Patent ID: 8509434
Filing Date: 2013-08-13
Classification: H04L,H04N

Abstract:
1. A method for protecting scalable video contents in a scalable video coding contents providing system that encrypts and provides scalable video contents requested by a scalable video user terminal, the method comprising: receiving the requested scalable video contents; storing the received scalable video contents in a scalable video contents archive and controlling to perform authentication and generate an encryption key to be sent to the user; performing the authentication and generating the encryption key; imaging a scalable video in response to the request and coding the imaged scalable video contents, the coded scalable video contents comprising a plurality of scalability layers; encrypting only a portion of the plurality of scalability layers of the coded scalable video contents using the generated encryption key, resulting in encrypted scalable video coding contents, wherein the encrypting comprises selectively encrypting a disassembled low-pass filtered picture of the lowest layer or a high-pass filtered picture of an upper layer with respect to a temporally disassembled picture of an input video of a base layer; generating encryption information metadata for the encrypted scalable video coding contents; and transmitting the encrypted scalable video coding contents and the generated encryption information metadata to the scalable video user terminal via a network or a storage medium.