Patent ID: 8064282

Claim:
A method of accessing a dynamic random access memory having memory cells arranged in an address space defined by row addresses and column addresses, the method comprising: setting an access area within the address space for storing data, which constitutes one of successive frames of a moving image supplied within a frame period, by arranging two or more complete columns of blocks along a direction of the column addresses, wherein: each of the blocks includes a plurality of the memory cells positioned at a same row address and a specified number of consecutive column addresses, and each of the complete columns of blocks includes a first number of the blocks arranged in an entirety of a specified range of row addresses; and successively accessing the two or more complete columns of blocks within the frame period by successively accessing the blocks arranged in each of the complete columns of blocks, wherein: the memory is a synchronous random access memory, the memory cells are required to be refreshed within a refresh period, and accessing one of the blocks positioned at each of the row addresses refreshes the memory cells included in other ones of the blocks positioned at the same row address.