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. 28, 2015
Filed:
Nov. 17, 2006
Eiji Kawahara, Hiroshima, JP;
Eiji Kawahara, Hiroshima, JP;
Abstract
A reading unit reads, from a memory card, encrypted license information and license management information corresponding thereto. A decryption unit decrypts the encrypted license information, and thereby obtains license information in plain text. An operation execution executes an operation based on the license information in plain text. The license management information indicates, for each operation for the content, a type of identifier necessary for decrypting the encrypted license information. The decryption decrypts the encrypted license information with use of an identifier corresponding to the operation to be executed, the identifier being selected from among a plurality of types of identifier indicated by the license management information.
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