Hybrid Broadcasting Synchronization via Timing Conversion
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Solution Overview
Problem
Existing methods face challenges in providing augmented broadcasting services that require synchronization between real-time data and augmented content across different transmission networks, as systems and timing information have different purposes and forms in heterogeneous environments, making it difficult to deliver realistic content during real-time broadcasting.
Innovation Solution
An apparatus and method for providing and receiving augmented broadcasting services that include a real-time data provider, an augmented content provider, and a multiplexer for synchronizing real-time data and augmented content metadata, using MPEG-2 transport streams to ensure compatibility with current broadcasting systems, and a synchronizer to align the content for seamless playback on receiving terminals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing methods are used to provide augmented broadcasting service, then real-time data can be transmitted through broadcasting network, but synchronization between real-time data and augmented content cannot be achieved due to different timing information formats in heterogeneous networks
Solution Approach 1:
The patent introduces timing information conversion units (both transmitting and receiving) as intermediary components that convert between different timing information formats (PCR-based broadcasting timing and PTS-based Internet timing). This mediator resolves the format incompatibility between heterogeneous networks, enabling reliable synchronization while maintaining adaptability to different network types.
Solution Approach 2:
The patent changes the timing parameter representation by introducing conversion relationships between PCR (Program Clock Reference) and PTS (Presentation Time Stamp). The receiving terminal calculates PTS values based on PCR values and their difference, transforming the timing parameter format to enable cross-network synchronization while preserving the original network characteristics.
2Quantity of substance
If hybrid broadcasting environment is introduced to overcome transmission bandwidth limitations, then realistic content can be downloaded over Internet, but difficulties arise in synchronizing content on screen due to different system purposes and timing forms
Solution Approach 1:
The patent applies preliminary action by having the transmitting terminal convert timing information to PTS format in advance before transmission. The receiving terminal also performs preliminary conversion of PCR to PTS before content playback. This advance timing preparation ensures that when content is downloaded and played back, synchronization is already established, preventing timing losses.
Solution Approach 2:
The patent implements feedback through the timing information conversion mechanism where the receiving terminal continuously monitors PCR values from the broadcasting stream, calculates corresponding PTS values, and uses these converted timing parameters to control content playback. This closed-loop timing feedback ensures synchronized delivery of large content volumes.
3Productivity
If augmented content is provided through second transmission network, then bandwidth limitations are overcome, but system complexity increases due to need for timing information conversion between different network protocols
Solution Approach 1:
The patent achieves universality by designing timing conversion units that can handle multiple timing formats (PCR and PTS) within the same system. The transmitting and receiving terminals both具备 the capability to convert between different timing information formats, making the system universally compatible with different network types while maintaining a unified synchronization approach, thus managing complexity through standardized multi-functional components.
Data Source
AI summary
An apparatus for providing an augmented broadcasting service and an apparatus for receiving the augmented broadcasting service in a hybrid broadcasting environment. The apparatus for providing the augmented broadcasting service includes: a real-time data provider configured to provide real-time data through a first transmission network; an augmented content provider configured to provide augmented content through a second transmission network, wherein the augmented content is to be synchronized with the real-time data; and a multiplexer configured to multiplex the real-time data, the augmented content metadata and timing information for synchronization between the real-time data and the augmented content metadata, and output resulting data.