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:
Feb. 15, 2011
Filed:
Aug. 27, 2007
Applicants:
Shinobu Kuriya, Chiba, JP;
Akira Kurihara, Kanagawa, JP;
Inventors:
Shinobu Kuriya, Chiba, JP;
Akira Kurihara, Kanagawa, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G06F 21/22 (2006.01); G06F 3/048 (2006.01); G06F 15/16 (2006.01);
U.S. Cl.
CPC ...
Abstract
An authentication function authenticates a PDA. The content database holds the usage conditions of a content and the information about the content. The communication function controls the reception of the usage conditions and the content information, both transmitted from the PDA. The content management function updates the usage conditions and the content information received, on the basis of the usage conditions and the content information held. The desired content is thereby retrieved quickly.