Television – Bandwidth reduction system – Data rate reduction
Patent
1992-10-23
1995-03-28
Chin, Tommy P.
Television
Bandwidth reduction system
Data rate reduction
348384, 348390, 348405, H04N 712, H04N 1102
Patent
active
054021464
ABSTRACT:
Systems and methods that enable digital video compression techniques to manage and control artifact presence in each compressed frame of the video clip. Wherein specific embodiments are applicable to interframe and intraframe video compression methods and can be used in the compression of digital images and digital video clips. Other embodiments are employable in digital video compression and are applicable to interframe compression methods. A mechanism to increase the amount of video compression, while maintaining video quality that may otherwise be sacrificed with such increases in video compression, by threshold value management to accommodate the human eye's ability to more readily discern local image features or artifacts at central image locations or focused-upon areas, while tolerating, to a greater extent, artifacts dispersed elsewhere in the image.
REFERENCES:
patent: 4442454 (1984-04-01), Powell
patent: 4703350 (1987-10-01), Hinman
patent: 4849810 (1989-07-01), Ericsson
patent: 5103306 (1992-04-01), Weiman et al.
patent: 5107345 (1992-04-01), Lee
patent: 5150209 (1992-09-01), Baker et al.
Pietras Mark A.
Rodriguez Arturo A.
Saenz Andres J.
Bogdon Bernard D.
Chin Tommy P.
International Business Machines - Corporation
Le Vu
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