Temperature tracking for memory systems

By establishing a temperature tracking table in the memory system, the problem of data reliability being affected by temperature in non-volatile memory devices is solved, achieving efficient temperature management and data compensation, and improving the accuracy and efficiency of data reading.

CN114816900BActive Publication Date: 2026-05-26MICRON TECHNOLOGY INC
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Patent Information

Application Number
CN202210048866.4
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Priority Date
2021-01-20
Filing Date
2022-01-17
Publication Date
2026-05-26
Estimated Expiration
2042-01-17

AI Technical Summary

Technical Problem

Existing technologies struggle to efficiently track and manage the impact of temperature on data reliability in non-volatile memory devices, leading to reduced reliability when data is written at non-nominal temperatures, and inefficient and prone-to-failure metadata storage methods.

Method used

Reliability can be improved by establishing a temperature tracking table in the memory system, recording the temperature range of each partition, and checking the temperature range when reading data, and performing temperature compensation, selective garbage collection, or data relocation.

Benefits of technology

It achieves efficient tracking and management of data reliability in the memory system, reduces resource consumption, improves the accuracy and efficiency of data reading, supports blind copy operation, and avoids insufficient metadata storage.

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Abstract

This application relates to temperature tracking for a memory system. A set of temperature ranges and a set of partitions in the memory system can be stored. Each temperature range in the set of temperature ranges can be mapped to one or more corresponding partitions in the set of partitions in the memory system. A command to read a partition in the set of partitions can be received. It can then be determined whether temperature data associated with the set of temperature ranges for the partition indicates that data is written to the partition outside a threshold temperature. Data can then be read from the partition based on whether the determined temperature data associated with the set of temperature ranges indicates that the data is written to the partition outside the threshold temperature.
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Citation Information

Patent Citations

  • Temperature variation compensation

    US20180293029A1

  • NAND temperature data management

    US20190066792A1

  • Preemptive mitigation of cross-temperature effects in a non-volatile memory (NVM)

    US20200411110A1