发明名称 System and method for synchronizing enhancing content with a video program using closed captioning
摘要 A system and method uses a closed captioning script to synchronize supplemental data with specified junctures in a video program. A parser parses the closed captioning script to identify a set of unique key phrases. A producer associates the supplemental data with the key phrases of the closed captioning script that correspond to the desired points in the program. When the program is played, a viewer computing unit monitors the closed captioning script to detect the key phrases. Upon detection of a particular key phrase, the viewer computing unit retrieves the supplemental data associated with the particular key phrase. The supplemental data is multicast to a multicast address. A listener listens to the multicast address to receive and handle any enhancement action supported by the supplemental data. The listener can be embedded in a container, such as an HTML page or other hypermedia document.
申请公布号 US2004040042(A1) 申请公布日期 2004.02.26
申请号 US20030647549 申请日期 2003.08.25
申请人 FEINLEIB DAVID 发明人 FEINLEIB DAVID
分类号 G06F17/30;H04N5/445;H04N7/088;H04N7/16;H04N7/173;H04N7/52;(IPC1-7):H04N7/173 主分类号 G06F17/30
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