Memory Controller Map Update Segmentation
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Solution Overview
Problem
Current memory controllers face inefficiencies in map update performance, particularly in managing logical to physical address mappings, which affects data storage and retrieval operations in memory devices.
Innovation Solution
A memory controller with a map data manager and storage system that performs map updates by utilizing physical to logical map data, allowing for efficient flushing and updating of map data segments based on the amount of data stored, thereby improving map update performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the memory controller updates L2P map data by reading and writing entire map data segments, then the map update operation can be completed, but the map update performance is degraded due to unnecessary data transfer and processing
Solution Approach 1:
The patent divides the L2P map data into multiple segments (first L2P map data segment and second L2P map data segment) and processes them separately. The controller identifies and updates only the specific segment that needs modification rather than processing the entire map data, thereby reducing unnecessary data transfer and improving update performance.
Solution Approach 2:
The patent extracts and processes only the necessary portion of the map data for updating. By identifying the specific L2P map data segment that requires update and separating it from the rest of the map data, the controller performs operations only on the extracted relevant portion, reducing overall processing time and resource consumption.
2Reliability
If the memory controller stores complete P2L map data for all logical addresses, then address mapping information is comprehensive, but the memory resources are consumed inefficiently
Solution Approach 1:
The patent segments the P2L map data storage into multiple portions corresponding to different logical address ranges. Instead of loading all map data into memory simultaneously, the controller divides the storage into manageable segments that can be loaded and processed in smaller batches, reducing peak memory resource consumption while maintaining complete address mapping coverage.
Data Source
AI summary
The present technology relates to an electronic device. A memory controller according to the present technology has improved map update performance. The memory controller controls a memory device that stores logical to physical map data indicating a mapping relationship between a logical address and a physical address of data. The memory controller includes a map data storage and a map data manager. The map data storage stores physical to logical (P2L) map data generated based on a logical address corresponding to a request received from a host. The map data manager performs a map update operation for the L2P map data by using some of an entire P2L map data stored in the map data storage, according to an amount of the P2L map data stored in the map data storage.