Playing Device Audio Output Circuit with Enable Signal Control
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Solution Overview
Problem
Current playing devices cannot simultaneously drive their built-in speakers and external audio devices, limiting user experience by preventing simultaneous output of audio files.
Innovation Solution
A playing device with a headphone interface circuit and a speaker circuit, where both circuits are connected to a sound source output terminal, with enable signals controlling the output to either the speaker or headphone, allowing simultaneous operation of both.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the built-in speaker circuit is activated to output audio, then the speaker can play sound, but the external audio device cannot be driven simultaneously
Solution Approach 1:
The audio output system is segmented into independent speaker circuit and headphone interface circuit, each with dedicated enable signals. This allows independent control of each output path, enabling simultaneous operation without signal interference.
Solution Approach 2:
The system dynamically switches between different output configurations using enable signals. The speaker enable signal and headphone enable signal can be independently controlled, allowing the system to adapt to different usage scenarios (speaker only, headphone only, or both simultaneously).
2Reliability
If the headphone interface circuit is designed to prioritize headphone output, then headphone playback is ensured, but the speaker cannot operate simultaneously
Solution Approach 1:
The audio output system is designed with multi-functionality to support multiple output modes: speaker-only mode, headphone-only mode, and simultaneous speaker-headphone mode. The shared sound source output terminal can serve both circuits concurrently through independent enable control.
Solution Approach 2:
The sound source output terminal acts as an intermediary that can distribute audio signals to both the speaker circuit and headphone interface circuit simultaneously. The enable signals serve as mediators to control signal flow to each output device independently.
3Device complexity
If the speaker circuit and headphone interface circuit share a common sound source output terminal, then circuit simplicity is achieved, but simultaneous driving of both devices is prevented
Solution Approach 1:
The system prepares multiple enable signals in advance (speaker enable signal and headphone enable signal) that can be independently activated. This preliminary control mechanism allows simultaneous driving of both devices without requiring complex real-time signal routing decisions.
Data Source
AI summary
The present disclosure provides a playing device and a playing method based on the playing device. The playing device includes a headphone interface circuit and a speaker circuit. Signal input terminals of the headphone interface circuit and the speaker circuit are directly connected to a sound source output terminal of the playing device. The signal input terminal of the speaker circuit is connected to a first enable signal output terminal when the first enable signal output terminal outputs a matched enable signal, a sound source signal output from the sound source output terminal is played by the speaker circuit. The signal input terminal of the headphone interface circuit is connected to a second enable signal output terminal. When a headphone is inserted and the second enable signal output terminal outputs a matched enable signal, a sound source signal output from the sound source output terminal is played by the headphone.