Patent ID: 7502862
Filing Date: 2009-03-10
Classification: H04L

Abstract:
1. A data transmission device for transmitting data to a plurality of client devices, the data being transmitted according to a plurality of predetermined profiles, each one of the plurality of client devices being associated with at least one of the plurality of predetermined profiles, the data transmission device comprising: means for adapting content of the data to be transmitted as a function of the plurality of predetermined profiles by generating data groups, each one of the data groups representing the content to be transmitted according to one of the plurality of predetermined profiles; means for creating a single data stream encapsulating the data groups adapted to the plurality of predetermined profiles so that each respective client device of the plurality of client devices is able to recover from the single data stream any of the data groups adapted to the at least one of the plurality of predetermined profiles associated with the respective client device; means for transmitting the single data stream to the plurality of client devices; and wherein the plurality of predetermined profiles define hierarchical levels of capabilities of the plurality of client devices and wherein one of the data groups references content of a lowest one of the plurality of predetermined profiles and at least one of the data groups comprises data for enabling modification of the data group referencing the content of the lowest one of the plurality of predetermined profiles so as to obtain other said data groups each referencing one of the plurality of predetermined profiles of a higher level.