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:
Dec. 04, 2012
Filed:
Mar. 17, 2009
Hitoshi Shiga, Yokohama, JP;
Hidetaka Tsuji, Yokohama, JP;
Hitoshi Shiga, Yokohama, JP;
Hidetaka Tsuji, Yokohama, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A memory system with a semiconductor memory device, in which a physical block of n-bits serves as an erase unit, wherein the address management of the memory device is performed by a logical block with m-bits, 'm' being larger than 'n' and expressed by a power of two, and wherein a n-bit portion continued from the head address in the logical block is defined as a first management unit corresponding to one physical block of the memory device, and a number of the remaining fraction portions each defined as a second management unit are gathered so as to correspond to one physical block of the memory device.