Hybrid Broadcasting Synchronization via Timeline Reference Signaling
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Solution Overview
Problem
Current hybrid broadcasting systems face challenges in synchronizing transport streams from broadcasting networks and the Internet, requiring excessive calculation performance and lacking an efficient scheme for combining these streams.
Innovation Solution
An apparatus and method that utilize timeline reference signaling information to synchronize broadcast content streams from different networks, including internal and external timeline references, allowing for efficient processing and transmission of multiplexed data through the same RF signal bandwidth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If transport streams from broadcasting network and Internet are combined in hybrid broadcasting system, then data transmission capability is improved, but synchronization complexity and calculation requirements increase excessively
Solution Approach 1:
The patent segments the synchronization process by introducing separate synchronization entities for broadcast network and Internet streams. Each stream has its own synchronization information (PCR for broadcast, DTS for Internet) that is processed independently before final assembly, reducing the complexity of synchronizing heterogeneous streams.
Solution Approach 2:
The patent introduces timeline reference signaling information as an intermediary mechanism that mediates between broadcast network streams and Internet streams. This intermediary layer provides a common time reference framework that simplifies the synchronization process without requiring complex direct coordination between the two heterogeneous sources.
2Measurement precision
If transport streams are synchronized using traditional methods, then synchronization accuracy is achieved, but calculation performance requirements become excessive
Solution Approach 1:
The patent applies preliminary action by pre-establishing timeline reference information and synchronization parameters before actual stream playback. The broadcast stream provides advance timeline reference that can be used to predict and prepare for synchronization points, reducing real-time calculation requirements while maintaining accuracy.
Solution Approach 2:
The patent changes the synchronization parameters from complex real-time calculations to predefined timeline references and metadata. By using timeline reference signaling information that includes synchronization timestamps and duration data, the system achieves accurate synchronization through parameter lookup and comparison rather than intensive calculation.
3Adaptability or versatility
If broadcast content includes multiple services and data types, then service versatility is improved, but bandwidth requirements increase
Solution Approach 1:
The patent segments broadcast content into different service components (video, audio, data services) that can be transmitted through separate data pipes. This segmentation allows selective transmission of services based on user needs and available bandwidth, reducing overall bandwidth requirements while maintaining service versatility.
Solution Approach 2:
The patent introduces dynamic resource allocation where bandwidth can be dynamically adjusted based on service type, user requirements, and network conditions. The system can dynamically switch between different transmission modes (broadcast network vs. Internet) for different services, optimizing bandwidth usage while maintaining versatility.
Data Source
AI summary
The present invention relates to an apparatus for supporting hybrid broadcasting in a digital broadcasting system. The present invention provides an apparatus for receiving a broadcast content via one or more networks. The apparatus comprises a broadcast network interface for receiving a broadcast stream including a first portion of the broadcast content via a broadcast network; a heterogeneous network interface for receiving a heterogeneous stream including a second portion of the broadcast content via a heterogeneous network; and wherein the broadcast stream further includes timeline reference signaling information containing metadata for synchronizing streams transmitted via the one or more networks, and wherein the timeline reference signaling information includes at least one timeline reference information reconstituting timeline of at least one of the broadcast stream and the heterogeneous stream, a processor for configuring the broadcast content using the broadcast stream and the heterogeneous stream based on the timeline reference signaling information. The present invention is effective in easily synchronizing transport streams transmitted through each of heterogeneous networks.