CN115665457A - Display device, external power amplifier and audio output method - Google Patents

Abstract

The disclosure relates to a display device, an external power amplifier and an audio output method, which are applied to the technical field of display. The display device includes: a first controller configured to: detecting that an external power amplifier is accessed, responding to a first control instruction, decoding audio to be played to obtain a target audio signal corresponding to the audio to be played, and determining a high-definition multimedia interface (HDMI) for outputting the target audio signal, wherein the first control instruction is used for indicating the playing of the audio to be played; acquiring a target clock reference signal for controlling the output of a target audio signal based on the output sampling frequency of the HDMI; and based on the target clock reference signal, sending the target audio signal, the target clock reference signal and the output sampling frequency to an external power amplifier, so that the external power amplifier analyzes the target audio signal according to the target clock reference signal and the output sampling frequency. By adopting the display equipment, the condition that the playing audio is discontinuous can be avoided, and the user experience is improved.

Description

Display device, external power amplifier and audio output method

Technical Field

The disclosure relates to the technical field of display, in particular to a display device, an external power amplifier and an audio output method.

Background

Along with the continuous development of science and technology, the output channel of present display device output audio frequency is not being restricted to its built-in stereo set, can be through connecting external power amplifier, like external stereo set equipment etc. to this satisfies people to the high requirement of audio frequency, video media file to broadcast tone quality.

In the prior art, for a display device supporting an enhanced Audio Return Channel (eARC) mode and an external power amplifier, a High Definition Multimedia Interface (HDMI) 2.1 line is used for connection, so that Audio can be amplified and output by the external power amplifier through a sound Return technology. However, with the prior art, the played audio may be intermittent, which reduces the user experience.

Disclosure of Invention

In order to solve the technical problem or at least partially solve the technical problem, the present disclosure provides a display device, an external power amplifier, and an audio output method, in which a target clock reference signal, a target audio signal, and an output sampling frequency, which are used for controlling the display device to output a target audio signal, are simultaneously transmitted to the external power amplifier, so that the external power amplifier can control analysis processing on the target audio signal through the target clock reference signal, thereby avoiding a situation that a played audio is discontinuous due to an error between the clock reference signal used for controlling the display device to output the target audio signal and output the sampling frequency and the clock reference signal used for controlling the external power amplifier to analyze the target audio signal, and improving user experience.

In a first aspect, the present disclosure provides a display device comprising:

a first controller configured to: detecting that an external power amplifier is accessed, responding to a first control instruction, decoding audio to be played to obtain a target audio signal corresponding to the audio to be played, and determining a high-definition multimedia interface (HDMI) for outputting the target audio signal, wherein the first control instruction is used for indicating that the audio to be played is played;

acquiring a target clock reference signal for controlling the output of the target audio signal based on the output sampling frequency of the HDMI;

and sending the target audio signal, the target clock reference signal and the output sampling frequency to an external power amplifier based on the target clock reference signal, so that the external power amplifier analyzes the target audio signal according to the target clock reference signal and the output sampling frequency.

As an optional implementation manner of the embodiment of the present disclosure, the first controller is specifically configured to:

and responding to the operation of selecting the target equipment, and controlling the display to display a corresponding first processing result after the display equipment processes the key instruction.

As an optional implementation manner of the embodiment of the present disclosure, the first controller is specifically configured to:

determining at least one initial clock reference signal based on frequencies corresponding to a plurality of clock reference signals respectively and the output sampling frequency of the HDMI, wherein the frequencies corresponding to the at least one initial clock reference signal are all larger than the output sampling frequency of the HDMI;

determining the target clock reference signal that controls the output of the target audio signal among at least one of the initial clock reference signals.

As an optional implementation manner of the embodiment of the present disclosure, the first controller is further configured to:

responding to a first feedback instruction sent by the external power amplifier, closing a mute function of the external power amplifier, and sending a second control instruction to the external power amplifier so that the external power amplifier plays the audio to be played;

the first feedback instruction is used for indicating the external power amplifier to finish analysis processing of the target audio signal.

As an optional implementation manner of the embodiment of the present disclosure, the first controller is specifically configured to:

configuring attribute information of the HDMI, wherein the attribute information at least comprises signal transmission frequency;

and sending the target audio signal, the target clock reference signal and the output sampling frequency to the external power amplifier based on the target clock reference signal and the signal transmission frequency.

As an optional implementation manner of the embodiment of the present disclosure, the target audio signal, the target clock reference signal, and the output sampling frequency are differential signals.

As an optional implementation manner of the embodiment of the present disclosure, the first controller is specifically configured to:

and responding to the first control instruction after detecting that the external power amplifier is accessed and determining that the connection state of an enhanced audio return channel eARC of the external power amplifier connected through the HDMI is in an open state.

As an optional implementation manner of the embodiment of the present disclosure, the method further includes: HDMI;

is configured to:

and adopting an enhanced audio return channel eARC mode to connect with an external power amplifier.

