Patent ID: 9609335
Date: 2017-03-28
CPC Classifications: H04N

Claim:
1. A video decoding apparatus for reconstructing residual signals of a current block to be decoded by using a tree structure, the apparatus comprising: a decoder configured to a reconstructor configured to reconstruct information on the residual signals of each of the subblocks from the bitstream, wherein, when a block of a first layer in the tree structure is divided into a plurality of blocks of a second layer which is a lower layer of the first layer, the decoder is configured to decode the partition flag for each of the blocks of the second layer in a predetermined order, the predetermined order being an order of an upper left block, an upper right block, a lower left block and a lower right block, and wherein, when a block among the blocks of the second layer is further divided into a plurality of blocks of a third layer which is a lower layer of the second layer, the decoder is configured to decode the partition flag for each of the blocks of the third layer in the predetermined order, before decoding the partition flag for a next block of the second layer in the predetermined order.