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    • 3. 发明申请
    • Peer-to-Peer Network Address Translator (NAT) Traversal Techniques
    • 对等网络地址转换器(NAT)穿越技术
    • US20100146126A1
    • 2010-06-10
    • US12328214
    • 2008-12-04
    • Qingwei LinJiang LiJian-guang LouYusuo HuFan Li
    • Qingwei LinJiang LiJian-guang LouYusuo HuFan Li
    • G06F15/16
    • H04L67/104H04L29/12509H04L29/12528H04L61/2567H04L61/2575H04L61/2589H04L63/029H04L67/1093
    • Techniques described herein perform network address translator (NAT) traversal using a peer of a peer-to-peer architecture in lieu of a server. A first peer maintains a list of public domain peers that are not hidden behind a NAT or a firewall and have previously been connected with the first peer. The first peer distributes the list to other peers via a gossip-based protocol. When a second peer desires to connect with the first peer, the second peer initiates a connection with the first peer and sends a request to a public domain peer of the list, requesting that the public domain peer instruct the first peer to initiate a connection with the second peer. By leveraging a public domain peer to establish a connection between the first and second peers, these techniques lessen the burden on the server of the architecture. Furthermore, because different peers may make requests to different public domain peers, the techniques allow for better scalability of the architecture.
    • 本文描述的技术使用对等体系结构的对等体代替服务器来执行网络地址转换器(NAT)遍历。 第一个对等体维护一个未被隐藏在NAT或防火墙后面并且之前已经与第一个对等体连接的公共域对等体的列表。 第一个对等体通过基于八卦的协议将列表分发给其他对等体。 当第二对等体希望与第一对等体连接时,第二对等体发起与第一对等体的连接,并向列表的公共域对等体发送请求,请求公共域对等体指示第一对等体发起与 第二个同伴 通过利用公共域对等体建立第一和第二对等体之间的连接,这些技术减轻了体系结构的服务器负担。 此外,由于不同的对等体可以向不同的公共域对等体发出请求,所以这些技术允许架构的更好的可扩展性。
    • 6. 发明授权
    • Lecture capture and broadcast system
    • 讲座和播放系统
    • US08239905B2
    • 2012-08-07
    • US12357627
    • 2009-01-22
    • Fan LiJian-guang LouYusuo HuQingwei LinJiang Li
    • Fan LiJian-guang LouYusuo HuQingwei LinJiang Li
    • H04N7/173
    • H04N21/2187G06Q10/00G09B5/06G09B5/065H04N7/15H04N21/4788
    • An end-to-end lecture broadcast system (LBS) is described. The LBS system typically comprises three modules: a schedule module, a capture module and a transmission module. The schedule module is comprised of a scheduler that is implemented as a software add-on on the lecture host's computing device, a schedule server, and a schedule agent component in the uploading peer to provide for channel based management. The capture module is comprised of a video camera for capturing video content, one or more microphones for capturing audio content, and a VGA signal capture for capturing presentation materials. The transmission module is comprised of an uploading peer and a web server. The uploading peer is responsible for transmitting video/audio content to the Internet/intranet using peer-to-peer (P2P) streaming technology. The web server is responsible for the delivery of captured presentation materials and for ensuring the synchronous play back of video/audio content and presentation materials.
