Television – Bandwidth reduction system – Data rate reduction
Patent
1995-02-23
1997-11-18
Lee, Richard
Television
Bandwidth reduction system
Data rate reduction
348699, H04N 732
Patent
active
056893060
ABSTRACT:
An apparatus for determining a preducted current frame based on a current frame and a previous frames comprises: a unit for selecting a number of pixels from the pixels contained in the previous frame to detect a first set of motion vectors; a unit for producing a second set of motion vectors for all of the pixels contained in the current frame by using first set of motion vectors; a unit for assigning the value of each of the pixels in the previous frame as the value of one of the pixels in the current frame by using the second set of motion vectors, to determine a preliminary preducted current frame; a unit for finding the difference between the current frame and the preliminary preducted current frame to detect collective error regions; a unit for selecting one pixel amount the pixels contained in each of the collective error regions; a unit for detecting a third set of motion vectors for the selected pixels from the collective error regions; a unit for producing a fourth set of motion vectors for all of the pixels contained in the current frame by using the first set of motion vectors and the third set of motion vectors; and a unit for assigning the value of each of the pixels in the previous frame through one of the fourth set of motion vectors, as the value of one of the pixels in the current frame.
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Daewoo Electronics Co. Ltd.
Lee Richard
LandOfFree
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