Non-Volatile Memory Controller Dynamic Power Mode Adaptation
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Solution Overview
Problem
Current non-volatile memory systems are not optimized for specific applications, leading to suboptimal performance in different host access patterns, as they lack adaptive memory management algorithms that account for varying read/write requirements and data integrity needs across different applications.
Innovation Solution
A non-volatile memory system with a controller that operates in standard or low-power standby modes, adjusts delay values based on host command frequency, and profiles host behavior to optimize data transfer and error correction according to the application's needs, using quality of service negotiation and dynamic pattern recognition to enhance performance and power efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the memory system operates in standard mode to execute host commands, then data transfer speed and responsiveness are improved, but power consumption increases
Solution Approach 1:
The memory system dynamically switches between standard mode and low-power standby mode based on host command frequency and access patterns. The controller monitors host behavior and adjusts the memory system's operational state in real-time, transitioning to standby mode during idle periods and returning to standard mode when commands are received, thereby optimizing the balance between speed and power consumption
Solution Approach 2:
The system changes operational parameters by adjusting the delay value that controls transitions to and from low-power standby mode. Based on profiled host access patterns, the controller modifies this delay parameter to optimize performance - shorter delays for frequent access patterns and longer delays for infrequent access, thereby adapting power consumption levels to actual usage requirements
2Productivity
If the memory system uses fixed memory management algorithms, then system simplicity is maintained, but performance optimization for specific applications is lost
Solution Approach 1:
The memory system performs self-optimization by automatically profiling host access patterns and dynamically adjusting memory management algorithms without external intervention. The controller monitors command sequences, identifies patterns, and autonomously configures optimization strategies such as caching policies and data placement, eliminating the need for manual configuration or complex external control mechanisms
Solution Approach 2:
The system implements feedback loops where the controller continuously monitors host command patterns and uses this information to adjust memory management behavior. By analyzing access patterns and feeding this information back into the memory management algorithm selection, the system dynamically optimizes performance for the specific application while maintaining a relatively simple overall architecture
3Use of energy by moving object
If the memory system transitions to low-power standby mode frequently, then power consumption is reduced, but access time increases when commands are received
Solution Approach 1:
The memory system performs preliminary actions by pre-loading data into cache memory based on profiled access patterns before the host actually requests it. By anticipating future access needs through pattern recognition and preparing data in advance, the system reduces the effective access time when commands are received, even while operating in low-power standby mode between commands
Data Source
AI summary
A non-volatile memory system goes into a low-power standby sleep mode to reduce power consumption if a host command is not received within delay period. The duration of this delay period is adjustable. In one set of embodiments, host commands can specify the delay value, the operation types to which it applies, and whether the value is power the current power session or to be used to reset a default value as well. In other aspects, the parameters related to the delay value are kept in a host resettable parameter file. In other embodiments, the memory system monitors the time between host commands and adjusts this delay automatically.