Wireless Audio-Video Synchronization With Adaptive Delay Compensation
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Solution Overview
Problem
Wireless communication between electronic devices can cause a delay in audio signals relative to video signals, leading to a mismatch in multimedia content playback, which degrades the user experience.
Innovation Solution
An electronic device synchronizes audio and video signals based on optimized synchronization parameters, considering user auditory characteristics and providing a user interface for manual adjustment, ensuring accurate timing alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If wireless communication is used to transmit multimedia content between electronic devices, then data exchange capability is improved, but audio signal delay occurs relative to video signal causing synchronization mismatch
Solution Approach 1:
The system performs preliminary identification of synchronization parameters before actual multimedia playback. The electronic device identifies the synchronization parameter based on information about the multimedia content, application, and external device, then pre-calculates the audio delay compensation value to ensure accurate synchronization from the start of playback without requiring real-time adjustment
Solution Approach 2:
The system dynamically adjusts the audio synchronization parameter based on identified characteristics of the multimedia content, application type, and external device. By changing the audio delay compensation parameter according to different content types (e.g., video call vs. movie playback) and device combinations, the system maintains reliable audio-video synchronization across diverse wireless communication scenarios
2Measurement precision
If synchronization parameters are optimized for different multimedia content and external devices, then audio-video synchronization accuracy is improved, but system complexity increases
Solution Approach 1:
The electronic device automatically identifies synchronization parameters by analyzing information about the multimedia content, application, and external device without requiring manual user configuration. The system self-adjusts the audio delay compensation based on the identified parameters, performing the optimization process autonomously to maintain high synchronization accuracy while avoiding the complexity of manual setup procedures
Solution Approach 2:
The system uses feedback from identified information about multimedia content characteristics, application type, and external device performance to automatically adjust synchronization parameters. By implementing a feedback mechanism that continuously monitors playback conditions and adjusts audio delay compensation accordingly, the system achieves high synchronization accuracy without requiring complex manual intervention
3Ease of operation
If a user interface for manual synchronization adjustment is provided, then user control capability is improved, but interface layout complexity increases
Solution Approach 1:
The system extracts only the essential synchronization control functionality into a simple user interface element, separating it from the main multimedia playback interface. By providing a dedicated but minimal synchronization adjustment control that users can access when needed, the system maintains ease of operation for synchronization adjustments while avoiding cluttering the overall interface layout with complex controls
Data Source
AI summary
An electronic device may include a display and at least one processor configured to execute an application, play multimedia content, obtain information associated with playing the multimedia content, identify a synchronization parameter for synchronization, based on the obtained information, output a UI generated based on the obtained information and the synchronization parameter to the display, and synchronize the audio signal and the video signal.