Patent ID: 8213508
Filing Date: 2012-07-03
Classification: H04N

Abstract:
1. A spatial scalable video encoder for encoding an image block, comprising: a motion compensator for forming a motion compensated full resolution prediction; a subtractor, in signal communication with said motion compensator, for subtracting the motion compensated full resolution prediction from the image block to form a prediction residual; a downsampler, in signal communication with said subtractor, for downsampling the prediction residual to form a low resolution downsampled prediction residual; a transformer/quantizer, in signal communication with said downsampler, for coding the low resolution downsampled prediction residual; an inverse quantizer/inverse transformer, in signal communication with said transformer/quantizer, for inverse quantizing and inverse transforming the coded low resolution downsampled prediction residual to form a coded prediction residual; an upsampler, in signal communication with said inverse quantizer/inverse transformer, for upsampling the coded prediction residual to form a coded upsampled prediction residual; an adder, in signal communication with said upsampler, for adding the upsampled prediction residual to a motion compensated full resolution prediction to form a sum signal; a subtractor, in signal communication with said adder, for subtracting the sum signal from the image block to form a difference signal; and another quantizer/transformer, in signal communication with said subtractor, for forming a full resolution enhancement layer error signal from the difference signal.