| 摘要 |
PURPOSE:To utilize memory area of an EEPROM or the like effectively by recording data, stored in a preceding data area, while rearranging into a square matrix and additionally providing each row and column of the data with one check bit. CONSTITUTION:(m) data of X1.1, X1.2, ... X1.m, X2.1, X2.2, ... X2.m, ... Xm.1, Xm.2, >=Xm.m are written in column direction for each row of a data area 15. A check bit area 16 is provided for each row and column wherein respective rows are additionally provided with check bits X1.m+1, X2.m+1, ... Xm.m+1 while respective columns are additionally provided with check bits Xm+1.1, Xm+1.2, Xm+1.m, Xm+1.m, Xm+1.m+1. In other words, data are rearranged into a square matrix. |
