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:
Sep. 07, 2010
Filed:
Nov. 24, 2005
Masaaki Harada, Hyogo, JP;
Tsutomu Sekibe, Hyogo, JP;
Masaaki Harada, Hyogo, JP;
Tsutomu Sekibe, Hyogo, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A processor () manages, in an instruction management unit () and a data attribute management unit (), secure attributes indicating whether instruction code and data stored in an instruction cache () and a data cache () of the processor () are confidential information. When the instruction code and the data are confidential information, the processor () also manages secure processing identification information for indicating in which secure process the confidential information is to be used. When the operating mode is switched from the secure mode to the normal mode, only the confidential information is disabled by a memory disabling unit (). This prevents confidential information from being analyzed by the processor in the normal mode.