Image analysis – Image compression or coding – Interframe coding
Reexamination Certificate
2005-01-11
2005-01-11
Chang, Jon (Department: 2623)
Image analysis
Image compression or coding
Interframe coding
C382S238000, C382S239000, C348S589000, C348S598000
Reexamination Certificate
active
06842539
ABSTRACT:
The invention relates to a method of modifying data in an encoded data signal125corresponding to successive pictures divided into sub-pictures, for providing an output modified data signal126. In particular, this invention can be used for the insertion of an additional data signal127into a compressed video signal125. 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-step205, taking advantage of simplifications and combinations between different sub-steps.
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Kiya et al. “A Method of Inserting Binary Data into MPEG Bitstreams.” Proc. Int. Symp. on Circuits and Systems, vol. 4, Jul. 1999, pp. 471-474.
Chang Jon
Koninklijke Philips Electronics , N.V.
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