IP Broadcast Metadata for Multi-Mode Service Adaptation
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Solution Overview
Problem
Current digital broadcast systems lack a technical method for transmitting components like video, audio, and subtitles using IP transmission methods, specifically for supporting various service modes, as the method for transmitting a service component via a ROUTE session has not been established.
Innovation Solution
A reception apparatus and method that obtain and utilize first meta data including class information to provide services in multiple modes, allowing connection to component streams based on this information, and a transmission apparatus and method that generate and transmit this meta data to support various service modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If IP transmission method is introduced to digital broadcast, then service flexibility and adaptability are improved, but device complexity increases due to lack of established transmission methods
Solution Approach 1:
The service information data structure is designed to be universal and multi-functional, supporting both traditional broadcast services and IP-based services through a unified metadata framework. The class information field can represent different service types (broadcast, IP, hybrid) without requiring separate processing logic, thereby improving service flexibility while maintaining system simplicity.
Solution Approach 2:
The service information is segmented into structured metadata components including service ID, class information, and delivery mode indicators. This segmentation allows the system to process different service types independently through clear field definitions, reducing the complexity of handling diverse service modes within a unified IP transmission framework.
2Adaptability or versatility
If multiple service modes are supported through class information, then adaptability improves, but information processing complexity increases
Solution Approach 1:
The class information field contains localized quality indicators that specify the delivery mode (broadcast, IP unicast, IP multicast) for each service component. This local quality approach allows the reception apparatus to process only the relevant delivery mode information for each service, rather than handling all possible service modes uniformly, thereby supporting multiple service modes while keeping processing complexity manageable.
Solution Approach 2:
The system uses parameter changes in the class information field to indicate different service modes. By encoding service type information as configurable parameters within the metadata structure, the system can dynamically adapt to different service modes without requiring complex decision logic, simplifying the processing of multi-mode services.
3Measurement precision
If meta data with class information is generated and transmitted, then service identification accuracy improves, but transmission data volume increases
Solution Approach 1:
The essential service identification information is extracted into a compact metadata structure with focused fields (service ID, class information, delivery mode). By taking out only the critical identification parameters rather than transmitting complete service descriptions, the system achieves high service identification accuracy while minimizing the transmission data volume overhead.
Data Source
AI summary
The present technique relates to a reception apparatus, a reception method, a transmission apparatus, and a transmission method capable of supporting various service modes. The reception apparatus obtains first meta data including class information for providing, in multiple modes, a service transmitted via a digital broadcast signal using an IP transmission method, and controls reproduction of a component of the service by processing a stream including the component of the service for each of the multiple modes based on the class information included in the first meta data. The present technique can be applied to, for example, a fixed receiver such as a television receiver, a mobile receiver such as a smartphone, and the like.