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61.发明授权Process for determining an echo path flat delay and echo canceler using said process 失效用于使用所述过程确定回波路径平坦延迟和回波消除器的过程
公开(公告)号：US4764955A
公开(公告)日：1988-08-16
申请号：US919724
申请日：1986-10-16
申请人： Claude Galand , Guy Platel
发明人： Claude Galand , Guy Platel
IPC分类号： H04B3/23
CPC分类号： H04B3/23
摘要： In a voice transmission network having an echo canceler including a flat delay line in series with an adaptive digital filter, a process is provided for adjusting the flat delay line length, thus enabling limiting the filter length to minimal value. The method is based on intercorrelation operations. It includes first intercorrelating sequences of energy values of blocks or consecutive samples, to derive a rough flat delay estimation therefrom; then intercorrelating sequences of signal samples with one of the sequences being roughly delayed, to derive therefrom an accurate flat delay estimation.
摘要翻译： 在具有包括与自适应数字滤波器串联的平坦延迟线的回波消除器的语音传输网络中，提供了一种用于调整平面延迟线长度的过程，从而能够将滤波器长度限制到最小值。 该方法基于互相关操作。 它包括块或连续样本的能量值的第一相互关联序列，以从其导出粗略的平坦延迟估计; 那么信号样本的相关序列与其中一个序列被大致延迟，从而得到精确的平坦延迟估计。
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62.发明授权
公开(公告)号：US4672669A
公开(公告)日：1987-06-09
申请号：US616021
申请日：1984-05-31
CPC分类号： G10L25/78 , H04J3/1688 , H04J3/175
摘要： Speech signal presence is detected in a VAD (Voice Activity Detector) in two steps: (1) Signal energy above a threshold decides presence, below threshold decides ambiguity; (2) ambiguity is resolved by testing the rate of change of spectral parameters.
摘要翻译： 在VAD（语音活动检测器）中检测到语音信号存在两个步骤：（1）高于阈值的信号能量决定存在，低于阈值决定歧义; （2）通过测试光谱参数的变化率来解决歧义。
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63.发明授权Transmission method for transmitting voice and data information over telephone line and device for implementing said method 失效用于通过电话线路发送语音和数据信息的传输方法以及用于实现所述方法的装置
公开(公告)号：US4479213A
公开(公告)日：1984-10-23
申请号：US399935
申请日：1982-07-19
申请人： Claude Galand , Henri Nussbaumer
发明人： Claude Galand , Henri Nussbaumer
CPC分类号： H04M11/062 , H04B1/667
摘要： The method allows voice and data information to be concentrated over a reduced number of telephone lines. It consists mainly in processing each voice signal to extract therefrom a so-called analog base band signal and digitally coded characteristic parameters. Said parameters are then multiplexed with pure data and submitted to a modulation operation. The analog signal resulting from the modulation is then added to the base band before being transmitted over a telephone line.
摘要翻译： 该方法允许语音和数据信息集中在减少数量的电话线上。 它主要在于处理每个语音信号以从中提取所谓的模拟基带信号和数字编码的特征参数。 所述参数然后与纯数据复用并提交到调制操作。 然后，在通过电话线传输之前，将由调制产生的模拟信号添加到基带。
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公开(公告)号：US07574738B2
公开(公告)日：2009-08-11
申请号：US10288574
申请日：2002-11-06
IPC分类号： G06F15/16
CPC分类号： H04L12/4641 , H04L63/0236 , H04L63/0254 , H04L63/0263 , H04L63/0272 , H04L63/0281 , H04L63/08 , H04L63/0823 , H04L63/083 , H04L63/0869 , H04L63/101 , H04L63/20
摘要： A method and system for enabling interconnection of VPNs is disclosed. An interconnection device manages an interconnection process at one or more facilities including, for example, a gateway device. The gateway device has information relating to a plurality of VPNs, and may facilitate interconnection between devices on at least two of the VPNs by determining that one device is in fact a member of a first one of the VPNs, and by forwarding connection parameters of the first VPN to the second VPN on an as-needed basis. In this way, the gateway allows interconnection without the need for a completely centralized decision-making process, and does so independently of the type of device and/or VPN(s) being used. Moreover, the gateway may implement only those VPN parameters needed by both VPNs to communicate with one another with a desired level of security, thereby simplifying the routing and forwarding processes associated with the actual communication occurring via the interconnection. The information related to the plurality of VPNs and their respective member devices may be stored in a mapping table at the gateway, and identification parameters of a device seeking interconnection and/or associated VPN parameters may be verified by the use of digital certificates.
