| 摘要 |
PROBLEM TO BE SOLVED: To provide a memory controller and a controlling method thereof which efficiently can form images, without increasing the load on a compression operation in the entire digital combined machine. SOLUTION: Each time a transmitting direct memory access controller(DMAC) 301 transmits image data to a compression processor 302, a transmitting counter 304 counts the transmitted data quantity as a transmit count. Each time a receiving DMAC 303 receives image data from the compressor 302, a receiving counter 305 counts the received data quantity as a receive count. A comparator 306 compares the transmit and receive counts to control so as to interrupt the transmitting DMAC 301, the compression processor 302 and the receiving DMAC 303 according to the comparison result. This eliminates the need of a process time extra for compression, if image data not compressed are judged to be stored. |
