Patent ID: 8036271

Claim:
A method for determining a first and a second reference picture of a current block, comprising the steps of: (A) finding in a first list a co-located picture having a co-located block; (B) determining in a second list an inter-reference picture of said co-located block, wherein a unique identifier is associated with said inter-reference picture; (C) mapping in a third list a reference index to a lowest valued reference index associated with said unique identifier, wherein said unique identifier is associated with said inter-reference picture from (i) when said unique identifier is used with said inter-reference picture in said second list for said co-located picture to (ii) when said unique identifier is used with said inter-reference picture made available as a potential reference picture in said third list for said current block; and (D) using (i) said reference index to determine said second reference picture and (ii) said co-located picture as said first reference picture, wherein said first and said second reference pictures are used for inter-prediction of said current block.