In a second aspect, the present disclosure provides an external power amplifier, which includes:

a second controller configured to:

receiving a target audio signal, a target clock reference signal and an output sampling frequency which are sent by display equipment;

and analyzing the target audio signal according to the target clock reference signal and the output sampling frequency.

In a third aspect, the present disclosure provides an audio output method, comprising:

detecting that an external power amplifier is accessed, responding to a first control instruction, decoding audio to be played to obtain a target audio signal corresponding to the audio to be played, and determining a high-definition multimedia interface (HDMI) for outputting the target audio signal, wherein the first control instruction is used for indicating that the audio to be played is played;

acquiring a target clock reference signal for controlling the output of the target audio signal based on the output sampling frequency of the HDMI;

and sending the target audio signal, the target clock reference signal and the output sampling frequency to an external power amplifier based on the target clock reference signal, so that the external power amplifier analyzes the target audio signal according to the target clock reference signal and the output sampling frequency.

In a fourth aspect, the present disclosure provides an audio output method comprising:

receiving a target audio signal, a target clock reference signal and an output sampling frequency which are sent by display equipment;

and analyzing the target audio signal according to the target clock reference signal and the output sampling frequency.

Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages:

firstly, detecting that an external power amplifier is accessed, responding to a first control instruction, decoding audio to be played, acquiring a target audio signal corresponding to the audio to be played, determining a high-definition multimedia interface (HDMI) for outputting the target audio signal, wherein the first control instruction is used for indicating the playing of the audio to be played, then acquiring a target clock reference signal for controlling the output of the target audio signal based on the output sampling frequency of the HDMI, and finally sending the target audio signal, the target clock reference signal and the output sampling frequency to the external power amplifier based on the target clock reference signal, so that the external power amplifier analyzes the target audio signal according to the target clock reference signal and the output sampling frequency. In the technical scheme, the target clock reference signal for controlling the display device to output the target audio signal, the target audio signal and the output sampling frequency are simultaneously sent to the external power amplifier, so that the external power amplifier can control the analysis processing of the target audio signal through the target clock reference signal, thereby avoiding the problem that the broadcasting audio is discontinuous due to the fact that the display device is controlled to output the target audio signal and the clock reference signal for outputting the sampling frequency and the clock reference signal for controlling the external power amplifier to analyze the target audio signal have errors, and improving the user experience.

Drawings

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

In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present disclosure, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

Fig. 1A is a schematic view of an operational scenario among a display device, an external power amplifier, and a control device according to one or more embodiments of the present disclosure;

FIG. 1B is a diagram illustrating a process of an audio output method according to the prior art;

fig. 2 is a block diagram of a hardware configuration of the control apparatus 100 according to one or more embodiments of the present disclosure;

fig. 3A is a block diagram of a hardware configuration of a display apparatus 200 according to one or more embodiments of the present disclosure;

fig. 3B is a schematic diagram of a software configuration in the display device 200 according to one or more embodiments of the present disclosure;

fig. 3C is a schematic illustration of an icon control interface display of an application in the display device 200 according to one or more embodiments of the present disclosure;

FIG. 4A is a system framework diagram for audio output in accordance with one or more embodiments of the present disclosure;

FIG. 4B is an architecture diagram for audio output in accordance with one or more embodiments of the present disclosure;

fig. 5 is a schematic flowchart of an audio output method according to an embodiment of the disclosure;

fig. 6 is a schematic flowchart of another audio output method provided by the embodiment of the present disclosure;

FIG. 7 is a schematic diagram of a target clock reference signal according to an embodiment of the disclosure;

fig. 8 is a schematic flowchart of another audio output method provided by an embodiment of the present disclosure;

fig. 9 is a schematic flowchart of another audio output method provided by the embodiment of the present disclosure;

fig. 10 is a schematic flowchart illustrating another audio output method according to an embodiment of the disclosure;

FIG. 11 is a schematic diagram illustrating still another audio output method provided by an embodiment of the disclosure;

fig. 12 is a schematic diagram illustrating a principle of still another audio output method according to an embodiment of the disclosure.

Detailed Description

In order that the above objects, features and advantages of the present disclosure may be more clearly understood, aspects of the present disclosure will be further described below. It should be noted that the embodiments and features of the embodiments of the present disclosure may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced in other ways than those described herein; it is to be understood that the embodiments disclosed in the specification are only a few embodiments of the present disclosure, and not all embodiments.

The terms "first" and "second," etc. in this disclosure are used to distinguish between different objects, and are not used to describe a particular order of objects. For example, the first processing result, the second processing result, and the like are used to distinguish different processing results, and are not used to describe a specific order of the processing results.

The external power amplifier mainly refers to equipment which can be connected with display equipment, so that audio output is not limited to sound equipment built in the display equipment any more, and the audio is amplified and then output. In general, the external power amplifier may be an audio device, and the specific type of the external power amplifier is not limited in the embodiment of the present disclosure. The user plays the audio by utilizing the external power amplifier, so that the high requirement of the user on the playing tone quality of media files such as the audio and the like can be met.

