Single-Amplifier Signal Control for Speaker and Vibration Integration
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Solution Overview
Problem
Existing two-in-one devices integrating components like speakers and motors lack distinct control methods, leading to inefficient space utilization and increased manufacturing costs due to lack of independent component control.
Innovation Solution
A single power amplifier-driven signal control system that includes a signal control module, power amplifier, and front-end circuit module to separately drive components like speakers and vibration motors, utilizing filtering units to manage high and low-frequency signals, and a method to generate and optimize output signals based on input modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple separate power amplifiers are used to drive different components independently, then component control precision is improved, but device complexity and space occupation increase
Solution Approach 1:
The patent segments the signal processing function by introducing a signal control module that separates different component control paths before they converge to the single power amplifier. This allows independent signal processing for each component while sharing the power amplification stage, resolving the contradiction between control precision and device complexity.
Solution Approach 2:
The single power amplifier is designed to perform multiple functions by receiving different processed signals from the signal control module for different components. This multi-functional design reduces the number of power amplifiers needed while maintaining independent control capability through the signal control module.
2Adaptability or versatility
If more components are integrated in the two-in-one device, then space utilization is improved, but control system complexity increases
Solution Approach 1:
The signal control module acts as an intermediary between the control system and the integrated components. It manages the complex control signals for multiple components (speaker, vibration motor, noise cancellation mic) and processes them appropriately before sending to the power amplifier, thereby simplifying the overall control system architecture while supporting component integration.
3Device complexity
If a single power amplifier is used to drive multiple components, then device complexity is reduced, but signal control precision deteriorates
Solution Approach 1:
The signal control module segments the control signals for different components before they are combined and amplified by the single power amplifier. Each component receives appropriately processed signals through dedicated signal paths within the control module, maintaining signal control precision while using a shared power amplifier.
Solution Approach 2:
The signal control module dynamically processes signals based on the operating mode (single component or simultaneous operation of multiple components). It adjusts signal processing parameters and routing in real-time to maintain optimal control precision for the current operational state, whether driving the speaker, vibration motor, or both together.
Data Source
AI summary
A single power amplifier-driven signal control system for driving a two-in-one device integrating a first component capable of generating sound and a second component capable of generating vibration, where the two-in-one device includes a first input end and a second input end for introducing a signal respectively to the first component and the second component. The signal control system includes a signal control module, configured to determine an operating mode required for a current state based on an input signal, and generate an output signal for driving the two-in-one device based on the input signal and operating mode; a power amplifier, configured to amplify the output signal to obtain an amplified drive signal; and a front-end circuit module, configured to load the amplified drive signal to the first input end and/or the second input end to drive the first component and/or the second component to operate.