Patent ID: 8423778
Filing Date: 2013-04-16
Classification: G06F,G06T,H04N

Abstract:
1. A content distribution method for audiovisual content data comprising: invisibly watermarking digital audiovisual content data input from an audiovisual content data source to create invisibly watermarked data; encrypting the invisibly watermarked data using an encryption key to create encrypted data; sending the encrypted data and a decryption key to a distribution network; decrypting the encrypted data to generate the invisibly watermarked data; adding visible watermarking data to the invisibly watermarked data to generate visibly and invisibly watermarked data, wherein the visible watermarking data includes subtitles and logo data, and wherein adding the visible watermarking data to the invisibly watermarked data to generate the visibly and invisibly watermarked data includes: compressing the visibly and invisibly watermarked data to create compressed data; scrambling the compressed data to create compressed scrambled data; and sending the compressed scrambled data to a receiver.