Simplicity HDTV video decoder and its decoding method
AssigneeLG Electronics Inc.
InventorDong Ho Lee
Life of this patent
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Abstract
A simplicity HDTV video decoding method includes the steps of: variable-length-decoding an input image signal, and dividing it into a luminance signal, a color difference signal and a motion vector; reverse-quantizing each of the luminance and color difference signals received, and reverse-converting it to be half in horizontal size; and storing each of the reverse-converted luminance and color difference signals in the unit of frames, and motion-compensating it by using the motion vector, thus reducing the memory and other logic circuits in half by motion-compensating each of the luminance and color difference signals, generated in parallel by an 8×4 IDCT.
Claims7
A simplicity HDTV video decoding decoder comprising:
- a variable length decoder unit for variable-length-decoding an input image signal and dividing the input image signal into a plurality of signals and a motion vector;
- a reverse quantization unit for reverse-quantizing one of the plurality of signals and outputting a reverse quantized coefficient;
- an 8×4 IDCT unit for reverse converting the reverse quantized coefficient and outputting a differential value;
- a motion compensation unit for motion compensating the motion vector and outputting a compensated frame;
- and
- an adding unit for combining the differential value and the compensated frame.
A simplicity HDTV video decoding method comprising the steps of:
- variable-length-decoding an input image signal, and dividing it into a luminance signal, a color difference signal and a motion vector;
- reverse-quantizing the luminance and color difference signals received, and reverse-converting the luminance and color difference signals received to be half in horizontal size;
- and
- storing of the reverse-converted luminance and color difference signals in the unit of frames, and motion-compensating the reverse-converted luminance and color difference signals by using the motion vector.
Dependencies are inferred from the claim text.