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. 30, 2005
Filed:
May. 12, 2003
Rikard Johansson, Linköping, SE;
Rikard Johansson, Linköping, SE;
Other;
Abstract
A computer system and method are provided for executing multiple software of different mission-criticality. The computer system includes at least one access control circuit to prevent access to memory assigned to software of greater mission-criticality by software of lesser mission-criticality. The access control circuit is configured to be in a first position allowing access to a first memory for purposes of data retrieval and storage when the greater mission-critical software is executing and in a second position when a lesser mission-critical software is executing, allowing access to a second memory but preventing access to the first memory. The greater mission-critical software is configured to provide control signals to the access control circuit instructing the access control circuit to maneuver to the second position, when necessary, by generating an interrupt.