A driver circuit and electronic device for an audio power amplifier

Abstract

This invention provides a driving circuit and electronic device for an audio power amplifier. The driving circuit includes: an audio codec, an audio power amplifier, a power management integrated circuit, a transistor, a speaker, and a motor. The transistor and motor are connected in series to form an assembly, the speaker and the assembly are connected in parallel to form a two-in-one device, the audio power amplifier and the two-in-one device are connected in series, the power management integrated circuit and the two-in-one device are connected in series, and the audio codec and the audio power amplifier are connected in series. In the technical solution provided by this invention, a single power amplifier drives both the motor and the speaker, saving the need for a separate power amplifier and reducing the power consumption and cost of the electronic device.

Description

[Technical Field]

[0001] This invention relates to the field of acoustics, and more particularly to a driving circuit and electronic device for an audio power amplifier. [Background Technology]

[0002] The driver circuit of an audio power amplifier is an important component of an audio system. Its structure typically uses a multi-stage amplifier to amplify relatively small audio signals, providing a large gain to increase their power. Then, the output stage provides a sufficiently large driving capability to the load to achieve power amplification.

[0003] In the driver circuit of the audio power amplifier, the audio power amplifier processes the audio signal and the motor power amplifier processes the motor signal. The use of two power amplifiers results in higher power consumption and higher cost for the electronic device. [Summary of the Invention]

[0004] In view of this, embodiments of the present invention provide a driving circuit and electronic device for an audio power amplifier, in order to reduce the power consumption and cost of the electronic device.

[0005] On one hand, embodiments of the present invention provide a driving circuit for an audio power amplifier, including: an audio codec, an audio power amplifier, a power management integrated circuit, a transistor, a speaker, and a motor;

[0006] The transistor is connected in series with the motor to form an assembly, the speaker is connected in parallel with the assembly to form a two-in-one device, the audio power amplifier is connected in series with the two-in-one device, the power management integrated circuit is connected in series with the two-in-one device, and the audio codec is connected in series with the audio power amplifier.

[0007] Optionally, the transistor is connected in series with the motor to form an assembly, the speaker is connected in parallel with the assembly to form a two-in-one device, and the power management integrated circuit is connected in series with the two-in-one device, comprising:

[0008] The emitter of the transistor is connected to the motor, the collector of the transistor is connected to the speaker and the audio power amplifier, and the base of the transistor is connected to the power management integrated circuit.

[0009] Optionally, the audio codec includes a digital signal processing module, which is connected to the power management integrated circuit.

[0010] Optionally, the audio power amplifier is used to drive the two-in-one device.

[0011] Optionally, the power management integrated circuit is used to receive a first motor working synchronization signal and a second motor working synchronization signal, and in response to the first motor working synchronization signal and / or the second motor working synchronization signal, send a trigger level signal to the base of the transistor so that the transistor responds to the trigger level signal to turn on.

[0012] Optionally, it may also include: a receiver;

[0013] The receiver is connected in series with the audio codec.

[0014] Optionally, the motor includes an X-axis motor or a Z-axis motor.

[0015] Optionally, the audio codec is used to receive a first voice signal, process the first voice signal to generate a second voice signal, and send the second voice signal to the receiver so that the receiver can operate according to the second voice signal.

[0016] Optionally, the audio codec is used to receive a first motor signal and a first music signal, process the first motor signal and the first music signal to generate a second motor signal and a second music signal, send the second motor signal and the second music signal to the audio power amplifier, the audio power amplifier sends the second motor signal and the second music signal to the two-in-one device, and the two-in-one device operates according to the second motor signal and the second music signal.

[0017] On the other hand, embodiments of the present invention provide an electronic device including the driving circuit of the above-described audio power amplifier.

[0018] In the technical solution provided by this invention, the driving circuit includes: an audio codec, an audio power amplifier, a power management integrated circuit, a transistor, a speaker, and a motor; the transistor and the motor are connected in series to form an assembly, the speaker and the assembly are connected in parallel to form a two-in-one device, the audio power amplifier and the two-in-one device are connected in series, the power management integrated circuit and the two-in-one device are connected in series, and the audio codec and the audio power amplifier are connected in series. In the technical solution provided by this invention, a single power amplifier is used to drive both the motor and the speaker, saving one power amplifier and reducing the power consumption and cost of the electronic device. [Attached Image Description]

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of a driving circuit for an audio power amplifier according to an embodiment of the present invention;

[0021] Figure 2 A schematic diagram of a driving circuit for an audio power amplifier provided in another embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of an electronic device provided in an embodiment of the present invention.

