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. 06, 2005
Filed:
Aug. 27, 2001
Naoki Yada, Sayama, JP;
Eiichi Ishikawa, Higashimurayama, JP;
Mitsuru Hiraki, Kodaira, JP;
Shoji Shukuri, Koganei, JP;
Naoki Yada, Sayama, JP;
Eiichi Ishikawa, Higashimurayama, JP;
Mitsuru Hiraki, Kodaira, JP;
Shoji Shukuri, Koganei, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A data processing system () has an erasable and programmable non-volatile memory () and a central processing unit (). The central processing unit allows only a specified partial storage area (Ba) of the non-volatile memory to be intended for a software ECC process. Since ECC codes are added to the partial storage area alone and an error correction is made thereto to thereby increase the number of rewrite assurances, substantially needless waste of each storage area by ECC codes can be avoided as compared with a configuration in which the ECC codes are added to all the write data without distinction regardless of the storage areas. Further, since software copes with ECC processing, ECC correcting capability matched with a device characteristic of the non-volatile memory can easily be selected.