Single Audio Input Circuit for Automatic Analog-Digital Routing
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Solution Overview
Problem
Current electronic components require separate connectors or manual switching for analog and digital audio inputs due to impedance and frequency differences, increasing complexity and cost.
Innovation Solution
A system that uses a single audio input connector with high pass and low pass filters, digitizers, and a multiplexer to automatically route analog and digital signals based on frequency, eliminating the need for manual selection and reducing internal circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate connectors are used for analog and digital inputs, then signal reception reliability is improved, but device complexity and cost increase
Solution Approach 1:
The patent implements a universal audio input connector that can receive both analog and digital signals through a single interface. The system uses automatic detection circuitry to identify the signal type and route it appropriately, eliminating the need for separate connectors while maintaining full functionality for both signal types.
Solution Approach 2:
The system employs automatic signal type detection and routing without requiring manual user intervention. The detection circuitry automatically identifies whether an analog or digital signal is present and configures the signal path accordingly, making the system self-serve and eliminating manual switches.
2Measurement precision
If manual switching is used for analog and digital inputs, then signal routing accuracy is improved, but ease of operation deteriorates
Solution Approach 1:
The system automatically detects the signal type and routes it through the appropriate processing path without requiring manual user action. The detection and routing process is fully automated, improving ease of operation while maintaining routing accuracy through dedicated detection and switching circuitry.
Solution Approach 2:
The system performs preliminary detection of the signal type before routing occurs. By detecting whether an analog or digital signal is present beforehand, the system can automatically configure the appropriate signal path, ensuring accurate routing without manual intervention.
3Adaptability or versatility
If duplicate input connectors are provided, then adaptability is improved, but device complexity increases
Solution Approach 1:
The patent implements a single universal audio input connector that supports both analog and digital signal types. This multi-functional interface provides the same adaptability as separate connectors would offer, while significantly reducing device complexity by consolidating multiple functions into one interface.
Solution Approach 2:
The system merges the functionality of separate analog and digital input connectors into a single unified interface. By combining these functions and using automatic detection and routing, the system achieves the same versatility with reduced complexity and fewer physical components.
4Device complexity
If a single connector is used for both analog and digital inputs, then device complexity is reduced, but signal reception reliability deteriorates
Solution Approach 1:
The system uses automatic signal type detection circuitry that continuously monitors the input signal and automatically configures the appropriate reception mode. This self-service approach ensures reliable signal reception for both analog and digital inputs through a single connector without requiring manual configuration.
Solution Approach 2:
The system performs preliminary detection of the signal type before full signal processing begins. This preliminary action allows the system to configure the appropriate reception parameters and routing in advance, ensuring reliable signal reception from the start without compromising quality despite using a single connector.
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 solution reduces noise, physical size, and cost by automating signal selection, improving reliability, and eliminating the need for duplicate cables, while allowing seamless reception of both analog and digital inputs through a single connector.
Implementation Method 1
A high pass filter separates digital signals from an input signal
Implementation Method 2
A low pass filter separates analog signals from the input signal
Implementation Method 3
The separated analog signal is digitized
Data Source
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AI summary
A system and a method are provided for receiving analog and digital audio input via a single audio input connector. The method includes receiving an input signal from a single audio input connector, splitting the received input signal into a first input signal and a second input signal, filtering the first input signal to pass a digital signal, filtering the second input signal to pass an analog signal, digitizing the filtered analog signal, and multiplexing the filtered digital signal and the filtered digitized analog signal.