Mobile Terminal Transceiver for Echo-Free Voice Communication
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Solution Overview
Problem
Conventional mobile terminals require multiple microphones and speakers to avoid echo during voice communication, leading to increased part count and space requirements, especially when switching between normal and speakerphone modes.
Innovation Solution
A mobile terminal design that incorporates a transceiver capable of functioning as both a microphone and a speaker, with a codec and communication controller to manage signal paths and power supply, allowing for reduced part count and space usage by enabling the transceiver to act as a microphone in normal mode and a speaker in speakerphone mode.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a mobile terminal uses a speaker and microphone closely arranged to avoid echo, then voice communication quality is improved, but the number of parts increases and device mounting space is consumed
Solution Approach 1:
The transceiver is designed to perform multiple functions: it acts as a speaker during incoming calls and as a microphone during outgoing calls. This multi-functionality eliminates the need for separate speaker and microphone components, reducing the number of parts while maintaining effective voice communication in both normal and speakerphone modes
Solution Approach 2:
The patent combines the functions of speaker and microphone into a single transceiver component. By merging these two previously separate components into one, the device reduces part count and mounting space requirements while preserving the ability to avoid echo through proper signal path management
2Reliability
If a mobile terminal uses a speaker and microphone closely arranged to avoid echo, then voice communication quality is improved, but device mounting space is consumed
Solution Approach 1:
The transceiver serves dual purposes as both speaker and microphone depending on the call direction, eliminating the need for separate components and thereby reducing the area required for component mounting while maintaining communication quality
Solution Approach 2:
By merging speaker and microphone functions into a single transceiver unit, the patent significantly reduces the space required for component placement, allowing for more compact device design without compromising voice communication performance
3Adaptability or versatility
If additional microphones and speakers are added to support both normal and speakerphone modes, then voice communication versatility is improved, but device complexity increases
Solution Approach 1:
The transceiver dynamically switches between functioning as a microphone and as a speaker based on the communication mode (normal or speakerphone) and call direction. This dynamic adaptability allows a single component to replace multiple static components, maintaining versatility while reducing complexity
Solution Approach 2:
The transceiver is designed as a universal component that can perform both microphone and speaker functions, allowing the device to support multiple communication modes without requiring separate dedicated components for each function
Data Source
AI summary
A device and method process voice communication service. A mobile terminal device of the present disclosure includes a microphone arranged at one end of a body of the device; a speaker arranged close to the microphone; a transceiver arranged at the other end of the body; a codec including a coder connected to the microphone, a decoder connected to the speaker, and a switch of which one node is connected to one of the coder and the decoder selectively and the other node is connected to the transceiver; and a communication controller which controls the switch to establish a path between the coder and the transceiver and enables the speaker in speakerphone mode.