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1. 发明授权

US06487690B1 Forward error correction system for packet based real time media 失效
标题翻译：用于基于分组的实时媒体的前向纠错系统
公开(公告)号：US06487690B1
公开(公告)日：2002-11-26
申请号：US09707567
申请日：2000-11-06
申请人： Guido M. Schuster , Jerry Mahler , Ikhlaq Sidhu , Michael Borella
发明人： Guido M. Schuster , Jerry Mahler , Ikhlaq Sidhu , Michael Borella
IPC分类号： H03M1300
CPC分类号： H04L1/008 , H04L1/0057
摘要： A computationally simple yet powerful forward error correction code scheme for transmission of real-time media signals, such as digitized voice, video or audio, in a packet switched network such as the Internet. An encoder at the sending end derives p redundancy blocks from each group of a k payload blocks and concatenates the redundancy blocks, respectively, with payload blocks in the next group of k payload blocks. At the receiving end, a decoder may recover up to p missing packets in a group of k packets, provided with the p redundancy blocks carried by the next group of k packets. The invention thereby enables correction from the loss of multiple packets in a row, without significantly increasing the data rate or otherwise delaying transmission.
摘要翻译：一种用于在诸如因特网的分组交换网络中传输诸如数字化语音，视频或音频的实时媒体信号的计算简单而强大的前向纠错码方案。发送端的编码器从k个有效载荷块的每组中导出p个冗余块，并将冗余块分别与下一组k个有效载荷块中的有效负载块相连。在接收端，解码器可以恢复一组k个分组中的p个丢失的分组，该分组具有由下一组k个分组携带的p个冗余块。因此，本发明能够从一行中的多个分组的丢失中进行校正，而不会显着增加数据速率或以其他方式延迟传输。

2. 发明授权

US6151636A Data and media communication through a lossy channel using signal conversion 失效
标题翻译：通过使用信号转换的有损通道进行数据和媒体通信
公开(公告)号：US6151636A
公开(公告)日：2000-11-21
申请号：US18872
申请日：1998-02-05
申请人： Guido M. Schuster , Jerry Mahler , Ikhlaq Sidhu , Michael Borella
发明人： Guido M. Schuster , Jerry Mahler , Ikhlaq Sidhu , Michael Borella
IPC分类号： G06F5/00 , H03M13/00
CPC分类号： H04L1/004
摘要： A method and apparatus for improving the speed and quality of end-to-end data or real-time media transmissions over an internet is disclosed. A data stream representing a media signal at a given level of compression is processed just before the data stream enters the internet. A less compressed data stream representing the same media signal is generated transmitted through the internet. Due to the lower level of compression, the underlying media signal is less sensitive to packet loss in the internet and, as a result, the media signal that arrives at the receiving end will tend to be more continuous and clear.
摘要翻译：公开了一种通过互联网提高端到端数据或实时媒体传输的速度和质量的方法和装置。在数据流进入互联网之前处理表示在给定压缩水平下的媒体信号的数据流。通过互联网发送表示相同媒体信号的较少压缩的数据流。由于较低的压缩水平，底层媒体信号对互联网中的分组丢失较不敏感，结果，到达接收端的媒体信号往往会更加连续和清晰。

3. 发明授权

US6145109A Forward error correction system for packet based real time media 失效
公开(公告)号：US6145109A
公开(公告)日：2000-11-07
申请号：US989616
申请日：1997-12-12
申请人： Guido M. Schuster , Jerry Mahler , Ikhlaq Sidhu , Michael Borella
发明人： Guido M. Schuster , Jerry Mahler , Ikhlaq Sidhu , Michael Borella
IPC分类号： H03M13/00
CPC分类号： H03M13/373 , H04L1/0041 , H04L1/0057 , H04L1/0084 , H03M13/1515
摘要： A computationally simple yet powerful forward error correction code scheme for transmission of real-time media signals, such as digitized voice, video or audio, in a packet switched network such as the Internet. An encoder at the sending end derives p redundancy blocks from each group of a k payload blocks and concatenates the redundancy blocks, respectively, with payload blocks in the next group of k payload blocks. At the receiving end, a decoder may recover up to p missing packets in a group of k packets, provided with the p redundancy blocks carried by the next group of k packets. The invention thereby enables correction from the loss of multiple packets in a row, without significantly increasing the data rate or otherwise delaying transmission.

