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:
Aug. 07, 2012
Filed:
Oct. 07, 2009
Takuma Mitsunaga, Tokyo, JP;
Takuma Tominaga, Tokyo, JP;
Hiroyuki Ohba, Tokyo, JP;
Kenzo Kita, Tokyo, JP;
Takuma Mitsunaga, Tokyo, JP;
Takuma Tominaga, Tokyo, JP;
Hiroyuki Ohba, Tokyo, JP;
Kenzo Kita, Tokyo, JP;
TDK Corporation, Tokyo, JP;
Abstract
The memory controller forms temporary virtual blocks each composed of a plurality of physical blocks, whose physical addresses are the same value, each of which is included in each of flash memories, extracts temporary virtual block to which at least one defective block belongs from the temporary virtual blocks, generates a second temporary virtual block to which a defective block does not belong by replacing a defective block belonging to one temporary virtual block with a normal block belonging to another temporary virtual block among temporary virtual blocks extracted, and allocates temporary virtual blocks not extracted and second temporary virtual blocks generated to available virtual blocks.