Single power amplifier-driven signal control system and method

Patent metadata

Field	Value
Publication number	US-12556147-B2
Application number	US-202318330325-A
Country	US
Kind code	B2
Filing date	Jun 6, 2023
Priority date	Mar 31, 2023
Publication date	Feb 17, 2026
Grant date	Feb 17, 2026

Abstract

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.

First claim

What is claimed is:

1 . A single power amplifier-driven signal control system, the signal control system being configured to drive a two-in-one device integrating a first component capable of generating sound and a second component capable of generating vibration; the two-in-one device comprising a first input end for introducing a first signal to the first component and a second input end for introducing a second signal to the second component; and the signal control system comprising:
a signal control module; a power amplifier; and a front-end circuit module; wherein the signal control module is configured to receive an input signal, determine an operating mode required for a current state based on the input signal, and generate an output signal for driving the two-in-one device based on the input signal and the operating mode; wherein the input signal comprises a vibration signal, an audio signal or a combination thereof; and the operating mode comprises single operation of the first component, single operation of the second component, and simultaneous operation of the first component and the second component; the power amplifier is configured to amplify the output signal to obtain an amplified drive signal; and the number of the power amplifier is one; and the front-end circuit module is 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; wherein the signal control module comprises: a function determination sub-module; a signal generation sub-module; and a protection sub-module; wherein the function determination sub-module is configured to determine the operating mode required for the current state according to the input signal, and generate a synergetic operation determination result of the two-in-one device based on the input signal and the operating mode; and the signal generation sub-module is configured to generate the output signal according to the input signal and the synergetic operation determination result; and the protection sub-module is configured for real-time power control and output of the output signal according to a parameter model of the two-in-one device, so as to prevent a power of the output signal from exceeding a maximum operating power of the two-in-one device.

2 . The signal control system of claim 1 , wherein the signal control module further comprises a post-processing sub-module; and the post-processing sub-module is configured to optimize the output signal according to a preset post-processing method and output an optimized output signal when the output signal is an audio signal.

3 . The signal control system of claim 1 , wherein the signal control module further comprises a nonlinear compensation sub-module; and the nonlinear compensation sub-module is configured for nonlinear harmonic compensation and output of the output signal according to a parameter model of the two-in-one device.

4 . The signal control system of claim 1 , wherein the front-end circuit module comprises a high-pass filtering unit and a low-pass filtering unit; the high-pass filtering unit is configured to perform high-pass filtering on the amplified drive signal to obtain a high-frequency signal and load the high-frequency signal to the first component; and the low-pass filtering unit is configured to perform low-pass filtering on the amplified drive signal to obtain a low-frequency signal and load the low-frequency signal to the second component.

5 . The signal control system of claim 4 , wherein the first component is a speaker, and the second component is a vibration motor.

6 . The signal control system of claim 4 , wherein the front-end circuit module comprises a signal source for receiving the amplified drive signal and a capacitor; a positive end of the signal source is connected to a first end of the capacitor; a negative end of the signal source is connected to a second end of the capacitor and ground; the first component is connected in series between the second end of the capacitor and the negative end of the signal source, such that the capacitor is configured as the high-pass filtering unit and to load a high-frequency signal passing through the capacitor to the first component; the capacitor is connected in parallel with the second component, such that the capacitor is configured as the low-pass filtering unit and to load a low-frequency signal blocked by the capacitor to the second component.

7 . A single power signal control method for a single power amplifier-driven two-in-one device, the signal control method being implemented based on the signal control system of claim 1 ; the two-in-one device comprising a speaker having a first input end and a vibration motor having a second input end; and the signal control method comprising:
receiving an audio signal and/or a vibration signal, and generating an output signal for driving the two-in-one device; amplifying the output signal to obtain an amplified drive signal; and loading the amplified drive signal to the speaker and/or the vibration motor through an analog circuit to drive the two-in-one device.

8 . The signal control method of claim 7 , wherein the step of “loading the amplified drive signal to the speaker and/or the vibration motor through an analog circuit” is performed through steps of:
filtering the amplified drive signal, and loading a high-frequency part in the amplified drive signal to the speaker, wherein the high-frequency part has a frequency above a preset cut-off frequency; and/or
loading a low-frequency part in the amplified drive signal to the vibration motor, wherein the low-frequency part has a frequency below the preset cut-off frequency.

Assignees

• Aac Tech Nanjing Co Ltd

Inventors

• Ye Lijian
• Jiang Yuheng

Classifications

• H04R3/04

  for correcting frequency response · CPC title

• H02N2/001 Primary

  Driving devices, e.g. vibrators · CPC title

• H03F3/245 Primary

  with semiconductor devices only · CPC title