4. 发明授权

US06243846B1 Forward error correction system for packet based data and real time media, using cross-wise parity calculation 失效
标题翻译：使用基于分组的数据和实时媒体的前向纠错系统，使用交叉奇偶校验计算
公开(公告)号：US06243846B1
公开(公告)日：2001-06-05
申请号：US09062435
申请日：1998-04-17
申请人： Guido M. Schuster , Michael Borella , Jerry Mahler , Ikhlaq Sidhu
发明人： Guido M. Schuster , Michael Borella , Jerry Mahler , Ikhlaq Sidhu
IPC分类号： H03M1300
CPC分类号： H04L1/004 , H03M13/1515 , H03M13/373
摘要： A computationally simple yet powerful forward error correction code scheme for transmission of real-time media signals, such as digitized voice, video or audio, in a packet switched network, such as the Internet. For each window of k data packets, the invention generates and transmits at least one cross-wise parity packet taken as an index-shifted function over the k data packets. The invention thereby enables a receiving end to recover from packet loss.
摘要翻译：一种用于在分组交换网络（诸如因特网）中传输诸如数字化语音，视频或音频的实时媒体信号的计算上简单而强大的前向纠错码方案。对于k个数据分组的每个窗口，本发明生成并发送在k个数据分组上被用作索引移位函数的至少一个交叉奇偶校验分组。因此，本发明使得接收端能够从分组丢失中恢复。

5. 发明授权

US06226769B1 Forward error correction system for packet based real time media 有权
标题翻译：用于基于分组的实时媒体的前向纠错系统
公开(公告)号：US06226769B1
公开(公告)日：2001-05-01
申请号：US09243955
申请日：1999-02-03
申请人： Guido M. Schuster , Jerry Mahler , Ikhlaq Sidhu , Michael Borella
发明人： Guido M. Schuster , Jerry Mahler , Ikhlaq Sidhu , Michael Borella
IPC分类号： H03M1300
CPC分类号： H04L1/008 , H03M13/2703 , H03M13/373 , H04L1/0041 , H04L1/0056
摘要： A computationally simple yet powerful forward error correction code scheme for transmission of real-time media signals, such as digitized voice, video or audio, in a packet switched network, such as the Internet. The invention appends to each of a series of payload packets a single forward error correction code that is defined by taking the XOR sum of a preceding specified number of payload packets. The invention thereby enables correction from the loss of multiple packets in a row, without significantly increasing the data rate or otherwise delaying transmission.
摘要翻译：一种用于在分组交换网络（诸如因特网）中传输诸如数字化语音，视频或音频的实时媒体信号的计算上简单而强大的前向纠错码方案。本发明通过采用先前指定数量的有效载荷分组的异或并定义的单个前向纠错码来附加到一系列有效载荷分组中的每一个。因此，本发明能够从一行中的多个分组的丢失中进行校正，而不会显着增加数据速率或以其他方式延迟传输。

6. 发明授权

US06170075A Data and real-time media communication over a lossy network 失效
标题翻译：通过有损网络进行数据和实时媒体通信
公开(公告)号：US06170075A
公开(公告)日：2001-01-02
申请号：US08993505
申请日：1997-12-18
申请人： Guido M. Schuster , Jerry Mahler , Ikhlaq Sidhu , Michael Borella
发明人： Guido M. Schuster , Jerry Mahler , Ikhlaq Sidhu , Michael Borella
IPC分类号： H03M1300
CPC分类号： H03M13/05 , H03M13/09 , H03M13/1515 , H04L1/08 , H04L2001/0097
摘要： A method and apparatus for improving the speed and quality of end-to-end data or real-time media transmissions over an internet is disclosed. A media stream being transmitted to the internet is channel coded at the edge of the internet in order to free upstream bit rate for use in source coding the media. The channel coded media stream may then be decoded at a remote edge of the internet to recover lost packets.
摘要翻译：公开了一种通过互联网提高端到端数据或实时媒体传输的速度和质量的方法和装置。正在传输到因特网的媒体流在因特网的边缘进行信道编码，以便释放用于媒体源编码的上行比特率。然后可以在互联网的边缘边解码信道编码的媒体流，以恢复丢失的分组。

