IPTV Service Discovery for Multi-Stream Reception
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Solution Overview
Problem
Conventional broadcasting systems and IPTV systems are limited in that they can only transmit and receive one video stream per service, preventing simultaneous reception of multiple video streams.
Innovation Solution
A method and apparatus for transmitting and receiving digital content services using an IPTV system that employs a service discovery server to provide service discovery information, including access information for multiple video streams, allowing users to select and receive both main and supplementary video streams simultaneously through a hybrid IPTV system utilizing unicast and multicast methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional broadcasting system or IPTV system transmits only one video stream per service, then system complexity is reduced and ease of operation is maintained, but the ability to receive multiple video streams simultaneously is limited
Solution Approach 1:
The service is segmented into multiple video streams (main video stream and supplementary video streams) that can be independently received and processed. Each video stream is treated as a separate entity with its own identification and transmission path, allowing the receiver to selectively obtain multiple streams simultaneously without overwhelming system complexity
Solution Approach 2:
The broadcasting system is enhanced to provide multi-functionality by enabling a single service to include multiple video streams. The system can now serve both traditional single-stream services and new multi-stream services, making it universally applicable to various service types while maintaining backward compatibility
2Adaptability or versatility
If multiple video streams are transmitted separately through separate services, then each stream can be independently managed, but the user cannot simultaneously receive multiple streams under one service
Solution Approach 1:
Multiple video streams (main and supplementary) are merged into a single service structure. The service information includes identification information for all video streams, allowing the receiver to simultaneously obtain multiple streams through one service connection rather than managing separate services, thus simplifying user operation while enabling multi-stream reception
3Adaptability or versatility
If service discovery information includes access information for multiple video streams, then users can select and receive multiple streams, but the amount of data to be transmitted and processed increases
Solution Approach 1:
Service discovery information is segmented into structured components including service information, video stream identification information, and access information. This organized segmentation allows efficient processing and transmission of discovery data while providing comprehensive multi-stream access details, reducing redundant information and optimizing data quantity
Data Source
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AI summary
A method of transmitting/receiving a broadcasting signal and a receiver are disclosed. According to the present invention, one broadcast service can be provided by a plurality of video streams. The receiver receives broadcasting information including a main service, which includes a service trigger information of a supplementary service. So the user can view a combination of several associated video streams or select and view a specific video stream by selecting the supplementary service through the service trigger information. In addition to the video streams, a combination of several audio broadcasting streams or data broadcasting streams can be selected and viewed.