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Solution Overview
Problem
In high-frequency communication systems, conventional relay disconnection methods can cause crosstalk due to parasitic capacitance and mutual induction, leading to incorrect system recognition where devices from different networks are mistakenly identified as part of the same system.
Innovation Solution
The implementation of a device network system that uses filters, such as capacitors or relays, to block recognition signals, ensuring that only devices within the same network receive recognition signals, thereby preventing crosstalk and accurate system recognition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If relay disconnection method is used to separate networks, then system recognition can be performed, but crosstalk occurs due to parasitic capacitance and mutual induction
Solution Approach 1:
The patent introduces a capacitor as an intermediary component connected between the communication lines of different networks. This capacitor acts as a mediator that blocks recognition signals from crossing between networks while allowing communication signals to pass, thereby preventing crosstalk without compromising system recognition accuracy
Solution Approach 2:
The patent changes the electrical parameters of the communication system by introducing a capacitor with specific capacitance value. This parameter change creates a frequency-dependent impedance that blocks low-frequency recognition signals while allowing high-frequency communication signals to pass, resolving the contradiction between network separation and signal integrity
2Speed
If high-frequency communication is used to increase communication speed, then communication efficiency improves, but crosstalk and mutual induction between parallel communication lines increase
Solution Approach 1:
The capacitor serves as a frequency-selective intermediary that enables high-frequency communication while blocking the effects of mutual induction. By placing the capacitor between parallel communication lines, it creates an electrical isolation that prevents mutual induction from causing crosstalk, thus maintaining high communication speed without the harmful effects
Solution Approach 2:
The patent replaces the mechanical relay disconnection method with an electrical field-based solution using a capacitor. This substitution eliminates the physical contact and mechanical switching, providing continuous frequency-selective filtering that prevents mutual induction effects while maintaining high-frequency signal transmission
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach effectively prevents crosstalk and ensures correct system recognition, allowing devices within the same network to communicate while distinguishing them from devices in other networks, enhancing communication reliability and accuracy.
Implementation Method 1
disconnection by a relay according to a conventional method may cause crosstalk in which signals mutually leak due to a parasitic capacitance between contacts of the relay or substrate patterns
Data Source
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AI summary
Means is to be established for appropriately performing system recognition on devices connected to an identical system without recognizing a device of a different system as a device of the identical system in high-frequency communication. In a device network system, an outdoor unit (101) selected from among all outdoor units (101, 102, 103) of a first network (10) performs a recognition process on the outdoor units (102, 103) and indoor units (104, 105, 106) of the first network (10). In the first network (10), communication between individual devices including the outdoor units (101, 102, 103) and the indoor units (104, 105, 106) is performed by using a high frequency, and the recognition process performed by the selected outdoor unit (101) uses a recognition signal having a low frequency.