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:
Mar. 15, 2011
Filed:
Nov. 29, 2006
Applicants:
Koichi Chida, Chiba, JP;
Kei Kato, Chiba, JP;
Yuhiko Fujiwara, Chiba, JP;
Inventors:
Assignee:
Oki Electric Industry Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 7/04 (2006.01); G06F 17/30 (2006.01); H04N 7/16 (2006.01);
U.S. Cl.
CPC ...
Abstract
When a user wishes to play purchased content data by a playing terminal, a registration database server authenticates a user ID. Furthermore, when the playing terminal requests a content server to establish communication, the content server authenticates the playing terminal to thereby establish communication only with the playing terminal of which the user ID authentication and terminal authentication are correct. Consequently, the content data is prevented from being copied to another playing terminal which is owned by a third party, and thus the copyright of the content data can be protected.