Patent ID: 8090494

Claim:
An electronic apparatus provided with (i) a volatile temporary storage memory to store data temporarily, (ii) a process execution portion to execute a predetermined process and write data, which results from the executing, in the temporary storage memory, and (iii) a backup memory to store to hold backup data corresponding to the data written in the temporary storage memory, at least part of the data held in the temporary storage memory being predetermined as storage target data, the electronic apparatus comprising: a backup portion configured to write a copy of the storage target data in the backup memory as the backup data; and a measurement portion configured to measure a non-write time period which is an elapsed time that elapsed since data associated with the storage target data was previously written in the temporary storage memory, the backup portion being further configured to write the copy of the storage target data in the backup memory as the backup data when it is determined that the non-write time period reaches a predetermined threshold value based on a measurement result by the measurement portion.