Method and apparatus for editing or mixing compressed pictures

Details Method and apparatus for editing or mixing compressed pictures Method and apparatus for editing or mixing compressed pictures

1998-08-04

2000-07-11

Rao, Andy

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

348416, 348415, 348412, 348413, 348699, 348700, H04N 718

Patent

active

060883960

ABSTRACT:
To facilitate editing of first and second compressed picture data each having been obtained by prediction-coding, the second compressed picture data is modified by decoding a frame of the second compressed picture data at an editing point and re-coding the decoded data such that every frame around the editing point can be decoded after editing. The first compressed picture data and the modified second compressed picture data are linked to complete the editing. To facilitate mixing of a compressed picture data with a non-compressed picture data, the compressed picture data is decoded and added to the non-compressed picture data to obtain a mixed picture data. The mixed picture data is re-coded to be a compressed picture data. In each of the editing and mixing, the re-coding may be performed by using at least one of the motion compensation information, motion vector information and orthogonal transform mode information which can be derived from the compressed picture data during the decoding process.

REFERENCES:
patent: 5293229 (1994-03-01), Iu
patent: 5367341 (1994-11-01), Schnorf
patent: 5563649 (1996-10-01), Gould et al.
patent: 5577190 (1996-11-01), Peters

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