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. 08, 2011
Filed:
Jun. 08, 2005
Applicants:
Akihiro Kasahara, Sanbu-gun, JP;
Akira Miura, Sagamihara, JP;
Hiroshi Suu, Chigasaki, JP;
Inventors:
Assignee:
Kabushiki Kaisha Toshiba, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H04L 29/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Rental business of content data is adequately performed while preventing a improper use of rights or the like by a user. Rental user key data Kuren-, and rental content key data Kuren-includes management metadata M-Mand M-M', respectively. The management metadata includes data use termination date/time indicating an expiration date or the like.