, and (d) reconstructing, at the second circuit, the block of data values by decoding the data stream received from the first circuit.

    Abstract translation: 一种方法和设备在编码器/解码器电路和信号处理器之间传输数字数据。 数字数据的传送包括：（a）在第一电路获得具有某些统计特性的数据值块，第一电路是编码器/解码器电路和信号处理器中的一个;（b）在 第一电路，通过基于数据值的统计特征对数据值块进行编码而得到数据流，（c）经由连接第一电路和第二电路的数据总线将数据流传送到第二电路，第二电路是另一个电路 （d）通过对从第一电路接收的数据流进行解码，在第二电路重建数据值块。

    SIMPLIFIED NARROWBAND EXCISION
    9.
    发明申请
    SIMPLIFIED NARROWBAND EXCISION 审中-公开
    简化的窄带练习

    公开(公告)号：WO2006020132A2

    公开(公告)日：2006-02-23

    申请号：PCT/US2005/025302

    申请日：2005-07-15

    Applicant: TERAYON COMMUNICATION SYSTEMS, INC. ,  ARAD, Oren

    Inventor： ARAD, Oren

    IPC: H04K1/10

    CPC classification number: H04B1/7101 ,  H04B1/7102

    Abstract: An improved ingress cancellation filter comprising a Fast Fourier Transform circuit which replaces the analysis filter bank of the prior art to break the incoming signal down into sub bands, an ingress cancellation filter that weights each sub band based upon the probability that the sub band is corrupted by noise, and an inverse Fast Fourier Transform circuit to put the weighted sub bands back together into an output signal and replacing the synthesis filter bank of the prior art. Also, an improved predictor filter which can be used with CDMA circuitry by initializing the predictor filter at the beginning of each spreading interval using the samples received on the first L unused codes of the spreading interval.

    Abstract translation: 一种改进的入口消除滤波器，包括快速傅里叶变换电路，其替换现有技术的分析滤波器组以将输入信号分解成子带;入口抵消滤波器，其基于子带被破坏的概率对每个子带进行加权 以及快速傅里叶逆变换反相电路，将加权子带放回到输出信号中并代替现有技术的合成滤波器组。 此外，改进的预测器滤波器可以通过使用在扩展间隔的第一L个未使用的代码上接收的样本在每个扩展间隔开始时初始化预测器滤波器与CDMA电路一起使用。

    SYSTEM FOR LOW NOISE AGGREGATION IN DOCSIS CONTENTION SLOTS IN A SHARED UPSTREAM RECEIVER ENVIRONMENT
    10.
    发明申请
    SYSTEM FOR LOW NOISE AGGREGATION IN DOCSIS CONTENTION SLOTS IN A SHARED UPSTREAM RECEIVER ENVIRONMENT 审中-公开
    共享式UPS接收机环境中DOCSIS接收单元中低噪声聚集系统

    公开(公告)号：WO2005120191A2

    公开(公告)日：2005-12-22

    申请号：PCT/US2005/018877

    申请日：2005-05-26

    Applicant: TERAYON COMMUNICATION SYSTEMS, INC. ,  RAKIB, Shlomo, Selim ,  AZENKOT, Yehuda

    Inventor： RAKIB, Shlomo, Selim ,  AZENKOT, Yehuda

    IPC: H04L12/28

    CPC classification number: H04L12/2801

    Abstract: A cable modem termination system is disclosed with flexible mapping of upstreams to downstreams and flexible mapping of downstreams to optical nodes and optical nodes to upstream receivers and the ability to add singe upstreams or downstreams as needed for load balancing. Multiple downstreams can share the same upstream. Multiple receivers can be coupled to the same upstream. Monitoring of upstream performance for overperforming or underperforming modems can be carried out, and new upstreams with higher and/or lower throughtput can be created to service the overperformers and/or underperformers. Modems can be grouped into logical groups with different performance levels and serviced by different upstreams or different upstream logical channels on the same upstream physical channel. An upstream linecard with a digital crosspoint switch is disclosed with the switch operated during contention intervals to allow reception with or without aggregation of noise where multiple upstream share the same receiver.

    Abstract translation: 公开了一种电缆调制解调器端接系统，其具有上游到下游的灵活映射以及下游到光学节点和光节点到上游接收机的灵活映射，以及根据负载平衡需要添加单个上游或下游的能力。 多个下游可以共享相同的上游。 多个接收器可以耦合到同一上游。 可以对超调或表现不佳的调制解调器的上游性能进行监控，并且可以创建具有更高和/或更低吞吐量的新上游来为超控器和/或表现不佳者提供服务。 调制解调器可以分组成具有不同性能级别的逻辑组，并由同一上游物理信道上的不同上游或不同的上行逻辑信道进行服务。 公开了具有数字交叉点开关的上行线卡，其中交换机在竞争间隔期间操作，以允许在有或没有聚合噪声的情况下接收，其中多个上行链路共享同一接收机。

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