A system and method for generating a non-repudiatable record of a communications data stream is provided, which is applicable to real-time and quasi-real-time data streams. A binary communication data stream is captured and segmented into defined frames. A key frame is generated for each of a number...http://www.google.com.tw/patents/US7752449?utm_source=gb-gplus-share專利 US7752449 - System and method for generating a non-repudiatable record of a data stream