摘要翻译： 公开了一种实现VPN互连的方法和系统。 互连设备管理包括例如网关设备在内的一个或多个设施的互连处理。 网关设备具有与多个VPN相关的信息，并且可以通过确定一个设备实际上是VPN中的第一个的成员，并且通过转发所述VPN中的第一个VPN的连接参数来促进至少两个VPN中的设备之间的互连 第一个VPN到第二个VPN根据需要。 以这种方式，网关允许互连，而不需要完全集中的决策过程，并且独立于正在使用的设备和/或VPN的类型。 此外，网关可以仅实现两个VPN所需的VPN参数，以便以期望的安全级别彼此通信，从而简化与通过互连发生的实际通信相关联的路由和转发过程。 与多个VPN及其各自的成员设备相关的信息可以存储在网关的映射表中，并且可以通过使用数字证书来验证寻求互连和/或相关VPN参数的设备的识别参数。
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65.发明授权Multipoint server for providing secure, scaleable connections between a plurality of network devices 有权多点服务器，用于在多个网络设备之间提供安全，可扩展的连接公开(公告)号：US07562386B2
公开(公告)日：2009-07-14
申请号：US11703021
申请日：2007-02-06
IPC分类号： G06F15/00
CPC分类号： H04L63/0272 , H04L63/065 , H04L63/08 , H04L63/164
摘要： A method and system for implementing secure communications between a plurality of devices are provided. The method and system generally include the provision of at least one common encryption parameter to each of the plurality of devices, as well as an identification of the plurality of devices to one another. This information can be maintained and shared by interaction of the plurality of devices with a designated server device. In this way, a secure, point-to-point connection between at least two of the plurality of devices can be established.
摘要翻译： 提供了用于实现多个设备之间的安全通信的方法和系统。 该方法和系统通常包括向多个设备中的每一个提供至少一个公共加密参数，以及将多个设备彼此的标识。 可以通过多个设备与指定的服务器设备的交互来维护和共享该信息。 以这种方式，可以建立多个设备中的至少两个之间的安全的点对点连接。
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公开(公告)号：US07448081B2
公开(公告)日：2008-11-04
申请号：US11525399
申请日：2006-09-22
IPC分类号： G06F15/00
CPC分类号： H04L63/0209 , H04L63/0272 , H04L63/0435 , H04L63/0464
摘要： A method and system for implementing secure network communications between a first device and a second device, at least one of the devices communicating with the other device via a firewall device, are provided. The method and system may include obtaining an encryption parameter that is shared by the first device, second device and firewall device. A data packet sent by the first device may then be copied within the firewall device, so that decryption of the copy of the data packet within a portion of the firewall device may take place. In particular, the portion of the firewall device in which decryption takes place is defined such that contents of the portion are inaccessible to an operator of the firewall device. Thus, scanning of the decrypted copy of the data packet for compliance with a predetermined criterion may take place within the firewall device, without an operator of the firewall device having access to the contents of the data packet to be transmitted. Thereafter, the original data packet can be forwarded to its originally intended recipient.
摘要翻译： 提供了一种用于在第一设备和第二设备之间实现安全网络通信的方法和系统，至少一个设备经由防火墙设备与另一设备通信。 该方法和系统可以包括获得由第一设备，第二设备和防火墙设备共享的加密参数。 然后可以在防火墙设备内复制由第一设备发送的数据分组，从而可以在防火墙设备的一部分内对数据分组的副本进行解密。 特别地，定义防火墙设备中发生解密的部分，使得该部分的内容对于防火墙设备的操作者是不可访问的。 因此，在防火墙设备内可以进行符合预定标准的数据分组的解密副本的扫描，而防火墙设备的操作者可以访问要发送的数据分组的内容。 此后，可以将原始数据分组转发到其原始的接收者。
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67.发明授权System for converting data based upon IPv4 into data based upon IPv6 to be transmitted over an IP switched network 有权用于将基于IPv4的数据转换为基于IPv6的数据的系统将通过IP交换网络发送公开(公告)号：US07369560B2
公开(公告)日：2008-05-06
申请号：US10852945
申请日：2004-05-25
CPC分类号： H04L63/0272 , H04L12/4641 , H04L29/12009 , H04L29/12358 , H04L29/12481 , H04L29/12801 , H04L45/50 , H04L61/251 , H04L61/2557 , H04L61/6004 , H04L63/101 , H04L69/16 , H04L69/167
摘要： Certain exemplary embodiments provide a method for converting data packets based upon IPv4 protocol into data packets based upon IPv6 protocol, said method comprising converting any data packet based upon the IPv4 protocol into a data packet based upon the IPv6 protocol before transmitting it to an IP switched network using information provided by an external server, and converting any data packet based upon the IPv6 protocol provided by said IP switched network into a data packet based upon the IPv4 protocol before transmitting it to a first or second workstation.
