INFORMATION/DATA PROCESSOR FURNISHED WITH CACHE FUNCTION, INFORMATION/DATA PROCESSING METHOD, COMPUTER- READABLE RECORDING MEDIUM, INTEGRAL CIRCUIT DEVICE OF SYSTEM-ON-CHIP TYPE, VIDEO DATA EDITING DEVICE, VIDEO-ON- DEMAND SERVER AND NETWORK GAME SERVER

摘要

PROBLEM TO BE SOLVED: To provide a highly efficient and reliable information data processor furnished with cache function and free from the mixture of old data into new data and information data processing method. SOLUTION: When the recording/reproducing to/from a low speed main recorder Dk is carried out through a buffer memory, the device functions as the cache memory Cch by constituting of a high speed memory. When recording demands cmdj generated from input/output device Aioj (j=1, 2, 3, 4) are the updated recording and old data exist on the cache memory Cch and also the old data are in the process of being read to other input/output devices Aiok, the cache region is newly secured to write the updated recording data for making the new data to record them to the main recorder Dk. The old regions wherein the old data are recorded, are released at the completion of the reading out work, as invalid after that.