A novel image memory system is proposd

which permits p×q block access at any location of the image array.The memory system

which is based on the new memory module assignment function and address assignment function

consists of pq memory modules.The address calculating circuit is very simple and consists of three adders and pq 4:1multiplexers

which calculates pq addresses for the pq memory modules in parallel.Only one data routing circuit is needed in the proposed memory system. which routes the data efficiently between the data register and the memory modules both in the write cycle and in the read cycle.Thus

the proposed memory system is more efficient and simple than other memory systems which permit p×q block access.