Subtitle Synchronization Binary Sequence Cross-Correlation
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Solution Overview
Problem
Current methods for checking subtitle synchronization with audio dialogue in audiovisual content are time-consuming and provide an incomplete measure of synchronization, as they only check at random points in time, missing synchronization issues throughout the content's duration.
Innovation Solution
A method and apparatus that access binary sequences indicating the presence or absence of speech and subtitle text at multiple sampling times, comparing these sequences to determine synchronization using statistical and mathematical methods such as phase difference and cross-correlation analysis, providing a comprehensive measure of synchronicity across the entire audiovisual content.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If random point-in-time checks are used to verify subtitle synchronization, then the checking process is simple and quick to perform, but the measurement of synchronization is incomplete and may miss synchronization issues throughout the content
Solution Approach 1:
The patent replaces manual visual inspection with automated computational analysis. Binary sequences representing subtitle and audio timing data are processed using cross-correlation algorithms to objectively measure synchronization, eliminating subjectivity and incompleteness of random sampling while maintaining operational simplicity through automation
Solution Approach 2:
The patent transitions from checking synchronization at discrete random time points to analyzing continuous timing relationships across the entire audiovisual content duration. By comparing binary sequences representing presence/absence of subtitles and audio at multiple time points, the system achieves comprehensive measurement without proportionally increasing complexity
2Measurement precision
If comprehensive synchronization checking is performed across the entire audiovisual content duration, then the measurement accuracy is improved, but the time required to perform the check increases significantly
Solution Approach 1:
The patent extracts only the essential timing information into binary sequences that indicate presence or absence of subtitles and audio at each time point. This extraction reduces the data to its fundamental synchronization-relevant features, enabling rapid cross-correlation computation that achieves comprehensive measurement without processing unnecessary audio or video data
Solution Approach 2:
The patent transforms continuous audio and subtitle timing data into discrete binary sequences. This parameter transformation simplifies the data structure, allowing efficient computational comparison through cross-correlation of binary values, thereby reducing processing time while maintaining measurement accuracy across the full content duration
3Productivity
If manual visual inspection methods are used to check subtitle synchronization, then the equipment and software requirements are minimal, but the checking process is time-consuming and subjective
Solution Approach 1:
The system performs self-verification by automatically comparing its own subtitle timing data against audio timing data using cross-correlation algorithms. This automated self-assessment eliminates the need for manual operator intervention, significantly improving quality control productivity while the computational complexity remains manageable through efficient binary sequence processing
Solution Approach 2:
The patent introduces binary sequences as an intermediary representation between the raw audio/subtitle data and the synchronization measurement. These binary sequences serve as a simplified mediator that captures essential timing information, enabling automated comparison through cross-correlation without requiring complex audio analysis or subjective human judgment
Data Source
AI summary
According to at least one embodiment, a method for determining a level of synchronicity between subtitle text in audiovisual content and speech that would be heard during display of the audiovisual content includes: accessing a first binary sequence, each bit of the first binary sequence indicating whether the speech is provided at a respective sampling time of a plurality of sampling times; and accessing a second binary sequence, each bit of the second binary sequence indicating whether the subtitle text is provided at a respective sampling time of a plurality of sampling times. The method further includes comparing the first binary sequence and the second binary sequence to determine the level of synchronicity between the subtitle text and the speech.