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:
Jul. 27, 2010
Filed:
Apr. 05, 2007
Koichi Tanaka, Tokyo, JP;
Itaru Kawakami, Kanagawa, JP;
Yoshisuke Kuroda, Tokyo, JP;
Ryuji Ishiguro, Tokyo, JP;
Koichi Tanaka, Tokyo, JP;
Itaru Kawakami, Kanagawa, JP;
Yoshisuke Kuroda, Tokyo, JP;
Ryuji Ishiguro, Tokyo, JP;
Sony Corporation, , JP;
Abstract
A client receives encrypted content from content server. The header of the content includes license-identifying information for identifying a license required to utilize the content. The client requests a license server to transmit the license identified by the license-identifying information. When receiving the request for a license, the license server carries out a charging process before transmitting the license to the client. The client stores the license received from the license server. The stored license serves as a condition for encrypting and playing back the content. As a result, content can be distributed with a high degree of freedom and only an authorized user is capable of utilizing the content.