Television – Bandwidth reduction system – Data rate reduction
Patent
1994-08-22
1996-06-18
Metjahic, Safet
Television
Bandwidth reduction system
Data rate reduction
348701, H04N 726, H04N 744
Patent
active
055283004
ABSTRACT:
An encoding apparatus for coding digital video signals describing a scene having at least one moving object and a stationary background, the digital video signals being represented by a series of video frames, each video frame being divided into a plurality of coding blocks, having a capability of adaptively selecting one of an intra coding technique and a non-intra coding technique to be applied to each coding block, comprises uncovered area detector for, in responsive to a current frame and the previous and next frames thereof in the digital video signals, detecting an uncovered area representing a portion in the current frame, which used to be hidden behind the moving object in the previous frame but becomes visible after a movement of the moving object between the previous and current frames; and coding mode controller for determining, for each of the coding blocks in the current frame, whether the coding block belongs to the uncovered area or not, and applying the intro coding technique to the coding block regardless of the adaptively selected coding mode.
REFERENCES:
patent: 3403226 (1968-09-01), Wintringham
patent: 4689671 (1987-08-01), Ohki et al.
patent: 4802006 (1989-01-01), Iinuma et al.
patent: 4837618 (1989-06-01), Hatori et al.
patent: 4924306 (1990-05-01), van der Meer et al.
patent: 4942465 (1990-07-01), Ohta
patent: 5040060 (1991-08-01), Owada et al.
patent: 5321725 (1994-06-01), Paik et al.
patent: 5387938 (1995-02-01), Fukada et al.
patent: 5398067 (1995-03-01), Sakamota
J. S. Kim et al., "Local Motion-Adaptive Interpolation Technique Based on Block Matching Algorithms", Signal Processing Image Communication, vol. 4, No. 6, pp. 519-528 (Nov. 1992), Amsterdam, NL.
M. Achiha et al., "Motion-Adaptive Enhanced Decoder and Up-Converter for PAL signals", 17th International Television Symposium and Technical Exhibition: Broadcast Sessions, pp. 197-208 (Jun. 1991), Montreux, CH.
Daewoo Electronics Co. Ltd.
Metjahic Safet
LandOfFree
Coding mode control device for digital video signal coding syste does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Coding mode control device for digital video signal coding syste, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Coding mode control device for digital video signal coding syste will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-226345