Blu-ray Disc Data Arrangement for Seamless Slide Show Reproduction
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Solution Overview
Problem
Existing data processing methods for Blu-ray discs and DVDs face discontinuity issues during parallel reproduction of image and audio data due to increased jump processing times, particularly in browsable slide shows, where image and audio data are stored separately, leading to delays and potential data discontinuity.
Innovation Solution
A data processing method that determines an allowable jump range and data arrangement for image and audio data clips on a disc, ensuring they are stored within a calculated range to minimize jump time, with specific buffer size calculations for seamless reproduction, allowing for flexible readout rates and preventing data discontinuity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If image data and audio data are stored individually in separate locations on the disc, then data storage organization is improved, but jump processing time increases causing reproduction discontinuity
Solution Approach 1:
The patent pre-calculates and determines the allowable jump range based on system specifications before data recording. This preliminary action enables the system to proactively plan data arrangement strategies that minimize jump processing time, rather than reacting to timing issues during reproduction. The buffer size is also predetermined based on the calculated jump range, ensuring seamless reproduction without real-time adjustments.
Solution Approach 2:
The patent dynamically adjusts data arrangement parameters (such as cluster allocation and file positioning) and buffer size parameters based on the calculated allowable jump range. By changing these parameters optimally within the constraints, the system achieves minimal jump processing time while maintaining the organizational benefits of separate data storage. The readout rate is also adjusted as a parameter to compensate for jump delays.
2Reliability
If jump processing time is reduced by optimizing data arrangement, then reproduction continuity is improved, but data storage flexibility is reduced
Solution Approach 1:
The patent implements dynamic data arrangement within the allowable jump range, allowing the system to adaptively position data clusters based on reproduction requirements. The buffer size and readout rate are also dynamically adjusted during operation. This dynamic approach maintains reproduction continuity while preserving storage flexibility, as data can be reorganized within the calculated constraints without requiring complete rigidity in the storage structure.
3Reliability
If buffer size is increased to prevent data discontinuity during jumps, then reproduction seamlessness is improved, but memory resource consumption increases
Solution Approach 1:
The patent calculates the optimal buffer size as a specific parameter based on the allowable jump range and data readout rate. This parameter optimization ensures that the buffer is large enough to prevent discontinuity during jumps but not excessively large to waste memory resources. The buffer size is determined through mathematical relationships involving jump time, data rate, and safety margins, achieving minimal sufficient buffering.
4Productivity
If alternate reading of image and audio data is performed, then parallel reproduction is enabled, but jump processing occurs more frequently causing discontinuity
Solution Approach 1:
The patent pre-determines the allowable jump range and optimizes data arrangement before parallel reproduction begins. This preliminary preparation allows the alternate reading of image and audio data to proceed with minimized jumps, as the data is strategically positioned within the allowable range. The system accounts for the frequency of jumps in advance and structures data access patterns to reduce unnecessary seeking operations.
Data Source
AI summary
There is provided an apparatus and a method determining a data arrangement that guarantees seamless reproduction even in a case of occurrence of a jump in a browsable slide show. An allowable jump range between an image data clip and an audio data clip required for data reading in the browsable slide show in which a consecutive reproduction processing of a still image and an audio reproduction processing are performed in parallel is determined so as to determine arrangement conditions of data to be stored in an information recording medium on the basis of the determined allowable jump range. This configuration enables the browsable slide show to be carried out as a seamless reproduction processing without any data discontinuity. Furthermore, it becomes possible to provide a plurality of combinations of readout rates of the audio data and image data.