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:
Apr. 01, 2008
Filed:
Mar. 30, 2001
Haruhiko Kishi, Kanagawa, JP;
Akira Kurihara, Kanagawa, JP;
Haruhiko Kishi, Kanagawa, JP;
Akira Kurihara, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
The present invention is intended to prevent sold digital information from being used in a non-compliant manner. Digital information accumulation capabilityaccumulates digital informationto be sold. License generating capabilitygenerates the usage conditions for digital information. Encryption capabilityencrypts digital information. Digital information key generating capabilitygenerates a cryptographic key for decrypting encrypted digital information. Authentication capabilityauthenticates recording medium with license management capability-loaded in digital information vending apparatus. Licensed digital information writing capabilitywrites encrypted digital information and its usage conditions and cryptographic key onto authenticated recording medium with license management capability-