Memory System Transfer-Rate Control to Reduce Controller Heat
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Solution Overview
Problem
The increase in temperature of a memory system due to heat generation by the controller can lead to burns or data damage, necessitating a technique to suppress heat generation.
Innovation Solution
A memory system with a controller that includes a temperature sensor to detect high temperatures, transitioning to a lower transfer rate when the temperature exceeds a threshold, and prohibiting transfer rate changes during high temperatures to reduce heat generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the controller operates at a high speed with high transfer rate, then productivity is improved, but temperature increases causing heat generation
Solution Approach 1:
The patent implements dynamic transfer rate adjustment by monitoring temperature through a temperature sensor and automatically changing the transfer rate between first and second rates based on temperature thresholds. This dynamic adaptation allows the system to optimize productivity while preventing excessive heat generation, resolving the contradiction between high-speed operation and temperature control.
2Temperature
If the transfer rate is reduced to lower temperature, then temperature is controlled, but productivity decreases
Solution Approach 1:
The patent changes the operating parameter (transfer rate) based on temperature conditions. When temperature exceeds a threshold, the transfer rate is changed from a first rate to a second rate. This parameter adaptation allows the system to maintain temperature control while minimizing the impact on productivity through intelligent, condition-based adjustment.
3Temperature
If the controller dynamically changes transfer rate based on temperature, then temperature control is improved, but device complexity increases
Solution Approach 1:
The patent implements a feedback mechanism where a temperature sensor continuously monitors the temperature and provides information to the controller. Based on this feedback, the controller automatically adjusts the transfer rate. This closed-loop feedback system improves temperature control while keeping the complexity manageable through automated decision-making algorithms.
Solution Approach 2:
The controller performs self-monitoring and self-adjustment by using its own temperature sensor to detect temperature conditions and automatically changing the transfer rate without external intervention. This self-service capability improves temperature control while minimizing the need for additional complex control systems.
Data Source
AI summary
According to one embodiment, a host interface circuit includes a physical layer that performs communication with a host, and a protocol control circuit that determines a transfer rate between the physical layer and the host. When a temperature detected by a temperature sensor becomes equal to or higher than a first temperature, the protocol control circuit changes the transfer rate from a first transfer rate to a second transfer rate. The protocol control circuit transitions to a first mode in which a change of the transfer rate based on a first request from the host is prohibited.