| 摘要 |
A registration device includes a processor that writes an ID code to an invalid ID code storage region in 5 accordance with management data, updates the management data after the ID code is safely written, and validates the invalid ID code storage region storing the ID code. After the ID code is written, when an ID code is stored in every one of the ID code storage regions, the processor updates 10 the management data to invalidate the ID code storage region excluding the invalid ID code storage region storing the ID code. Fig.2 11a 16 Memory 18 1st Data Region 3rd Data Region Management Data Storage Region 60 Management Data Storage Region 80 1st ID Code Storage Region 61 1st ID Code Storage Region 81te1 2nd ID Code Storage Region 62 2nd ID Code Storage Region 82 3rd ID Code Storage Region 63 3rd ID Code Storage Region 83 4th ID Code Storage Region 64 :4thID Code Storage Region 84 5th ID Code Storage Region 65 5th ID Code Storage Region 85 1,7 r------------------- j--- 2nd Data Region =Management Data Storage Region 70 1st ID Code Storage Region 71 2nd ID Code Storage Region 72 3rd ID Code Storage Region 73 4th ID Code Storage Region 74 :E DCd Storage Reion 75 Fig.3A Fig.3B Fig.3C 65 F]60 fIDI1 265 ri60 FII 265 F 60 rID1 r10000J F1 0000j F1 1000J E-J - J F-J EID2J E-JF EID2J 64 6 3 64 63 64 6 3 |
