Volatile Register Power Loss Detection for Memory Reset Optimization
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Solution Overview
Problem
Memory systems experience reduced efficiency and performance due to repeated power cycling, which causes wear and tear, and are unaware of power loss events during low-power modes, leading to inappropriate reset operations that increase latency and decrease reliability.
Innovation Solution
Implementing a volatile register to detect power loss by storing data during low-power mode transitions and selecting between hard and soft reset operations based on error detection, thereby optimizing reset operations and reducing wear on the memory system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the memory system performs reset operations after every power mode transition, then the system reliability is improved, but the wear on the memory system increases and latency increases
Solution Approach 1:
The patent applies preliminary action by having the memory system detect and record power loss events during low-power modes before full operation resumes. The system uses a volatile register to store detection results and makes preliminary determinations about whether a hard reset or soft reset is needed, allowing for more intelligent and less wearful reset operations when power is restored.
Solution Approach 2:
The patent implements feedback by having the memory system continuously monitor power loss conditions during low-power modes and use this information to guide subsequent reset operations. The volatile register stores feedback about power loss events, enabling the system to adapt its reset strategy based on actual power loss detection rather than performing blind reset operations.
2Reliability
If the memory system performs hard reset operations to ensure reliability, then the system reliability is improved, but the wake-up latency increases
Solution Approach 1:
The patent applies dynamics by making the reset operation type adaptive rather than fixed. The system dynamically selects between hard reset and soft reset based on real-time power loss detection results stored in the volatile register. When power loss is detected, a hard reset is performed for reliability; when no power loss occurred, a softer, faster reset is used, optimizing both reliability and latency.
3Use of energy by moving object
If the memory system enters low-power modes frequently to conserve energy, then the energy efficiency is improved, but the wear on the memory system increases
Solution Approach 1:
The patent applies self-service by having the memory system autonomously detect power loss conditions and make intelligent decisions about appropriate reset operations without external intervention. The volatile register stores self-monitored power loss information, enabling the system to service itself by performing only the necessary reset operations, thereby reducing unnecessary wear while maintaining reliability.
Data Source
AI summary
Methods, systems, and devices for volatile register to detect power loss are described. The memory system may receive a command to enter a first power mode having a lower power consumption than a second power mode. The memory system may store data in a register associated with the memory system before entering the first power mode (e.g., a low-power mode). The memory system may receive a command to exit the first power mode. The memory system may determine whether the data stored in the register includes one or more errors. The memory system may select a reset operation to perform to exit the first power mode based on determining whether the data stored in the register includes one or more errors.