Acoustic Terminal Control via Speaker-Microphone Doppler Shift
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Solution Overview
Problem
Conventional terminal control methods involving touch operations on a lit touch screen are cumbersome and inefficient, especially when direct screen interaction is not feasible or power-saving is required.
Innovation Solution
A method using audio signals within a specific frequency range to determine the relative state between a microphone and a speaker, allowing for terminal control operations without physical touch on the screen, by emitting and receiving audio signals to simulate movement and deduce corresponding control actions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If touch operation on a lit touch screen is used for terminal control, then the control function is achieved, but the operation becomes cumbersome and control efficiency decreases
Solution Approach 1:
The patent replaces the mechanical touch operation system with an acoustic wave-based control system. The speaker emits acoustic waves that interact with the microphone to generate control signals, eliminating the need for physical touch screen interaction. This substitution transforms the control mechanism from mechanical contact to acoustic field interaction, resolving the contradiction between ease of operation and control efficiency.
Solution Approach 2:
The patent introduces acoustic waves as an intermediary medium between the user and the terminal control system. Instead of direct touch or complex screen interaction, the user manipulates acoustic waves (through voice or external sound sources) which then mediate the control process by interacting with the microphone-speaker system. This intermediary approach simplifies operation while maintaining or improving control efficiency.
2Ease of operation
If touch screen interaction is required for terminal control, then control functions are accessible, but power consumption increases due to screen lighting
Solution Approach 1:
The patent replaces the optically-based touch screen interaction system with an acoustically-based control system. By using the speaker-microphone acoustic coupling mechanism, the system eliminates the need to light the display screen for control operations. The acoustic waves serve as the primary interaction medium, allowing terminal control without optical display activation, thus significantly reducing power consumption while maintaining operational accessibility.
3Measurement precision
If direct screen contact is used for control, then precise input is achieved, but the method becomes infeasible when direct interaction is not possible
Solution Approach 1:
The patent creates a universal control mechanism that functions across multiple scenarios through acoustic wave interaction. The speaker-microphone system can detect and respond to various acoustic inputs (voice commands, external sound sources, acoustic gestures) without requiring direct physical contact or screen visibility. This multi-functional acoustic interface adapts to different usage contexts (hands-free operation, remote control, visually impaired users) while maintaining input precision through acoustic signal processing.
Solution Approach 2:
The patent uses acoustic waves as a universal intermediary that bridges different interaction scenarios. Whether the user is touching the device, speaking into it, or placing it near other sound sources, the acoustic field serves as a consistent mediation layer that translates various physical actions into control signals. This intermediary approach maintains input precision across diverse scenarios where direct screen contact may not be feasible.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach simplifies terminal control by enabling efficient operation without screen interaction, conserving power, and improving user experience by allowing control through audio-based relative state determination.
Implementation Method 1
a speaker of the first terminal emits an audio signal
Implementation Method 2
a microphone of the second terminal receives the audio signal
Implementation Method 3
determining a moving state between the first terminal and the second terminal according to the audio parameter and the original audio parameter
Data Source
AI summary
A terminal control method, a terminal and a non-transitory computer-readable storage medium are provided. The terminal control method includes: receiving, by a microphone, a detection audio signal emitted from a speaker and having a frequency within a pre-set detection frequency range; acquiring actual audio parameters of the detection audio signal when being received by the microphone, and original audio parameters of the detection audio signal when being emitted from the speaker; determining a relative state between the microphone and the speaker according to the actual audio parameters and the original audio parameters; determining a terminal control operation to be performed, according to the relative state and a pre-set correspondence between relative states and terminal control operations; and performing the determined terminal control operation on a terminal where the microphone is located.