Universal Earphone Jack with Dynamic Switching for Multi-Plug Support
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Solution Overview
Problem
Portable electronic devices are limited in their ability to accommodate different types of earphone plugs, typically only supporting three pin, first type four pin, or second type four pin plugs, lacking flexibility in audio channel and microphone configurations.
Innovation Solution
A portable electronic device with an earphone jack that includes multiple contacts (first to sixth) and a switch system with detecting and controlling terminals, allowing it to adapt to different earphone plug types by connecting contacts appropriately for left and right channels, ground, and microphone points, and using a chipset to determine the plug type and control the switch state for proper audio processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a portable electronic device uses a fixed earphone jack configuration for a specific plug type, then the connection reliability for that plug type is ensured, but the adaptability to different earphone plug types is reduced
Solution Approach 1:
The patent implements dynamic contact switching based on detected plug types. The control unit receives detection signals from different plug configurations and dynamically switches the connection state of contacts through a switch circuit, allowing the same jack to reliably connect to multiple plug types (three-pin, first four-pin, second four-pin) by adjusting contact assignments in real-time
Solution Approach 2:
The earphone jack is designed with universal functionality to accommodate multiple plug types. By incorporating six contacts with configurable switching, the jack can universally support three-pin plugs (left/right channel + ground), first four-pin plugs (left/right channel + microphone + ground), and second four-pin plugs (left/right channel + ground + microphone in different positions), making a single jack serve multiple purposes
2Adaptability or versatility
If the earphone jack has multiple contacts with switching capability, then the adaptability to different plug types is improved, but the device complexity increases
Solution Approach 1:
The system performs self-identification of plug types through the detection unit, which automatically detects which pins are connected when a plug is inserted. The control unit then autonomously determines the appropriate contact switching configuration based on the detected plug type, eliminating the need for manual intervention or complex external control mechanisms
Solution Approach 2:
The patent introduces a detection unit as an intermediary between the physical plug connection and the control system. This detection unit automatically identifies plug types by detecting electrical connections at specific pins and transmits this information to the control unit, which then activates the appropriate switch configuration, simplifying the overall control architecture
Data Source
AI summary
A portable electronic device includes an earphone jack capable of receiving different types of earphone plugs, a switch, a detecting terminal, and a controlling terminal. The switch is connected to the earphone jack, and capable of switching between a first state and a second state. The detecting terminal is connected to the earphone jack by the switch, and capable of detecting the type of the earphone plug received in the earphone jack. The detecting terminal is connected to the earphone jack by the switch, and capable of detecting the type of the earphone plug received in the earphone jack. The controlling terminal is connected to the switch, and switches the switch to either the first state or the second state according to the type of the earphone plug.