发明名称 Subliminally embedded keys in video for synchronization
摘要 A data file containing metadata and/or control data is synchronized with associated audio/video data by subliminally embedding a key in a frame of the audio/video. The key indicates the location of the data file and a time after the embedded frame in which the data file is to be activated to be in synchronism with the audio/video. The data file is accessed via an alternate channel and held in a buffer until the time indicated by the key. The metadata from the data file is played out for display in synchronism with the associated audio/video data, and instructions contained in the control data are executed in synchronism with the associated audio/video data.
申请公布号 US6642966(B1) 申请公布日期 2003.11.04
申请号 US20000707520 申请日期 2000.11.06
申请人 TEKTRONIX, INC. 发明人 LIMAYE AJIT M.
分类号 H04N5/93;H04N7/08;H04N7/081;H04N7/24;(IPC1-7):H04N7/08 主分类号 H04N5/93
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