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:
May. 03, 2011
Filed:
Mar. 04, 2005
Jun Goto, Tokyo, JP;
Yusei Nishimoto, Tokyo, JP;
Akitsugu Baba, Tokyo, JP;
Haruyuki Nakamura, Tokyo, JP;
Kiyohiko Ishikawa, Tokyo, JP;
Tatsuya Kurioka, Tokyo, JP;
Jun Goto, Tokyo, JP;
Yusei Nishimoto, Tokyo, JP;
Akitsugu Baba, Tokyo, JP;
Haruyuki Nakamura, Tokyo, JP;
Kiyohiko Ishikawa, Tokyo, JP;
Tatsuya Kurioka, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Nippon Hoso Kyokai, Shibuya-Ku, Tokyo, JP;
Abstract
The present invention provides an access control method of controlling acceptance or rejection of access to content from metadata. The access control method according to the present invention includes a step of producing metadataA for contentA and embedding a digital signatureA of a producer who has produced the metadata as producer information in the produced metadataA, a step of embedding an identifierA indicating which metadata are accessible to the content in license information required to play back the contentA, and an access propriety control step of comparing the digital signatureA with the identifierA to control propriety of access to the contentA from the produced metadataA.