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. 16, 2011
Filed:
May. 09, 2007
Applicant:
Akiyuki Hatakeyama, Tokyo, JP;
Inventor:
Akiyuki Hatakeyama, Tokyo, JP;
Assignee:
Sony Computer Entertainment Inc., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G06F 12/14 (2006.01); G06F 21/00 (2006.01); G06F 21/02 (2006.01); G06F 21/22 (2006.01);
U.S. Cl.
CPC ...
Abstract
Methods and apparatus provide for: entering a secure mode in which a given processor may initiate a transfer of information into or out of said processor, but no external device may initiate a transfer of information into or out of said processor; and programming at least one trusted data storage location using a direct memory access (DMA) command to be one of read-only, write-only, readable and writeable, limited access, and reset, where said at least one trusted data storage location is located external to said processor.