Patent ID: 9525889
Filing Date: 2016-12-20
CPC Classification: H04N

Claim Text:
1. A method of decoding a video, the method comprising: determining bit depth of samples in a video sequence; obtaining quantized transform coefficients of a transform block in the video sequence from a bitstream; generating scaled transform coefficients of the transform block by performing inverse-quantization and scaling on the quantized transform coefficients; generating intermediate sample values of the transform block by performing vertical inverse-transformation on the scaled transform coefficients; and generating residual values of the transform block by performing horizontal inverse-transformation on the intermediate sample values of the transform block; generating a prediction block by performing intra prediction or inter prediction; and, restoring sample values using the residual values of the transform block and the prediction block, wherein the scaling on the quantized transform coefficients comprises: wherein the scaling variable is generated by using a size of the transform block and the bit depth of samples.