Audio watermarking technique for motion picture presentations

Details Audio watermarking technique for motion picture presentations Audio watermarking technique for motion picture presentations

G - Physics

10

L

G10L 19/00 (2006.01) G11B 20/00 (2006.01)

Patent

CA 2657363

Audio watermarking of a motion picture film (10) containing a DTS® sound track (12) occurs by selectively deleting one or more identifiers that appear within the synchronizing codes in the sound track. Upon screening of the film by a projector (102) a DTS® reader (104) will send information to a DTS® CD player (106) which can detect the absence of the identifier and generate the audio watermark accordingly.

Selon la présente invention, l'insertion d'un filigrane audio dans un film cinématographique (10) contenant une piste sonore DTS® (12) se produit en effaçant sélectivement un ou plusieurs identifiants qui apparaissent dans les codes de synchronisation se trouvant dans la piste sonore. Lors de la projection du film par un projecteur (102), un lecteur DTS® (104) va envoyer de l'information à une platine CD DTS® (106) qui peut détecter l'absence de l'identifiant et générer en conséquence le filigrane audio.

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