Broadcast Signal Transmission Layering for Data Efficiency
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Solution Overview
Problem
Current digital broadcast systems face challenges in providing high-definition images, multi-channel audio, and additional services due to limitations in data transmission efficiency, network robustness, and mobility, particularly in transmitting and receiving large amounts of data efficiently and flexibly.
Innovation Solution
A broadcast signal transmission processing method that generates first and second layer data units, including signaling data and broadcast data, with the second layer data units containing information for channel scan and acquisition, destination IP addresses, UDP port numbers, and transport type information, enabling flexible transmission and robustness through MIMO systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If digital broadcast systems transmit large amounts of data for high definition images and multi-channel audio, then service quality is improved, but data transmission efficiency and network robustness deteriorate
Solution Approach 1:
The patent segments broadcast data into multiple layers: first layer data units containing broadcast data and second layer data units containing signaling data. This segmentation allows efficient transmission of large amounts of data while maintaining network robustness through hierarchical organization and selective transmission of critical signaling information.
Solution Approach 2:
The patent introduces a new dimensional structure by adding second layer signaling data that provides channel scan and acquisition information. This additional dimension enables mobile receiving apparatuses to efficiently acquire and scan channels without overwhelming the transmission bandwidth, thus improving data transmission efficiency while maintaining service quality.
2Quantity of substance
If digital broadcast systems provide high definition images and multi-channel audio, then service quality is improved, but network robustness deteriorates
Solution Approach 1:
The patent includes second level signaling data that provides advance information for channel scan and acquisition before actual data transmission begins. This preliminary action enables receiving apparatuses to prepare and acquire channel information in advance, improving network robustness by ensuring smooth data reception without interruptions.
Solution Approach 2:
The patent implements feedback mechanisms through signaling data that provides information about transport sessions, destination IP addresses, and channel characteristics. This feedback allows the system to adapt to network conditions and maintain robustness even when transmitting large amounts of data for high definition services.
3Adaptability or versatility
If digital broadcast systems transmit broadcast services, then service versatility is improved, but device complexity increases
Solution Approach 1:
The patent creates a universal broadcast signal transmission structure where the same layered data unit framework can support multiple services. The first and second layer data units can accommodate various broadcast services with different data amounts and requirements, improving service versatility while managing device complexity through a standardized processing approach.
Solution Approach 2:
The patent uses parameter changes in the signaling data to adapt the transmission system for different services. By modifying parameters such as destination IP addresses, UDP port numbers, and transport session information in the second layer signaling data, the system can provide versatile services without increasing fundamental device complexity.
4Loss of time
If broadcast signal transmission includes multiple data layers with signaling information, then service acquisition speed is improved, but transmission processing time increases
Solution Approach 1:
The patent extracts critical signaling information into separate second layer data units that can be processed independently. By taking out essential channel scan and acquisition information from the main data stream, the system enables faster service acquisition without significantly increasing overall transmission processing time, as the signaling data can be parsed and processed in parallel.
Data Source
AI summary
A method of processing data in a digital receiving apparatus, the method including receiving a broadcast signal including low level signaling data, wherein the low level signaling data is carried via a specific data pipe (DP), wherein the low level signaling data includes service category information, the service category information is used to identify an AV service, an audio only service or an ESG (electronic service guide) service, wherein the low level signaling data is used to provide bootstrap information that allows the receiving apparatus to discover at least one service layer signaling information, wherein the bootstrap information includes URL data for a first service layer signaling information when the first service layer signaling information is transmitted via a broadband network, and wherein the bootstrap information includes a destination user datagram protocol (UDP) port number and a destination internet protocol (IP) address for a second service layer signaling information when the second service layer signaling information is transmitted via a broadcast network; and parsing the low level signaling data included in the broadcast signal, wherein the low level signaling data is parsed, and then the first service layer signaling information or the second service layer signaling information is processed.