At present, for display devices and external power amplifiers of various brands, when an enhanced Audio Return Channel (eARC) mode is supported, connection can be performed by adopting an HDMI2.1 wire, so that an Audio signal is transmitted to the external power amplifier by utilizing the HDMI2.1 wire, the external power amplifier is enabled to output the amplified Audio by utilizing a sound Return technology, and the Audio with high tone quality is provided for users.

Fig. 1A is a schematic view of an operation scenario among a display device, an external power amplifier, and a control device according to one or more embodiments of the present disclosure. As shown in fig. 1A, the external power amplifier 201 is connected to the display device 200, and a user can amplify and output the audio of the display device 200 through the external power amplifier 201, and can control the external device 201 using the control device (e.g., a remote controller) 100 of the display device.

Fig. 1B is a schematic diagram illustrating a process of an audio output method in the prior art. As shown in fig. 1B, when the display device detects that the external power amplifier is accessed, the display device responds to a first control instruction sent by the control device to obtain a target audio signal, a first clock reference signal and an output sampling frequency corresponding to the audio to be played, and controls the display device to send the target audio signal and the output sampling frequency to the external power amplifier by using the first clock reference signal, so that the external power amplifier analyzes the target audio signal according to the second clock reference signal and the output sampling frequency.

In order to solve the above problem, an embodiment of the present disclosure provides an audio output method, where a first controller of a display device detects that an external power amplifier is connected, decodes a to-be-played audio in response to a first control instruction, obtains a target audio signal corresponding to the to-be-played audio, and determines an HDMI (high definition multimedia interface) that outputs the target audio signal, where the first control instruction is used to instruct to play the to-be-played audio, then obtains a target clock reference signal that controls to output the target audio signal based on an output sampling frequency of the HDMI, and finally sends the target audio signal, the target clock reference signal, and the output sampling frequency to the external power amplifier based on the target clock reference signal, so that the external power amplifier analyzes the target audio signal according to the target clock reference signal and the output sampling frequency. In the technical scheme, the target clock reference signal for controlling the display device to output the target audio signal, the target audio signal and the output sampling frequency are simultaneously sent to the external power amplifier, so that the external power amplifier can control the analysis processing of the target audio signal through the target clock reference signal, thereby avoiding the problem that the broadcasting audio is discontinuous due to the fact that the display device is controlled to output the target audio signal and the clock reference signal for outputting the sampling frequency and the clock reference signal for controlling the external power amplifier to analyze the target audio signal have errors, and improving the user experience.

In some embodiments, the control device 100 may be a remote controller, and the communication between the remote controller and the display device 200 may include infrared protocol communication, bluetooth protocol communication, wireless or other wired methods, etc., by which the display device 200 can be controlled. The user can input a user command through keys on the remote controller, voice input, control panel input and the like to control the display device 200 or the external power amplifier 201. Such as: the user may input a corresponding control command through a volume up-down key, a menu key, a power on-off key, etc. on the remote controller to implement a function of controlling the display device 200.

In some embodiments, the display device 200 may also be controlled using mobile terminals, tablets, computers, laptops, and other smart devices.

In some embodiments, the display device 200 may not receive instructions using the smart device or the control device described above, but receive control of the user through touch or gesture, or the like.

In some embodiments, the display device 200 may also be controlled by a manner other than a control device and a smart device, for example, the voice command control of the user may be directly received by a module configured inside the display device 200 to obtain a voice command, or may be received by a voice control device provided outside the display device 200.

In some embodiments, the mobile terminal may install a software application with the display device 200 to implement connection communication through a network communication protocol for the purpose of one-to-one control operation and data communication. And the audio and video content displayed on the mobile terminal can be transmitted to the display device 200, so that the synchronous display function is realized. The display apparatus 200 may also perform data communication with a server through various communication means, and may allow the display apparatus 200 to perform communication connection through a Local Area Network (LAN), a Wireless Local Area Network (WLAN), and other networks. The server may be a cluster or a plurality of clusters, and may include one or more types of servers. The server may provide various contents and interactions to the display apparatus 200. The display device 200 may be a liquid crystal display, an OLED display, or a projection display device, etc. The display apparatus 200 may additionally provide an intelligent network tv function that provides a computer support function in addition to the broadcast receiving tv function.

Fig. 2 is a block diagram of a hardware configuration of the control apparatus 100 according to one or more embodiments of the present disclosure. As shown in fig. 2, the control apparatus includes a controller 110, a communication interface 130, a user input/output interface 140, a memory, and a power supply source. The control apparatus may receive an input operation instruction of a user and convert the operation instruction into an instruction recognizable and responsive by the display apparatus 200, serving as an interaction intermediary between the user and the display apparatus 200. The communication interface 130 is used for communicating with the outside, and includes at least one of a WIFI chip, a bluetooth module, NFC, or an alternative module. The user input/output interface 140 includes at least one of a microphone, a touch pad, a sensor, a key, or an alternative module.

