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. 12, 2008
Filed:
May. 19, 2004
Applicants:
Yoshiki Shibata, Chiba, JP;
Kunio Sensui, Chiba, JP;
Kazuhiro Yamamoto, Chiba, JP;
Inventors:
Assignee:
Sharp Kabushiki Kaisha, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 9/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An illegal data use prevention system includes a registrar which issues first authentication information for a game machine reproducing data and second authentication information for a user-identifying IC card. The data is identified by the first authentication information and the second authentication information. The game machine contains the first authentication information and, for example, executes a game program in accordance with a result of determination as to whether the IC card contains the second authentication information. Thus, illegal use of data is effectively prevented.