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:
Jul. 12, 2022
Filed:
Apr. 25, 2017
Applicant:
Hitachi, Ltd., Tokyo, JP;
Inventors:
Teruaki Sakata, Tokyo, JP;
Teppei Hirotsu, Tokyo, JP;
Assignee:
HITACHI, LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 11/20 (2006.01); G06F 11/16 (2006.01);
U.S. Cl.
CPC ...
G06F 11/2028 (2013.01); G06F 11/2025 (2013.01); G06F 11/2035 (2013.01); G06F 11/1629 (2013.01); G06F 2201/845 (2013.01); G06F 2201/85 (2013.01);
Abstract
In the invention, a problem is solved in which, in order to achieve high performance and high reliability with the conventional multi-core and lockstep core, a redundant lockstep core is necessarily prepared to execute a multi-core program in which an error has occurred, a circuit area increases, and a cost and a power consumption increase. In the invention, a safe operation of a control system is secured by operating a software program operating on a multi-core in which an error has occurred as degenerate software on a core switched from a lockstep operation to a multi-core operation.