Fig. 3A is a block diagram of a hardware configuration of a display apparatus 200 according to one or more embodiments of the present disclosure. The display apparatus 200 as shown in fig. 3A includes at least one of a tuner demodulator 210, a communicator 220, a detector 230, an external device interface 240, a first controller 250, a display 260, an audio output interface 270, a memory, a power supply, and a user interface (i.e., a user input interface) 280. The first controller 250 includes a central processor, a video processor, an audio processor, a graphic processor, a RAM, a ROM, first to nth interfaces for input/output. The display 260 may be at least one of a liquid crystal display, an OLED display, a touch display, and a projection display, and may also be a projection device and a projection screen. The tuner demodulator 210 receives a broadcast television signal through a wired or wireless reception manner, and demodulates an audio/video signal, such as an EPG data signal, from a plurality of wireless or wired broadcast television signals. The communicator 220 is a component for communicating with an external device or a server according to various communication protocol types. For example: the communicator may include at least one of a Wifi module, a bluetooth module, a wired ethernet module, and other network communication protocol chips or near field communication protocol chips, and an infrared receiver. The display apparatus 200 may establish transmission and reception of control signals and data signals with the external control apparatus 100 or the server 400 through the communicator 220. The detector 230 is used to collect signals of the external environment or interaction with the outside. The first controller 250 and the tuner-demodulator 210 may be located in different separate devices, that is, the tuner-demodulator 210 may also be located in an external device of the main device where the first controller 250 is located, such as an external set-top box. The user interface 280 may be used to receive control signals for controlling a device, such as an infrared remote control, etc.

In some embodiments, the first controller 250 controls the operation of the display device and responds to user operations through various software control programs stored in a memory. The first controller 250 controls the overall operation of the display apparatus 200. A user may input a user command on a Graphical User Interface (GUI) displayed on the display 260, and the user input interface receives the user input command through the Graphical User Interface (GUI). Alternatively, the user may input the user command by inputting a specific sound or gesture, and the user input interface receives the user input command by recognizing the sound or gesture through the sensor.

In some embodiments, a "user interface" is a media interface for interaction and information exchange between an application or operating system and a user that enables conversion between an internal form of information and a form that is acceptable to the user. A commonly used presentation form of the User Interface is a Graphical User Interface (GUI), which refers to a User Interface related to computer operations and displayed in a graphical manner. The interface element may be an icon, a window, a control, or the like, displayed in a display screen of the electronic device, where the control may include at least one of an icon, a button, a menu, a tab, a text box, a dialog box, a status bar, a navigation bar, a Widget, or the like, as a visual interface element.

Fig. 3B is a schematic diagram of software configuration in the display device 200 according to one or more embodiments of the present disclosure, and as shown in fig. 3B, the system is divided into four layers, which are, from top to bottom, an Application (Applications) layer (abbreviated as "Application layer"), an Application Framework (Application Framework) layer (abbreviated as "Framework layer"), an Android runtime (Android runtime) layer and a system library layer (abbreviated as "system runtime library layer"), and a kernel layer.

In some embodiments, at least one application program runs in the application program layer, and the application programs may be windows (windows) programs carried by an operating system, system setting programs, clock programs or the like; or an application developed by a third party developer. In particular implementations, applications in the application layer include, but are not limited to, the above examples.

In some embodiments, the system runtime layer provides support for the upper layer, i.e., the framework layer, and when the framework layer is used, the android operating system runs the C/C + + library included in the system runtime layer to implement the functions to be implemented by the framework layer.

In some embodiments, the kernel layer is a layer between hardware and software, including at least one of the following drivers: audio drive, display driver, bluetooth drive, camera drive, WIFI drive, USB drive, HDMI drive, sensor drive (like fingerprint sensor, temperature sensor, pressure sensor etc.) and power drive etc..

Fig. 3C is a schematic diagram of an icon control interface display of an application program in the display device 200 according to one or more embodiments of the present disclosure, as shown in fig. 3C, an application program layer includes at least one application program that can display a corresponding icon control in a display, for example: the system comprises a live television application icon control, a video on demand application icon control, a media center application icon control, an application center icon control, a game application icon control and the like. The live television application program can provide live television through different signal sources. A video-on-demand application may provide video from different storage sources. Unlike live television applications, video on demand provides video displays from some storage source. The media center application program can provide various applications for playing multimedia contents. The application program center can provide and store various application programs.

In some embodiments, the display device is a terminal device with a display function, such as a television, a mobile phone, a computer, a learning machine, and the like. In the display device:

an output interface (display 260, and/or audio output interface 270) configured to output user interaction information;

a communicator 220 for communicating with a server;

a first controller 250 configured to: detecting that an external power amplifier is accessed, responding to a first control instruction, decoding audio to be played, acquiring a target audio signal corresponding to the audio to be played, and determining a high-definition multimedia interface (HDMI) for outputting the target audio signal, wherein the first control instruction is used for indicating that the audio to be played is played;

acquiring a target clock reference signal for controlling the output of the target audio signal based on the output sampling frequency of the HDMI;

and sending the target audio signal, the target clock reference signal and the output sampling frequency to an external power amplifier based on the target clock reference signal, so that the external power amplifier analyzes the target audio signal according to the target clock reference signal and the output sampling frequency.

