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. 11, 2007
Filed:
Nov. 30, 2005
Masanobu Okabe, Kanagawa, JP;
Masafumi Kusakawa, Tokyo, JP;
Kyoji Shibutani, Kanagawa, JP;
Sumio Morioka, Kanagawa, JP;
Asami Yoshida, Kanagawa, JP;
Muneki Shimada, Tokyo, JP;
Shiho Moriai, Kanagawa, JP;
Masanobu Okabe, Kanagawa, JP;
Masafumi Kusakawa, Tokyo, JP;
Kyoji Shibutani, Kanagawa, JP;
Sumio Morioka, Kanagawa, JP;
Asami Yoshida, Kanagawa, JP;
Muneki Shimada, Tokyo, JP;
Shiho Moriai, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Sony Computer Entertainment Inc., Tokyo, JP;
Abstract
A data processing apparatus that tests whether a secure circuit is normal or not while maintaining confidentiality of the secured circuit is provided: wherein the secured circuit conducts a self-diagnostic test thereof in accordance with a self-diagnostic test start instruction signal from a CPU, and the secured circuit outputs a self-diagnostic test result signal indicating whether the secured circuit is normal or not to the CPU.