Repetitive pattern removal in a voice channel of a communication network
    1.
    发明授权
    Repetitive pattern removal in a voice channel of a communication network 失效
    在通信网络的语音信道中重复模式删除

    公开(公告)号:US6144658A

    公开(公告)日:2000-11-07

    申请号:US989585

    申请日:1997-12-12

    摘要: Repetitive packets in a voice/data stream, are detected and suppressed in the transmitting side of a network, after a predefined number of consecutive repetitive packets have been transmitted. Then, at the receiving side of the network, suppressed repetitive packets are reconstituted by filling the resulting gap in the voice/data stream with the repetitive pattern contained in the last received repetitive packet. When the input voice/data stream is compressed, only non-repetitive packets are compressed so that repetitive patterns are not corrupted by compression.

    摘要翻译: 在发送预定数量的连续重复分组之后,在网络的发送侧检测并抑制语音/数据流中的重复分组。 然后,在网络的接收侧,通过用包含在最后接收的重复分组中的重复模式填充语音/数据流中的所得到的间隙来重构抑制的重复分组。 当输入的语音/数据流被压缩时,只有非重复的数据包被压缩,使得重复的模式不被压缩破坏。

    Adaptive playout buffer and method for improved data communication
    3.
    发明授权
    Adaptive playout buffer and method for improved data communication 失效
    自适应播出缓冲器和改进数据通信的方法

    公开(公告)号:US06912224B1

    公开(公告)日:2005-06-28

    申请号:US09021707

    申请日:1998-02-10

    IPC分类号: H04L12/28 H04L12/56 H04L29/06

    CPC分类号: H04L49/90

    摘要: An adaptive apparatus and method for managing a playout buffer (POB) in an edge node of a packet-based data communications network, such as an ATM network, in order to reduce the end-to-end communication delay introduced thereby and to allow the POB filling level to be corrected in the event of clock speed differences. A monitoring mechanism determines if the minimum filling level of the playout buffer over a time period whereby the average filling level of the playout buffer is reduced according to the minimum filling level of the playout buffer over the time period.

    摘要翻译: 一种用于管理诸如ATM网络的基于分组的数据通信网络的边缘节点中的播出缓冲器(POB)的自适应装置和方法,以便减少由此引入的端到端通信延迟并允许 在时钟速度差异的情况下要纠正POB填充级别。 监视机构确定在一段时间内播放缓冲器的最小填充水平是否根据播放缓冲器在该时间段内的最小填充水平而减小播放缓冲器的平均填充水平。

    Method and a system for silence removal in a voice signal transported
through a communication network
    4.
    发明授权
    Method and a system for silence removal in a voice signal transported through a communication network 失效
    通过通信网络传输的语音信号中的静音消除方法和系统

    公开(公告)号:US5870397A

    公开(公告)日:1999-02-09

    申请号:US695280

    申请日:1996-08-06

    摘要: A method and an apparatus for removing the silence from the digitalized voice signals conveyed through packets or cells switching networks. The silence samples are neither packetized nor sent over the network but are regenerated at the output of the network. The silence samples generated are white noise samples, where the level is adapted to the background noise of the silence samples received at the input node of the network. For long periods of silence, the white noise level is periodically refreshed to be adapted to the last silence samples received at the input node of the network. The method provides also a control of packet or cell loss. The method uses are not control packets; in the later case, it can be used for ATM networks with AAL1. The method is implemented as a program executed in a Digital Signal Processor located on adapter cards dedicated to voice processing in the network access nodes.

    摘要翻译: 一种用于从通过分组或小区交换网络传送的数字化语音信号中去除静音的方法和装置。 沉默样本既不打包也不通过网络发送,而是在网络的输出端重新生成。 产生的静音样本是白噪声样本,其中该电平适应于在网络的输入节点接收的静音样本的背景噪声。 对于长时间的静音,白噪声电平被周期性刷新以适应于在网络的输入节点处接收到的最后沉默样本。 该方法还提供了分组或信元丢失的控制。 该方法使用的不是控制包; 在后一种情况下,它可以用于具有AAL1的ATM网络。 该方法被实现为位于专用于网络接入节点中的语音处理的适配卡上的数字信号处理器中执行的程序。

    Voice circuit emulation system in a packet switching network
    5.
    发明授权
    Voice circuit emulation system in a packet switching network 失效
    语音电路仿真系统在分组交换网络中

    公开(公告)号:US5600641A

    公开(公告)日:1997-02-04

    申请号:US451580

    申请日:1995-05-26

    IPC分类号: H04L12/56 H04L12/64 H04Q11/04

    摘要: Voice circuit emulation system in a packet switching network includes a plurality of switching nodes (SW-1, SW-2, . . . ) interconnected by connection lines (TL-1, TL-2, . . . ), enabling voice signals to be transmitted in circuit emulation packets from any source exchange telephone device (PBX-A) to any destination exchange telephone device (PBX-B). Each switching node (SW-1 or SW-2) includes a circuit emulation server (CES-1 or CES-2) including a plurality of connection tables corresponding each to an incoming connection line, each table containing for each incoming connection line, the identification of each outgoing connection line associated to each slot of the circuit emulation packet received from the incoming connection line and the identification of each slot of the packet to be transmitted on the outgoing connection line. A switching module looks up the connection table for each slot contained in each incoming circuit emulation packet received from all incoming lines and thereby transferring the contents thereof to the slot of the outgoing connection line identified in said connection table.

