Blu-ray Data Structure with Byte-Unit Control Fields
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Solution Overview
Problem
Current Blu-ray disc specifications lack unified menu information, hindering the development of full-scale optical record players that can efficiently reproduce high-density data.
Innovation Solution
A data structure for recording media, including an address unit with multiple recording unit address fields and a control information field identified by byte units, is implemented to facilitate data recording and retrieval on Blu-ray discs, enabling efficient data management and error correction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If unified menu information specifications are added to Blu-ray disc standards, then the adaptability and versatility of optical record players improve, but the device complexity and difficulty of establishing complete specifications increase
Solution Approach 1:
The menu information is segmented into distinct data fields including address unit (20 bytes), control information field (16 bytes with byte-unit identification), and extension field. This segmentation allows systematic management of menu data while maintaining standardized structures that improve adaptability without proportionally increasing overall system complexity.
Solution Approach 2:
The patent introduces specific parameter changes by defining precise data structures with fixed field lengths and byte-unit identification. The control information field uses byte-unit identification with specific bit allocations (e.g., 4 bits for recording status, 4 bits for error correction status) which standardizes parameter representation and improves versatility across different optical record players.
2Manufacturing precision
If detailed control information fields with byte-unit identification are implemented, then the manufacturing precision and reliability of data recording improve, but the device complexity increases
Solution Approach 1:
The data structure is divided into clearly defined segments: address unit (20 bytes), control information field (16 bytes), and extension field. Each segment has specific functions and fixed lengths, which improves manufacturing precision by eliminating ambiguity in data recording while keeping the overall structure manageable through systematic organization.
Solution Approach 2:
Different portions of the data structure have specialized local qualities - the address unit handles location information, the control information field handles status and attribute information with byte-unit identification, and the extension field handles additional data. This local specialization improves precision for each function without requiring the entire system to be overly complex.
3Reliability
If systematic file management and error correction are implemented, then the reliability of data retrieval improves, but the loss of time for data processing increases
Solution Approach 1:
Error correction codes and file management structures are pre-calculated and embedded in the data structure during the recording phase. The control information field includes pre-determined status bits and attribute information that enable rapid verification during retrieval without requiring complex real-time processing, thus improving reliability while minimizing time loss.
Solution Approach 2:
The patent replaces complex mechanical or procedural error checking with systematic mathematical error correction codes and structured data fields. This substitution allows automated, high-speed processing of error correction and file management during data retrieval, improving reliability while reducing the time penalty compared to manual or mechanical verification methods.
Data Source
AI summary
The present invention provides a data structure recorded in a recording medium, data recording method and data recording apparatus, in which data are recorded in a high-density recording medium such as a Blu-ray disc. In recording data per cluster within a recording medium, a data structure recorded in the recording system is characterized in that the data includes an address unit in which a plurality of per recording unit address fields included in a corresponding cluster and a control information field indicating per recording unit attribute are recorded and in that each information configuring the control information field is identified by byte unit.