Patent ID: 7675994

Claim:
A transmission system comprising: a first encoder that encodes an input signal into a stream of packets; a packet formatter that is configured to receive the stream of packets and a stream of mode commands to produce a formatted stream of packets, wherein: each mode command indicates an encoding mode associated with at least one packet of the stream of packets, wherein: in a first encoding mode, the packet formatter formats the packets in a standard form in the formatted stream, and in a second encoding mode, the packet formatter formats the packets in a robust form in the formatted stream, the robust form providing a greater error correcting capacity than the standard form; a second encoder that is configured to encode the formatted stream of packets to produce an encoded output stream; a multiplexer that is configured to combine the encoded output stream and indicators of the mode command associated with the formatted stream of packets in the encoded output stream; and a transmitter that is configured to transmit the encoded output stream.