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:
Sep. 21, 2004
Filed:
Aug. 17, 2000
Applicant:
Inventors:
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 1/300 ; G11C 1/610 ; G11C 1/616 ;
U.S. Cl.
CPC ...
G06F 1/300 ; G11C 1/610 ; G11C 1/616 ;
Abstract
A data processing device includes flash memory; nonvolatile memory having an erasure block buffer in which there are stored data recorded in an erasure-unit region of the flash memory; a write control controller for writing into the erasure block buffer write request data, which are to be written into the flash memory; a save unit for saving non-changing data stored in the flash memory to the erasure block buffer; an erasure instruction unit for instructing erasure of the data from the flash memory; and a write unit for writing the data recorded in the erasure block buffer to the flash memory.