| 摘要 |
PROBLEM TO BE SOLVED: To suppress the occurrence of error data by confirming whether transmission data are correctly transmitted or not, reducing the transmission of error data and informing a data storage body of the occurance of an error in transmission data at the occurance of the error. SOLUTION: A reader/writer 31 transmits data obtained by combining a return request signal R and a controlling signal to a data storage body 32. The storage body 32 decodes the data and returns the decoded data to the reader/writer 31 as return data. The reader/writer 31 compares the return data with the transmitted transmission data and always confirms whether correct data are transmitted to the storage body 32 or not, and when a transmission data error exists, a control part 41 stops transmission for a fixed period and informs the storage body 32 of the error. The storage body 32 executes error processing for turning the chip enabled state of a memory to a disernabled state or turning off a power supply switch or the like. |
