专利详情

专利名称	Program endpoint time detection apparatus and method, and program information retrieval system
申请号	US201012914346	专利类型	US
公开（公告）号	US9009054(B2)	公开（授权）日	2015.04.14
申请（专利权）人	中国科学院声学研究所	发明（设计）人	Liu Kun;Wu Weiguo;Lu Li;Zhao Qingwei;Yan Yonghong;Suo Hongbin
主分类号	G10L21/00	IPC主分类号	G10L21/00;G10L11/06;G06F17/30
专利有效期	Program endpoint time detection apparatus and method, and program information retrieval system 至Program endpoint time detection apparatus and method, and program information retrieval system	法律状态
说明书摘要	This invention relates to retrieval for multimedia content, and provides a program endpoint time detection apparatus for detecting an endpoint time of a program by performing processing on audio signals of said program, comprising an audio classification unit for classifying said audio signals into a speech signal portion and a non-speech signal portion; a keyword retrieval unit for retrieving, as a candidate endpoint keyword, an endpoint keyword indicating start or end of the program from said speech signal portion; a content analysis unit for performing content analysis on context of the candidate endpoint keyword retrieved by the keyword retrieval unit to determine whether the candidate endpoint keyword is a valid endpoint keyword; and a program endpoint time determination unit for performing statistics analysis based on the retrieval result of said keyword retrieval unit and the determination result of said content analysis unit, and determining the endpoint time of the program. In addition, this invention also provides a program information retrieval system. With present invention, program information regarding a program attended by user can be rapidly obtained.