Television – Bandwidth reduction system – Data rate reduction
Patent
1995-10-13
1997-12-16
Chin, Tommy P.
Television
Bandwidth reduction system
Data rate reduction
348699, H04N 724
Patent
active
056991207
ABSTRACT:
A digital picture manipulator processes a video image signal according to a transform function and outputs both a transformed vide image signal and a transform function information signal. A compressed video encoder uses the transform function information signal in simplifying its search algorithms to generate motion vectors to compress the transformed video image signal to produce a compressed video image signal which includes the generated motion vectors. The compressed video image signal may be transmitted to a receiver, where it is decoded using the motion vectors and displayed. The compressed video image signal also may be subsequently decoded for processing by a subsequent digital picture manipulator. The motion vectors used by the decoder together with the transform function information signal from the subsequent digital picture manipulator are combined in a buffer/motion estimator to produce a modified transform function information signal for a subsequent compressed video encoder. The subsequent compressed video encoder compresses the transformed video image signal from the subsequent digital picture manipulator as a function of the modified transform information signal to produce a subsequent compressed video image signal.
REFERENCES:
patent: 5068724 (1991-11-01), Krause et al.
patent: 5495244 (1996-02-01), Je-Chang et al.
"Motion Compensated Compression of Computer Animation Frames", Brian K. Guenter, Hee Cheol Yun and Russell M. Mersereau, Computer Graphics Proceedings, Annual Conference Series Aug. 1993, ACM-0-89791-601-8/93/008/0297, pp. 297-304.
"Accelerated MPEG Compression of Dynamic Polygonal Scenes", Dan S. Wallach Sharma Kunapalli and Michael F. Cohen, Computer Graphics Proceedings, Annual Conference Series, Jul. 1994, ACM-0-89791-667-0/94/007/0193, pp. 193-196.
Blackham Raymond C.
Case Shaun T.
Chin Tommy P.
Gray Francis I.
Tektronix Inc.
Tung Bryan S.
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