Integrated Drive Signal Generation for Two-in-One Audio Vibration Devices
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Solution Overview
Problem
Existing two-in-one devices integrating speakers and motors require separate connections for audio and vibration signals, which hinders space reduction in terminal equipment.
Innovation Solution
A system comprising an audio signal pre-processing module, a vibration signal generation module, a signal synthesis module, and an amplitude-limiting control module to generate a drive signal that can drive both sound and vibration components of a two-in-one device, allowing for superposition of audio and vibration signals to reduce connection requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate connections are used for audio and vibration signals in two-in-one devices, then the drive functions of both components are maintained, but the space occupation and connection complexity increase
Solution Approach 1:
The patent combines separate audio signal and vibration signal connections into a single integrated drive signal. The signal generation module synthesizes both signal types through one connection interface, eliminating the need for separate double-ended connections while maintaining the drive functions of both the speaker and motor components.
Solution Approach 2:
The integrated drive signal connection is designed to serve multiple functions simultaneously - it carries both audio drive signals for the speaker and vibration drive signals for the motor through a single connection channel. This universal connection approach reduces the number of connection interfaces required in the two-in-one device.
2Reliability
If separate connections are used for audio and vibration signals, then component drive independence is maintained, but space utilization decreases
Solution Approach 1:
The patent merges the physical connection paths for audio and vibration signals into a single integrated connection. By combining these separate signal pathways into one unified interface, the patent reduces the space required for connection terminals and routing while maintaining the functional independence of driving both components through the integrated signal structure.
3Area of stationary object
If a single integrated drive signal is generated, then space utilization and connection requirements are reduced, but signal amplitude control complexity increases
Solution Approach 1:
The patent incorporates an amplitude-limiting control module that monitors the integrated drive signal and provides feedback control. This module detects when the combined audio and vibration signals exceed maximum allowable amplitudes and automatically attenuates the appropriate signal components, enabling automatic control of signal levels without requiring complex manual intervention.
Solution Approach 2:
The amplitude-limiting control module dynamically adjusts the attenuation levels of audio and vibration signals based on real-time signal conditions. When the combined signal exceeds thresholds, the module dynamically reduces amplitude of one or both signal types, providing adaptive control that responds to changing operational conditions within the integrated drive signal.
Data Source
AI summary
This application provides a system for generating a drive signal and a method for generating a drive signal for driving a two-in-one device integrating a first component capable of generating sound and a second component capable of generating vibration. The system includes an audio signal pre-processing module, configured to perform low-frequency filtering and acoustic effect processing on an input signal according to a high-pass filtering parameter to obtain an audio signal; a vibration signal generation module, configured to generate a vibration signal based on an acoustic characteristic of the audio signal or a preset vibration library; a signal synthesis module, configured to superpose the audio signal with the vibration signal to output the drive signal; and an amplitude-limiting control module, configured to determine whether the audio signal and the vibration signal exceeds a maximum allowable range when superposed, and attenuate the audio signal and/or the vibration signal.