HDMI Audio Video Synchronization via Cloud Time Delay Adjustment
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Solution Overview
Problem
Maintaining audio and video synchronization is problematic during HDMI media playback, as existing technologies struggle to accurately adjust for time delays between audio and video data, leading to suboptimal synchronization performance.
Innovation Solution
A control equipment and cloud server system that includes modules for acquiring, adjusting, and communicating time delay data to synchronize HDMI audio and video data, with automatic detection and adjustment capabilities to ensure synchronization within acceptable performance thresholds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If video processing time is increased for HDMI media playback, then video processing quality is improved, but audio and video synchronization deteriorates
Solution Approach 1:
The system performs preliminary detection of time delay between audio and video data before playback, and pre-adjusts the delay parameters. The cloud server pre-stores time delay data for different playback equipment, allowing the system to proactively synchronize audio and video before the synchronization issue arises during playback.
Solution Approach 2:
The system implements a feedback mechanism where the control equipment detects the actual time delay between audio and video data, compares it with standard values, and automatically adjusts delay parameters based on the detected deviation. The cloud server also receives feedback from multiple control equipments and updates the time delay data in the cloud, creating a continuous improvement loop.
2Reliability
If automatic detection and adjustment of time delay is implemented, then audio and video synchronization is improved, but system complexity increases
Solution Approach 1:
The cloud server acts as an intermediary that centralizes the storage and management of time delay data for various playback equipment. Instead of each control equipment maintaining complex local databases and detection algorithms, the cloud server provides a unified service, reducing local system complexity while enabling automatic synchronization.
Solution Approach 2:
The control equipment automatically detects time delay issues and adjusts synchronization parameters without requiring manual intervention. The system self-calibrates by comparing detected delays with cloud-stored reference data and automatically applies corrections, making the complex synchronization process transparent to users.
3Adaptability or versatility
If time delay data is pre-stored in cloud server for multiple playback equipment, then adaptability to different equipment is improved, but data storage and management complexity increases
Solution Approach 1:
The cloud server provides a universal service that handles time delay data for multiple types of playback equipment through a single platform. The system stores and manages time delay parameters for various equipment categories (TVs, projectors, soundbars, etc.) in a unified database structure, allowing one system to serve multiple equipment types without requiring separate management systems for each.
Data Source
AI summary
A method in control equipment for synchronizing audio and video acquires an identifier of playback equipment. Information as to audio and video formats for the playback equipment is acquired playback and a first time delay data corresponding to the audio data and video data from the cloud server is set according to the identifier, the audio format information and the video format information. A first delay time between the audio data and video data according to the first time delay data acquired from the cloud server is set for the implementation of audio and video synchronization.