| 摘要 |
<p>PROBLEM TO BE SOLVED: To accelerate the software moving picture experts group MPEG video expansion processing by reducing the occurrence of data cache mistakes in the motion compensation processing on a conventional processor that is provided with a preload device of data to a data cache. SOLUTION: After expanding a motion vector 48 of a macro block by a computing device, an address of an area 46 adjacent to the right of a reference area 45 pointed out by the motion vector 48 is given to a data cache controller, and a preload instruction is issued to preload data in this area from a main storage to the data cache. When a succeeding adjacent macro block is expanded, a probability of the preloaded area to be hit as reference area is high, and data access to the reference area 45 is hit to the data cache with high probability, so that the motion compensation processing is conducted at high speed.</p> |
