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:
Sep. 15, 2015
Filed:
Feb. 06, 2008
Shinichi Kurihara, Yokohama, JP;
Shinichi Kurihara, Yokohama, JP;
KABUSHIKI KAISHA TOSHIBA, Tokyo, JP;
Abstract
A user terminal device specifies presence or absence of additional recording in issuing a content request, and in the case of additional recording, the device transmits medium information and encrypted information of pre-recorded contents to a delivery center. When receiving a content additional recording request from the device, the delivery center decrypts once encrypted contents to be additionally recorded with the corresponding-content keys. The encrypted key information is decrypted by the medium information from the device to decrypt content keys of the pre-recorded contents and re-encrypts encrypted contents to be additionally recorded to deliver the re-encrypted contents to the device. When receiving contents for additional recording, the device records the received contents so as to be related to the pre-recorded contents, on a recording medium.