The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 12, 2012
Filed:
Feb. 08, 2010
Naoki Mukaida, Tokyo, JP;
Naoki Mukaida, Tokyo, JP;
TDK Corporation, Tokyo, JP;
Abstract
In the control of the number of program-erase cycles, when assigning a logical block (LB) to a physical block (PB), the number of program-erase cycles of a first PB and that of a second PB are compared, which first PB is a free PB of which the number of program-erase cycles is the smallest among that of free PBs, which second PB is a PB earliest assigned a LB among PBs each assigned a LB. As a result, in a case where the number of program-erase cycles of the first PB is larger by a predetermined value or more than that of the second PB, data stored in the second PB are transferred to a free PB of which the number of program-erase cycles is the largest among free PBs, and then the LB is assigned to the second PB.