Patent ID: 8548000

Claim:
A dual transmission stream generating device comprising: a turbo pre-processor that receives a turbo stream, encodes the turbo stream to obtain an encoded turbo stream, and processes the encoded turbo stream to obtain a processed turbo stream; a turbo packet stuffer that receives a normal stream and the processed turbo stream, segments the processed turbo stream into fragments having a specified size, and generates a dual transmission stream by stuffing the fragments of the processed turbo stream into a specified area of the normal stream; and a transmission adaptor that receives the normal stream, re-packetizes the normal stream to obtain a re-packetized normal stream, and outputs the re-packetized normal stream to the turbo packet stuffer, wherein the turbo packet stuffer receives the re-packetized normal stream as the normal stream, and generates the dual transmission stream by stuffing the fragments of the processed turbo stream into the re-packetized normal stream, wherein the turbo pre-processor performs 1/4 rate conversion for at least one part of the turbo steam.