Memory Controller Mapping Information Transfer to Host
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Solution Overview
Problem
Current memory systems face inefficiencies in managing mapping information between logical and physical addresses, leading to reduced responsiveness and performance during read and write operations, as they require repeated initial setting operations to update mapping information.
Innovation Solution
A memory system and controller that transmit mapping information to a host after the first initial setting operation, allowing the host to load and update this information in its memory area dynamically, thereby avoiding the need for repeated initial settings and improving operational efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If mapping information is stored only in the memory system's mapping table, then the memory system can maintain centralized control, but the host experiences delays due to repeated initial setting operations and mapping searches
Solution Approach 1:
The memory controller transmits mapping information to the host in advance after the first initial setting operation, allowing the host to load it into its memory area before actual operations begin. This preliminary action eliminates the need for repeated initial setting operations and mapping searches during subsequent read/write operations, thereby improving speed and reducing time loss.
2Productivity
If the host loads mapping information into its memory area, then operational efficiency improves, but the host must manage and update this information dynamically
Solution Approach 1:
The memory controller monitors changes in the host memory area and automatically transmits updated mapping information to the host when changes are detected. This feedback mechanism allows the host to benefit from improved productivity through local mapping storage while the memory controller handles the complexity of updating, maintaining ease of operation.
3Loss of time
If mapping information is transmitted to the host after initial setting, then the host can perform operations faster, but the memory controller must manage additional communication overhead
Solution Approach 1:
The patent extracts the mapping information from the memory system's internal mapping table and transfers it to the host's memory area. This extraction eliminates the need for the host to perform time-consuming mapping searches during operations. The communication overhead is managed through standardized query commands and response mechanisms already present in the host-memory system interface.
Data Source
AI summary
The memory system is provided to include a memory device, and a memory controller configured to control the memory device. The memory controller is configured to transmit, after the host completes a first initial setting operation for the memory system, mapping information between a logical address and a physical address to a host in order to load the mapping information between the logical address and the physical address into a host memory area located in the host, and to transmit, before the host executes a second initial setting operation for the memory system, to the host, updated mapping information between the logical address and the physical address to update, based on a change made to the host memory area.