In some embodiments, the first controller 250 is specifically configured to:

determining at least one initial clock reference signal based on frequencies corresponding to a plurality of clock reference signals respectively and the output sampling frequency of the HDMI, wherein the frequencies corresponding to the at least one initial clock reference signal are all larger than the output sampling frequency of the HDMI;

determining the target clock reference signal that controls the output of the target audio signal among at least one of the initial clock reference signals.

In some embodiments, the first controller 250 is further configured to:

responding to a first feedback instruction sent by the external power amplifier, closing a mute function of the external power amplifier, and sending a second control instruction to the external power amplifier so that the external power amplifier plays the audio to be played;

the first feedback instruction is used for indicating the external power amplifier to finish analysis processing of the target audio signal.

In some embodiments, the first controller 250 is specifically configured to:

configuring attribute information of the HDMI, wherein the attribute information at least comprises signal transmission frequency;

and sending the target audio signal, the target clock reference signal and the output sampling frequency to the external power amplifier based on the target clock reference signal and the signal transmission frequency.

In some embodiments, the target audio signal, the target clock reference signal, and the output sampling frequency are differential signals.

The first controller 250 is specifically configured to:

and responding to the first control instruction after detecting that the external power amplifier is accessed and determining that the connection state of an enhanced audio return channel eARC of the external power amplifier connected through the HDMI is in an open state.

In some embodiments, also included is, HDMI;

is configured to:

and adopting an enhanced audio return channel eARC mode to connect with an external power amplifier.

To sum up, according to the audio output method executed on the display device, the method includes the steps of firstly detecting that an external power amplifier is connected, responding to a first control instruction, decoding the audio to be played, obtaining a target audio signal corresponding to the audio to be played, determining a high-definition multimedia interface (HDMI) for outputting the target audio signal, wherein the first control instruction is used for indicating that the audio to be played is played, then obtaining a target clock reference signal for controlling the output of the target audio signal based on the output sampling frequency of the HDMI, and finally sending the target audio signal, the target clock reference signal and the output sampling frequency to the external power amplifier based on the target clock reference signal, so that the external power amplifier can analyze the target audio signal according to the target clock reference signal and the output sampling frequency. In the technical scheme, the target clock reference signal for controlling the display device to output the target audio signal, the target audio signal and the output sampling frequency are simultaneously sent to the external power amplifier, so that the external power amplifier can control the analysis processing of the target audio signal through the target clock reference signal, thereby avoiding the problem that the broadcasting audio is discontinuous due to the fact that the display device is controlled to output the target audio signal and the clock reference signal for outputting the sampling frequency and the clock reference signal for controlling the external power amplifier to analyze the target audio signal have errors, and improving the user experience.

Fig. 4A is a system framework diagram for audio output according to one or more embodiments of the present disclosure, and as shown in fig. 4A, the system may include a channel processing module 401, an obtaining module 402, and a sending module 403. The system detects that an external power amplifier is accessed, firstly, a processing module 401 responds to a first control instruction, decoding processing is carried out on audio to be played, a target audio signal corresponding to the audio to be played is obtained, a high-definition multimedia interface HDMI for outputting the target audio signal is determined, the first control instruction is used for indicating the playing of the audio to be played, then, a target clock reference signal for controlling the output of the target audio signal is obtained by an obtaining module 402 based on the output sampling frequency of the HDMI, and finally, a sending module 403 sends the target audio signal, the target clock reference signal and the output sampling frequency to the external power amplifier based on the target clock reference signal, so that the external power amplifier analyzes the target audio signal according to the target clock reference signal and the output sampling frequency. In the technical scheme, the target clock reference signal for controlling the display device to output the target audio signal, the target audio signal and the output sampling frequency are simultaneously sent to the external power amplifier, so that the external power amplifier can control the analysis processing of the target audio signal through the target clock reference signal, thereby avoiding the problem that the broadcasting audio is intermittent due to the fact that the display device is controlled to output the target audio signal and the clock reference signal for outputting the sampling frequency have errors with the clock reference signal for controlling the external power amplifier to analyze the target audio signal, and improving the user experience.

Fig. 4B is an architecture diagram for audio output according to one or more embodiments of the present disclosure. Based on the above system framework, the implementation of the present disclosure in the android system is as shown in fig. 4B, the android system mainly includes an application layer, a framework layer, a system runtime layer, and a kernel layer, the implementation logic is mainly embodied in the application layer, and includes a channel setting module, a control module, and a display module, the functions of the modules have been described in detail in the foregoing embodiments, and are not described again here to avoid repetition.

According to the audio output method provided by the embodiment of the disclosure, a first controller of a display device detects that an external power amplifier is connected, in response to a first control instruction, the audio to be played is decoded, a target audio signal corresponding to the audio to be played is obtained, and a high-definition multimedia interface HDMI (high-definition multimedia interface) for outputting the target audio signal is determined, the first control instruction is used for indicating that the audio to be played is played, then the first controller obtains a target clock reference signal for controlling the output of the target audio signal based on an output sampling frequency of the HDMI, and finally the first controller sends the target audio signal, the target clock reference signal and the output sampling frequency to the external power amplifier based on the target clock reference signal, so that the external power amplifier can analyze the target audio signal according to the target clock reference signal and the output sampling frequency.