7. 发明授权

US5870412A Forward error correction system for packet based real time media 失效
标题翻译：用于基于分组的实时媒体的前向纠错系统
公开(公告)号：US5870412A
公开(公告)日：1999-02-09
申请号：US989483
申请日：1997-12-12
申请人： Guido M. Schuster , Jerry Mahler , Ikhlaq Sidhu , Michael Borella
发明人： Guido M. Schuster , Jerry Mahler , Ikhlaq Sidhu , Michael Borella
IPC分类号： G06F11/00 , H03M13/00 , H03M13/27
CPC分类号： H04L1/008 , H03M13/2703 , H03M13/373 , H04L1/0041 , H04L1/0056
摘要： A computationally simple yet powerful forward error correction code scheme for transmission of real-time media signals, such as digitized voice, video or audio, in a packet switched network, such as the Internet. The invention appends to each of a series of payload packets a single forward error correction code that is defined by taking the XOR sum of a preceding specified number of payload packets. The invention thereby enables correction from the loss of multiple packets in a row, without significantly increasing the data rate or otherwise delaying transmission.
摘要翻译：一种用于在分组交换网络（诸如因特网）中传输诸如数字化语音，视频或音频的实时媒体信号的计算上简单而强大的前向纠错码方案。本发明通过采用先前指定数量的有效载荷分组的异或并定义的单个前向纠错码来附加到一系列有效载荷分组中的每一个。因此，本发明能够从一行中的多个分组的丢失中进行校正，而不会显着增加数据速率或以其他方式延迟传输。

8. 发明授权

US06570606B1 Method and apparatus for controlling transmission of media signals over a data network in response to triggering events at participating stations 失效
标题翻译：响应于参与站处的触发事件来控制数据网络上的媒体信号传输的方法和装置
公开(公告)号：US06570606B1
公开(公告)日：2003-05-27
申请号：US09087155
申请日：1998-05-29
申请人： Ikhlaq Sidhu , Guido M. Schuster , Jerry Mahler , Thomas Kostas
发明人： Ikhlaq Sidhu , Guido M. Schuster , Jerry Mahler , Thomas Kostas
IPC分类号： H04N714
CPC分类号： H04N7/141
摘要： A method and apparatus for controlling the transmission of real-time media signals over a data network based on a triggering event associated with a participating teleconference station. This triggering event may be the presence or absence of motion, the presence or absence of sound, or any of a variety of other events that preferably indicate the presence or absence of a person at the station. When no person is present at the station and/or when an appropriate triggering event occurs, remote teleconference participants will not transmit media signals over the network to the station, thereby conserving valuable network bandwidth and simulating a physically common meeting between people. In turn, when a person is present at the station and/or when another appropriate triggering event occurs, remote teleconference participants may start transmitting media signals over the network to the station. Additionally, a station may control its own transmission of media signals to remote stations in response to local triggering events, thus further conserving network resources.
摘要翻译：一种用于基于与参与电话会议站相关联的触发事件来控制数据网络上的实时媒体信号的传输的方法和装置。该触发事件可以是运动的存在或不存在，声音的存在或不存在，或者优选地指示在车站处存在或不存在人的各种其他事件中的任何一种。当没有人在车站和/或发生适当的触发事件时，远程电话会议参与者将不会通过网络将媒体信号发送到车站，从而节省宝贵的网络带宽并模拟人们之间的物理上常见的会议。反过来，当一个人出现在车站和/或当另一个适当的触发事件发生时，远程电话会议参与者可以开始通过网络向车站发送媒体信号。此外，站可以响应于本地触发事件来控制其自己的传输到远程站的媒体信号，从而进一步节省网络资源。

