CN219248043U - Portable display with DSP power amplifier - Google Patents

Abstract

The utility model discloses a portable display with a DSP power amplifier, wherein an audio processor is arranged in a shell, digital audio signals sent by a main control chip are sent to a loudspeaker after being subjected to sound effect and dubbing setting, and the output power of the audio signals is controlled after the audio processor is used for carrying out sound effect and dubbing setting on the audio signals, so that the problem of sound breaking caused by overlarge volume can be effectively solved, the playing tone quality of the portable display is effectively improved, and the audio signals are always controlled in a power range which can be received by the loudspeaker; the portable display has the advantages of simple structure and reasonable design, and can effectively solve the problem of poor playing tone quality of the portable display.

Description

Portable display with DSP power amplifier

Technical Field

The utility model discloses the technical field of portable displays, in particular to a portable display with a DSP power amplifier.

Background

The portable display, called portable screen for short, is a small display which can be put into a knapsack and is convenient to carry.

At present, most portable displays do not have audio playing function, even if part of the portable displays have playing function, because the space of the portable displays is limited, large-size and high-power speakers cannot be used, and only small-size and low-power speakers can be used, so that the sound quality of the portable displays is poor.

Therefore, whether a scheme for improving the sound quality of the portable device in a limited space can be developed or not becomes a problem to be solved urgently.

Disclosure of Invention

In view of this, the utility model provides a portable display with DSP power amplifier to solve the problem of poor playing tone quality of the conventional portable display.

The utility model provides a technical scheme, in particular to a portable display with a DSP power amplifier, which comprises: the device comprises a shell, a main control chip, a display screen, an audio processor, a loudspeaker and a digital-to-analog converter;

the shell is provided with a data interface and a earphone seat;

the main control chip is arranged in the shell and is connected with a data interface on the shell and used for receiving audio and video data and supplying power by a power supply;

the display screen is fixedly arranged on one side of the shell, connected with the main control chip and used for displaying video data sent by the main control chip;

the audio processor and the loudspeaker are arranged in the shell, the input end of the audio processor is connected with the output end of the main control chip, the output end of the audio processor is connected with the loudspeaker, and the audio data sent by the main control chip is sent to the loudspeaker for playing after being processed;

the digital-to-analog converter is arranged in the shell, the input end of the digital-to-analog converter is connected with the output end of the main control chip, and the output end of the digital-to-analog converter is connected with the earphone seat on the shell.

Preferably, the display screen is an EDP screen with an interactive function.

Further preferably, the data interface on the housing includes: HDMI interface and USB interface;

wherein, the USB interface is a full-function TypeC interface.

Further preferably, the number of the USB interfaces is at least two;

the portable display further comprises: a USB switching module;

the input end of the USB switching module is connected with the output end of the display screen, the output end of the USB switching module is connected with each USB interface respectively, the control end of the USB switching module is connected with the output end of the main control chip, and the USB switching module sends signals output by the display screen to the corresponding USB interfaces according to the control of the main control chip.

Further preferably, a key is further arranged on the shell;

the key is connected with the control end of the main control chip and used for controlling the work of the main control chip.

The portable display with the DSP power amplifier is provided with the audio processor in the shell, and the digital audio signals sent by the main control chip are sent to the loudspeaker after being subjected to sound effect and dubbing setting.

The portable display of the DSP power amplifier provided by the utility model has the advantages of simple structure and reasonable design, and can effectively solve the problem of poor playing tone quality of the portable display.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure of the utility model as claimed.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the utility model and together with the description, serve to explain the principles of the utility model.

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the description of the embodiments or the prior art will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.

Fig. 1 is a schematic diagram of a composition module of a portable display with DSP power amplifier according to an embodiment of the disclosure.

Detailed Description

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the utility model. Rather, they are merely examples of apparatus consistent with aspects of the utility model as detailed in the accompanying claims.

In order to solve the problem that the playing tone quality is poor in the conventional portable display, this embodiment provides a portable display with a DSP power amplifier, see fig. 1, this portable display mainly comprises a housing, a main control chip 1, a display screen 2, an audio processor 3, a loudspeaker 4 and a digital-to-analog converter 5, wherein, be provided with data interface and earphone seat on the housing, main control chip 1 sets up in the housing, main control chip 1 is connected with the data interface on the housing, be used for receiving video data and power supply, the fixed setting of display screen 2 is in one side of housing, be connected with main control chip 1, be used for displaying the video data that main control chip 1 sent, audio processor 3 and loudspeaker 4 all set up in the housing, audio processor 3's input is connected with the output of main control chip 1, send the audio data processing that main control chip 1 sent back to loudspeaker 4 department and play, digital-to-analog converter 5 sets up in the housing, digital-to-analog converter 5's input is connected with the output of main control chip 1, digital-to-analog converter 5's output is connected with earphone seat on the housing.