    • 描述了端到端讲座广播系统(LBS)。 LBS系统通常包括三个模块:调度模块,捕获模块和传输模块。 该调度模块包括一个调度器,该调度程序被实现为演讲主机的计算设备上的软件附件,调度服务器和上传对等体中的调度代理组件,以提供基于频道的管理。 捕获模块包括用于捕获视频内容的摄像机,用于捕获音频内容的一个或多个麦克风,以及用于捕获演示材料的VGA信号捕获。 传输模块由上传对等体和Web服务器组成。 上传对等体负责使用点对点(P2P)流技术将视频/音频内容传输到互联网/内部网。 Web服务器负责传送捕获的演示资料,并确保视频/音频内容和演示资料的同步播放。
    • 8. 发明授权
    • Network address translators (NAT) type detection techniques
    • 网络地址转换器(NAT)类型检测技术
    • US09160794B2
    • 2015-10-13
    • US12328296
    • 2008-12-04
    • Qingwei LinJiang LiJian-guang LouYusuo HuFan Li
    • Qingwei LinJiang LiJian-guang LouYusuo HuFan Li
    • G06F15/16H04L29/08H04L12/26H04L29/12H04L12/24H04L29/06
    • H04L67/104H04L29/12339H04L41/12H04L43/50H04L61/2503H04L69/28
    • Techniques described herein enable peers to determine each peer's NAT type much more efficiently and quickly than when compared with existing techniques. To do so, a peer simultaneously sends multiple test messages to a server. The peer then waits to either receive a response for each of the multiple test messages or may store an indication that no response has been received after a predetermined timeout period. The peer then analyzes the received responses and/or the stored timeout indications to determine the peer's NAT type or to determine that the peer is operating free from concealment by a NAT/firewall device. By simultaneously sending the multiple test messages, the peer may determine the NAT type within a maximum time defined by the predetermined timeout period or a roundtrip time period that is required for communication between the peer and the server. As such, the tools allow for efficient NAT-type detection.
    • 本文描述的技术使得对等体能够比与现有技术相比更有效和快速地确定每个对等体的NAT类型。 为此,对等体同时向服务器发送多个测试消息。 然后,对等体等待接收多个测试消息中的每一个的响应,或者可以存储在预定的超时时段之后没有接收到响应的指示。 对等体然后分析接收到的响应和/或存储的超时指示以确定对等体的NAT类型或者确定对等体正在从NAT /防火墙设备的隐藏中运行。 通过同时发送多个测试消息,对等体可以在由对等体和服务器之间的通信所需的预定超时时间段或往返时间周期限定的最大时间内确定NAT类型。 因此,这些工具允许有效的NAT类型检测。
    • 9. 发明授权
    • Peer-to-peer network address translator (NAT) traversal techniques
    • 对等网络地址转换器(NAT)遍历技术
    • US07962627B2
    • 2011-06-14
    • US12328214
    • 2008-12-04
    • Qingwei LinJiang LiJian-guang LouYusuo HuFan Li
    • Qingwei LinJiang LiJian-guang LouYusuo HuFan Li
    • G06F15/16
    • H04L67/104H04L29/12509H04L29/12528H04L61/2567H04L61/2575H04L61/2589H04L63/029H04L67/1093
    • Techniques described herein perform network address translator (NAT) traversal using a peer of a peer-to-peer architecture in lieu of a server. A first peer maintains a list of public domain peers that are not hidden behind a NAT or a firewall and have previously been connected with the first peer. The first peer distributes the list to other peers via a gossip-based protocol. When a second peer desires to connect with the first peer, the second peer initiates a connection with the first peer and sends a request to a public domain peer of the list, requesting that the public domain peer instruct the first peer to initiate a connection with the second peer. By leveraging a public domain peer to establish a connection between the first and second peers, these techniques lessen the burden on the server of the architecture. Furthermore, because different peers may make requests to different public domain peers, the techniques allow for better scalability of the architecture.
    • 本文描述的技术使用对等体系结构的对等体代替服务器来执行网络地址转换器(NAT)遍历。 第一个对等体维护一个未被隐藏在NAT或防火墙后面并且之前已经与第一个对等体连接的公共域对等体的列表。 第一个对等体通过基于八卦的协议将列表分发给其他对等体。 当第二对等体希望与第一对等体连接时,第二对等体发起与第一对等体的连接,并向列表的公共域对等体发送请求,请求公共域对等体指示第一对等体发起与 第二个同伴 通过利用公共域对等体建立第一和第二对等体之间的连接,这些技术减轻了体系结构的服务器负担。 此外,由于不同的对等体可以向不同的公共域对等体发出请求,所以这些技术允许架构的更好的可扩展性。