Patent ID: 7243285
Filing Date: 2007-07-10
Classification: H03M,H04L,H04N

Abstract:
1. A broadcast system, comprising: one or more information additive code transmitters configured to broadcast output symbols generated from information additive codes to a plurality of information additive code receivers, each information additive code transmitter comprising an encoder configured to receive source data and to produce the output symbols therefrom, wherein the information additive code is such that a number of possible output symbols can be independent of a number of input symbols derived from the source data; and the plurality of information additive code receivers configured to receive the output symbols broadcast by the one or more information additive code transmitters, each information additive code receiver comprising a decoder configured to substantially reconstruct a copy of the source data from the received output symbols; wherein the output symbols transmitted to the plurality of information additive code receivers at any particular time is independent of the output symbols previously received by each of the plurality of information additive code receivers, wherein when an amount of non-redundant output symbols sufficient to reconstruct the source data has been received at each of the plurality of information additive code receivers, the plurality of information additive code receivers reconstruct the source data independent of when, and from which of the one or more information additive code transmitters the output symbols were received.