Title:
認証情報生成装置、コンテンツ配信装置、受信装置およびセキュリティモジュール
Document Type and Number:
Japanese Patent JP5033090
Kind Code:
B2
Abstract:
To provide a content distribution system capable of protecting the copyright of a content by confirming rightfulness of a reception device in a limited reception method.
This content distribution system 1 is characterized in that confidential information on a predetermined group of reception devices basis generated by an authentication information generator 10 is previously registered in the reception device 60 and a security module 70; and the security module 70 authenticates the reception device 60 by determining the identity of the confidential information and the identity with updated confidential information distributed from a content distribution device 20.
COPYRIGHT: (C)2010,JPO&INPIT
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Inventors:
Ogawa alone
Haruo Hoshino
Takeshi Otake
Toruyuki Oya
Hiroyuki Kawakita
Goichiro Hanaoka
Haruo Hoshino
Takeshi Otake
Toruyuki Oya
Hiroyuki Kawakita
Goichiro Hanaoka
Application Number:
JP2008229941A
Publication Date:
September 26, 2012
Filing Date:
September 08, 2008
Export Citation:
Assignee:
Japan Broadcasting Corporation
International Classes:
H04N7/167; H04L9/32; H04N7/173; H04N21/418; H04N21/441; H04N21/4623
Domestic Patent References:
| JP200031922A | ||||
| JP2002152194A | ||||
| JP200734835A |
Attorney, Agent or Firm:
Isono Dozo
Etsuo Tada
Etsuo Tada