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:
Nov. 16, 2010
Filed:
Jul. 21, 2003
Information processing apparatus, information processing method, and computer program used therewith
Applicants:
Shinobu Kuriya, Kanagawa, JP;
Yoshimichi Kitaya, Kanagawa, JP;
Inventors:
Shinobu Kuriya, Kanagawa, JP;
Yoshimichi Kitaya, Kanagawa, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G06F 21/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Service data or usage right information, used as purchased content or license information, is set so as to be re-acquired on condition that an acquirer is an authorized content-purchasing client. A leaf ID as a client identifier in an enabling-key-block distribution tree, and a restoring-processing requesting file including verification data for the leaf ID are used as client identifying data, whereby it is ensured that an authorized content-purchasing client is verified.