Memory Storage Device L2P Mapping Table Update
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Solution Overview
Problem
The efficiency of data merging operations in memory storage devices is reduced due to the frequent need to read the same logical to physical mapping table multiple times, leading to decreased system performance.
Innovation Solution
A memory control method that involves collecting valid data from a source unit, generating and updating a second logical to physical mapping table based on the physical address of a recycling unit, and copying data using this updated table to improve data merging efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the same logical to physical mapping table is read multiple times to obtain mapping information during data merging operation, then the data merging operation can be completed, but the execution efficiency of the data merging operation is reduced
Solution Approach 1:
The patent applies preliminary action by copying the logical to physical mapping table corresponding to the source unit to generate a second logical to physical mapping table before the data merging operation. This allows the mapping information to be prepared in advance, eliminating the need to read the same mapping table multiple times during the operation, thus improving execution efficiency and reducing time loss.
2Productivity
If the logical to physical mapping table is copied and updated according to physical address of recycling unit, then the number of reads is reduced and efficiency is improved, but the device complexity increases
Solution Approach 1:
The patent applies copying by creating a second logical to physical mapping table as a copy of the first mapping table corresponding to the source unit. This copy is then updated with mapping information corresponding to the recycling unit. This approach allows efficient access to mapping information without repeatedly reading the original table, improving productivity while managing complexity through systematic table replication and updates.
Data Source
AI summary
A data merging method can copy a new logical to physical mapping table and update a copied logical to physical mapping table according to a physical address of a recycling unit expected to be written at the same time. In this way, the number of times that the same logic to physical mapping table is read multiple times during the data merging operation can be reduced to improve the execution efficiency of the data merging operation, thereby increasing the system performance of the memory storage device.