Apparatus to generate a dual transport stream and method...

Details Apparatus to generate a dual transport stream and method... Apparatus to generate a dual transport stream and method...

H - Electricity

04

N

H04N 7/015 (2006.01)

Patent

CA 2625003

An apparatus to generate a dual transport stream including a duplicator that receives a turbo stream and that provides a parity insertion region for the turbo stream, and a multiplexer that receives a normal stream and that multiplexes the turbo stream processed by the duplicator and the normal stream to generate the dual transport stream. The duplicator provides the parity insertion region using a 1/2-rate conversion method or 1/4-rate conversion method. Only the turbo stream is detected prior to the transmission of the dual transport stream, and the parity is inserted into the parity insertion region so that the turbo stream can be robustly processed.

L'invention porte sur un appareil permettant de générer un double flux de transport et comprenant un duplicateur qui reçoit un flux turbo et qui crée une région d'insertion de parité pour ce flux turbo et un multiplexeur qui reçoit un flux normal et qui multiplexe le flux turbo traité par le duplicateur et le flux normal pour générer le double flux de transport. Le duplicateur crée la région d'insertion de parité en utilisant un procédé de conversion 1 sur 2 ou 1 sur 4. Seul le flux turbo est détecté avant la transmission du double flux de transport, et la parité est insérée dans la région d'insertion correspondante de sorte que le flux turbo puisse être traité de manière cohérente.

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