The specific working process of the portable display with the DSP power amplifier is as follows: the method comprises the steps that an audio and video signal to be played is accessed to a main control chip through a data interface on a shell, the main control chip sends the video signal to a display screen for display, meanwhile, the main control chip sends the corresponding audio signal to a digital-to-analog converter according to whether an earphone is inserted into a detection earphone seat or not, if the earphone is inserted, the corresponding audio signal is sent to the digital-to-analog converter, the audio digital signal is converted into an analog signal and then is transmitted to the earphone, and synchronous playing of the audio is carried out; if the earphone is not inserted, the audio signal is sent to the audio processor for sound effect and dubbing setting, and then is sent to the loudspeaker for synchronous playing, wherein the main control chip outputs the digital audio signal to the audio processor through IIS communication, and the audio processor sets sound effect and configuration through IIC communication.

According to the portable display with the DSP power amplifier, the audio processor is arranged, so that the digital audio signal sent by the main control chip is set with sound effect and dubbing, the output power of the audio signal is controlled, the problem of sound breaking caused by overlarge volume is solved, the playing tone quality of the portable display is effectively improved, and the audio signal is always controlled in the receivable power range of the loudspeaker.

The display screen 2 may be an EDP screen with an interactive function, such as a supporting plug-in touch screen or an oncell touch screen.

The data interfaces on the shell can be multiple, including: HDMI interface and USB interface, wherein, USB interface selects full-functional typeC interface, above-mentioned USB interface can set for at least two, as taking two USB interfaces as the example in FIG. 1, is USB-C1 interface and USB-C2 interface respectively, cooperate the use of above-mentioned two USB interfaces, still set up USB switching module 6, wherein, USB switching module 6's input is connected with display screen 2's output, USB switching module 6's output is connected with every USB interface respectively, USB switching module 6's control end is connected with main control chip 1's output, USB switching module 6 is according to main control chip 1's control, send the signal that display screen 2 exported to corresponding USB interface. The two USB interfaces are double-blind sockets, and any USB interface can be used at will.

For convenience of operation, a key 7 may be further disposed on the housing, referring to fig. 1, where the key 7 is connected to a control end of the main control chip 1, and is used for controlling the operation of the main control chip 1, such as controlling on/off, volume adjustment, and screen brightness adjustment.

Other embodiments of the utility model will be apparent to those skilled in the art from consideration of the specification and practice of the utility model disclosed herein. This application is intended to cover any variations, uses, or adaptations of the utility model following, in general, the principles of the utility model and including such departures from the present disclosure as come within known or customary practice within the art to which the utility model pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the utility model being indicated by the following claims.

It is to be understood that the utility model is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the utility model is limited only by the appended claims.

Claims (5)

1. A portable display with DSP power amplifier, comprising: the device comprises a shell, a main control chip (1), a display screen (2), an audio processor (3), a loudspeaker (4) and a digital-to-analog converter (5);

the shell is provided with a data interface and a earphone seat;

the main control chip (1) is arranged in the shell, and the main control chip (1) is connected with a data interface on the shell and is used for receiving audio and video data and supplying power by a power supply;

the display screen (2) is fixedly arranged on one side of the shell, is connected with the main control chip (1) and is used for displaying video data sent by the main control chip (1);

the audio processor (3) and the loudspeaker (4) are arranged in the shell, the input end of the audio processor (3) is connected with the output end of the main control chip (1), the output end of the audio processor (3) is connected with the loudspeaker (4), and audio data sent by the main control chip (1) are processed and then sent to the loudspeaker (4) for playing;

the digital-to-analog converter (5) is arranged in the shell, the input end of the digital-to-analog converter (5) is connected with the output end of the main control chip (1), and the output end of the digital-to-analog converter (5) is connected with the earphone seat on the shell.

2. Portable display with DSP power amplifier according to claim 1, characterized in that the display screen (2) is an EDP screen with interactive functionality.

3. The portable display with DSP power amplifier of claim 2, wherein the data interface on the housing comprises: HDMI interface and USB interface;

wherein, the USB interface is a full-function TypeC interface.

4. A portable display with DSP power amplifier as in claim 3, wherein said USB interfaces are at least two;

the portable display further comprises: a USB switching module (6);

the input end of the USB switching module (6) is connected with the output end of the display screen (2), the output end of the USB switching module (6) is connected with each USB interface respectively, the control end of the USB switching module (6) is connected with the output end of the main control chip (1), and the USB switching module (6) sends signals output by the display screen (2) to the corresponding USB interfaces according to the control of the main control chip (1).

5. The portable display with the DSP power amplifier according to claim 1, wherein a key (7) is further arranged on the shell;

the key (7) is connected with the control end of the main control chip (1) and is used for controlling the work of the main control chip (1).

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