Memory Device Skew Parameter Adaptation
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Solution Overview
Problem
Current memory devices lack the ability to dynamically adjust option parameters based on the skew value, which affects their performance and efficiency, particularly in portable electronic devices where stability and power consumption are critical.
Innovation Solution
A memory device with a memory cell array, a CAM block, and a control logic that measures the skew value during power-on and sets optimal option parameters by selecting and reading CAM data, allowing for adaptive operation based on the measured skew value.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If fixed option parameters are used in memory devices, then device simplicity is maintained, but performance and efficiency cannot be optimized for different operating conditions
Solution Approach 1:
The patent stores multiple sets of option parameters in advance in the storage block, each set corresponding to different skew value ranges. During operation, the parameter determining circuit measures the actual skew value and selects the pre-stored parameter set that matches the measured range, eliminating the need for real-time parameter calculation or complex adaptive algorithms.
Solution Approach 2:
The patent changes discrete parameter sets based on measured skew value ranges. Instead of continuously adjusting parameters, the system divides skew values into distinct ranges (first range, second range, etc.) and switches between corresponding pre-defined parameter sets, simplifying the adaptation mechanism while maintaining performance optimization.
2Productivity
If multiple option parameter sets are stored and selected based on skew value, then performance optimization is achieved, but storage space and circuit complexity increase
Solution Approach 1:
The patent segments the skew value measurement range into multiple discrete intervals (first skew value range, second skew value range, etc.), with each segment associated with a specific option parameter set. This segmentation allows the use of simple range comparison logic instead of complex optimization algorithms, reducing circuit complexity while maintaining the ability to optimize performance for different operating conditions.
Solution Approach 2:
Multiple option parameter sets are pre-stored in the storage block during manufacturing or initialization, eliminating the need for complex real-time parameter generation circuits. The parameter determining circuit only needs to measure skew value and select the appropriate pre-stored set, significantly reducing circuit complexity compared to generating parameters dynamically.
3Use of energy by moving object
If skew measurement and parameter selection are implemented, then power consumption optimization is achieved, but measurement and control circuitry adds complexity
Solution Approach 1:
The patent changes discrete power management parameters (such as operating voltage levels, clock frequency, or memory refresh rates) based on measured skew value ranges. Low skew values indicate stable conditions allowing higher performance modes, while high skew values trigger power-saving modes with reduced parameters, optimizing power consumption without requiring complex real-time power management algorithms.
Solution Approach 2:
Power management parameter sets are pre-configured for different skew value ranges and stored in the storage block. The control logic only needs to measure skew value and retrieve the corresponding pre-configured power parameters, avoiding the complexity of dynamic power optimization calculations while achieving effective power management.
Data Source
AI summary
A memory device includes a memory cell array including a plurality of memory blocks and a storage block storing a plurality of pieces of option parameter information; a parameter determining circuit outputting a parameter information signal by measuring a skew of the memory device; a peripheral circuit performing a read operation on the storage block; and a control logic controlling the peripheral circuit to perform the read operation on a selected piece of option parameter information, among the plurality of pieces of option parameter information, in response to the parameter information signal, and setting an option parameter according to the selected piece of option parameter information.