Storage Device Parameter Data Error Protection
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Solution Overview
Problem
Current storage devices lack effective mechanisms for securely setting and changing parameter values related to operations, particularly in the presence of abnormal power changes like Sudden Power Off (SPO), which can lead to unintended parameter changes.
Innovation Solution
Incorporating a memory controller with a parameter data generator and controller that generates parameter data including an error protection field, which includes a setting value return field, parameter change group field, and change data display field to ensure secure storage and change of parameter values, preventing unintended changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If parameter values are stored or changed in the memory device, then the operation flexibility and adaptability of the memory device are improved, but the reliability deteriorates due to unintended parameter changes caused by abnormal power conditions
Solution Approach 1:
The patent applies preliminary action by generating and storing an expected value of the parameter value in the memory device before actual parameter changes occur. This pre-stored expected value serves as a reference for later verification, allowing the system to detect and prevent unintended parameter changes caused by abnormal power conditions before they can cause harm.
Solution Approach 2:
The patent implements feedback by comparing the currently stored parameter value with the pre-stored expected value after power restoration. This feedback mechanism enables the system to detect whether parameter changes occurred during abnormal power conditions and to restore parameters to their correct states, thereby maintaining parameter value integrity while preserving operation flexibility.
2Reliability
If error protection fields are added to parameter data, then the reliability of parameter storage is improved, but the device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the parameter data into distinct fields: the parameter value itself and the expected value field. This segmentation allows the system to maintain separate copies of parameter information, enabling verification and restoration operations without fundamentally redesigning the entire data structure, thus managing complexity while improving reliability.
Solution Approach 2:
The patent uses copying by creating and storing an expected value (a copy of the parameter value) in the memory device. This copy serves as a backup reference that can be used to verify and restore the original parameter value if corruption occurs, providing a simple yet effective reliability mechanism that doesn't require complex error correction codes or redundant systems.
Data Source
AI summary
A storage device having an improved operation speed includes a memory controller for controlling a memory device. The memory controller includes a parameter data generator for generating parameter data for changing a parameter value related to an operation of the memory device, and a parameter controller for outputting the parameter data. The parameter data includes an error protection field associated with the parameter value.