Dual Non-Volatile Memory Data Recording Device Thermal Control
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Solution Overview
Problem
Conventional data recording devices face data loss issues when power supply is unexpectedly interrupted, as data not transferred from volatile memory to non-volatile memory is lost.
Innovation Solution
A data recording device with two non-volatile memories, one with faster processing speed than the other, and an access controller that controls data writing based on the temperature of the first non-volatile memory, switching between the two memories to prevent data loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If data is written into volatile memory for fast processing, then processing speed is improved, but data loss occurs when power supply is unexpectedly interrupted
Solution Approach 1:
A temperature sensor is introduced as an intermediary component to monitor the temperature of the non-volatile memory and provide feedback to the controller. This enables the system to dynamically adjust data writing operations based on real-time temperature conditions, preventing data loss while maintaining processing efficiency
Solution Approach 2:
The system dynamically switches between different data writing modes based on real-time temperature monitoring. When temperature is within safe range, data is written directly to non-volatile memory; when temperature exceeds threshold, data is first written to volatile memory. This dynamic adaptation resolves the contradiction between speed and reliability
2Reliability
If data is directly written into non-volatile memory, then data safety is improved, but processing speed deteriorates
Solution Approach 1:
The system dynamically adjusts the data writing path based on real-time temperature conditions. When temperature is within safe range, direct writing to non-volatile memory ensures data safety; when temperature exceeds threshold, writing to volatile memory first maintains processing speed. This dynamic switching resolves the speed-reliability tradeoff
Solution Approach 2:
The data writing process is segmented into two distinct paths: a safe path for normal temperature conditions (direct non-volatile memory writing) and a fast path for high temperature conditions (volatile memory writing). This segmentation allows the system to optimize for either safety or speed based on current thermal conditions
3Reliability
If temperature monitoring and dynamic switching is implemented, then data loss is prevented, but device complexity increases
Solution Approach 1:
A temperature sensor serves as a simple intermediary that provides objective thermal condition feedback to the controller. This single sensor enables the complex dynamic switching behavior without requiring complex sensing or control logic, as the temperature reading directly determines the writing mode
Solution Approach 2:
The system implements feedback control by continuously monitoring temperature and adjusting data writing operations accordingly. The controller receives real-time temperature feedback and automatically switches between writing modes to prevent data loss, creating a self-regulating system that manages complexity through automated response
Data Source
AI summary
A data recording device includes: a non-volatile memory; a high-functional non-volatile memory characterized by a processing speed faster than a processing speed of the non-volatile memory; and an access controller that controls writing of data into each of the non-volatile memory and the high-functional non-volatile memory, based on an indicator related to a temperature of the non-volatile memory. The access controller (a) writes data into the non-volatile memory when the indicator satisfies a first condition, and (b) writes data into the high-functional non-volatile memory and transfers the data from the high-functional non-volatile memory to the non-volatile memory when the indicator satisfies a second condition.