Power-Cut Reset Circuit for Improperly Activated Electronics
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Solution Overview
Problem
Conventional electronic devices are unable to automatically reset peripheral units without dedicated reset pins, such as certain chips, which can lead to system malfunctions due to improper activation.
Innovation Solution
An electronic device with a main circuit system and an external circuit system, including a motherboard, power receiving units, control units, and a timing unit, that automatically cuts off and restores power supply to reset the device when it is improperly activated, using a switch controlled by the second control unit based on activation and power supply state signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a control unit sends reset signals to peripheral units, then system reliability is improved, but this approach cannot reset peripheral units without dedicated reset pins
Solution Approach 1:
The patent introduces a power supply unit as an intermediary to achieve reset functionality. Instead of directly sending reset signals to peripheral units (which lack reset pins), the system controls the power supply to these units. By cutting and restoring power through the power supply unit, the system can reset any peripheral unit regardless of whether it has a dedicated reset pin, thus resolving the contradiction between reliability improvement and reset capability limitation
Solution Approach 2:
The power supply unit is given a dual function: it not only provides power to peripheral units but also serves as a universal reset mechanism. The control unit can deactivate the power supply unit to send a reset signal to any peripheral unit, making the power supply unit a multi-functional component that addresses both power delivery and system reset needs for all peripheral units uniformly
2Reliability
If power supply is continuously monitored, then automatic resetting is achieved, but device complexity increases
Solution Approach 1:
The patent combines the power supply monitoring function with the existing control unit. The control unit both controls the power supply unit and monitors its status. By merging these functions into a single control unit, the patent avoids adding separate monitoring hardware, thus achieving automatic resetting capability while minimizing the increase in device complexity
Solution Approach 2:
The system implements a feedback mechanism where the control unit monitors the status of the power supply unit and peripheral units. Based on this feedback information about system operation status and power supply state, the control unit can automatically make decisions to deactivate or reactivate the power supply unit for resetting purposes, achieving automatic resetting through software/control logic rather than complex hardware circuits
Data Source
AI summary
The present invention is to provide an electronic device capable of automatically resetting, which includes a main circuit system and an external circuit system. The main circuit system is able to send out a power supply state signal according to the voltage thereof and an activation state signal according to whether the main circuit system is properly activated. The external circuit system is able to receive the power supply state signal and the activation state signal, switch a switch between a turned-on state and a turned-off state for automatically cutting off electricity supplied to the main circuit system through the switch while the main circuit system is improperly activated and then supplying electricity to the main circuit system thereafter. Thus, whenever the electronic device is improperly activated, the electricity supplied to the main circuit system can be automatically cut off and then restored to reset the main circuit system automatically.