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:
Oct. 13, 2015
Filed:
Mar. 11, 2010
Hiroshi Yamada, Chiyoda-ku, JP;
Yasuharu Itano, Chiyoda-ku, JP;
Etsuji Matsuyama, Chiyoda-ku, JP;
MITSUBISHI ELECTRIC CORPORATION, Chiyoda-Ku, Tokyo, JP;
Abstract
In a memory diagnostic method, a fixed domain stores data that are not changed during process execution. A variable domain stores data that are subject to writing during process execution. A fixed domain diagnostic part adds an error-detecting code to data to be stored in the fixed domain. The fixed domain diagnostic part compares an error-detecting code calculated from data read from the fixed domain with the added error-detecting code to determine whether there is any data error. A variable domain diagnostic part temporarily stores data stored in the variable domain in a memory region different from the memory storing the data, and writes known data in the variable domain where the temporarily stored data were stored. The variable domain diagnostic part reads data from the region where the known data were written and determines whether the data is the same as the written known data.