Provided is an apparatus for decoding a moving picture. When the current block is coded in intra prediction and a size of the transform block is larger than a predetermined size, a plurality of sub-blocks are restored by applying a first scan pattern determined according to the intra prediction mode of the current block on the quantization coefficient sequence, and the quantized transform block is restored by applying a second scan pattern determined according to the intra prediction mode of the current block on the plurality of sub-blocks. The first scan pattern for restoring the plurality of sub-blocks from the quantization coefficient sequence is the same as the second scan pattern for restoring the quantized transform block from the plurality of sub-blocks.