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:
Jun. 04, 2013
Filed:
Jan. 13, 2010
Hideki Matsuyama, Kanagawa, JP;
Hideki Matsuyama, Kanagawa, JP;
Renesas Electronics Corporation, Kawasaki-shi, Kanagawa, JP;
Abstract
A processor system according to an exemplary aspect of the present invention includes a first processor, a second processor, a control unit, a signal line group, and a selection circuit. The control unit switches an operation mode between a lock step mode for the first and second processors to execute the same instruction stream and a free step mode for the first and second processors to execute different instruction streams. The signal line group includes at least one signal line disposed between a first memory circuit included in the first processor and a second memory circuit included in the second processor. The signal line group is capable of transferring a storage state of the first memory circuit to the second memory circuit. The selection circuit is capable of switching a connection destination of the second memory circuit between the second processor and the signal line group.