SSD Charge Refresh via Periodic Power to Prevent Data Loss
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Solution Overview
Problem
Semiconductor structures in solid-state drives (SSDs) are sensitive to temperature changes, leading to data loss due to increased electron escape from lattices, resulting in reduced data retention time and potential startup abnormalities.
Innovation Solution
Incorporating a first power supply unit connected to storage cells in the SSD, which supplies power according to a predetermined policy to maintain charge levels within a preset condition, preventing data loss and abnormalities by ensuring normal electron saving.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the SSD operates at higher temperatures, then the operating range is expanded, but the data retention time is reduced
Solution Approach 1:
The patent applies preliminary action by periodically powering on the storage device before data loss occurs. The control unit monitors charge levels and activates the power supply unit in advance to refresh charges, preventing data loss before it happens. This proactive approach maintains data retention even at elevated temperatures without requiring continuous power consumption.
2Loss of energy
If the SSD is not energized for a long time, then power consumption is reduced, but the stored data becomes invalid due to charge loss
Solution Approach 1:
The patent implements periodic action through the control unit that monitors charge levels and periodically activates the power supply unit at predetermined intervals. This periodic energization maintains charge levels within the storage cells without requiring continuous power consumption, effectively balancing energy savings with data retention. The system wakes up periodically to refresh charges and then returns to low-power mode.
3Duration of action of stationary object
If a power supply unit is continuously activated to maintain charge levels, then data retention is improved, but power consumption increases
Solution Approach 1:
The system uses periodic action by activating the power supply unit only at predetermined intervals rather than continuously. The control unit monitors charge levels and triggers power supply only when necessary, maintaining data retention while minimizing overall power consumption. This periodic activation pattern allows the SSD to balance between energy efficiency and data reliability.
Solution Approach 2:
The patent applies self-service through the control unit that autonomously monitors charge levels and automatically activates the power supply unit when charge levels drop below thresholds. The system serves itself by detecting its own needs and taking corrective action without external intervention, maintaining data retention while optimizing power consumption based on actual charge state requirements.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively prolongs data retention time and prevents startup abnormalities by maintaining charge levels within SSDs, even under varying temperatures, thereby ensuring reliable data storage.
Implementation Method 1
The power supply unit is electrically connected to the storage cells and supplies power to maintain charge levels
Implementation Method 2
Each of the first storage cells performs storage of the first data by means of saving electrons (charges) by a floating-gate transistor
Implementation Method 3
The at least one first storage cell stores first data which are associated with a number of charges within the first storage cell
Data Source
AI summary
A storage device and an information processing method are provided. The storage device has a first power supply unit and at least one first storage cell. The at least one first storage cell stores first data which are associated with a number of charges within the first storage cell. The first power supply unit is electrically connected to the at least one first storage cell. The storage device further has a first control unit configured for controlling the first power supply unit to supply power to the at least one first storage cell according to a predetermined policy, so that the number of charges within the first storage cell satisfies a first preset condition.