Title:
デジタルコンテンツのためのアクセス制御
Document Type and Number:
Japanese Patent JP4679093
Kind Code:
B2
Abstract:
A recording arrangement is provided for applying access control processing to input data content and for recording access-controlled data content on a content storage medium. The recording arrangement comprises an encryption apparatus for encrypting portions of the input data content and an access control memory device operable to securely store information from which a private key of a public key / private key pair associated with a data content recording user or user group is derivable. The encryption apparatus and the access control memory device co-operate to provide means for generating access control data comprising content recorder access control data and default access control data. The default content access control data providing the same level of access to the input data content as the level of access available to the data content recording user / user group. A recording means is provided for recording the encrypted input data content and the content access control data on the content storage medium.
Inventors:
Perry Jason Charles
Taylor, andrew robert
Tupson, Daniel Warren
Hooper, Daniel Luke
Emanimaru, Alves-Mauria
Taylor, andrew robert
Tupson, Daniel Warren
Hooper, Daniel Luke
Emanimaru, Alves-Mauria
Application Number:
JP2004226124A
Publication Date:
April 27, 2011
Filing Date:
August 02, 2004
Export Citation:
Assignee:
Sony Europe Limited
International Classes:
H04L9/08; G06F21/10; G09C1/00; G11B20/00
Domestic Patent References:
| JP2003158514A | ||||
| JP2003101526A | ||||
| JP2002009763A | ||||
| JP2000022680A |
Foreign References:
| WO2003028281A1 |
Other References:
芳尾太郎,“ディジタル著作権:小型メモリ・カードで音楽著作権を守る”,日経エレクトロニクス,日本,日経BP社,1999年 3月22日,第739号,p.49-53
“デジタルコンテンツのキーテクノロジー メモリースティック著作権保護技術 MagicGate”,CX-PAL,日本,[online],2000年 4月,44号,[検索日:平成22年8月27日],インターネット,URL,http://www.sony.co.jp/Products/SC-HP/cx_pal/vol44/index.html
“デジタルコンテンツのキーテクノロジー メモリースティック著作権保護技術 MagicGate”,CX-PAL,日本,[online],2000年 4月,44号,[検索日:平成22年8月27日],インターネット,URL,http://www.sony.co.jp/Products/SC-HP/cx_pal/vol44/index.html
Attorney, Agent or Firm:
Junichi Omori
Ori Akira
Ori Akira