Memory Control Circuit Dynamic Capacity Adjustment
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Solution Overview
Problem
Rewritable non-volatile memory modules in portable devices face lifespan reduction due to damaged physical blocks, leading to insufficient backup units and rendering the devices unusable when a large number of blocks are affected.
Innovation Solution
A memory management method that detects the number of replacement physical units in the module and adjusts the available capacity by associating available physical units as replacement units when the number meets a default condition, thereby prolonging the device's lifespan.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If replacement physical blocks are used to replace damaged physical blocks, then the reliability of the memory module is improved, but the available capacity of the memory module is reduced
Solution Approach 1:
The patent implements dynamic adjustment of available capacity based on the number of replacement physical blocks. When the replacement physical block number meets a default condition (indicating sufficient replacements), the system dynamically reduces available capacity to reserve more blocks for future replacements, thereby maintaining reliability while adapting to actual wear conditions.
Solution Approach 2:
The system changes the available capacity parameter based on the replacement physical block number. By monitoring the count of replacement blocks and comparing it against a default condition, the system adjusts the available capacity parameter between first and second capacity values, optimizing the balance between reliability and usable storage.
2Duration of action of stationary object
If more physical blocks are reserved as backup, then the lifespan of the memory storage device is prolonged, but the available capacity for data storage is reduced
Solution Approach 1:
The patent applies dynamic adjustment by monitoring the replacement physical block number and only reducing available capacity when the replacement count meets the default condition. This dynamic approach ensures that backup blocks are reserved only when necessary, prolonging device lifespan while minimizing impact on available storage capacity.
Solution Approach 2:
The system adjusts the available capacity parameter based on the state of replacement physical blocks. By changing the capacity parameter from first to second capacity based on the replacement block count, the system optimizes the balance between extending device lifespan and maintaining sufficient storage capacity for user data.
Data Source
AI summary
A memory management method, a memory storage device and a memory control circuit unit are provided. The memory management method includes: detecting a replacement physical unit number of a rewritable non-volatile memory module; adjusting an available capacity of the rewritable non-volatile memory module from a first available capacity to a second available capacity if the replacement physical unit number meets a default condition. Therefore, a lifespan of the memory storage device may be prolonged by adjusting the available capacity of the rewritable non-volatile memory module.