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公开(公告)号：EP0842587B1
公开(公告)日：2002-08-07
申请号：EP97920916.0
申请日：1997-05-28
IPC分类号： H04N7/52
CPC分类号： H04N21/235 , H04N21/2365 , H04N21/4347 , H04N21/435
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公开(公告)号：EP1172009A1
公开(公告)日：2002-01-16
申请号：EP01907412.9
申请日：2001-01-05
发明人： LE MAGUET, Yann
IPC分类号： H04N7/26
CPC分类号： H04N19/40 , H04N19/467 , H04N19/48 , H04N19/90 , H04N21/23892 , H04N21/8358
摘要： The invention relates to a method of modifying data in an encoded data signal (128) corresponding to successive pictures divided into sub-pictures, for providing an output modified data signal (129). In particular, this invention can be used for the insertion of an additional data signal (130) into a compressed video data signal (128). The proposed arrangements/diagrams according to the invention are based on a transcoder arrangement including at least partial decoding means and partial re-encoding means. This method leads to a cost-effective solution compared with the prior art comprising a minimum number of functional DCT/IDCT sub-steps, taking advantage of simplifications and combinations between different sub-steps. Use Data insertion into an encoded video signal.
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3.发明授权
公开(公告)号：EP1425923B1
公开(公告)日：2005-04-20
申请号：EP02755561.4
申请日：2002-08-21
发明人： LE MAGUET, Yann
CPC分类号： H04N19/467 , H04N21/234318 , H04N21/235 , H04N21/435 , H04N21/8126
摘要： The invention relates to a method and device for sending a user data from a video encoder to a video decoder, the user data being inserted in the coded video signal generated by said video encoder. The method is characterized in that it comprises at the encoder end :- an insertion step (202) of inserting a set of stuffing packets at a given position in said coded video signal, the number of stuffing packets in said set being determined via a look-up table from said user data (201),and at the decoder end :- an analysis step (204) of detecting and counting the number of stuffing packets at said given position in said coded video signal, said number of stuffing packets being used for deriving said user data via said look-up table (205).
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4.发明公开
公开(公告)号：EP1425923A1
公开(公告)日：2004-06-09
申请号：EP02755561.4
申请日：2002-08-21
发明人： LE MAGUET, Yann
CPC分类号： H04N19/467 , H04N21/234318 , H04N21/235 , H04N21/435 , H04N21/8126
摘要： The invention relates to a method and device for sending a user data from a video encoder to a video decoder, the user data being inserted in the coded video signal generated by said video encoder. The method is characterized in that it comprises at the encoder end :- an insertion step (202) of inserting a set of stuffing packets at a given position in said coded video signal, the number of stuffing packets in said set being determined via a look-up table from said user data (201),and at the decoder end :- an analysis step (204) of detecting and counting the number of stuffing packets at said given position in said coded video signal, said number of stuffing packets being used for deriving said user data via said look-up table (205).
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公开(公告)号：EP1172007A1
公开(公告)日：2002-01-16
申请号：EP01900132.0
申请日：2001-01-05
发明人： LE MAGUET, Yann
IPC分类号： H04N7/26
CPC分类号： H04N19/40 , H04N19/467 , H04N19/48 , H04N19/90 , H04N21/23892 , H04N21/8358
摘要： The invention relates to a method of modifying data in an encoded data signal (125) corresponding to successive pictures divided into sub-pictures, for providing an output modified data signal (126). In particular, this invention can be used for the insertion of an additional data signal (127) into a compressed video signal (125). The proposed schemes according to the invention are based on a transcoder arrangement including at least partial decoding means and partial re-encoding means. This method leads to a cost-effective solution compared to the prior art comprising a minimum number of functional sub-steps, in particular including a unique motion compensation sub-step (205), taking advantage of simplifications and combinations between different sub-steps. Use: Data insertion into an encoded video signal.
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公开(公告)号：EP1149494A1
公开(公告)日：2001-10-31
申请号：EP00984968.8
申请日：2000-11-02
发明人： LE MAGUET, Yann
CPC分类号： H04N19/40 , H04N21/23424 , H04N21/2343 , H04N21/44016
摘要： A switching device SW allows to switch from a first compressed data input stream IS1 to a second compressed data input stream IS2, resulting in a compressed data output stream OS. This switching device comprises a buffer system BS intended to store the data contained in the first and second input streams, and control means CONT which controls the storage of the input streams in the buffer system in order to switch, at a switch request SWR, from the first input stream to the second input stream, using a commutation device COM. A transcoding system TS is intended to receive the data stream at the output of the commutation device and to provide the output stream in a seamless way. The use of a transcoding system allows to avoid an underflow or an overflow of the buffer of the decoder that will have to decode the output stream. Moreover, said transcoding system allows to encode the output stream at a bit rate R, where R may be different from the bit rate R1 of the first input stream and the bit rate R2 of the second input stream.
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