Patent ID: 7346111

Claim:
A method for processing a video bitstream, comprising the steps of: (A) determining co-located motion information of a plurality of co-located sub-blocks in a co-located macroblock of said video bitstream; (B) storing said co-located motion information of (i) at least a first three of said co-located sub-blocks along a left side of said co-located macroblock, (ii) at least a second three of said co-located sub-blocks along a right side of said co-located macroblock and (iii) less than all of said co-located sub-blocks; (C) inferring current motion information of a current macroblock co-located in a different picture from said co-located macroblock using said co-located motion information that was stored, wherein said current motion information is inferred without measuring an inter-picture difference; and (D) generating a processed signal by one of (i) compressing said video bitstream using said current motion information and (ii) decompressing said video bitstream using said current motion information.