9. 发明授权

US06675218B1 System for user-space network packet modification 有权
标题翻译：用户空间网络数据包修改系统
公开(公告)号：US06675218B1
公开(公告)日：2004-01-06
申请号：US09134496
申请日：1998-08-14
申请人： Jerry Mahler , Michael Borella , Guido Schuster , Ikhlaq Sidhu
发明人： Jerry Mahler , Michael Borella , Guido Schuster , Ikhlaq Sidhu
IPC分类号： G06F1516
CPC分类号： H04L29/06 , H04L69/32
摘要： A system for user-space packet modification, including a set of kernel code and a user-level application programming interface (API). The system facilitates creation of a special socket for passing packets between kernel space and user space. The system in turn facilitates creation and application of a packet filter associated with the socket, in order to trap incoming or outgoing packets being processed in the kernel at a designated point in a protocol stack. Once a packet is trapped, it is moved through the socket into user space, thereby at least temporarily preventing the protocol stack from further processing the packet. In user space, an application may operate on the packet, for instance, modifying aspects of the packet or deleting the packet altogether. The system in turn facilitates injection of a packet from user space into kernel space, and into a designated point in the protocol stack for desired stack processing.
摘要翻译：用于用户空间分组修改的系统，包括一组内核代码和用户级应用程序编程接口（API）。该系统有助于创建一个特殊的套接字，用于在内核空间和用户空间之间传递数据包。该系统又促进了与套接字相关联的分组过滤器的创建和应用，以便在协议栈中的指定点捕获在内核中正在处理的进入或传出的分组。一旦数据包被捕获，它将通过套接字移动到用户空间中，从而至少暂时防止协议栈进一步处理数据包。在用户空间中，应用可以对分组进行操作，例如，修改分组的方面或完全删除分组。该系统又有助于将分组从用户空间注入到内核空间中，并且进入协议栈中的指定点以进行所需的堆栈处理。

10. 发明授权

US06269099B1 Protocol and method for peer network device discovery 失效
标题翻译：对等网络设备发现的协议和方法
公开(公告)号：US06269099B1
公开(公告)日：2001-07-31
申请号：US09108935
申请日：1998-07-01
申请人： Michael S. Borella , Guido M. Schuster , Jerry J. Mahler , Ikhlaq Sidhu
发明人： Michael S. Borella , Guido M. Schuster , Jerry J. Mahler , Ikhlaq Sidhu
IPC分类号： H04L1228
CPC分类号： H04L69/16 , H04L12/4604 , H04L41/12 , H04L45/00 , H04L69/163 , H04L69/164 , H04L69/24 , H04L69/326
摘要： A protocol and methods for peer network device discovery is presented. The peer discovery protocol includes a peer discovery marker than can be used with an existing networking protocol such as Transmission Control Protocol (“TCP”) to discover peer network devices. The peer discovery protocol also includes a peer discovery table to record network addresses of peer network devices and their associated host network devices. The peer discovery method allows a first peer network device such as an edge router, to send out a peer discovery request with the peer discovery protocol to other peer network devices as the peer network device is sending data packets for a host network device. Once a second peer network device receives a peer discovery request, the second peer network device attempts to establish a two-way, peer-to-peer data-flow to the first peer network device that sent the peer discovery requests. The peer discovery protocol and methods allow error correction, encryption, compression and other “intelligent” services to be added to peer network devices such as edge routers. The peer discovery protocol and peer discovery methods may enhance performance, reliability and security of data transmitted over the Internet to and from Autonomous Systems, subnets, or other computer networks.
摘要翻译：提出了一种用于对等网络设备发现的协议和方法。对等体发现协议包括比可以与现有网络协议（例如传输控制协议（TCP））一起使用以发现对等网络设备的对等体发现标记。对等体发现协议还包括对等体发现表，用于记录对等网络设备及其相关主机网络设备的网络地址。对等体发现方法允许诸如边缘路由器的第一对等网络设备在对等网络设备正在发送用于主机网络设备的数据分组时向其他对等网络设备发送具有对等体发现协议的对等体发现请求。一旦第二对等网络设备接收到对等体发现请求，则第二对等网络设备尝试建立到发送对等体发现请求的第一对等网络设备的双向对等数据流。对等体发现协议和方法允许将纠错，加密，压缩和其他“智能”服务添加到诸如边缘路由器的对等网络设备。对等体发现协议和对等体发现方法可以提高通过互联网传输到自治系统，子网或其他计算机网络的数据的性能，可靠性和安全性。

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