Television – Bandwidth reduction system – Data rate reduction
Patent
1994-07-22
1995-03-28
Britton, Howard W.
Television
Bandwidth reduction system
Data rate reduction
348700, H04N 7133
Patent
active
054021855
ABSTRACT:
A motion detector, particularly for use in a television system for transmitting television pictures in a digital form, is adapted to partition each picture into pixel blocks, to subject each pixel block to a modified intraframe transform for determining a first coefficient which corresponds to the basic picture having the lowest horizontal and highest vertical frequency, and to determine a plurality of further coefficients which correspond to basic pictures also having the lowest horizontal frequency, but a vertical frequency which is lower than that for the first coefficient. The motion detector signalizes the presence of motion within a pixel block if the first coefficient has a large absolute value, but if simultaneously none of the further coefficients has a sufficiently large absolute value. If the first coefficient has a sufficiently large absolute value, absence of motion is nevertheless signalized if simultaneously one of the further coefficients also has a sufficiently large absolute value.
REFERENCES:
patent: 4903124 (1990-02-01), Hoshi et al.
patent: 5005076 (1991-04-01), Stroppina et al.
patent: 5089888 (1992-02-01), Zoepski et al.
patent: 5089889 (1992-02-01), Sugiyama
patent: 5168357 (1992-12-01), Kutka
P. H. N. De With, "Motion-Adaptive Intraframe Transform Coding of Video Signals", Philips Journal of Research, vol. 44, No. 3/4, 1989 pp. 345-364.
S. M. C. Borgers et al., "An Experimental Digital VCR With 40 MM Drum, Single Actuator and DCT-Based Bit-Rate Reduction", IEEE Transaction on Consumer Electronics, vol. 34, No. 3, Aug. 1988, pp. 597-605.
W. K. Pratt, "Digital Image Processing", Wiley-Interscience Publication, 1978, pp. 232-278.
De With Peter H. N.
Den Bakker Roeland
Britton Howard W.
Marion Michael E.
U.S. Philips Corporation
LandOfFree
Television system for transmitting digitized television pictures does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Television system for transmitting digitized television pictures, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Television system for transmitting digitized television pictures will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2254394