Abstract: The present invention relates to an adhesive composition based on a lignin structure, wherein the lignin structure is a lignin functionalised by reaction with dimethylformamide and acrylic acid.

Abstract: A bandwidth management system, receiver, and method of managing bandwidth in a content delivery system are described. In one embodiment, the method includes: identifying two or more content items which are associated with at least some common content and which are temporally related; determining a relative priority of the least some of the identified content items; and allowing a receiver requesting the content associated with a lower priority content item to access a multicast associated with a higher priority content item.

Abstract: A bandwidth management system, receiver, and method of managing bandwidth in a content delivery system are described. In one embodiment, the method includes: identifying two or more content items which are associated with at least some common content and which are temporally related; determining a relative priority of the least some of the identified content items; and allowing a receiver requesting the content associated with a lower priority content item to access a multicast associated with a higher priority content item.

Abstract: Systems, methods and devices for distributing a group key between a transmitter and a group of receivers connected over a network. The described group key distribution can be implemented in any television network for encrypted transmission of television related content to large and dynamic groups of subscribers' receivers. Wherein each receiver contributes to the group key by securely transmitting its contribution to the transmitter. The transmitter also contributes to the group key and generates the group key based on all contributions. The transmitter further generates partial keys specific to each receiver such that each receiver can generate a copy of the group key from its contribution and the partial key it receives. The transmitter sends each receiver its corresponding partial key so that each receiver can calculate a copy of the group key.