Microphone Supply Interface for Concurrent Power and Data
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Solution Overview
Problem
Existing microphone systems face challenges in accommodating large dynamic frequency ranges with low power consumption, particularly in efficiently processing data and configuring components without interfering with normal data output during calibration or testing.
Innovation Solution
A bidirectional interface component that supplies power and communicates data through a single interface terminal, allowing for concurrent power supply and parameter setting or data communication, enabling efficient configuration, calibration, and testing without interrupting the microphone system's functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If separate data interface is used for configuration and calibration, then data communication is reliable, but power consumption increases and device complexity increases
Solution Approach 1:
The patent combines the power supply function and data communication function into a single interface terminal. The supply terminal receives both the supply signal (power) and data commands concurrently, eliminating the need for separate data interface terminals. This merging reduces the number of interface components and lowers power consumption while maintaining configuration and calibration capabilities.
Solution Approach 2:
The supply terminal is designed to serve multiple functions: it provides power supply to the microphone device and simultaneously transmits data commands for configuration, calibration, and testing. This multi-functional interface reduces device complexity by consolidating what would traditionally require separate dedicated terminals for power and data communication.
2Reliability
If separate data interface is used for configuration, then configuration accuracy is high, but it interrupts normal data output during calibration
Solution Approach 1:
The patent enables continuous operation of the microphone system during configuration and calibration by using the bidirectional supply interface. Normal data output through the data terminal continues uninterrupted while configuration commands are transmitted concurrently through the supply terminal, eliminating operational interruptions that would occur with separate dedicated configuration interfaces.
Solution Approach 2:
The bidirectional supply interface acts as an intermediary channel that carries configuration commands without interfering with the primary data output path. The supply terminal mediates between the external device and internal components, allowing configuration data to be transmitted alongside power supply without disrupting the normal audio data flow through separate terminals.
3Device complexity
If bidirectional interface is used for power and data, then power consumption decreases and device complexity reduces, but signal interference may occur
Solution Approach 1:
The patent segments the interface functions by direction: the supply terminal handles power supply in one direction while receiving data commands bidirectionally. The data terminal handles audio data output separately. This segmentation of functional responsibilities across different terminals reduces signal interference by separating power-related signals from audio data signals, even though the supply terminal handles multiple functions.
Data Source
AI summary
A microphone or a microphone sensor system operates with a sensor interface that receives a supply voltage at a supply terminal. The sensor interface detects a command at the supply terminal based on a change in the supply voltage and communicates the command or data related to the command to a component of the sensor system. The supply terminal is a bidirectional terminal that further communicates data related to the sensor system via the supply terminal.