Patent ID: 8473674

Claim:
An information processing device comprising: a first storage section that includes a plurality of cells to store data; a second storage section that holds refresh intervals and states of implementation of refresh operations for each of the plurality of the cells; and a control section that controls the refresh operation of each of the plurality of cells based on the refresh intervals and the states of implementation of refresh operations held by the second storage section, wherein the second storage section holds, as the state of implementation of refresh operations, a latest refresh time at which a latest refreshing of each of the plurality of cells is performed, the second storage section holds flags indicating whether data is stored for each of the plurality of cells of the first storage section, the control section determines, based on the flags, a cell to which the refresh operation is applied and controls the refresh operation of the determined cell, and the control section makes a determination as to whether data is stored in each of the plurality of cells based on the flags, determines a cell whose calculation result of subtracting the latest refresh time from current time reaches the refresh interval out of the cells that the control section determines store data, and controls so as to carry out the refresh operation of the cell.