    摘要翻译: 分组交换网络中的语音电路仿真系统包括通过连接线(TL-1,TL-2 ...)互连的多个交换节点(SW-1,SW-2 ...),使得语音信号 在电路仿真包中从任何源交换电话设备(PBX-A)发送到任何目的地交换电话设备(PBX-B)。 每个交换节点(SW-1或SW-2)包括电路仿真服务器(CES-1或CES-2),该电路仿真服务器(CES-1或CES-2)包括与输入连接线对应的多个连接表,每个表包含每个输入连接线, 识别与从输入连接线接收的电路仿真分组的每个时隙相关联的每个输出连接线以及要在输出连接线上发送的分组的每个时隙的标识。 切换模块查找从所有输入线路接收到的每个输入电路仿真分组中包含的每个时隙的连接表,从而将其内容传送到在所述连接表中标识的输出连接线的时隙。

    Method and apparatus to reduce jitter and end-to-end delay for
multimedia data signalling
    6.
    发明授权
    Method and apparatus to reduce jitter and end-to-end delay for multimedia data signalling 失效
    用于减少多媒体数据信令的抖动和端到端延迟的方法和装置

    公开(公告)号:US5996018A

    公开(公告)日:1999-11-30

    申请号:US758071

    申请日:1996-11-27

    IPC分类号: G06F13/38 H04J3/06 G06F13/42

    CPC分类号: H04J3/0632 G06F13/387

    摘要: A method and an apparatus for reducing the jitter and end-to-end delay on lines of a packet switching network conveying voice or video digitalized data for one or more connections between a local source and a remote source at a constant bit rate.The method and apparatus of the invention are for use in a voice or video processor of a voice or video processing server of a network node; the method and the apparatus provide a way of controlling the remote traffic rate from the remote source before accessing the processor without using an external clocking such as the network clock.The solution proposed by the invention consists in buffering the remote and local traffics to adapt the remote traffic rate to the local traffic rate, which is supposed having a limited jitter, while sequencing of the access of the buffered data to the processor.

    摘要翻译: 一种用于减少分组交换网络的线路上的抖动和端到端延迟的方法和装置,其以恒定的比特率传送本地源和远程源之间的一个或多个连接的语音或视频数字化数据。 本发明的方法和装置用于网络节点的语音或视频处理服务器的语音或视频处理器; 该方法和装置提供了在访问处理器之前控制来自远程源的远程业务速率的方式,而不使用诸如网络时钟的外部时钟。 本发明提出的解决方案在于缓存远程和本地业务,以使远程业务速率适应本地业务速率,其被认为具有有限的抖动,同时缓冲数据到处理器的访问排序。

    Data processing method for efficiently transporting multimedia packets
over a conventional digital packet switching network
    7.
    发明授权
    Data processing method for efficiently transporting multimedia packets over a conventional digital packet switching network 失效
    用于通过传统数字分组交换网络高效传输多媒体分组的数据处理方法

    公开(公告)号:US5930265A

    公开(公告)日:1999-07-27

    申请号:US782694

    申请日:1997-01-16

    CPC分类号: H04Q11/0478 H04L2012/5652

    摘要: A data processing method for efficiently transporting multimedia data packets of fixed and/or variable length over an Assynchronous Transfer Mode (ATM) network made to transport fixed length ATM cells including a fixed length user data payload and a fixed length ATM header. The data processing method includes concatenating said fixed and/or variable length user data and appending said concatenated data with a so-called trailer defining the various concatenated user data lengths and identifications, for being further split into ATM cells payloads before being transmitted over said ATM network.

    摘要翻译: 一种数据处理方法,用于通过异步传输模式(ATM)网络高效地传输固定和/或可变长度的多媒体数据分组,用于传输固定长度的ATM信元,包括固定长度用户数据有效载荷和固定长度的ATM报头。 数据处理方法包括连接所述固定和/或可变长度的用户数据,并将所述连接的数据与定义各种级联用户数据长度和标识的所谓拖尾相连,以便在通过所述ATM发送之前进一步分割成ATM信元有效载荷 网络。

    Method of transferring structured data of constant bit rate traffic in
an ATM network
    8.
    发明授权
    Method of transferring structured data of constant bit rate traffic in an ATM network 失效
    在ATM网络中传送恒定比特流量的结构化数据的方法

    公开(公告)号:US5703878A

    公开(公告)日:1997-12-30

    申请号:US685731

    申请日:1996-07-24

    申请人: Maurice Duault

    发明人: Maurice Duault

    摘要: A method and an apparatus for transferring structured data of a constant bit rate traffic in an ATM network. The method uses the recurrence of alignment of the structured data field of length N in a 47 octet SA.sub.-- PDU payload. At the transmitting end the CSI bit of the header of the first SAR.sub.-- PDU is set to 1. It is then set to 0 for the next SAR.sub.-- PDUs until the Nth SAR.sub.-- PDU is reached. It is then again set to 1. This process is repeated until the last SAR.sub.-- PDU has been transmitted.

