Signal tracing system and method

Details Signal tracing system and method Signal tracing system and method

H - Electricity

04

N

H04N 7/16 (2006.01)

Patent

CA 2438555

The invention relates to a system and method for determining the origin of a signal received by a pay-per-view television subscriber in a given region. The invention makes use of a system comprising encryption means which are located at the premises of a main operator, means for transmitting an encrypted video signal to at least one local operator and decryption means which are located at the premises of said local operator. The invention is characterised in that the decryption means comprise identification means that replace all or part of the decrypted video signal by an identification signal characterising the decryption means.

Le but de la présente invention est de proposer un système et une méthode pour déterminer l'origine d'un signal reçu par un abonné de télévision à péage dans une région donnée. Ce but est atteint par un système comprenant des moyens d'encryption situés chez un opérateur principal, des moyens de transmission d'un signal vidéo encrypté vers au moins un opérateur local et des moyens de décryption chez cet opérateur local, caractérisé en ce que les moyens de décryption comprennent des moyens d'identification remplaçant tout ou partie du signal vidéo décrypté par un signal d'identification caractérisant les moyens de décryption.

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