For more detailed explanation of the present solution, the following description is given with reference to fig. 5 by way of example, and it is understood that the steps involved in fig. 5 may include more steps or fewer steps in actual implementation, and the order between the steps may also be different, so as to enable the audio output method provided in the embodiment of the present disclosure to be implemented, and the embodiment of the present disclosure is not limited.

Fig. 5 is a schematic flowchart of an audio output method according to an embodiment of the present disclosure, and as shown in fig. 5, the audio output method specifically includes the following steps:

s510, detecting that an external power amplifier is connected, responding to a first control instruction, decoding the audio to be played, acquiring a target audio signal corresponding to the audio to be played, and determining a high-definition multimedia interface (HDMI) for outputting the target audio signal.

The first control instruction is used to instruct to play the audio to be played, and the first control instruction may be a control instruction input by a user through a control device corresponding to the display device, such as a remote controller, for example, the user controls the display device to play the audio to be played through a key on the control device, such as a remote controller, but is not limited thereto, and the disclosure is not particularly limited.

The external power amplifier is connected with the display device, so that audio output is not limited to sound equipment and a loudspeaker which are arranged in the display device for playing, and the external power amplifier can be used for amplifying audio and then outputting the amplified audio.

The audio to be played may be an audio in any application, such as a complete song, or a partial segment of a song, or a cut music segment, and may also be an audio corresponding to a video, but is not limited thereto, and those skilled in the art may specifically set the audio according to the actual situation.

The target audio signal is an audio signal obtained by decoding an audio to be played, and the target audio signal is a differential signal, and any audio to be played with different formats, such as multi-channel Linear Pulse Code Modulation (LPCM), digital cinema System (DTS), and the like, can be decoded into an audio signal of the differential signal by this method, but the disclosure is not limited thereto.

Wherein, the decoding process of the audio to be played refers to the prior art, which is not described herein in too much detail,

the high-definition multimedia interface HDMI is a full digital video and audio transmission interface, can be used for transmitting media files such as uncompressed audio signals and video signals, and can be used for display equipment, sound equipment, set-top box equipment and the like.

Optionally, in some embodiments, the first controller of the display device is connected to the external power amplifier through the HDMI in an enhanced audio return channel arc mode.

It should be noted that, for the enhanced audio return channel etarc mode, the HDMI2.1 interface supporting the etarc is used to connect the display device and the external power amplifier, so that the display device returns the audio signal to the external power amplifier through the HDMI2.1 channel through the enhanced audio return channel.

Specifically, after it is detected that the external power amplifier is connected with the display device, the first controller of the display device can detect that the display device is currently connected with the external power amplifier, and then respond to a first control instruction for instructing to play the audio to be played, decode the audio to be played to obtain a target audio signal corresponding to the audio to be played, and determine a high-definition multimedia interface (HDMI) for outputting the target audio signal.

Fig. 6 is a schematic flowchart of another audio output method provided by the embodiment of the present disclosure, and fig. 6 is a description of a possible implementation manner of S510 based on the embodiment shown in fig. 5, as shown in fig. 6:

s610, detecting that an external power amplifier is accessed.

S620, judging whether the connection state of the enhanced audio return channel eARC of the external power amplifier connected through the HDMI is in an open state.

S630, when the connection state of the enhanced audio return channel eARC of the external power amplifier connected through the HDMI is determined to be in the open state, decoding the audio to be played in response to the first control instruction, acquiring a target audio signal corresponding to the audio to be played, and determining a high-definition multimedia interface HDMI for outputting the target audio signal.

Compared with the audio return channel ARC, the enhanced audio return channel eARC can connect the display device and an external power amplifier through the HDMI2.1 interface supporting eARC, so that the display device can return audio signals to the external power amplifier through the HDMI2.1 channel through the eARC, and the audio to be played is amplified and output by the external power amplifier, thereby improving the tone quality of the audio to be played.

Specifically, after a first controller of the display device detects that an external power amplifier is connected with the display device, whether the connection state of an eARC of the external power amplifier connected with the display device is in an open state is detected, after the connection state of the eARC of the external power amplifier connected with the display device is determined to be in the open state, a first control instruction is responded again, the audio to be played is decoded, a target audio signal corresponding to the audio to be played is obtained, and a high-definition multimedia interface HDMI used for outputting the target audio signal is determined.

Like this, in this embodiment of the disclosure, whether adopt enhancement mode audio frequency passback passageway eARC to connect through detecting between display device and the external power amplifier to guarantee that display device utilizes enhancement mode audio frequency passback passageway eARC to pass back audio signal to external power amplifier on, utilize external power amplifier to treat the broadcast audio frequency and amplify the output, treat the tone quality of broadcast audio frequency with this improvement, promote user experience.

