Audio Interface Dynamic Mode Switching for RF Interference Reduction
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Solution Overview
Problem
Electronic devices experience increased power consumption and electromagnetic interference when communicating digital audio signals via USB, which can degrade RF signal reception sensitivity.
Innovation Solution
The electronic device employs a USB connection with a first signal path for digital audio communication and a second signal path for analog audio communication, allowing it to selectively switch between modes based on the peripheral device's capabilities and power conditions to reduce power consumption and mitigate interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If digital audio signals are transmitted via USB interface, then communication functionality is improved, but power consumption increases
Solution Approach 1:
The patent implements dynamic switching between digital and analog audio communication modes based on operational conditions. The system can transition from USB digital audio mode to analog audio mode when RF operations are required, optimizing power consumption while maintaining communication functionality when needed
Solution Approach 2:
The patent changes the operational parameters of the audio communication interface by switching between digital (USB) and analog modes. This parameter change allows the system to reduce power consumption during RF operations while maintaining the capability for digital audio communication when the USB interface is not interfering with RF signals
2Adaptability or versatility
If digital audio signals are transmitted via USB interface, then audio communication capability is improved, but electromagnetic interference with RF signals increases
Solution Approach 1:
The system dynamically adjusts the audio communication mode based on RF signal conditions. When RF operations are detected or required, the system switches from digital USB audio mode to analog audio mode, thereby reducing electromagnetic interference with RF signals while maintaining audio communication capability
Solution Approach 2:
The patent extracts the audio communication function from the USB digital interface and implements it through a separate analog audio path when RF interference is a concern. This separation allows the USB interface to be disabled or minimized during RF operations, removing the source of electromagnetic interference while preserving audio functionality
Data Source
AI summary
A method and electronic device for communicating audio signals with an audio input/output device is provided. The electronic device includes a USB type connection port, an audio processor configured to support conversion between a digital signal and an analog signal, and at least one processor configured to detect a connection of a peripheral device via the connection port, identify a type of the peripheral device, establish a first signal path for communicating the digital signal with the peripheral device through a first pin and/or a second pin included in the connection port based on whether the peripheral device supports a first mode, or establish a second signal path for communicating the analog signal with the peripheral device through the first pin and/or the second pin included in the connection port based on whether the peripheral device supports a second mode and whether a predetermined condition is satisfied.