Optical Disc Recorder Buffer Management for Data Integrity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional optical disc recorders face inefficiencies in managing read and write data blocks, leading to suboptimal performance and increased complexity in handling commands and data integrity during recording operations.
Innovation Solution
A buffer management method is introduced, where dedicated write and read buffers are used, allowing for data exchange and integrity enhancement through ECC block preparation, ensuring efficient data handling and recording by triggering specific procedures for write, read, and pre-recording processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single buffer is used for both read and write operations, then device complexity is reduced, but data integrity and performance deteriorate due to data conflicts and management complexity
Solution Approach 1:
The patent divides the single buffer into two separate buffers: a read buffer dedicated to storing read data blocks and a write buffer dedicated to storing write data blocks. This segmentation eliminates data conflicts between read and write operations, ensuring data integrity while maintaining manageable complexity through clear functional separation.
2Manufacturing precision
If data blocks are collected to form complete ECC blocks before recording, then manufacturing precision of data integrity is improved, but loss of time increases due to waiting for complete blocks
Solution Approach 1:
The patent implements a pre-recording procedure that proactively collects and prepares data blocks in the write buffer before the host issues read commands. By performing preliminary data collection and ECC block formation in advance, the system ensures data integrity is maintained while reducing idle time and improving overall recording efficiency.
3Reliability
If the buffer retains data in write loop until all write data blocks are recorded, then data integrity is maintained, but productivity decreases due to buffer occupancy
Solution Approach 1:
The patent enables the buffer to release occupied data blocks after successful recording to the optical disc. This allows the buffer to be reused for new data operations, improving productivity and buffer utilization efficiency while maintaining data integrity through the persistent storage on the disc.
4Speed
If read commands are handled immediately without checking write buffer, then response speed is improved, but data integrity may be compromised by reading outdated data
Solution Approach 1:
The patent implements a feedback mechanism where the read command handling procedure checks the write buffer to determine if updated data blocks are available before fulfilling read requests. This feedback loop ensures that read operations retrieve the most current data, maintaining data consistency and reliability while still providing timely responses.
Data Source
AI summary
A buffer management method is provided. A host issues a read command requesting access for a read data block and a write command requesting recording of a write data block. A write buffer is dedicated to store the write data block. A read buffer is dedicated to store the read data block. The method comprises entering the optical disc recorder into a write loop. During the write loop, the optical disc recorder triggering a write command handling procedure in response to the write command; triggering a read command handling procedure in response to the read command; and triggering a pre-recording procedure to prepare the write data block in the write buffer for recording. Wherein contents between the write buffer and read buffer are exchangeable during the write handling procedure, the read handling procedure or the pre-recording procedure.