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Recording medium and copy apparatus

A technology for copying equipment and recording media, applied in data recording, record carrier type, recording signal processing, etc., and can solve problems such as wasting time

Inactive Publication Date: 2005-05-11
PANASONIC CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This leads to the problem of wasting time before judging that copying is not allowed

Method used

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  • Recording medium and copy apparatus
  • Recording medium and copy apparatus
  • Recording medium and copy apparatus

Examples

Experimental program
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Effect test

Embodiment Construction

[0035] A content reproduction system 1 as an embodiment of the present invention is described below.

[0036] 1. Structure of content reproduction system 1

[0037] The content reproduction system 1 is composed of a production device 20 , a production device 30 , a server device 40 , a reproduction device 50 and a playback device 60 .

[0038] The manufacturer of the optical disc on which the content is recorded has the ownership of the manufacturing device 20 . The manufacturing apparatus 20 manufactures the optical disc 11, records one or more contents on the optical disc 11, and one or more pieces of copy control information (hereinafter, referred to as "display use copy control information") for display purposes, wherein the copy control The information corresponds to the content respectively. For example, each content is music digital data, and copy control information is embedded in the digital data (hereinafter referred to as "embedded copy control information"). Her...

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Abstract

When copying digital data recorded on a recording medium, a recording medium and a copying apparatus reduce user confusion by notifying the user in advance of copy control information (such as a watermark, etc.) embedded in the digital data. The recording medium on which digital data is recorded is composed of a content data storage area, a display use copy control information storage area, and an index information storage area. The display use copy control information storage area stores a display use copy control information for display when copying. Copy control information. Since the display use copy control information in the display use copy control information storage area is the same as the copy control information embedded in the digital data, the copying apparatus can notify the user of the copy control information before copying the digital data.

Description

technical field [0001] The present invention relates to a recording medium on which digital data is recorded and a reproduction device for duplicating digital data, and more particularly to a method for duplicating digital data whose copyright is protected using watermark technology. Background technique [0002] Conventionally, optical discs such as Laser Disc (LD), Compact Disc (CD), Mini Disc (MD) and DVD (Digital Versatile Disc) are widely used as recording media for storing such things as music data and moving picture data. digital data (hereinafter referred to as "content data"). Recently, semiconductor memories are showing signs of becoming more popular. This is because the semiconductor memory is compact and does not have the problem of sound skipping compared with the above-mentioned optical disc. [0003] Accurate duplication of content data recorded on recording media such as those described above can be easily performed. In order to prevent this, copying of su...

Claims

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Application Information

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IPC IPC(8): G11B20/00G11B27/034G11B27/34
CPCG11B20/00086G11B20/00768G11B20/00884G11B27/034G11B27/34G11B2220/216G11B2220/2545G11B2220/2562G11B2220/2575G11B2220/61G11B20/10
Inventor 宗广和井上信治前田卓治越智诚伊藤孝幸
Owner PANASONIC CORP
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