Multi-Transport Stream Packing for Multiple Turbo Broadcast Streams
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Solution Overview
Problem
Current digital broadcasting transmission systems are limited to generating dual transport streams, which include a normal stream and one turbo stream, and cannot efficiently transmit two or more additional turbo streams simultaneously.
Innovation Solution
A multi-transport stream generating apparatus and method that includes an adaptor to generate an adaptation field, a turbo processor to turbo-code multiple turbo streams, and a stuffer to integrate these streams into the normal stream, enabling the transmission of multiple turbo streams by stuffing them into the adaptation field, along with a deinterleaver to deinterleave the multi-transport stream.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a dual transport stream system is used to transmit one normal stream and one turbo stream, then reception performance is improved, but the system cannot transmit two or more additional turbo streams
Solution Approach 1:
The patent embeds multiple turbo streams within the adaptation field of a normal transport stream packet structure. Instead of creating separate independent stream structures, the turbo streams are nested inside the existing TS packet framework, allowing multiple streams to coexist within a single transmission channel without requiring additional independent transmission paths.
Solution Approach 2:
The normal stream's adaptation field, originally designed for single-purpose use, is repurposed to carry multiple turbo streams simultaneously. This multi-functional use of the adaptation field structure allows the system to transmit one normal stream and multiple turbo streams through the same transmission channel, increasing system versatility without proportionally increasing device complexity.
2Productivity
If multiple turbo streams are added to the normal stream, then transmission efficiency is improved, but packet structure management becomes more complex
Solution Approach 1:
The patent divides the adaptation field into multiple segments, each capable of carrying a separate turbo stream. By segmenting the adaptation field structure and assigning specific segments to specific turbo streams, the system can manage multiple streams independently while maintaining overall packet integrity, thus improving transmission efficiency without overwhelming packet structure management complexity.
3Reliability
If turbo streams are processed at the transmission stage, then reception performance is enhanced, but hardware complexity increases
Solution Approach 1:
The patent applies turbo coding and other signal processing operations to multiple streams during the transmission stage before they are combined and transmitted. By performing these processing operations preliminarily at the transmission end rather than requiring complex real-time processing at the reception end, the system enhances reception performance while avoiding a significant increase in reception hardware complexity.
Data Source
AI summary
A multi-transport stream (TS) generating apparatus and method, and digital broadcasting transmission and reception apparatuses and method are provided. The multi-TS generating apparatus includes an adaptor to generate an adaptation field in some packets of a normal stream; an interleaver to interleave the normal stream; a turbo processor to turbo-code a plurality of turbo streams; a stuffer to generate a multi-TS by stuffing the plurality of the turbo streams into the adaptation field; and a deinterleaver to deinterleave the multi-TS. Accordingly, the plurality of the turbo streams can be transmitted far more easily.