Memory storage and a memory storage control method

Title:

Memory storage and a memory storage control method

Document Type and Number:

Japanese Patent JP5956675

Kind Code:

B2

Abstract:

The degree of deterioration of each physical storage area in a non-volatile memory is evaluated without interrupted operation of a storage device. The storage device includes a non-volatile memory configured to include a plurality of physical storage areas and a controller. The controller calculates the degree of deterioration of each of a plurality of specific physical storage areas by performing an evaluation process of evaluating the plurality of specific physical storage areas part by part over all of the plurality of specific physical storage areas and determines whether to use the corresponding physical storage areas based on the calculated degree of deterioration. In the evaluation process, the controller selects a part of the plurality of specific physical storage areas writes predetermined evaluation data on the physical storage area group, reads the evaluation data and calculates the degree of deterioration based on the read evaluation data.

Inventors:

Suzuki Ashi
Atsushi Kawamura

Application Number:

JP2015506418A

Publication Date:

July 27, 2016

Filing Date:

March 19, 2013

Export Citation:

Click for automatic bibliography generation Help