Title:
データ運用方法
Document Type and Number:
Japanese Patent JP4611606
Kind Code:
B2
Abstract:
Data application method enabling evaluations to be properly received while content is being protected, enabling content users to use only what they want to use in the amount they want to use it, and enabling advertising providers in certainty to have users use ads. The method includes: a step of converting first data for permitting use based on predetermined conditions, into encrypted first data by means of a predetermined encryption key; a step of generating watermarked second data in which the encryption key is embedded, as an invisible electronic watermark, into second data for permitting use unconditionally; and a step of compositing and distributing the encrypted first data and the watermarked second data.
Inventors:
Hideyuki Hirano
Application Number:
JP2002337998A
Publication Date:
January 12, 2011
Filing Date:
November 21, 2002
Export Citation:
Assignee:
富士通株式会社
International Classes:
G06F12/14; G06F21/10; G06F21/60; G06F21/62; G06F21/64; G06T1/00; G09C5/00; H04L9/08; H04L9/32; H04N1/387; H04N7/08; H04N7/081; H04N7/16; H04N21/6334; H04N21/81; H04N21/8358
Domestic Patent References:
| JP200178007A | ||||
| JP2000268497A | ||||
| JP2001332019A |
Foreign References:
| WO2002073616A1 |
Other References:
小谷誠剛,外2名,”インターネットセキュリティ”,FUJITSU,富士通株式会社,2001年7月13日,VOL.52 No.4,p.329-337
Attorney, Agent or Firm:
Global IP Tokyo Patent Business Corporation