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    • 72. 发明授权
    • System and method for efficiently transferring media across firewalls
    • 跨防火墙有效传输媒体的系统和方法
    • US07574736B2
    • 2009-08-11
    • US10792349
    • 2004-03-03
    • Rao SalapakaSrikanth ShoroffGur Kimchi
    • Rao SalapakaSrikanth ShoroffGur Kimchi
    • G06F17/00
    • H04L63/126H04L63/0209H04L63/029
    • Enabling media (audio/video) scenarios across firewalls typically requires opening up multiple UDP ports in an external firewall. This is so because RTP (Real Time Protocol, RFC 1889), which is the protocol used to carry media packets over IP network, requires a separate UDP receive port for each media source. Opening up multiple media ports on the external firewall is something that administrators are not comfortable doing as they consider it security vulnerability. The system and method according to the invention provides an alternate mechanism which changes RTP protocol a little and achieves a goal of traversing firewalls for media packets using a fixed number, namely two, of UDP ports.
    • 跨防火墙启用媒体(音频/视频)场景通常需要在外部防火墙中打开多个UDP端口。 这是因为RTP(实时协议,RFC 1889)是用于通过IP网络传送媒体包的协议,需要为每个媒体源单独的UDP接收端口。 在外部防火墙上打开多个媒体端口是管理员不舒服的做法,因为他们认为安全漏洞。 根据本发明的系统和方法提供了一种改变RTP协议的替代机制,并且实现了使用固定数量(即两个UDP端口)的媒体分组遍历防火墙的目标。
    • 80. 发明授权
    • Providing routes through information collection and retrieval
    • 通过信息收集和检索提供路线
    • US08954266B2
    • 2015-02-10
    • US13171393
    • 2011-06-28
    • Eyal OfekJeffrey CouckuytGur KimchiBrian Beckman
    • Eyal OfekJeffrey CouckuytGur KimchiBrian Beckman
    • G01C21/00G01C21/34
    • G01C21/3446G01C21/3484G01C21/3492
    • Providing directions from point A to point B may be treated as an information retrieval problem. In one example, actual routes that are traveled by people are received, and are stored in a database. When a person requests directions from point A to point B, a system searches the database to determine whether a route from A to B exists. If the route does exist, then the route may be provided as directions in response to the request. If no such route exists, then the system looks in the database for routes that have some amount of overlap with each other, and attempts to construct a route from A to B by joining known routes that overlap with each other. Rules may govern the degree of overlap that routes are to have before they can be joined.
    • 提供从点A到点B的指示可以被视为信息检索问题。 在一个示例中,接收到由人行进的实际路由,并将其存储在数据库中。 当一个人请求从点A到点B的指示时,系统搜索数据库以确定是否存在从A到B的路由。 如果路由确实存在,则可以根据请求将路由提供为方向。 如果不存在这样的路由,则系统在数据库中查找具有一定数量的重叠的路由,并尝试通过加入彼此重叠的已知路由来构建从A到B的路由。 规则可以管理路由在加入之前拥有的重叠程度。