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Terminal device, server device, and content distribution system

A technology of terminal device and distribution system, applied in the field of server device for decryption key

Inactive Publication Date: 2011-11-30
PANASONIC INTELLECTUAL PROPERTY CORP OF AMERICA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, when the content and content-related information are retransmitted multiple times, the terminal device 1030 may allow the content to be used multiple times each time it is retransmitted.

Method used

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  • Terminal device, server device, and content distribution system
  • Terminal device, server device, and content distribution system
  • Terminal device, server device, and content distribution system

Examples

Experimental program
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Embodiment Construction

[0089] Hereinafter, embodiments according to the present invention will be described with reference to the drawings. In addition, although the present invention is described using the following examples and drawings, the purpose is only for illustration, and the present invention is not limited thereto.

[0090] figure 2 It is a diagram illustrating an overall configuration of the content distribution system 1 in the present invention.

[0091] exist figure 2 Among them, the content distribution system 1 includes: a license server 101 , a content server 102 , a plurality of terminal devices 103 and a transmission medium 104 . Each component of the content distribution system 1 will be described below.

[0092] The license server 101 is installed on the side of the operator α, manages the agreement (use right) of the content for the user β, and this license server 101 distributes information including the agreement on the user β to the terminal device 103 (agreement inform...

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PUM

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Abstract

To provide a content distribution system which can prevent use of content which has been temporarily stored after the valid period. A content distribution system (1) including a license server (101) which issues a license, a content server (102) which transmits the content, a terminal device (103) which controls use of the content based on the issued license. The terminal device (103) does not allow the use of the received encrypted content when it is judged that the encrypted content received from the content server (102) is not the content received in real time.

Description

technical field [0001] The present invention relates to a content distribution system for distributing digital content such as video and music through a network, and more particularly to a server device for distributing digital content and a decryption key for the digital content, and a terminal device for utilizing the digital content using the decryption key. Background technique [0002] In recent years, digital content such as music, video, or games (hereinafter simply referred to as "content") is distributed from a server device to a terminal device through communication such as the Internet or digital broadcasting, and a type of terminal device called "content" A system that can utilize content, such as a "content distribution system", has gradually entered the stage of practical use. In a general content distribution system, a copyright protection technology is used to protect the copyright of the content so as to prevent unauthorized use of the content by malicious u...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/08G06F21/24G06Q30/00G06F21/10
CPCG11B20/00768H04N21/2541H04L9/0637H04N21/4405G11B20/00869H04N21/63345H04L9/0891H04N21/4334H04L2209/60H04N21/4627G11B20/00224H04L9/14H04L9/002G11B20/00847G11B20/00086G11B20/0021H04L9/00G06F21/10H04N21/26606
Inventor 冈本隆一东吾纪男村上弘规德田克己
Owner PANASONIC INTELLECTUAL PROPERTY CORP OF AMERICA
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