Patent ID: 8756648
Filing Date: 2014-06-17
Classification: H04H,H04N

Abstract:
1. A method implemented by a device in a network, the network providing individually marked digital signals to be transmitted to a plurality of recipient user devices, the method comprising: receiving a content digital signal and one or a plurality of mark signals, and generating an individually marked signal to be provided to one of the user devices by combining the content digital signal with the one or a plurality of mark signals, wherein combining the content signal with the one or a plurality of mark signals is performed according to a layered coding scheme, wherein the content signal is encoded into one or more layers included in a set of layers and the one or a plurality of mark signals are each encoded into one or more other layers in the set of layers, and wherein the content signal and the one or a plurality of mark signals are obtained by separately decoding each of the layers in the set of layers.