| 摘要 |
A system (10) which encodes and decodes video signals in accordance with a compression standard, such as H.263, efficiently stores and retrieves motion vectors associated with the signals. An encoder (16) and a decoder (22) each use a motion vector storage and retrieval circuit (38, 72) which addresses a respective SRAM array (52, 52'). Advanced Prediction Mode for a video signal is implemented by storing only a minimum number of motion vectors by eliminating storage of motion vectors which are not needed for a real-time current calculation. Storage of selected top motion vectors associated with predetermined macroblocks of video information is avoided to gain a memory savings. |
