Digital data copyright protection system

A digital data, copyright protection technology, applied in the direction of electronic digital data processing, digital data processing components, transmission systems, etc., can solve the problem of expensive music data distribution, and achieve the effect of copyright protection

Inactive Publication Date: 2001-11-07
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, with this traditional system, online music distribution and billing are personalized on a one-to-one basis, so distribution of

Method used

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Examples

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no. 1 example

[0059] 1, 2, and 3, described below is a digital data copyright protection system according to a first embodiment of the present invention. FIG. 1 is a diagram showing the structure of a digital data copyright protection system.

[0060] The digital data copyright protection system includes first to third digital data recording and reproducing apparatuses 1011 to 1013, a content server 102 for distributing digital data, and an accounting server 103 for processing by accounting. There is interconnection via the Internet. Here, the Internet is not limited, and may be a telephone line, a private network, a satellite broadcast network, or a CATV network. The number of digital data recording and reproducing devices is not a problem here.

[0061] In FIG. 1, first to third digital data recording and reproducing apparatuses 1011 to 1013 are represented by personal computers connected to the Internet. A user receives digital data via the Internet or from media such as music CDs for...

no. 2 example

[0142]The digital data copyright protection system according to the second embodiment of the present invention is almost the same as that described in the first embodiment. Specifically, the content server 102 and accounting server 103 here are the same as those in the first embodiment. In addition, the construction of the digital data recording and reproducing apparatus is almost the same here. Therefore, in the second embodiment, only points different from the first embodiment will be described. Any identical components use the same parameters and are not described here.

[0143] Fig. 17 is a block diagram showing the structure of the digital data recording and reproducing apparatus of the second embodiment. In FIG. 17, a digital data recording and reproducing device 1 701 treasure house super distribution data receiving unit 401, super distribution data storage area 402, RMI acquisition unit 403, RMI storage area 404, content key extraction unit 405, data readout unit 406...

no. 3 example

[0151] According to the third embodiment, as a specific example of the super distribution data described in the first to second embodiments, a content distribution format called SDAF (Secure Digital Audio Format) is described below. Referring to FIGS. 18 to 39 , details about SDAF are first described, and then how to use SDAF is described with reference to FIGS. 18 to 39 .

[0152] The content distribution format (SDAF) according to this embodiment is used to describe multimedia content including audio, image, video, text and document data. Here, the multimedia content described by SDAF is called SDAF title. Each presentation data including the SDAF header is called a content element (hereinafter abbreviated as CEL) here. Each CEL is assigned a unique CEL identifier (hereinafter abbreviated as CEL_ID) in the SDAF header.

[0153] The SDAF title is distributed by dividing it into units called SDAF packages. Each SDAF package is assigned a package identifier that is unique ac...

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Abstract

A digital data copyright protection system especially for unencrypted data to protect a copyright thereof while charging a user appropriate royalties therefor. In the digital data copyright protection system, super distribution data is received by a super distribution data receiving unit (401) for storage in a super distribution data storage region (402). Right management information is acquired by an RMI acquiring unit (403) for storage in an RMI storage region (404). Unencrypted data is read by a data reading unit (406), encrypted by a data encrypting unit 408 with a key extracted by a content key extracting unit 405, and then is provided with the right management information in an RMI adding unit (409) for storage. Once the data is through with a purchase processing in a purchase processing unit (412), the data is decrypted by the content decrypting unit (414), and is played back by a reproduction control unit (415) and a speaker (416), or provided with an ID stored in a user ID storage region (418) by a distributor ID adding unit (411) for output.

Description

field of invention [0001] The present invention relates to a digital data copyright protection system, in particular to a system for protecting the copyright of music data, thereby collecting appropriate usage fees from users at the same time. Background technique [0002] In recent years, CDs (Compact Discs) have become a popular medium for music. Such CDs are easy to carry, so it is convenient for people to bring them to others for them to enjoy. This hand-to-hand distribution of music is often in the millions. The problem here is that there is little protection for CDs from piracy (ie unauthorized copying). In addition, it is easy to reproduce such a CD into a CD-R (Compact Disc Recordable) which has recently become commercially available. As a medium of music data that has previously been recorded in CDs, MDs (Mini Discs) are also starting to gain popularity. Therefore, music data can be reproduced through them, and if the music data is enjoyed by others outside the ...

Claims

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Application Information

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IPC IPC(8): G06F1/00G06F12/14G06F21/10G06Q30/00G06Q30/02G06Q30/04G06Q30/06G06Q50/10G09C1/00G10K15/02G10L19/00G10L25/51G11B20/00G11B20/10H04H1/02H04L29/06H04L29/08
CPCG11B20/00086G06F2221/0791G06F2211/007H04L2463/101G06F21/10G11B20/0021H04L2463/102H04L69/329H04L29/06G11B20/0084G11B20/00746G06F2221/2137G06Q20/1235G11B20/0071H04L29/08072G06Q30/06H04L63/104H04L63/0428G06F21/1086
Inventor 田川健二小塚雅之冈本隆一野々村知之松岛秀树德田克己大谷友佳子山本雅哉井上光
Owner PANASONIC CORP
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