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. 09, 2005
Filed:
Aug. 06, 2001
Applicants:
Hiromasa Takahashi, Takasaki, JP;
Yoshimi Iso, Maebashi, JP;
Satoshi Yamato, Maebashi, JP;
Inventors:
Assignees:
Renesas Technology Corp., Tokyo, JP;
Hitachi ULSI Systems Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C029/00 ;
U.S. Cl.
CPC ...
Abstract
The configuration of a microcomputer to be used as the control device of a medium reading apparatus is such that writing unit by unit into and erasion block by block from a prescribed area, such as a user data storage area, in a nonvolatile memory built into the microcomputer makes possible, if any writing into the user data storage area is needed, for data to be successively written while updating the units, data included in the prescribed area to be erased when all the units have been written into, and the next data to be written into the erased blocks.