AV Synchronization via Timestamped Correction Modules
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Solution Overview
Problem
Existing methods for playing back AV content from distribution sites struggle to synchronize high-quality video and audio data due to differences in delay times during correction processing, making it difficult to achieve seamless playback.
Innovation Solution
An information processing apparatus with a capture module for acquiring video and audio data, a time stamp module for adding time information, an effect module for correcting the data, and an AV synchronization module for synchronizing and outputting the corrected data to ensure synchronized playback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If video data and audio data are corrected to improve picture quality and sound quality, then the quality of playback is improved, but delay time differences occur between video and audio data
Solution Approach 1:
The patent applies preliminary action by adding time stamps to video and audio data before correction processing occurs. This allows the system to pre-calculate and account for potential delay differences that will arise during subsequent correction operations. The time stamp module records the timing of each data packet before it undergoes quality enhancement, enabling the synchronization module to compensate for delays in advance rather than reacting to them afterward.
Solution Approach 2:
The patent implements feedback through its synchronization mechanism that continuously monitors the timing of video and audio data packets. The synchronization module uses the time stamp information to detect delay differences and adjusts the output timing accordingly. This closed-loop feedback system ensures that even as correction processing varies in duration, the final output maintains proper synchronization between video and audio streams.
2Manufacturing precision
If both video data and audio data are acquired and corrected, then playback quality improves, but the complexity of the system increases
Solution Approach 1:
The patent divides the complex task of AV synchronization into distinct functional modules: a capture module for acquiring data, a time stamp module for tracking timing, an effect module for correction processing, and a synchronization module for coordinating output. This segmentation allows each module to handle a specific aspect of the problem independently, making the overall system more manageable and maintainable while achieving high playback quality.
Solution Approach 2:
The patent introduces a time stamp module as an intermediary between the capture module and the effect module. This intermediary component adds timing information to data packets without performing the actual correction or synchronization, thereby simplifying the interfaces between other modules and reducing the complexity of direct interactions between capture, effect, and synchronization components.
3Manufacturing precision
If video data is corrected to improve picture quality, then picture quality improves, but synchronization with audio data becomes difficult
Solution Approach 1:
By adding time stamps to video data before correction processing, the system prepares the necessary timing information in advance. This preliminary action ensures that even as video data undergoes quality enhancement, the synchronization module has the information needed to maintain reliable synchronization with audio data.
Data Source
AI summary
According to one embodiment, an information processing apparatus includes a capture module which acquires video data and audio data output from a first module to a second module, a time stamp module which respectively adds time information to the video data and audio data acquired by the capture module, an effect module which performs correction processing of at least one of the video data and audio data acquired by the capture module, and a synchronization output module which synchronizes and outputs the video data and audio data at least one of which has undergone the correction processing by the effect module to the second module based on the time information added by the time stamp module.