Detailed Implementation Methods

[0023] To better understand the technical solution of the present invention, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0024] It should be understood that the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0025] The terminology used in the embodiments of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms “a,” “the,” and “the” as used in the embodiments of this invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0026] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0027] One embodiment of the present invention provides a driving circuit for an audio power amplifier. Figure 1 This is a schematic diagram of a driving circuit for an audio power amplifier according to an embodiment of the present invention, as shown below. Figure 1As shown, the driving circuit includes: an audio codec 11, an audio power amplifier (PA) 12, a speaker (SPK) 13, a haptic integrated circuit (IC) 14, a motor power amplifier 15, and a motor 16. The audio codec 11 includes a digital signal processing (DSP) module 111.

[0028] Audio codec 11 is connected to audio power amplifier 12, and audio power amplifier 12 is connected to speaker 13. Haptic integrated circuit 14 is connected to motor power amplifier 15, and motor power amplifier 15 is connected to motor 16.

[0029] The audio codec 11 receives a first voice signal and a first music signal, processes the first voice signal and the first music signal to generate a second voice signal and a second music signal, and sends the second voice signal and the second music signal to the audio PA 12. The audio PA 12 drives the speaker 13 to work according to the second voice signal and the second music signal.

[0030] The tactile integrated circuit 14 receives the first motor signal, processes the first motor signal, generates the second motor signal, and sends the second motor signal to the motor PA 15. The motor PA 15 drives the motor 16 to work according to the second motor signal.

[0031] In one embodiment of the present invention, the motor 16 includes an X-axis motor.

[0032] Another embodiment of the present invention provides a driving circuit for an audio power amplifier. Figure 2 A schematic diagram of a driving circuit for an audio power amplifier provided in another embodiment of the present invention is shown below. Figure 2 As shown, the driving circuit includes: an audio codec 21, an audio power amplifier (PA) 22, a power management integrated circuit (PMIC) 24, a transistor 233, a speaker (SPK) 231, and a motor 232.

[0033] Transistor 233 and motor 232 are connected in series to form an assembly. Speaker 231 is connected in parallel with the assembly to form a two-in-one device 23. Audio power amplifier 22 is connected in series with two-in-one device 23. Power management integrated circuit 24 is connected in series with two-in-one device 23. Audio codec 21 is connected in series with audio power amplifier 22.

[0034] Specifically, the emitter of transistor 233 is connected to motor 232, the collector of transistor 233 is connected to speaker 231 and audio power amplifier 22, and the base of transistor 233 is connected to power management integrated circuit 24.

[0035] In one embodiment of the present invention, the audio codec 21 includes a DSP module 211, which is connected to the power management integrated circuit 24.

[0036] In one embodiment of the present invention, the audio power amplifier 22 is used to drive the two-in-one device 23.

[0037] In one embodiment of the present invention, the power management integrated circuit 24 is used to receive a first motor working synchronization signal and a second motor working synchronization signal, and in response to the first motor working synchronization signal and / or the second motor working synchronization signal, sends a trigger level signal to the base of the transistor 233 so that the transistor 233 turns on in response to the trigger level signal.

[0038] In one embodiment of the present invention, the driving circuit further includes a receiver (RCV) 25.

[0039] The receiver 25 is connected in series with the audio codec 21.

[0040] In one embodiment of the present invention, the motor 232 includes an X-axis motor or a Z-axis motor. The operating frequency of the motor 232 is a set frequency range, for example, a set frequency range of + / - 30 Hz around a set frequency F0.

[0041] In one embodiment of the present invention, an audio codec 21 is used to receive a first voice signal, process the first voice signal to generate a second voice signal, and send the second voice signal to a receiver 25 so that the receiver 25 can work according to the second voice signal.

[0042] In one embodiment of the present invention, an audio codec 21 is used to receive a first motor signal and a first music signal, process the first motor signal and the first music signal to generate a second motor signal and a second music signal, and send the second motor signal and the second music signal to an audio power amplifier 22. The audio power amplifier 22 sends the second motor signal and the second music signal to a two-in-one device 23, and the two-in-one device 23 operates according to the second motor signal and the second music signal.

[0043] Specifically, the two-in-one device 23 includes a speaker 231 and a motor 232. The speaker 231 operates according to a second music signal, and the motor 232 operates according to a second motor signal.

[0044] In one embodiment of the present invention, the audio power amplifier 22 can simultaneously drive the speaker 231 and the motor 232.

[0045] In one embodiment of the present invention, the trigger level signal of transistor 233 is controlled by a motor working synchronization signal. This motor working synchronization signal may come from the synthesis of motor signal and music signal (i.e., the first motor working synchronization signal), or it may come from any detection node on the transmission path of the synthesized signal (including algorithm processing hardware processing, such as the second motor working synchronization signal).

