Dynamic relocation of the service data channel

Details Dynamic relocation of the service data channel Dynamic relocation of the service data channel

H - Electricity

04

N

H04N 7/167 (2006.01) H04N 7/16 (2006.01)

Patent

CA 2220722

A method and apparatus for preventing unauthorized descrambling of cable programming includes selective relocation of the service data channel within the vertical blanking interval thereby preventing unauthorized descrambling of programming by conventional descramblers.

Méthode et appareil de prévention de désembrouillage non autorisé d'émissions câblodistribuées. Comprend le déplacement sélectif du canal de données de service à l'intérieur de l'intervalle de suppression verticale, ce qui empêche le désembrouillage non autorisé d'émissions au moyen de désembrouilleurs ordinaires.

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