Semiconductor Storage Device Temperature Adaptation Control
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Solution Overview
Problem
Semiconductor storage devices experience output variations due to temperature fluctuations during continuous operations, leading to inconsistent read data when the same command is performed repeatedly.
Innovation Solution
A semiconductor storage device with a control circuit that adjusts parameters based on temperature measurements, using a previously measured temperature if the current temperature is within a predetermined range, to maintain consistent output results across temperature fluctuations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If temperature-based parameter correction is applied during continuous operations, then device performance adapts to temperature changes, but output consistency deteriorates due to fluctuations in measured temperature
Solution Approach 1:
The patent measures temperature in advance before executing the commanded operation, and uses this pre-measured temperature for parameter correction. This preliminary temperature measurement ensures that the parameter correction is based on a stable temperature value obtained before the operation starts, rather than using fluctuating temperature measurements taken during continuous operations.
Solution Approach 2:
The patent introduces a temperature measurement timing control mechanism that cushions against temperature fluctuations by measuring temperature at specific timing (before operation execution) rather than continuously. This timing control acts as a buffer that prevents rapid temperature changes from directly affecting parameter corrections and output consistency.
2Measurement precision
If temperature measurement is performed continuously, then accurate temperature correction is achieved, but measurement precision deteriorates due to temperature fluctuations during measurement
Solution Approach 1:
The patent performs temperature measurement in advance before the commanded operation is executed. This preliminary measurement captures the temperature state before operational changes occur, ensuring accurate temperature data for parameter correction without being affected by temperature fluctuations that occur during continuous operations.
Solution Approach 2:
The temperature sensor serves itself by measuring temperature at optimal timing (before operation) when temperature is relatively stable. The system uses its own operational timing to determine when temperature measurement should occur, making the measurement process self-regulating and avoiding external interference from continuous operations.
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
Ensures consistent output results by stabilizing read data and voltage adjustments based on temperature corrections, preventing changes in read data due to temperature fluctuations during continuous operations.
Implementation Method 1
acquire a temperature measured by a temperature sensor
Data Source
AI summary
A semiconductor storage device includes a memory cell and a control circuit configured to, upon receipt of a command, acquire a first temperature measured by a temperature sensor, and perform an operation corresponding to the command using a parameter corrected based on temperature. When the first temperature is within a predetermined range with respect to a second temperature measured before the command is received, the parameter is corrected using the second temperature. When the first temperature is outside the predetermined range, the parameter is corrected using the first temperature.