    摘要翻译: 一种用于在ATM网络中传送恒定比特率业务的结构化数据的方法和装置。 该方法使用47字节SA-PDU有效载荷中长度为N的结构化数据字段的重新排列。 在发送端,第一SAR-PDU的报头的CSI位被设置为1.然后,对于下一个SAR-PDU,将其设置为0,直到达到第N个SAR-PDU。 然后再次设置为1.重复该过程,直到最后一个SAR-PDU被发送。

    AAL-5 SSCS for AAL-1 and AAL-2 in ATM networks
    9.
    发明授权
    AAL-5 SSCS for AAL-1 and AAL-2 in ATM networks 失效
    ATM网络中AAL-1和AAL-2的AAL-5 SSCS

    公开(公告)号:US6108336A

    公开(公告)日:2000-08-22

    申请号:US934231

    申请日:1997-09-19

    摘要: The present invention uses the SAR and CPCS functions of the AAL-5 to define an AAL-5 SSCS for performing the AAL-1 and AAL2 functions. The defined AAL-5 format comprises a SSCS trailer of N (preferred value is 8) bytes an CPCS-PDU of N+8 (preferred value is 16) cells (16.times.48 bytes=768 bytes). In the preferred embodiment, the AAL-5 CPCS-PDU is transported inside 16 ATM cells. The CPCS and SSCS trailers provide the the same efficiency as AAL-1 and the global structure based on 16 cells is completely similar and transparent in term of delay and overhead. The payload size is 48 bytes for the 15 first cells, and 32 bytes for the last cell. The CPCS-PDU payload size is always a multiple of 8 bytes.

    摘要翻译: 本发明使用AAL-5的SAR和CPCS功能来定义用于执行AAL-1和AAL2功能的AAL-5 SSCS。 所定义的AAL-5格式包括N(优先值为8)字节的SSCS预告片,N + 8的CPCS-PDU(优选值为16)的单元(16×48字节= 768字节)。 在优选实施例中,AAL-5 CPCS-PDU在16个ATM信元内传送。 CPCS和SSCS预告片提供与AAL-1相同的效率,并且基于16个单元的全局结构在延迟和开销方面完全相似和透明。 15个第一个单元格的有效载荷大小为48个字节,最后一个单元格为32个字节。 CPCS-PDU有效载荷大小总是8字节的倍数。

    Distributed mechanism for the fast scheduling of shared objects and
apparatus
    10.
    发明授权
    Distributed mechanism for the fast scheduling of shared objects and apparatus 失效
    共享对象和设备的快速调度分布式机制

    公开(公告)号:US5428781A

    公开(公告)日:1995-06-27

    申请号:US170432

    申请日:1993-12-16

    CPC分类号: G06F9/546 G06F15/167

    摘要: In a loosely coupled multiprocessor environment wherein a plurality of processors (2) are attached to a shared intelligent memory (1), a distributed scheduling mechanism for scheduling of source processors (4) with respective server processes (5) to be executed by the processors (2) upon their attachment to a data message queue (3) contained in the shared intelligent memory (1), the processes (4, 5) using data messages enqueued into, respectively dequeued from said memory (1). According to this scheduling mechanism, an independent scheduler (6) is dedicated to each of the processes of a process group, and all the schedulers monitor the status of the data message queue, and upon receipt of an empty-to-non-empty E-NE signal, the least busy scheduler dequeues shared data from the queue, so that it can be processed by its associated process, without however, loosing fault-tolerance in case of a particular processor failing.

    摘要翻译: 在松散耦合的多处理器环境中,其中多个处理器(2)附接到共享智能存储器(1),分布式调度机制用于利用各个服务器进程(5)来调度源处理器(4)以由处理器 (2)在附加到包含在所述共享智能存储器(1)中的数据消息队列(3)时,使用进入所述存储器(1)的出队的数据消息的处理(4,5)。 根据该调度机制,专用于进程组的每个进程的独立调度器(6),并且所有调度器监视数据消息队列的状态,并且在接收到空到非空E -NE信号,最不忙的调度器将队列中的共享数据排队,以便可以通过其关联的进程来处理它,而不会在特定处理器发生故障的情况下丢失容错。