Optionally, on the basis of the foregoing embodiments, in some embodiments of the present disclosure, the method further includes:

and S640, when the connection state of the enhanced audio return channel eARC of the external power amplifier connected through the HDMI is determined not to be in the open state, not responding to the first control instruction, and ending the playing of the audio to be played.

Specifically, after the first controller of the display device detects that the external power amplifier is connected with the display device, whether the connection state of the eARC of the external power amplifier connected with the display device is in the open state is detected, after the connection state of the eARC of the external power amplifier connected with the display device is determined not to be in the open state, the first control instruction cannot be responded at this time, and then the playing of the audio to be played is finished.

S520, acquiring a target clock reference signal for controlling the output of the target audio signal based on the output sampling frequency of the HDMI.

The output sampling frequency is a sampling frequency corresponding to the audio to be played by the pointer, and the sampling frequency is specifically a sampling frequency of a sound signal within one second, and when the output sampling frequency is higher, the sound is restored more truly and naturally, that is, it can be understood that the output sampling frequency is used for determining the tone quality of the audio to be played, and exemplarily, the output sampling frequency may be any one of 22.05KHz, 44.1KHz, and 48KHz, which is not specifically limited by the present disclosure, and a person skilled in the art can specifically set the sampling frequency according to an actual situation.

The above target clock reference signal refers to a clock reference signal used for controlling the first controller of the display device to output a target audio signal corresponding to the HDMI at the audio to be played, and of course, the target clock reference signal also controls the first controller of the display device to output an output sampling frequency and a target audio signal corresponding to the audio to be played at the HDMI at the audio to be played, and the target clock reference signal may be generated by a timing module in the display device, or may be generated by a clock generator, but is not limited thereto, and those skilled in the art may specifically set the target clock reference signal according to actual situations.

For example, as shown in fig. 7, the clock reference signal of the first controller for controlling the display device outputs the target audio signal in HDMI corresponding to the audio to be played is a 0-1 rectangular wave, but is not limited thereto, and the disclosure is not limited thereto, and may be specifically set by a person skilled in the art according to the actual situation.

Specifically, after determining the HDMI, which outputs the target audio signal, the first controller of the display device determines a target clock reference signal that controls the HDMI to output the target audio signal according to an output sampling frequency of the HDMI.

Fig. 8 is a schematic flowchart of another audio output method provided by an embodiment of the present disclosure, and fig. 8 is a description of a possible implementation manner of S520 based on the embodiment shown in fig. 6, as shown in fig. 8:

and S810, determining at least one initial clock reference signal based on the frequency corresponding to each of the plurality of clock reference signals and the output sampling frequency of the HDMI.

And the frequency corresponding to at least one initial clock reference signal is greater than the output sampling frequency of the HDMI.

Specifically, the first controller of the display device compares the frequency corresponding to each clock reference signal in the plurality of clock reference signals with the output sampling frequency of the HDMI, and determines the clock reference signal greater than the output sampling frequency of the HDMI as the initial clock reference signal when determining that the frequency corresponding to the clock reference signal is greater than the output sampling frequency of the HDMI, thereby determining one or more initial clock reference signals in the plurality of clock reference signals.

For example, with the above embodiments, when it is determined that the output sampling frequency of the HDMI is 48KHz, the first controller of the display device compares the frequency corresponding to each clock reference signal in the plurality of clock reference signals with the output sampling frequency of the HDMI, and determines that the frequency greater than the output sampling frequency of the HDMI by 48KHz is {50KHz, 52.1KHz, 55KHz, 60KHz.. 49.2KHz, 52KHz, 48.5KHz }, and then determines that the plurality of clock reference signals corresponding to the plurality of frequencies are the plurality of initial clock reference signals, but is not limited thereto, and those skilled in the art may specifically set the method according to actual situations.

S820, among the at least one initial clock reference signal, a target clock reference signal that controls the output of the target audio signal is determined.

Specifically, the first controller of the display device determines a target clock reference signal controlling the output of the target audio signal among the one or more initial clock reference signals after determining the one or more initial clock reference signals.

Optionally, the first controller of the display device may randomly determine any one of the initial clock reference signals as the target clock reference signal in one or more initial clock reference signals, and may also determine the initial clock reference signal corresponding to the maximum frequency as the target clock reference signal.

For example, with the above embodiments, after determining a plurality of initial clock reference signals corresponding to a plurality of frequencies {50KHz, 52.1KHz, 55KHz, 60KHz.. 49.2KHz, 52KHz, 48.5KHz }, any one of the initial clock reference signals is randomly determined to be the target clock reference signal among the plurality of initial clock reference signals, and if the initial clock reference signal corresponding to the frequency 52KHz can be determined to be the target clock reference signal, but the disclosure is not limited thereto, and those skilled in the art can specifically set the method according to actual situations.

In this way, in the embodiment of the present disclosure, the target clock reference signal for controlling the output target audio signal is determined in the one or more initial clock reference signals with the output sampling frequency greater than the HDMI, so as to ensure that the target clock reference signal can be used to control the external power amplifier to completely analyze the target audio signal, and avoid that the target audio signal cannot be successfully and correctly analyzed in analyzing the target audio signal.

