Dual Transport Stream Broadcasting with H.264 Turbo Compression
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional digital broadcasting systems using dual transport streams with MPEG-2 compression for both normal and turbo streams face decreased compression performance and image quality, leading to increased load on transmission systems and operating expenses.
Innovation Solution
A digital broadcasting transmitter that compresses normal streams in the MPEG-2 format and turbo streams in the H.264 format, using RS encoding, interleaving, and multiplexing to form a dual transport stream, which is then robustly processed for improved transmission efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional MPEG-2 compression is used for both normal and turbo streams in dual transport stream, then transmission compatibility is maintained, but compression performance and image quality are considerably decreased
Solution Approach 1:
The patent applies different compression formats to different stream types: MPEG-2 for normal streams and H.264 for turbo streams. This local differentiation allows each stream to use the most appropriate compression format for its specific requirements, thereby improving overall compression performance and image quality while maintaining compatibility where needed.
Solution Approach 2:
The dual transport stream is segmented into normal streams and turbo streams, with each segment processed using optimized compression formats. Normal streams use MPEG-2 for compatibility, while turbo streams use H.264 for superior compression, allowing the system to address different transmission requirements separately.
2Stability of the object's composition
If conventional MPEG-2 compression is used for turbo stream, then format consistency is maintained, but transmission system load and operating expenses are increased
Solution Approach 1:
The patent changes the compression format parameter for turbo streams from MPEG-2 to H.264. This parameter change results in significantly improved compression efficiency, reducing the bit rate required for turbo streams and thereby decreasing transmission system load and operating expenses while maintaining format consistency through standardized H.264 implementation.
3Reliability
If dual transport stream with turbo stream is implemented, then transmission robustness is improved, but compression performance deteriorates when using conventional formats
Solution Approach 1:
The patent optimizes compression performance specifically for turbo streams by applying H.264 compression format, while maintaining MPEG-2 for normal streams. This localized optimization ensures that the robustness-enhancing turbo stream achieves superior compression performance, thereby improving overall transmission efficiency without compromising reliability.
Data Source
AI summary
A digital broadcasting transmitter, a turbo stream processing method thereof, and a digital broadcasting system having the same. The digital broadcasting transmitter includes a first compressor, forming a normal stream by compressing audio and video signals in a first compression format, a second compressor, forming a turbo stream by compressing the audio and video signals in a second compression format, a transport stream (TS) constructor, compressing the turbo stream in an H.264 format and forming the dual transfer stream by multiplexing the normal stream and the turbo stream, and a TS processor, robustly processing the dual transfer stream transmitted from the TS constructor, thus enhancing the transmission efficiency.