[0046] In the technical solution provided by this invention, the driving circuit includes: an audio codec, an audio power amplifier, a power management integrated circuit, a transistor, a speaker, and a motor; the transistor and the motor are connected in series to form an assembly, the speaker and the assembly are connected in parallel to form a two-in-one device, the audio power amplifier and the two-in-one device are connected in series, the power management integrated circuit and the two-in-one device are connected in series, and the audio codec and the audio power amplifier are connected in series. In the technical solution provided by this invention, a single power amplifier is used to drive both the motor and the speaker, saving one power amplifier and reducing the power consumption and cost of the electronic device.

[0047] In one embodiment of the present invention, the driving circuit of the aforementioned audio power amplifier can be applied to electronic devices, simplifying the hardware complexity of the signal transmission path in electronic devices. Electronic devices include mobile phones, tablets, speakers, headphones, wearable devices, etc.

[0048] This invention provides an electronic device including the driving circuit of the aforementioned audio power amplifier.

[0049] Figure 3 This is a schematic diagram of an electronic device provided in an embodiment of the present invention. (See diagram below.) Figure 3 As shown, the electronic device 30 of this embodiment includes: a processor 31, a memory 32, and a computer program 33 stored in the memory 32 and executable on the processor 31.

[0050] Electronic device 30 includes, but is not limited to, a processor 31 and a memory 32. Those skilled in the art will understand that... Figure 3This is merely an example of electronic device 30 and does not constitute a limitation on electronic device 30. It may include more or fewer components than shown, or combine certain components, or different components. For example, electronic device may also include input / output devices, network access devices, buses, etc.

[0051] The processor 31 may be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor.

[0052] The memory 32 can be an internal storage unit of the electronic device 30, such as a hard disk or RAM of the electronic device 30. The memory 32 can also be an external storage device of the electronic device 30, such as a plug-in hard disk, Smart Media Card (SMC), Secure Digital (SD) card, or Flash Card equipped on the electronic device 30. Furthermore, the memory 32 can include both internal and external storage units of the electronic device 30. The memory 32 is used to store computer programs and other programs and data required by the electronic device. The memory 32 can also be used to temporarily store data that has been output or will be output.

[0053] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0054] In the embodiments provided by this invention, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection between devices or units through some interfaces, and may be electrical, mechanical, or other forms.

[0055] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0056] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or in the form of hardware plus software functional units.

[0057] The integrated units implemented as software functional units described above can be stored in a computer-readable storage medium. These software functional units, stored in a storage medium, include several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) or processor to execute some steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0058] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A driving circuit for an audio power amplifier, characterized in that, include: Audio codecs, audio power amplifiers, power management integrated circuits, transistors, speakers, and motors; The transistor is connected in series with the motor to form an assembly, the speaker is connected in parallel with the assembly to form a two-in-one device, the audio power amplifier is connected in series with the two-in-one device, the power management integrated circuit is connected in series with the two-in-one device, and the audio codec is connected in series with the audio power amplifier. The transistor is connected in series with the motor to form an assembly, the speaker is connected in parallel with the assembly to form a two-in-one device, and the power management integrated circuit is connected in series with the two-in-one device, including: The emitter of the transistor is connected to the motor, the collector of the transistor is connected to the speaker and the audio power amplifier, and the base of the transistor is connected to the power management integrated circuit. The power management integrated circuit is used to receive a first motor working synchronization signal and a second motor working synchronization signal, and in response to the first motor working synchronization signal and / or the second motor working synchronization signal, sends a trigger level signal to the base of the transistor so that the transistor responds to the trigger level signal to turn on.

2. The driving circuit according to claim 1, characterized in that, The audio codec includes a digital signal processing module, which is connected to the power management integrated circuit.

3. The driving circuit according to claim 1, characterized in that, The audio power amplifier is used to drive the two-in-one device.

4. The driving circuit according to claim 1, characterized in that, Also includes: receiver; The receiver is connected in series with the audio codec.

5. The driving circuit according to claim 1, characterized in that, The motor includes an X-axis motor or a Z-axis motor.

6. The driving circuit according to claim 4, characterized in that, The audio codec is used to receive a first voice signal, process the first voice signal to generate a second voice signal, and send the second voice signal to the receiver so that the receiver can work according to the second voice signal.

7. The driving circuit according to claim 1, characterized in that, The audio codec is used to receive a first motor signal and a first music signal, process the first motor signal and the first music signal to generate a second motor signal and a second music signal, and send the second motor signal and the second music signal to the audio power amplifier. The audio power amplifier sends the second motor signal and the second music signal to the two-in-one device, and the two-in-one device operates according to the second motor signal and the second music signal.

8. An electronic device, characterized in that, The driving circuit includes the audio power amplifier as described in any one of claims 1-7.

Images