提示されるオリジナルオーディオ又はビデオデータの不正利用に対する透かしによるプロテクションの方法及びシステム

Title:

提示されるオリジナルオーディオ又はビデオデータの不正利用に対する透かしによるプロテクションの方法及びシステム

Document Type and Number:

Japanese Patent JP5897570

Kind Code:

B2

Abstract:

For protecting by watermarking against non-authorised use, e.g. non-authorised recording or copying, original audio or video data which are to be presented in a digital cinema, a sender site generates from the original signal at least two differently pre-watermarked versions for successive blocks or frames of the signal, wherein these versions are derived by applying a repeated watermark symbol value to a version and different watermark symbol values to the different versions. The pre-watermarked signal versions are encrypted and transferred e.g. as data files to a digital cinema unit in which they are decrypted. According to the values of a desired watermark information word, corresponding frames or blocks from said decrypted and pre-watermarked versions are assembled in a successive manner, so as to provide and present a watermarked version of said original audio or video signal that carries said watermark information word.

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Inventors:

Arnold, Michael
Baume, Peter, Georg
Grease, Ulrich
Facing, Walter

Application Number:

JP2013522199A

Publication Date:

March 30, 2016

Filing Date:

July 26, 2011

Export Citation:

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Assignee:

Thomson Licensing

International Classes:

G10L19/018; H04N1/387; H04N5/91

Domestic Patent References:

JP2003242037A
JP2001309162A
JP200976985A
JP2008301500A
JP2005130204A

Foreign References:

WO2004093448A1

Other References:

Michael ARNOLD, et al.,"A Phase Modulation Audio Watermarking Technique",Information Hiding,Springer-Verlag,2009年 6月,pp.102-116
Olivier BILLET, et al.,"Efficient Traitor Tracing from Collusion Secure Codes",Proceedings of the Third International Conference on Information Theoretic Security (ICITS 2008),Springer-Verlag,2008年 8月,Vol.5155,pp.171-182

Attorney, Agent or Firm:

Tadashige Ito
Tadahiko Ito
Shinsuke Onuki

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