Memory Card Control Apparatus Dynamic Current Adjustment
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Solution Overview
Problem
Conventional memory card control systems face issues with over-current and over-temperature protection, where cutting off power supply to a slot can cause partial system failure and damage, and existing solutions do not effectively manage current without powering down the slot.
Innovation Solution
A memory card control apparatus with a bus, detecting circuit, and adjusting circuit that detects operating status and generates an indication signal to adjust current through the power signal transmission line without cutting off the power, maintaining the status within a predetermined range, and also includes temperature detection to adjust current accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the power supply corresponding to the slot of the memory card is cut off to protect against over-current or over-temperature, then the memory card control system is protected from damage, but the memory card control system loses partial operating functions
Solution Approach 1:
The patent divides the power supply system into multiple independent power signal transmission lines (first power signal transmission line and second power signal transmission line). When over-current or over-temperature is detected, only the power supply to the problematic slot is adjusted through its specific power line, while other slots continue to receive power through their respective lines. This segmentation allows localized protection without affecting the entire system's operation.
Solution Approach 2:
The patent applies different power supply conditions to different slots based on their individual operating status. The first power signal transmission line provides normal power to slots with acceptable operating conditions, while the second power signal transmission line provides reduced or adjusted power to slots experiencing over-current or over-temperature. This local quality approach ensures that protection is applied only where needed, maintaining system functionality elsewhere.
2Temperature
If the current magnitude is reduced to protect against over-temperature, then the temperature status is brought within safe range, but the operating functionality of the slot is degraded
Solution Approach 1:
The patent implements dynamic current adjustment rather than static cutoff. The adjusting circuit continuously monitors the operating status and dynamically modifies the current magnitude through the power signal transmission line. When over-temperature is detected, the current is reduced to a level that brings the temperature within safe range while maintaining sufficient power for basic slot operations. This dynamic approach allows the system to adapt to changing conditions and maintain optimal functionality.
Solution Approach 2:
The patent changes the electrical parameters (current magnitude) of the power signal transmission line based on detected operating conditions. By adjusting the current parameter dynamically, the system can control the temperature status of the slot without completely disabling it. This parameter change approach allows the slot to continue operating at reduced capacity rather than being completely shut down.
Data Source
AI summary
A control apparatus for accessing a memory card includes a bus, a detecting circuit, and an adjusting circuit. The bus is regarded as a signal transmission line between the control apparatus and the memory card. The bus has a power signal transmission line for providing the memory card with a power signal. The detecting circuit detects an operating status of the control apparatus and generates an indication signal when the operating status exceeds a predetermined operating range. The adjusting circuit is coupled to the bus and detecting circuit, and is utilized for adjusting a current passing through the power signal transmission line according to the indication signal without closing the power signal transmission line thereby making the operating status operated within the predetermined operating range.