Upgrading of encryption

H - Electricity – 04 – N

Patent

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Details

H04N 21/2347 (2011.01) G06F 21/00 (2006.01) H04L 9/00 (2006.01)

Patent

CA 2437014

A method of upgrading an encryption process for encryption of video information from an old encryption process to a new encryption process, consistent with certain embodiments involves selecting a portion of video content for selective encryption. The selected portion is duplicated to produce first and second copies of the selected portion. The first copy is encrypted using the old encryption process and the second copy is encrypted using the new encryption process to produce a dual partially encrypted segment of video information that can either be broadcast over a cable or satellite system or stored in a package medium as two program chains.

Méthode de mise à niveau d'un processus de cryptage d'informations vidéo à partir d'un vieux processus de cryptage vers un nouveau processus de cryptage qui, conformément à certaines réalisations de l'invention, consiste à sélectionner une partie du contenu vidéo pour un cryptage sélectif. Cette partie sélectionnée est reproduite à l'aide de l'ancien processus de cryptage, et la seconde copie est chiffrée au moyen du nouveau processus de cryptage afin de produire une partie jumelée partiellement cryptée des informations vidéo qui peuvent soit être diffusées par câble ou par satellite, ou enregistré dans un médium groupé à titre de deux flux de programme.

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