PC (Personal Computer) single-interface USB (Universal Serial Bus) portable active sound

Abstract

The invention relates to the technical field of audio hardware, and discloses a single-interface USB (Universal Serial Bus) portable active sound box for a PC (Personal Computer). Comprising a power amplifier board, a loudspeaker, a USB male head and a USB sound card, the USB male head is in communication connection and electrical connection with the USB sound card, the USB male head is further electrically connected with the power amplifier board, the USB sound card is in communication connection with a power amplifier, the power amplifier board is in communication connection and electrical connection with the loudspeaker, and the USB male head receives audio data from a computer and transmits the audio data to a storage unit; and the storage unit receives and stores the audio data, so that the problem that the existing active sound equipment is inconvenient to install is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of audio hardware, and in particular to an active speaker. Background Art

[0002] The active speakers on the PC side receive audio signals through a 3.5mm interface, and then amplify the audio signals through an amplifier integrated circuit to achieve external audio playback.

[0003] In some specific scenarios, the site does not support the installation of active speakers or there is no active speaker on site, but audio equipment is needed. The existing active speakers cannot be installed in a short time to meet people's needs due to reasons such as size, weight and audio line length. Summary of the invention

[0004] The invention provides a PC single-interface USB portable active speaker to solve the problem of inconvenient installation of the existing active speakers.

[0005] In order to achieve the above object, the present invention is implemented by the following technical solutions: The present invention provides a PC single-interface USB portable active audio system, comprising: a power amplifier board and an external speaker, and also comprising a USB male head and a USB sound card, wherein the USB male head is communicatively connected and electrically connected to the USB sound card, the USB male head is also electrically connected to the power amplifier board, the USB sound card is communicatively connected to the power amplifier board, and the power amplifier board is communicatively connected and electrically connected to the external speaker; The USB male connector is used to receive audio data from a computer and transmit it to a storage unit; The storage unit is used to receive audio data transmitted from the USB male connector and store the audio data.

[0006] Furthermore, the storage unit is integrated into a USB sound card or a power amplifier board.

[0007] Furthermore, the positive terminal of the USB male connector is connected to the positive power supply electrode of the power amplifier board, and the negative terminal is connected to the negative power supply electrode of the power amplifier board.

[0008] Furthermore, the USB sound card is communicatively connected to the power amplifier board via an audio line.

[0009] Furthermore, the power amplifier board is communicatively connected and electrically connected to the external speaker via a power amplifier circuit.

[0010] Furthermore, it also includes a shell, the USB sound card, the power amplifier board and the external speaker are all arranged inside the shell, the shell is provided with a USB card port, and the connection terminal of the USB male head is connected to the USB card port. Furthermore, the housing is provided with a speaker opening, and the external speaker is arranged toward the speaker opening.

[0011] Furthermore, the external speaker is arranged on the top of the power amplifier board and the USB sound card.

[0012] Furthermore, the speaker bayonet is arranged on the top of the shell, and the USB bayonet is arranged on the side of the shell.

[0013] Beneficial effects: The present invention provides a PC single-interface USB portable active speaker, which can be used by directly inserting it into the USB female port of the computer. It does not require an additional audio cable to extract the sound source, nor does it require an additional USB cable for power supply. It only occupies one interface on the computer end, and there is no problem of confusing wiring harnesses. In temporary meetings or other situations where audio is urgently needed, there is no need to consider the connection length of the audio cable, the installation space, and the difficulty of installation. The speaker is simple and easy to use, easy to carry, and suitable for business trips and meetings. In addition, the storage unit can directly store audio files, so the content of the meeting can be listened to again after the meeting, thereby avoiding the user's inability to effectively receive the content of the meeting due to environmental reasons. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural schematic diagram of a PC single-interface USB portable active speaker according to an embodiment of the present invention; Figure 2 This is a circuit diagram of a PC single-interface USB portable active speaker according to an embodiment of the present invention; Figure 3 This is a schematic diagram of a PC single-port USB portable active speaker after being provided with a housing according to an embodiment of the present invention; Figure 4 It is a schematic diagram of a USB port and a speaker port provided on a housing according to an embodiment of the present invention.

[0015] In the figure: 1. Power amplifier board; 2. External speaker; 3. USB male connector; 4. USB sound card; 5. Housing; 6. Storage unit; 51. USB port; 52. Speaker port. DETAILED DESCRIPTION

[0016] The technical solution of the present invention is described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "one" do not indicate quantity restrictions, but indicate the existence of at least one. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship also changes accordingly.

[0018] See also Figure 1 The embodiment of the present application provides a PC single-interface USB portable active audio system, including a power amplifier board 1 and an external speaker 2, and also includes a USB male connector 3 and a USB sound card 4, wherein the USB male connector 3 is communicatively connected and electrically connected to the USB sound card 4, the USB male connector 3 is also electrically connected to the power amplifier board 1, the USB sound card 4 is communicatively connected to the power amplifier board 1, and the power amplifier board 1 is communicatively connected and electrically connected to the external speaker 2; A USB male connector 3 is used to receive audio data from a computer and transmit it to a storage unit 6; The storage unit 6 is used to receive the audio data transmitted from the USB male connector 3 and store the audio data.

