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Copyright protection system, reproduction device, and reproduction method

A playback device and external device technology, applied in transmission systems, digital transmission systems, secure communication devices, etc., can solve the problem of malicious use of audio-visual records

Active Publication Date: 2009-10-28
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] As described above, users can receive services that suit their interests by sending their own viewing histories to the server. However, there is a problem that the viewing histories, which are user personal information, cannot are collected in the server
As a result, if the administrator of the server is a person with malicious intentions, the audiovisual history collected as the user's personal information may be used maliciously, such as being used in a place where the user does not know.

Method used

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  • Copyright protection system, reproduction device, and reproduction method
  • Copyright protection system, reproduction device, and reproduction method
  • Copyright protection system, reproduction device, and reproduction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0039] 1.1 Structure of Copyright Protection System

[0040] copyright protection systems such as figure 1 Shown is constituted by an authentication station terminal device 101 , a content provider terminal device 102 , a recording medium 103 and a reproduction device 104 .

[0041] The authentication station terminal device 101 provides the content provider terminal device 102 with a pair of a certificate and a private key, and provides a white list signed by the authentication station in response to a request from the content provider terminal device 102 . In addition, the authentication station terminal device 101 provides the playback device 104 with a public key held by the authentication station itself (the authentication station public key) and an invalidation list signed by the authentication station. Details about the whitelist will be explained later.

[0042] Based on a request from the playback device 104, the content provider terminal device 102 provides the pla...

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PUM

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Abstract

There is provided a reproduction device capable of preventing user personal information from being transmitted to an external device controlled by a malicious person. The reproduction device uses an invalidating list and a valid list in combination with each other, so that a certification to be invalidated because of being exposed at a certain timing or being hacked is invalidated by describing the certification into the invalidating list, thereby enabling user personal information to be prevented from being transmitted. On the other hand, a content produced before being exposed is described into the valid list, thereby enabling the content to be used. Therefore, both security and user convenience can be obtained at the same time.

Description

technical field [0001] The present invention relates to a technology for preventing unauthorized acquisition of viewing history of a playback terminal, etc., for a service performed in cooperation between a recording medium on which digital contents such as movies and music are recorded, and a playback terminal connected to an external network. Background technique [0002] In recent years, with the increase in the capacity of recording media and the increase in bandwidth of networks, digital content (hereinafter referred to as content) obtained by digitizing works such as movies and music (hereinafter referred to as content) is recorded on recording media or distributed through broadband networks. universal. In such a system, in order to protect the copyright of the content, reproduction or duplication of the content, etc. must be performed only under restrictions based on the consent of the copyright owner. As a prior art for protecting copyrighted works from unauthorized...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F21/24G06F21/22H04L9/32G06F21/10G06F21/12G06F21/44G06F21/60G06F21/62G06F21/64
CPCH04L9/3294H04L9/3268G06F21/10H04L2209/603G06F21/121G06F21/51G06F21/1076
Inventor 中野稔久山本雅哉冈田智之小塚雅之
Owner PANASONIC CORP
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