Image processing system and memory managing method thereof

Abstract

An image processing system suitable for accessing a main memory includes a cache, an image processing circuit and a memory controller. The memory controller includes a hit calculating circuit, a deciding circuit and a fetching circuit. In response to a data request issued by the image processing circuit for a set of target image data, the hit calculating circuit calculates a hit rate of the set of target image data in the cache. The deciding circuit generates a prefetch decision according to the hit rate to indicate whether to perform a prefetch procedure. The fetching circuit selectively performs the prefetch procedure on the main memory according to the prefetch decision.

Dependencies are inferred from the claim text.