Media Playback Modules for Low-Latency Audio-Video Synchronization
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Solution Overview
Problem
Media playback devices experience delays in responding to user operations due to the time required for audio-to-video synchronization, particularly when switching channels or programs.
Innovation Solution
Implementing independent audio-to-video synchronization control architecture with dedicated playback processing modules for each media source, each module having its own timing information, allowing for background synchronization and reduced hardware resource usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If a single shared audio-to-video synchronization control architecture is used, then hardware resource usage is reduced, but response delay increases when switching channels or programs
Solution Approach 1:
The patent divides the single shared synchronization control architecture into multiple independent playback processing modules, each dedicated to a specific media source. Each module has its own audio-to-video synchronization control unit and timing information, allowing parallel processing of multiple media sources without mutual interference. This segmentation enables immediate response to channel switching operations while maintaining audio-video synchronization for each source independently.
2Productivity
If dedicated playback processing modules are established for each media source, then synchronization efficiency improves and response delay reduces, but hardware resource consumption increases
Solution Approach 1:
The patent designs each playback processing module with a universal architecture that can handle multiple media sources through dynamic configuration. The modules share common functional components and can be activated/deactivated based on the number of active media sources, allowing the system to scale hardware resource usage according to actual needs while maintaining high synchronization efficiency when multiple sources are simultaneously processed.
3Measurement precision
If independent timing information is maintained for each playback processing module, then audio-to-video synchronization accuracy improves, but system complexity increases
Solution Approach 1:
The patent creates independent copies of timing information structures for each playback processing module, allowing each module to maintain its own precise timing state without interference from other modules. This copying approach ensures that each media source has dedicated timing resources for accurate audio-video synchronization, while the modular design keeps system complexity manageable through standardized interfaces and independent operation of each copied timing subsystem.
Data Source
AI summary
A media playback method includes: establishing one or more playback processing modules respectively corresponding to one or more media sources; utilizing an audio and video control sub-module of at least one playback processing module in the one or more playback processing modules to provide and update timing information; and controlling timing synchronization of the at least one playback processing module when processing a plurality of audio data units and a plurality of video data units according to the timing information.