Relay Circuit Power Control for Sub Circuit State Transitions
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Solution Overview
Problem
Existing electronic devices face challenges in efficiently transitioning sub circuits from power saving states due to noise interference in signal propagation, especially when the main and sub circuits are far apart, leading to potential errors and increased costs.
Innovation Solution
The electronic device incorporates a relay circuit with a shorter electrical distance between the main circuit and the relay circuit, allowing the processor to control power supply to the sub circuit through the relay, reducing reliance on direct signal instructions and minimizing noise interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the main circuit directly transmits the return signal to the sub circuit, then the control is simple, but the signal is easily affected by noise when the circuits are far apart
Solution Approach 1:
The patent introduces a power supply circuit as an intermediary component between the main circuit and the sub circuit. The power supply circuit receives control signals from the main circuit and transmits power state changes to the sub circuit, serving as a mediator that avoids direct long-distance signal transmission between the main circuit and sub circuit, thereby reducing noise interference while maintaining control simplicity
2Adaptability or versatility
If the main circuit and sub circuit are placed far apart, then the spatial layout is flexible, but the return signal is easily affected by noise
Solution Approach 1:
The power supply circuit acts as an intermediary that enables flexible spatial layout while protecting against noise. By routing control through the power supply circuit, the system can physically separate the main circuit and sub circuit without exposing the return signal to noise, as the power supply circuit handles the signal transmission in a controlled manner
3Reliability
If noise protection measures are added to the signal transmission, then the signal reliability improves, but the device cost increases
Solution Approach 1:
The power supply circuit is designed to serve multiple functions: it not only supplies power to the sub circuit but also acts as a control signal transmission path. By making the power supply circuit multi-functional, the system achieves noise protection without adding separate dedicated signal transmission paths or additional noise protection components, thereby avoiding cost increase
Data Source
AI summary
An electronic device includes a main circuit including a processor, a sub circuit that transits between a first state and a second state, and a power supply circuit that supplies electric power to the main circuit and the sub circuit. An electrical distance between the main circuit and the power supply circuit is shorter than an electrical distance between the main circuit and the sub circuit. When the processor determines to cause the sub circuit to transit from the second state to the first state, the processor increases electric power supplied from the power supply circuit to the sub circuit. The sub circuit transits from the second state to the first state in response to increase of the electric power supplied from the power supply circuit.