Title:
エンドユーザの電子コンテンツ使用を追跡するシステム
Document Type and Number:
Japanese Patent JP4209592
Kind Code:
B2
Abstract:
A system for tracking usage of digital content on user devices. Electronic stores coupled to a network sell licenses to play digital content data to users. Content players, which receive from the network the licensed content data, are used to play the licensed content data. Additionally, a logging site that is coupled to thte network tracks the playing of the content data. In particular, the logging site receives play information from the network, and the play information includes the number of times that the content data has been played by the associated content player. Also provided is a method for tracking usage of digital content on user devices. According to the method, a license to play digital content data is sold to a user, and the licensed content data is transmitted to a content player for the user.; Further, information is transmitted to a logging site whenever the content data is played by the content player or copied from the content player to an external medium so that usage of the licensed content data can be tracked.
Inventors:
Drak, John
Downs, Edgar
Glues, George, Gregory
Hatad, Marco
Lehman, Christopher
Lot speech, jeffrey
Medina, Caesar
Millstead, Kennis
Downs, Edgar
Glues, George, Gregory
Hatad, Marco
Lehman, Christopher
Lot speech, jeffrey
Medina, Caesar
Millstead, Kennis
Application Number:
JP2000564425A
Publication Date:
January 14, 2009
Filing Date:
August 12, 1999
Export Citation:
Assignee:
Level Three Communications, LRC
International Classes:
G06F1/00; G06F21/10; G06F21/16; G06F21/60; G06F21/62; G06F21/64; G06Q20/36; G06Q20/38; G06Q30/06; G09C1/00; G10K15/02; H03M7/30; H04L9/08; H04L9/10; H04L29/06; H04L29/08; H04N7/167; H04N7/173; H04N21/2347; H04N21/418; H04W4/02; H04W4/029
Domestic Patent References:
| JP1040100A | ||||
| JP6500878A | ||||
| JP3214834A |
Other References:
工藤、”時間暗号プロトコルとその応用”、1998年 暗号と情報セキュリティ情報シンポジウム講演論文集,1998年1月29日,SCIS’98-1.3.A
Attorney, Agent or Firm:
Mitsuo Matsui
Yuko Igarashi
Hiroshi Murakami
Yuko Igarashi
Hiroshi Murakami