Audio Input-Output Module Plug-In Detection Circuit
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing audio devices face challenges in efficiently detecting the connection or disconnection of multiple plug connectors during operation, which is crucial for managing audio and potentially video signals, as users frequently connect or disconnect peripherals while the device is in use.
Innovation Solution
An audio input-output module with a plug-in detection module that utilizes an impedance network and switches to generate a plug-in signal, a reference signal generator to produce a sequence of reference values, and a comparator to determine the state of each plug receptor, allowing for efficient detection of coupled or decoupled connectors, enabling the module to selectively couple audio inputs and outputs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple jacks are equipped for coupling audio input/output signals, then the device can support multiple peripheral connections and signal routing options, but the complexity of detecting connection states of each jack increases
Solution Approach 1:
The patent combines multiple detection functions into a single integrated detection module that handles all jack connection states simultaneously. The module uses a unified impedance network and control logic to monitor multiple jacks, reducing the need for separate detection circuits for each jack and thereby reducing overall system complexity while maintaining support for multiple peripherals.
Solution Approach 2:
The detection module is designed as a universal system that can detect connection states across multiple different jack types and configurations. By implementing a single multi-functional detection mechanism rather than dedicated detection circuits for each jack, the system achieves versatility in handling various peripheral connections without proportionally increasing complexity.
2Ease of operation
If plug connectors are connected or disconnected during operation, then users can dynamically change audio signal routing, but the system must efficiently detect these changes without disrupting ongoing operations
Solution Approach 1:
The system performs preliminary detection by continuously monitoring impedance states at each jack before connection changes affect signal routing. The detection module proactively identifies connection states and prepares the system for upcoming changes, allowing seamless transitions without disrupting ongoing audio operations. This preliminary detection mechanism ensures efficient handling of dynamic connections.
Solution Approach 2:
The detection module implements a feedback mechanism that continuously monitors jack connection states and provides real-time information to the audio signal routing system. This feedback loop enables the system to dynamically adjust signal paths in response to connection changes without interruption, maintaining operational efficiency while supporting flexible user connections during device operation.
Data Source
AI summary
A plug-in detection module includes an impedance network for producing a plug-in signal in response to a supply signal that varies when one of a plurality of plug-in receptors is coupled to a plug connector and when one of the plurality of plug-in receptors is decoupled. A reference signal generator generates a reference signal having a plurality of reference signal values. A comparator generates a detection signal when the plug-in signal compares favorably to the reference signal. A processing module detects which of the plurality of plug-in receptors have a plug connector coupled thereto.