Memory Controller Read Boost Mode Data Copying
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Solution Overview
Problem
Memory systems face challenges in processing read requests efficiently due to the difficulty in predicting usage patterns and requirements from hosts, as they lack knowledge of the properties set by the host and the speed of data storage devices.
Innovation Solution
A memory system and controller that include a first type memory block for storing data and a second type memory block operating at a higher speed, with a control circuit to determine if data can be copied from the first type to the second type block upon receiving a read boost mode command, allowing for faster data processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If data is stored in a first type memory block, then storage capacity is improved, but read speed deteriorates
Solution Approach 1:
The memory device is segmented into multiple memory blocks with different types (first type and second type) having different performance characteristics. The control circuit divides the memory storage into segments that prioritize capacity in some blocks and speed in others, allowing selective access based on read boost mode requirements.
Solution Approach 2:
Different memory blocks are assigned different qualities or characteristics - the first type memory block is optimized for storage capacity while the second type memory block is optimized for read speed. This local differentiation allows the system to provide both high capacity and high speed read performance for specific data.
2Speed
If a second type memory block operating at higher speed is introduced, then read speed is improved, but device complexity increases
Solution Approach 1:
The control circuit is designed to handle multiple functions - it manages both the first type and second type memory blocks, determines when read boost mode is needed, and coordinates data access between different memory block types. This multi-functional control approach manages complexity through integration.
Solution Approach 2:
The patent employs copying of data or control information to manage complexity. The control circuit may copy metadata or access patterns to determine optimal data retrieval paths, and the system can replicate read operations to the faster second type memory block when needed without requiring complete system redesign.
3Speed
If data copying from first type to second type memory block is performed, then read speed is improved, but time consumption increases
Solution Approach 1:
The system performs preliminary determination by the control circuit to assess whether data should be copied to the second type memory block before actual read operations. This preliminary action filters out unnecessary copying operations, ensuring that time is not wasted copying data that will not be accessed or can be read directly from the first type memory block.
Solution Approach 2:
The memory access strategy is dynamic rather than static - the control circuit determines in real-time whether to copy data to the second type memory block based on current read boost mode requirements and access patterns. This dynamic adjustment optimizes the balance between copying time and read speed benefits.
Data Source
AI summary
A memory system, a memory controller, and an operating method of the memory system are provided. The memory system may include a memory device including a first type memory block and a second type memory block and a memory controller configured to determine, when receiving a command to set a read boost mode for the target logical address, whether the data corresponding to the target logical address can be copied from the first type memory block to the second type memory block, and copy the data corresponding to the target logical address from the first type memory block to the second type memory block.