Patent ID: 9467711
Filing Date: 2016-10-11
CPC Classification: H04N

Claim Text:
1. A method of decoding an encoded video comprising: determining at least one coding unit by using split information extracted from bitstream; extracting from the bitstream transformation index information indicating whether a transformation unit of a current level included in a coding unit among the at least one coding unit is split; when the transformation index information indicates a split of the transformation unit of the current level, splitting the transformation unit of the current level into transformation units of a lower level; and when the transformation index information indicates a non-split of the transformation unit of the current level, obtaining pattern information for the transformation unit of the current level, wherein the pattern information indicates whether the transformation unit of the current level contains one or more transform coefficient not equal to 0, wherein the transformation unit of the current level is split into four transformation units of the lower level.