摘要翻译： 某些示例性实施例提供了一种用于基于IPv6协议将基于IPv4协议的数据分组转换成数据分组的方法，所述方法包括：在将其发送到IP交换机之前，将基于IPv4协议的任何数据分组转换为基于IPv6协议的数据分组 网络使用由外部服务器提供的信息，并且在将其发送到第一或第二工作站之前，将基于所述IP交换网络提供的IPv6协议的任何数据分组转换为基于IPv4协议的数据分组。
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公开(公告)号：US20070016947A1
公开(公告)日：2007-01-18
申请号：US11525399
申请日：2006-09-22
IPC分类号： G06F15/16
CPC分类号： H04L63/0209 , H04L63/0272 , H04L63/0435 , H04L63/0464
摘要： A method and system for implementing secure network communications between a first device and a second device, at least one of the devices communicating with the other device via a firewall device, are provided. The method and system may include obtaining an encryption parameter that is shared by the first device, second device and firewall device. A data packet sent by the first device may then be copied within the firewall device, so that decryption of the copy of the data packet within a portion of the firewall device may take place. In particular, the portion of the firewall device in which decryption takes place is defined such that contents of the portion are inaccessible to an operator of the firewall device. Thus, scanning of the decrypted copy of the data packet for compliance with a predetermined criterion may take place within the firewall device, without an operator of the firewall device having access to the contents of the data packet to be transmitted. Thereafter, the original data packet can be forwarded to its originally intended recipient.
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69.发明申请Packet header compression system and method based upon a dynamic template creation 失效基于动态模板创建的数据包头压缩系统和方法公开(公告)号：US20050041660A1
公开(公告)日：2005-02-24
申请号：US10886956
申请日：2004-07-08
CPC分类号： H04L69/04 , H03M7/3066 , H04L29/06 , H04L69/22
摘要： Header compression system for compressing the header of the data packets of a flow transmitted from an ingress node to an egress node through a data transmission network comprising template creating means, in both ingress node and egress node, adapted for creating the same compression template from a predetermined number of uncompressed data packets at the beginning of the flow respectively transmitted by the ingress node and received by the egress node, and header compression means, in the ingress node, adapted for compressing the header of each packet following the predetermined number of uncompressed data packets before transmitting it through the data transmission network, the compression being achieved by using the compression template.
摘要翻译： 标题压缩系统，用于压缩通过数据传输网络从入口节点传送到出口节点的流的数据分组的报头，包括模板创建装置，在入口节点和出口节点中适于从一个 在入口节点分别由入口节点发送并由出口节点接收的流的开始处的预定数量的未压缩数据分组和头部压缩装置，适用于压缩预定数量的未压缩数据之后的每个分组的报头 数据包在通过数据传输网络传输之前，通过使用压缩模板来实现压缩。
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公开(公告)号：US06529512B1
公开(公告)日：2003-03-04
申请号：US09031755
申请日：1998-02-27
IPC分类号： H04Q1100
CPC分类号： H04Q11/0414 , H04Q2213/13034 , H04Q2213/13056 , H04Q2213/13174 , H04Q2213/13204 , H04Q2213/13216 , H04Q2213/1329 , H04Q2213/13292 , H04Q2213/13389
摘要： A communication system and method for compressing data in a transmission system wherein multiplexed channels are transported over a transmission network of the type comprising a plurality of switching nodes interconnected by connection lines, the exchange of data signals carried out by switching the channels in the network between two exchange telephone devices, and each of the multiplexed channels transporting data bytes representing the data signals from one source exchange telephone device to one destination exchange device during an exchange of information therebetween through the intermediary of a compression/decompression device. The method comprises the steps of comparing, for each multiplexed channel, the signal value associated to each one of a plurality of “n” consecutive data bytes to a predetermined threshold; deleting, in case said signal value for all said “n” data bytes is less than the predetermined threshold, all bits which are not necessary to represent the signal value from each of the “n” data bytes; building a compression frame by concatenating either the “n” data bytes when they are not modified or the “n” modified data bytes when bits have been deleted therefrom, and adding to each of said groups an identifier indicating whether said data bytes are modified or not before transmitting said compression frame over said transmission network. Decompressing the frame by determining the identifier value indicating the composition of the bytes; removing the identifier from the bytes; loading the bytes into a buffer and transmitting the bytes to a destination exchange telephone device.
摘要翻译： 一种用于在传输系统中压缩数据的通信系统和方法，其中多路复用信道通过包括由连接线互连的多个交换节点的类型的传输网络传送，通过在网络中切换网络中的信道而进行的数据信号的交换 两个交换电话设备，并且每个复用信道在通过压缩/解压缩设备的中间交换信息期间将表示数据信号的数据字节从一个源交换电话设备传送到一个目的地交换设备。 该方法包括以下步骤：对于每个复用的信道，将与多个“n”个连续数据字节中的每一个相关联的信号值与预定阈值进行比较; 删除在所有所述“n”个数据字节的所述信号值小于预定阈值的情况下，从“n”个数据字节中的每个数据字节中不需要表示信号值的所有位; 通过在“n”数据字节未被修改时连接“n”个数据字节，或者当从其中删除位时，将“n”个修改的数据字节连接起来构建压缩帧，并向每个所述组添加指示所述数据字节是否被修改的标识符， 而不是在通过所述传输网络发送所述压缩帧之前。 通过确定指示字节的组成的标识符值来解压缩帧; 从字节中删除标识符; 将字节加载到缓冲器中并将字节传送到目的地交换电话设备。
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