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:
Nov. 15, 2011
Filed:
Jun. 13, 2008
Makoto Honda, Menlo Park, CA (US);
Makoto Honda, Menlo Park, CA (US);
Toyota Infotechnology Center Co., Ltd., Tokyo, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
A processor operation inspection system includes a processor and an operation inspection circuit that inspects an operation of the processor. When a program under execution changes from one predefined state to another state, the processor outputs a state switching signal indicating a transition of its state, a state signal indicating a current state to the inspection circuit. The inspection circuit includes a state register that stores the state of the processor, a combinational logic circuit that calculates, according to the stored state of the processor and the state switching signal, a new state to be taken by the processor, and a comparison circuit that inspects the operation of the processor by comparing the calculated new state to the state of the processor inputted as the state signal.