Method and apparatus for signal processing

Details Method and apparatus for signal processing Method and apparatus for signal processing

H - Electricity

04

L

H04L 9/32 (2006.01) G09C 5/00 (2006.01) G10L 21/00 (2006.01) H03M 7/30 (2006.01) H04N 1/387 (2006.01)

Patent

CA 2333884

For copyright protection, storage means stores a reference indicating an amount of information to determine whether a digital signal containing electronic watermark information is compressed. Extraction means extracts the amount of the electronic watermark information from the digital signal to be protected. Detector means collates the extracted amount with the reference amount to determine whether the signal has been compressed, and it permits the signal to be copied if uncompressed and prohibits it from being copied if compressed.

Pour des raisons de protection du droit d'auteur, des moyens de stockage stockent une référence renseignant sur l'ampleur de l'information requise pour déterminer si un signal numérique avec filigrane électronique est comprimé. Des moyens d'extraction permettent d'extraire le volume d'information sur le filigrane électronique du signal numérique à protéger. Des moyens de détection trient les données extraites et la référence pour déterminer si le signal à été compressé, et, selon que ce signal n'est pas compressé ou bien est compressé, permettent ou au contraire interdisent de copier ledit signal.

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