Interleaved Video Data Structure for Seamless Path Switching
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Solution Overview
Problem
Current data structures for high-density optical disks, such as Blu-ray ROM, lack effective management of multiple reproduction paths for video data, leading to inefficiencies in data organization and reproduction.
Innovation Solution
A data structure that divides multiple reproduction path video data into interleaving units, each starting and ending with a reproduction path change point, and includes entry point maps for seamless navigation between paths, allowing efficient management and reproduction of video data across different camera angles or versions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple reproduction path video data are stored in separate continuous blocks, then each path can be reproduced independently, but switching between paths causes buffer underflow and requires large buffer sizes
Solution Approach 1:
The patent segments video data from multiple reproduction paths into interleaved units, where each unit contains data from different paths arranged in a specific sequence. This segmentation allows the playback buffer to process smaller chunks of data from each path in an interleaved manner, preventing buffer underflow during path switching without requiring excessively large buffer sizes.
2Ease of operation
If video data for multiple reproduction paths are stored sequentially, then data organization is simple, but path switching cannot be achieved seamlessly
Solution Approach 1:
The patent divides video data into segmented interleaved units, where each unit contains data from multiple reproduction paths in a structured sequence. This segmentation enables seamless path switching while maintaining relatively simple data organization through the use of entry point maps and path management information.
Solution Approach 2:
The patent introduces a new organizational dimension by interleaving data from multiple paths within unified units, rather than storing each path separately in sequential order. This dimensional reorganization allows the playback system to access and switch between paths seamlessly while maintaining efficient data structure.
3Reliability
If buffer size is increased to prevent underflow during path switching, then playback continuity is maintained, but data reproduction efficiency decreases
Solution Approach 1:
By segmenting video data into interleaved units with structured organization, the patent enables the playback buffer to process smaller, more manageable chunks of data from each reproduction path. This segmentation maintains playback continuity during path switching while improving data reproduction efficiency by reducing the overall buffer size requirement and enabling more efficient data access patterns.
4Reliability
If data is organized for seamless path switching, then playback reliability improves, but data structure complexity increases
Solution Approach 1:
The patent segments video data into standardized interleaved units with defined structures, where each unit contains data from multiple reproduction paths. This segmentation approach achieves seamless path switching while controlling data structure complexity through consistent unit formatting and the use of path management information and entry point maps.
Solution Approach 2:
The patent reorganizes data structure by introducing interleaved units that combine multiple paths within a unified dimensional framework. This dimensional approach enables seamless path switching while managing complexity through structured organization and metadata management.
Data Source
AI summary
The recording medium has a data structure for managing reproduction of at least multiple reproduction path video data recorded on the recording medium. The recording medium includes a data area storing at least a portion of the multiple reproduction path video data. The multiple reproduction path video data is divided into one or more interleaving units, and each interleaving unit is associated with one of the reproduction paths. Each interleaving unit starts and ends with a reproduction path change point, and the interleaving units associated with different reproduction paths are interleaved in the data area.