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公开(公告)号:US08141152B1
公开(公告)日:2012-03-20
申请号:US11958729
申请日:2007-12-18
申请人: Lin Yuh-Ing Hwang , Leroy Lacy , Li Ling
发明人: Lin Yuh-Ing Hwang , Leroy Lacy , Li Ling
IPC分类号: G06F11/00
CPC分类号: H04L63/0227 , H04L51/12
摘要: The present invention provides methods, devices, and systems for detecting and filtering SPam over Internet Telephony (SPIT). The invention includes a two level filter. The first level may include a robust audio hash used to filter audio messages based on their audio content and the second level may include a near-duplicate pattern matching algorithm having a number of content filters and an evaluator to aggregate the results from the multiple content filters. By supporting multiple aggregation methods, a more flexible SPIT detection scheme is provided.
摘要翻译: 本发明提供用于检测和过滤因特网电话(SPIT)的垃圾邮件的方法,设备和系统。 本发明包括一个二级过滤器。 第一级可以包括用于基于其音频内容来过滤音频消息的鲁棒音频散列,并且第二级可以包括具有多个内容过滤器的近似重复的模式匹配算法和用于聚合来自多个内容过滤器的结果的评估器 。 通过支持多种聚合方法,提供了更灵活的SPIT检测方案。