发明授权
US07006631B1 Method and system for embedding binary data sequences into video bitstreams
有权
将二进制数据序列嵌入到视频比特流中的方法和系统
- 专利标题： Method and system for embedding binary data sequences into video bitstreams
- 专利标题（中）： 将二进制数据序列嵌入到视频比特流中的方法和系统
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申请号： US09614371申请日： 2000-07-12
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公开(公告)号： US07006631B1公开(公告)日： 2006-02-28
- 发明人: Maximilian Luttrell , Jiangtao Wen
- 申请人： Maximilian Luttrell , Jiangtao Wen
- 申请人地址： US CA San Diego
- 专利权人： Packet Video Corporation
- 当前专利权人： Packet Video Corporation
- 当前专利权人地址： US CA San Diego
- 代理机构： Patents&TMS, P.C.
- 主分类号： H04N7/16
- IPC分类号： H04N7/16
摘要：
The present invention is a method and system which extracts, manipulates and embeds data from a compressed and standard compliant video bitstream which may be used for digital rights management, e.g. controlling access to a bitstream or for authenticating a video bitstream.The method embeds binary data bits into compressed and standard compliant video bitstream with minimal visual artifacts. The method first parses the compressed video bitstream and locates coded blocks. The codeword C for the last triplet in the original block(RUNc,LEVELc, LASTc=1) is replaced by the VLC code word C′ for the last triplet (RUNC,LEVELC, LASTC′=0). A codeword corresponding to a triplet with LAST=1 is placed after C′ whose sign bit “s” can be either 0 or 1 and is an embedded data bit, and can be used for authentication.
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