Fixed Location Management Information for Finalized Storage Media
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Solution Overview
Problem
In finalized information storage media, such as Blu-ray discs, it becomes difficult to easily find and manage recording management information due to the lack of a clear structure for sequential recording range information and temporary disc management structures, leading to challenges in data reproduction.
Innovation Solution
The method involves rearranging the order of management information structures, specifically positioning a variable-sized sequential recording range information structure following a fixed-sized temporary disc definition structure, and recording this rearranged information in a disc management area, ensuring that the management information can be easily located and accessed during finalization of the media.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If management information structures are stored in a temporary disc management area during recording, then the information storage medium can support incremental recording and defect management, but it becomes difficult to easily find and retrieve the final recording management information after finalization
Solution Approach 1:
The management information is divided into two distinct segments: temporary disc management information stored in the TDMA during recording operations, and final disc management information stored in a dedicated final management information area after finalization. This segmentation allows the system to maintain adaptability for incremental recording while ensuring easy retrieval of final management information through fixed location access.
Solution Approach 2:
The patent performs preliminary organization of management information structures before finalization. The final disc management information is prepared and stored in the dedicated area in advance, with clear structural organization that enables immediate retrieval upon finalization, eliminating the need to search through temporary storage areas later.
2Adaptability or versatility
If a plurality of TDMA areas are allocated on the disc to support sequential recording ranges, then defect management and incremental recording are enabled, but the complexity of managing and locating final management information increases
Solution Approach 1:
The patent extracts the final disc management information from the temporary disc management area and places it in a dedicated final management information area. This extraction separates the temporary, dynamic management needs during recording from the permanent, static management needs after finalization, reducing the complexity of locating and managing final management information despite having multiple TDMA areas for sequential recording.
3Reliability
If the information storage medium is finalized by copying management information from temporary storage, then the medium becomes suitable for reproduction-only use, but without proper structural organization the final management information becomes difficult to locate
Solution Approach 1:
The patent applies local quality by creating a dedicated final management information area with specific structural characteristics optimized for retrieval. This area has a fixed location and organized structure that is fundamentally different from the temporary disc management area, making the final management information easily detectable and accessible while the medium is in reproduction-only mode.
Data Source
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AI summary
A recording and/or reproducing method, a recording and/or reproducing apparatus, and an information storage medium are provided. The method of recording data to an information storage medium includes: according to a change in a method of using the information storage medium, rearranging the order of a first information structure (520) with a variable size and a second information structure (530) with a fixed size, both of which are included in management information of the information storage medium, so that the first information structure (520) with the variable size can be positioned following the second information structure (530) with the fixed size; and recording the rearranged management information on the information storage medium. According to the method and apparatus, recording management information can be found in a fixed location of a finalized information storage medium, thereby allowing the recording management information to be found easily and quickly.