Mobile Terminal Microphone Switching via Auricle Detection
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Solution Overview
Problem
Mobile terminals require users to identify the correct orientation before answering a call, leading to potential sound distortion due to the microphone's position relative to the sound source, causing communication barriers.
Innovation Solution
A mobile terminal with at least two microphones and a processor that determines the sound source location by acquiring an auricle image, allowing the system to switch between microphones to ensure the closest microphone receives the sound signal, eliminating the need for manual orientation identification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the mobile terminal uses a fixed microphone position (upper or lower end), then the device structure is simple and symmetric, but the user must manually identify the correct orientation before answering a call, otherwise sound distortion occurs
Solution Approach 1:
The patent applies dynamics by making the microphone selection dynamic rather than fixed. The system automatically switches between upper and lower microphones based on real-time detection of the terminal's orientation and sound source location, resolving the contradiction between simple fixed structure and reliable sound quality across different usage scenarios
Solution Approach 2:
The patent implements feedback by using the camera to detect the auricle image and determine terminal orientation, then feeding this information back to the processor to automatically select the appropriate microphone. This closed-loop feedback mechanism eliminates the need for manual orientation identification while ensuring optimal sound quality
2Productivity
If the mobile terminal requires manual orientation identification, then the device structure remains simple, but communication efficiency decreases due to the extra step required before answering
Solution Approach 1:
The patent applies preliminary action by performing automatic orientation detection and microphone selection in advance, before the user needs to answer the call. The camera continuously monitors for the auricle image and the system pre-configures the optimal microphone, eliminating the manual orientation step and improving call answering efficiency without significantly increasing device complexity
Solution Approach 2:
The patent implements self-service by enabling the mobile terminal to automatically detect its own orientation and select the appropriate microphone without user intervention. The system uses its built-in camera and processor to perform these functions autonomously, improving productivity while maintaining relatively simple device structure
Data Source
AI summary
A mobile terminal and a method for the mobile terminal to switch between microphones during a call are disclosed. The mobile terminal includes a sound source determining module, a switching module and at least two microphones, wherein the sound source determining module is configured to determine a sound source location when the mobile terminal is answering an incoming call, and the switching module is configured to switch between the at least two microphones according to the sound source location so as to control at least one of the at least two microphones to act as a primary microphone to receive a first sound signal emitted from the sound source location.