Scalable Video Data Segmentation for Reduced Access Latency
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Solution Overview
Problem
Storing motion video data in a scalable format like motion JPEG 2000 on disk drives leads to increased access time and reduced bandwidth due to the need to 'skip around' within data files to access lower bandwidth data, degrading performance in video editing and playback systems.
Innovation Solution
Copying lower bandwidth data into a separate file allows for direct access, reducing latency and improving performance by enabling efficient retrieval and processing of lower resolution or quality video data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If motion video data is stored in a scalable format on disk drives, then data scalability and quality adjustment are improved, but access time increases and bandwidth decreases due to skipping around within data files
Solution Approach 1:
The patent segments the scalable compressed video data into separate files based on quality levels. Each file contains data for a specific quality tier (e.g., high quality, medium quality, low quality), allowing the system to access only the relevant segment without skipping through the entire file. This resolves the contradiction by maintaining scalability while eliminating the time loss associated with file skipping.
Solution Approach 2:
The patent extracts the lower bandwidth data (lower quality video data) from the scalable compressed video data structure and places it in a separate file. This extraction allows the system to retrieve only the necessary data for a given quality level without accessing unnecessary higher quality data, thereby reducing access time while preserving the scalability benefit.
2Adaptability or versatility
If motion video data is stored in a scalable format on disk drives, then data scalability is improved, but system performance degrades due to increased access time and reduced bandwidth
Solution Approach 1:
The patent divides the scalable compressed video data into separate files organized by quality levels. This segmentation allows video editing systems to access only the necessary quality tier without scanning through the entire data structure, thereby maintaining scalability while significantly improving system performance by reducing access time and increasing effective bandwidth.
Solution Approach 2:
The patent extracts lower bandwidth data into separate files, creating a streamlined data architecture where only the required quality level needs to be accessed. This extraction eliminates the performance degradation caused by skipping through unnecessary data, thereby resolving the contradiction between scalability and system performance.
3Adaptability or versatility
If lower bandwidth data is accessed by skipping around within a data file, then data scalability is maintained, but seek and rotational latency increase for each image
Solution Approach 1:
The patent extracts lower bandwidth data from the scalable compressed video data and stores it in a separate file. This extraction eliminates the need to skip around within a single large file, thereby removing seek and rotational latency while preserving the ability to access different quality levels through the separated data files.
Solution Approach 2:
The patent segments the video data by quality level into separate files. This segmentation ensures that accessing lower bandwidth data does not require seeking through the entire file, as each quality tier is isolated in its own file. This resolves the contradiction by maintaining scalability while eliminating seek and rotational latency.
Data Source
AI summary
Accessing only the lower bandwidth data in video data stored in a scalable format requires skipping around within a data file to locate the desired data for a specified progression dimension for each image. This causes seek and rotational latency to occur for each image, increasing access time per image and lowering the available bandwidth for reading motion video from the storage system. Such increases in access time significantly degrade performance of local and shared storage systems, particularly for video editing and other video playback systems used in production, post-production and broadcast operations. To improve the performance of such systems, motion video data stored in a scalable format is processed so as to copy the lower bandwidth data into a separate file. These separate files can be accessed by video editing systems, media management systems and other devices or computer programs that use the lower bandwidth data.