Patent ID: 9560379
Date: 2017-01-31
CPC Classifications: H04N

Claim:
1. A video encoding method using inter-prediction, comprising: encoding a first picture, wherein the first picture serves as a random access picture and is encoded without referring to a reference picture which has already encoded and then decoded; inter-prediction encoding blocks included in a second picture, which is encoded after the first picture and displayed before the first picture, by using a plurality of reference pictures; generating reference picture information representing the reference pictures used for encoding the second picture among reference pictures including one or more reference pictures encoded before the first picture; and transmitting the encoded first picture and the encoded second pictures and the reference picture information, wherein the one or more reference pictures encoded before the first picture are adaptively deleted from a memory based on whether or not the one or more reference pictures encoded before the first picture are used for encoding the second picture, and when the one or more reference pictures encoded before the first picture are used as the reference pictures for encoding the second picture, the one or more reference pictures encoded before the first picture are deleted from the memory after encoding at least the second picture, and wherein the memory includes a reference picture list the reference picture list