US Patent 8000927 Data remaining period management device and method

A remaining period management device according to an example of the invention includes a statistic calculation unit that measures sampling data associated with monitoring target data stored in a storage device having a finite data remaining period and calculates sampling statistical data based on a measurement result of the sampling data. The device also includes a remaining period detection unit that obtains remaining period data indicative of a data remaining period of the monitoring target data based on predetermined remaining period characteristic data indicative of a characteristic that statistical data varies with elapse of data remaining period and the sampling statistical data calculated by the statistic calculation unit.