Title:
デジタルコンテンツの配布方法
Document Type and Number:
Japanese Patent JP4500677
Kind Code:
B2
Abstract:
Distributing information, including the steps of watermarking the digital content, distributing the digital content using a multi-source system, and partially fingerprinting digital content at each stage of moving information from a point of origin to the viewer. "Adaptation" of the digital content to the recipient includes maintaining the digital content in encrypted form at each such intermediate device, including decrypting the digital content with a key unique to both the device and the specific movie, selecting a portion of the watermark locations into which to embed information, embedding fingerprinting information into those locations sufficient to identify the recipient, and encrypting the fingerprinted digital content with a new such key.
Inventors:
Daniel A. Collens
Steven Watson
Michael A. Malcolm
Steven Watson
Michael A. Malcolm
Application Number:
JP2004520052A
Publication Date:
July 14, 2010
Filing Date:
July 09, 2003
Export Citation:
Assignee:
KALEIDESCAPE, INC.
International Classes:
G06T1/00; G09C5/00; G09C1/00; H04L9/00; H04N1/387; H04N7/16; H04N7/24; H04N7/26
Domestic Patent References:
| JP2002118834A | ||||
| JP2001326920A |
Foreign References:
| US20010051996 |
Other References:
柴多直樹,“コンテンツ配信サービス向け電子透かしシステム”,NEC技報,日本,株式会社NECクリエイティブ,1998年 9月25日,第51巻,第9号,p.100-104
高橋由泰,青木輝勝,安田浩,“階層化コンテンツ超流通システム”,情報処理学会研究報告,日本,社団法人情報処理学会,2001年 9月 8日,Vol.2001,No.85,p.25-32,2001-EIP-13
高橋由泰,青木輝勝,安田浩,“階層化コンテンツ超流通システム”,情報処理学会研究報告,日本,社団法人情報処理学会,2001年 9月 8日,Vol.2001,No.85,p.25-32,2001-EIP-13
Attorney, Agent or Firm:
Takuji Yamada
Mitsuo Tanaka
Mitsuo Wada
Kazuhisa Inaba
Masahiro Ishino
Mitsuo Tanaka
Mitsuo Wada
Kazuhisa Inaba
Masahiro Ishino