[0019] For details, see Figure 2 , the terminal of the USB male connector 3 is connected to the USB sound card, the terminal of the USB male connector includes a power supply terminal and a communication terminal, wherein the positive terminal of the power supply terminal is connected to the positive power supply electrode of the power amplifier board 1, and the negative terminal of the power supply terminal is connected to the negative power supply electrode of the power amplifier board 1. The storage unit is integrated in the USB sound card. After the USB male connector 3 receives the audio data from the computer, it is transmitted to the USB sound card 4 and the storage unit 6. The USB sound card 4 performs audio processing on the audio data, and the storage unit 6 is responsible for storing the audio data for the user to listen to after the meeting; The USB sound card 4 is connected to the power amplifier board 1 through an audio line, and the audio output line of the USB sound card 4 is connected to the left channel audio, the right channel audio and the common negative electrode of the power amplifier board 1 respectively.

[0020] Use USB sound card 4 to extract PC sound source instead of 3.5mm audio interface, which solves the problem of PC interface occupation and messy wiring harness. In case of temporary business trip meeting, or emergency meeting without audio equipment support on site, there is no need to consider the length of audio cable, installation difficulty and installation space. It can be used directly by directly installing it to the USB interface of the computer. Compared with traditional audio, it is more portable.

[0021] The USB male connector 3 is used to supply power to the power amplifier board 1, so that only one USB interface is used to extract the sound source and supply power to the power amplifier. The sound source signal is extracted through the USB sound card 4 and then transmitted to the power amplifier main board. The audio amplified by the power amplifier main board is played through the external speaker 2, so that the volume is amplified and played externally.

[0022] See also Figure 3-4 In this embodiment, it also includes a shell 5, the USB sound card 4, the power amplifier board 1 and the external speaker 2 are all arranged inside the shell 5, the shell 5 is provided with a USB card port 51, and the connection terminal of the USB male connector 3 is connected to the USB card port 51.

[0023] The shell 5 is provided with a speaker opening, the external speaker 2 is arranged toward the speaker opening, the external speaker 2 is arranged on the top of the power amplifier board 1 and the USB sound card 4, the speaker bayonet 52 is arranged on the top of the shell 5, and the USB bayonet 51 is arranged on the side of the shell 5.

[0024] In other embodiments, other installation methods may be used to dispose the USB sound card 4, the power amplifier board 1 and the external speaker 2 inside the housing 5. It is only necessary to open a corresponding speaker bayonet 52 in the housing 5 and point the external speaker 2 toward the speaker opening.

[0025] The preferred specific embodiments of the present invention are described in detail above. It should be understood that a person skilled in the art can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solution that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. A PC single-port USB portable active speaker, comprising: The power amplifier board (1) and the external speaker (2) are characterized in that they further include a USB male connector (3), a USB sound card (4) and a storage unit (6), wherein the USB male connector (3) is communicatively connected and electrically connected to the USB sound card (4), the USB male connector (3) is also electrically connected to the power amplifier board (1), the USB sound card (4) is communicatively connected to the power amplifier board (1), and the power amplifier board (1) is communicatively connected and electrically connected to the external speaker (2); The USB male connector (3) is used to receive audio data from a computer and transmit the audio data to a storage unit (6); The storage unit (6) is used to receive audio data transmitted from the USB male connector (3) and store the audio data.

2. The PC single-port USB portable active audio system according to claim 1, characterized in that: The storage unit (6) is integrated into the USB sound card (4) or the power amplifier board (1).

3. The PC single-port USB portable active audio system according to claim 1, characterized in that: The positive terminal of the USB male connector (3) is connected to the positive power supply electrode of the power amplifier board (1), and the negative terminal is connected to the negative power supply electrode of the power amplifier board (1).

4. The PC single-port USB portable active audio system according to claim 1, characterized in that: The USB sound card (4) is communicatively connected to the power amplifier board (1) via an audio line.

5. The PC single-port USB portable active audio system according to claim 1, characterized in that: The power amplifier board (1) is communicatively connected and electrically connected to the external speaker (2) via a power amplifier circuit.

6. The PC single-port USB portable active audio system according to claim 1, characterized in that: It also comprises a housing (5), wherein the USB sound card (4), the power amplifier board (1) and the external speaker (2) are all arranged inside the housing (5), and the housing (5) is provided with a USB port (51), and the connection terminal of the USB male connector (3) is connected to the USB port (51).

7. The PC single-port USB portable active speaker according to claim 4, characterized in that: The housing (5) is provided with a speaker opening, and the external speaker (2) is arranged towards the speaker opening.

8. The PC single-port USB portable active audio system according to claim 5, characterized in that: The external speaker (2) is arranged on top of the power amplifier board (1) and the USB sound card (4).

9. The PC single-port USB portable active audio system according to claim 5, characterized in that: The speaker bayonet (52) is arranged on the top of the housing (5), and the USB bayonet (51) is arranged on the side of the housing (5).

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