Digital Transmission Device Mode Information Insertion
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Solution Overview
Problem
Current digital broadcast systems face challenges in efficiently transmitting additional robust streams to portable devices, as existing systems lack the capability to identify and process additional data inserted into normal streams, especially in environments with channel interference and mobility.
Innovation Solution
A digital transmission device and method that inserts additional data into a transport stream with mode information in a field sync and/or signaling information channel (SIC), allowing reception devices to process this data by detecting and restoring the mode information for proper operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional robust streams are inserted into normal broadcast streams for portable devices, then reception robustness for mobile devices is improved, but system complexity increases due to the need to identify and process multiple data types
Solution Approach 1:
The patent segments the broadcast stream into distinct components by inserting additional robust streams with unique identifiers into the normal ATSC broadcast stream. The reception system segments and identifies these additional streams using mode information indicators, allowing separate processing of robust and non-robust data portions. This segmentation enables portable devices to selectively process only the robustly-encoded additional streams while ignoring the normal broadcast stream, thereby improving reception robustness without requiring complete system redesign.
Solution Approach 2:
The patent introduces mode information indicators as intermediary elements that facilitate the identification and processing of additional robust streams. These indicators are inserted into the broadcast stream and serve as mediators between the transmitted data and the reception system's processing logic. The mode information indicators enable the reception system to automatically distinguish between normal broadcast data and additional robust data, simplifying the overall system architecture by providing clear delimiters and identification mechanisms rather than requiring complex analysis of the entire stream.
2Adaptability or versatility
If additional data is inserted into transport stream in various forms and places, then data transmission flexibility is improved, but reception processing capability deteriorates without awareness of data characteristics
Solution Approach 1:
The patent applies preliminary action by inserting mode information indicators into the broadcast stream at the transmission stage, before reception occurs. These indicators pre-annotate the stream with metadata describing the characteristics, format, and processing requirements of additional robust data portions. This preliminary tagging enables the reception system to automatically understand and correctly process the additional data without requiring complex real-time analysis, thereby maintaining transmission flexibility while improving ease of reception processing.
Solution Approach 2:
The mode information indicators function as a feedback mechanism from the transmission system to the reception system, providing essential information about the additional robust streams. This feedback loop allows the reception system to adapt its processing based on the characteristics specified in the mode information, such as coding schemes, data locations, and processing priorities. By embedding this feedback information directly in the stream, the system achieves both flexibility in data insertion and ease of processing at reception.
3Productivity
If mode information is inserted into field sync and signaling information channel, then data processing efficiency is improved, but information channel capacity is consumed
Solution Approach 1:
The patent applies local quality by inserting mode information indicators into specific, targeted locations within the broadcast stream structure—particularly into field sync segments and signaling information channels—rather than distributing information uniformly throughout the entire stream. This localized insertion strategy provides processing efficiency benefits where needed (at stream boundaries and control points) while minimizing overall channel capacity consumption. The mode information is placed only in locations where it can most effectively guide reception processing, avoiding redundant information transmission.
Data Source
AI summary
A transmission system to transmit a transport stream (TS) having normal data and additional data, the transmission system including: a stream constructor to generate a TS, and a multiplexer (MUX) to insert information representing the characteristics of additional data in the TS. Therefore, it is possible for a reception system to use the additional data efficiently.