DEVICE, METHOD FOR DETECTING DATA CORRUPTION, AND DEVICE, METHOD FOR RESTORING DATA

摘要

PPROBLEM TO BE SOLVED: To detect corruption of data regarding a user, without making the responsiveness lowered, and to protect the data. PSOLUTION: A control part decides whether three pieces of data management information agree with each fixed time. Then, the control part decides that "there is no breakdown of data management information" when the three pieces of data management information agree and detects "the breakdown of data management information", when they do not agree. When the corruption of data management information is detected, the broken down data management information is restored by a majority of each piece of data management information. PCOPYRIGHT: (C)2006,JPO&NCIPI