Patent ID: 9451285
Filing Date: 2016-09-20
CPC Classification: H04N

Claim Text:
1. A video decoding method using inter-prediction, comprising: decoding a first picture, wherein the first picture serves as a random access picture and is decoded without referring to a reference picture which has already decoded; and decoding blocks, by using an inter-prediction, included in a second picture, which is decoded after the first picture and displayed before the first picture, by using a plurality of reference pictures, wherein the decoding of the blocks included in the second picture is performed based on reference picture information included in a bitstream, the reference picture information representing the reference pictures used for decoding the second picture among reference pictures including one or more reference pictures decoded before the first picture, wherein, the one or more reference pictures decoded before the first picture are adaptively deleted from a memory based on the reference picture information, when the reference picture information represents that the one or more reference pictures decoded before the first picture are used for decoding the second picture, the one or more reference pictures decoded before the first picture are deleted from the memory after decoding at least the second picture, and wherein the memory includes a reference picture list the reference picture list