Copy method avoiding bit-to-bit duplication of digital data and reading device for implementing same

A digital data and reading device technology, applied in the direction of electrical digital data processing, digital data processing parts, digital recording/reproduction, etc., can solve the problem of unavoidable copying by pirates

Inactive Publication Date: 2007-07-04
THOMSON MULTIMEDIA SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods do not prevent the copying of a pirate who creates a copy or similar as much as possible of the original by implementing the term bit-by-bit copy

Method used

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  • Copy method avoiding bit-to-bit duplication of digital data and reading device for implementing same
  • Copy method avoiding bit-to-bit duplication of digital data and reading device for implementing same

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0028] The invention will be described with reference to the simultaneous reading of digital data recorded on a digital medium, such as a DVD representing a digital versatile disc, and duplicating to a second blank medium also consisting of a DVD, in this case it Must be recordable, i.e. a DVD-R. However, it will be apparent to those skilled in the art that other sources of digital information may be used, particularly digital information generated by decoders and transmitted by "radio stations", or digital information stored on media such as a Magnetic tape, a recordable or non-recordable optical disc, ie a CD, a CD-R, CD-RW, DVD, DVD-R, a magneto-optical disc, etc. The recording medium consists of a recordable magnetic tape, a CD-R, a CD-RW, a DVD-R or a magneto-optical disk allowing audio and / or video information to be stored in digital form.

[0029] As depicted in FIG. 1, the copying method according to the present invention is capable of copying digital information reco...

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PUM

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Abstract

The invention concerns a copy method avoiding bit-to-bit duplication of digital data and a reading device for implementing said method. The method is characterised in that the medium whereon the digital data are to be duplicated comprises a serial number used for formatting the read digital data before writing them on said medium. The invention is useful in particular for duplicating DVD's, CD's, magnetic tapes or the like.

Description

technical field [0001] The present invention relates to a method for avoiding bit-by-bit duplication of digital data generated by a first information source on a medium. It also relates to an apparatus for implementing this method. Background technique [0002] The digital data shows that properties can be reproduced without regard to quality loss. Indeed, reproduction consists in transmitting a series of binary information, ie some "1" and "0" transmitted from the information source to the recorder device. Errors that commonly occur during duplication are easily corrected by using well-known error correction methods. Therefore, when an information medium or a data source contains digital data, it is relatively simple to record them on a recordable medium as well. [0003] To protect digital data from illegal copying, various methods can be used. [0004] Typically, the supplier provides the digital data medium, such as a software-loaded disk, with a marking that prevent...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11B20/00G06F1/00G06F3/06G09C1/00G11B20/10G11B23/28H04L9/08
CPCG11B20/00086G11B2220/2545G11B20/0021G11B23/284G11B20/00123G11B20/00115G11B20/00347G11B2220/2562G11B2220/90G11B20/00094G11B20/00195G11B20/00217
Inventor 西尔万·谢弗罗埃里克·迪尔特迪·菲龙
Owner THOMSON MULTIMEDIA SA
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