Television – Bandwidth reduction system – Data rate reduction
Patent
1993-04-13
1994-10-04
Britton, Howard W.
Television
Bandwidth reduction system
Data rate reduction
364725, H04N 7133
Patent
active
053530608
ABSTRACT:
A video signal processing system includes encoder apparatus applying a Discrete Cosine Transform (DCT) to N.times.N (e.g., 8.times.8) image data blocks. Resulting DCT coefficients are further transformed by multiplying them with a special transform matrix of predominantly zero values. A comparator determines whether the original DCT coefficients or the further transformed DCT coefficients will be coded for data compression, with respect to static or dynamic image content. Complementary transformation is performed at a decoder.
REFERENCES:
patent: 3940554 (1976-02-01), Masuda
patent: 4807053 (1989-02-01), Heijnemans
patent: 4814871 (1989-03-01), Keesen
Motion-Adaptive Intraframe Traansform Coding of Video Signals by P. H. N. DeWith, Philips Research Laboratories, The Netherlands.
Universal Coding of Transform Coefficients for Video Codecs, Proceedings of EUSIPCO-88, Grenoble, France, Sep. 1988.
Keesen Heinz W.
Peters Edgar
Britton Howard W.
Deutsche Thomson-Brandt GmbH
Herrmann Eric P.
Kurdyla Ronald H.
Tripoli Joseph S.
LandOfFree
Process and device for the transformation of image data does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process and device for the transformation of image data, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process and device for the transformation of image data will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-584628