Memory System Data Type Segmentation Wear Management

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Solution Overview

Problem

Existing memory systems face challenges in improving the durability and reliability of write operations, particularly due to the lack of differentiation in handling read-intensive and write-intensive data types, leading to inefficient data storage and potential wear on memory blocks.

Innovation Solution

A memory system and method that determine the type of data as read-intensive or write-intensive based on command counts and performance characteristics, and strategically write data to specific memory blocks optimized for each type, thereby balancing operations and enhancing durability and reliability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If data is written to memory blocks without differentiation based on data type, then the memory system operates with simple control logic, but the durability and reliability of write operations deteriorates due to uneven wear on memory blocks

Engineering Contradiction:
Improvedurability and reliability of write operationsVSAvoidcontrol logic complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent segments memory blocks into two distinct types: first target memory blocks for read-intensive data and second target memory blocks for write-intensive data. This segmentation allows differentiated write operations that optimize durability for each data type, resolving the contradiction by implementing targeted complexity only where needed for reliability improvement.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent applies local quality by assigning different write operation characteristics to different memory blocks based on data type. Write-intensive data receives enhanced protection and management in second target blocks, while read-intensive data in first target blocks uses standard operations, thus improving overall reliability without uniformly increasing complexity across all memory operations.

Inventive Principle:
Principle #3Local quality

2Reliability

If read-intensive and write-intensive data are stored in the same memory blocks, then the memory system maintains simple storage management, but write operation durability deteriorates due to mixed workload interference

Engineering Contradiction:
Improvewrite operation durabilityVSAvoidstorage management complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent divides the memory system into separate storage zones: first target memory blocks dedicated to read-intensive data and second target memory blocks dedicated to write-intensive data. This physical or logical segmentation isolates workload interference, allowing write-intensive operations to be managed with specialized techniques that improve durability without complicating the management of read-intensive data.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent implements local quality by applying different storage management strategies to different memory blocks based on their designated data type. Second target blocks for write-intensive data receive enhanced wear leveling, error correction, and protection mechanisms, while first target blocks use standard management, thus improving write durability without uniformly increasing management complexity.

Inventive Principle:
Principle #3Local quality

3Reliability

If all memory blocks are used uniformly for data storage, then the memory system achieves maximum storage utilization, but reliability deteriorates due to uneven wear distribution

Engineering Contradiction:
Improvereliability of memory deviceVSAvoiddata type determination complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent performs preliminary action by determining the data type (read-intensive or write-intensive) before writing data to memory blocks. This advance classification allows the system to select appropriate target memory blocks and apply suitable write operations, ensuring optimal durability from the outset without requiring complex real-time adjustments or post-write corrections.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent applies local quality by determining data type characteristics and applying differentiated write operations to specific memory blocks based on that determination. Write-intensive data receives enhanced protection and management in second target blocks, while read-intensive data uses standard operations in first target blocks, thus improving overall reliability with targeted complexity only where needed.

Inventive Principle:
Principle #3Local quality

Data Source

PatentUS11941272B2Memory system and operating method of memory system
Publication Date: 2024.03.26 SK HYNIX INC
  • US11941272B2 patent drawing
  • US11941272B2 patent drawing
  • US11941272B2 patent drawing

AI summary

Embodiments of the present disclosure relate to a memory system and an operating method of the memory system. According to embodiments of the present disclosure, the memory system may, with respect to data stored in the memory device, write the data to a first target memory block or a second target memory block among the plurality of memory blocks according to whether a data type of the data is a read-intensive type or a write-intensive type.