Information Recording Medium Data Structure Segmentation
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Solution Overview
Problem
Conventional methods for recording, deleting, and dividing digital broadcasting data on information recording media are inefficient, requiring extensive shifting of data structures and updates, making these processes cumbersome and difficult to execute.
Innovation Solution
The solution involves generating and utilizing first and second class information, where the second class information contains validity and position information for the first class information, allowing for efficient recording, deletion, and division of data by referencing this information, thereby reducing the need for extensive data structure shifts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional data structure methods are used for recording, deleting, and dividing digital broadcasting data, then data can be stored on the information recording medium, but extensive shifting of data structures and updates are required, making these processes cumbersome and difficult to execute
Solution Approach 1:
The patent segments the data structure into multiple tables (program reference information table, program reference group information table, user defined favorite folder information table) with distinct functions. Each table stores specific types of reference information independently, allowing operations on one table without affecting others. This segmentation enables easy recording, deletion, and division of data by operating on individual table entries rather than shifting entire data structures.
Solution Approach 2:
The patent introduces intermediary reference information tables that act as mediators between the actual data and the access points. These tables store reference identifiers that point to actual data locations, allowing the system to modify data structures without direct manipulation of the underlying data. The reference tables serve as intermediaries that simplify operations by decoupling the access structure from the data storage structure.
2Productivity
If playlists are added or deleted in conventional methods, then the contents information can be updated, but operation of shifting backward the item defining table and other information all together is always necessary
Solution Approach 1:
The patent divides the information structure into separate tables (program reference information table, program reference group information table, etc.) that can be independently modified. When playlists are added or deleted, only the relevant table entries need to be updated rather than shifting entire data structures. This segmentation eliminates the time-consuming operation of shifting backward the item defining table and other information.
Solution Approach 2:
The patent uses reference identifiers that act as copies or pointers to actual data locations. When playlists are managed, the system updates these reference copies in the information tables rather than moving the actual data structures. This copying approach allows efficient playlist management without requiring physical shifting of data structures.
3Adaptability or versatility
If the number of playlists increases due to division, then more content organization is possible, but operation of shifting backward the item defining table and other information all together is always necessary
Solution Approach 1:
The patent segments the data management system into independent information tables that can handle multiple playlists without increasing overall structural complexity. Each table manages specific aspects of playlist information, allowing the system to accommodate an increasing number of playlists while maintaining simple, modular table structures that don't require complex shifting operations.
Solution Approach 2:
The patent creates universal information tables that can handle multiple types of content organization (playlists, program references, user favorites) within the same structural framework. These multi-functional tables adapt to increasing numbers of playlists through simple entry addition rather than structural transformation, eliminating the need for complex shifting operations regardless of the number of playlists.
Data Source
AI summary
There is provided an information recording medium that reduces operation of shifting information backward or putting information forward closer together upon recording/deleting/dividing information to facilitate processes of recording/deleting/dividing information. An information recording medium records Programs 1 composed of image data, etc., UPGR 3 that refers to at least a part of the Programs 1, PGRG 5 that refers to the UPGR 3, a PGRM that collectively records the UPGR 3 and reference information thereof, and a PGRGM that collectively records the PGRG 5 and reference information thereof. When recording the UPGR 3, the information recording medium refers to the reference information contained in the PGRM, and when invalid reference information or reference information giving no reference to any UPGR 3 is present, records the UPGR 3 using the reference information. When recording the PGRG 5, the information recording medium refers to the reference information contained in the PGRGM, and when invalid reference information or reference information giving no reference to any PGRG 5 is present, records the PGRG 5 using the reference information.