S530, based on the target clock reference signal, the target audio signal, the target clock reference signal and the output sampling frequency are sent to the external power amplifier, so that the external power amplifier can analyze the target audio signal according to the target clock reference signal and the output sampling frequency.

Specifically, at the HDMI position corresponding to the audio to be played, the first controller of the display device controls to send the target audio signal, the target clock reference signal, and the output sampling frequency to the external power amplifier by using the target clock reference signal.

Fig. 9 is a schematic flowchart of another audio output method provided by an embodiment of the present disclosure, and fig. 9 is a description of a possible implementation manner of S530 based on the embodiment shown in fig. 8, as shown in fig. 9:

s910, configure the attribute information of HDMI.

The attribute information may be identification information of the HDMI, which is used to express a function of the HDMI, and illustratively, the identification information of the HDMI may be, for example, a port number corresponding to the HDMI interface, and a function that is implemented by different HDMI interfaces, such as transmitting an audio signal and also transmitting a video signal, may be determined according to the port number corresponding to the HDMI interface, but is not limited thereto, and those skilled in the art may specifically set the attribute information according to actual situations.

And S920, based on the target clock reference signal and the signal transmission frequency, sending the target audio signal, the target clock reference signal and the output sampling frequency to an external power amplifier.

Specifically, before sending the target audio signal, the target clock reference signal and the output sampling frequency to the external power amplifier, the first controller of the display device configures attribute information, namely signal transmission frequency, of the HDMI of the audio to be played, and after configuring the attribute information of the HDMI, the first controller of the display device sends the target audio signal, the target clock reference signal and the output sampling frequency to the external power amplifier at the HDMI position corresponding to the audio to be played by using the target clock reference signal and according to the signal transmission frequency.

It should be noted that, the target audio signal, the target clock reference signal and the output sampling frequency are all transmitted to the external power amplifier in the form of differential signals, and in the process of transmitting the differential signals, two physical signal lines are adopted for transmission, the corresponding amplitudes of the signals transmitted on the two signal lines are the same, and the phases are opposite, that is, in the process of signal transmission, one physical signal line is used for transmitting a positive signal, the other physical signal line is used for transmitting a negative signal, and the two physical signal lines for transmitting the positive and negative signals are tightly coupled together, so that the external interference noise is the same, so that when a receiving end, that is, the external power amplifier receives the signals, the positive and negative signals are subtracted to cancel the common mode noise, and a correct transmission signal is obtained, namely, a correct target audio signal, a target clock reference signal and an output sampling frequency are obtained.

According to the technical scheme, the first controller of the display device detects that an external power amplifier is connected, in response to a first control instruction, the audio to be played is decoded, a target audio signal corresponding to the audio to be played is obtained, and a high-definition multimedia interface HDMI (high-definition multimedia interface) for outputting the target audio signal is determined, the first control instruction is used for indicating that the audio to be played is played, then the first controller of the display device obtains a target clock reference signal for controlling the output of the target audio signal based on an output sampling frequency of the HDMI, and finally the first controller of the display device sends the target audio signal, the target clock reference signal and the output sampling frequency to the external power amplifier based on the target clock reference signal, so that the external power amplifier can analyze the target audio signal according to the target clock reference signal and the output sampling frequency.

Fig. 10 is a schematic flowchart of another audio output method provided by the embodiment of the present disclosure, and fig. 10 is based on the embodiment shown in fig. 9, as shown in fig. 10, further after executing S530, the method further includes:

s1010, in response to the first feedback instruction sent by the external power amplifier, closing the mute function of the external power amplifier, and sending a second control instruction to the external power amplifier so that the external power amplifier plays the audio to be played.

The first feedback instruction is used for indicating the external power amplifier to finish analysis processing of the target audio signal.

Specifically, the first controller of the display device responds to the received first feedback instruction sent by the external power amplifier, determines that the external power amplifier completes analysis processing on the target audio signal to obtain the audio to be played, determines that the audio to be played can be played at the moment, closes the mute function of the external power amplifier, and sends a second control instruction to the external power amplifier to enable the external power amplifier to play the audio to be played.

Therefore, in the embodiment of the disclosure, after the external power amplifier is determined to have completed the analysis processing on the target audio signal and obtain the complete audio to be played, the mute function of the external power amplifier is turned off and a second control instruction is sent to the external power amplifier, so that the external power amplifier plays the audio to be played, thereby ensuring that the external power amplifier can be used to accurately and completely play the audio to be played.

Fig. 11 is a schematic flow chart of another audio output method provided in the embodiment of the present disclosure, where the embodiment of the present disclosure is based on the foregoing embodiment, and the audio output method of the present disclosure is executed by an external power amplifier, where the external power amplifier may be an external sound device. The present disclosure does not impose any limitations on the specific type of external power amplifier.

And S1110, receiving a target audio signal, a target clock reference signal and an output sampling frequency sent by the display device.

S1120, analyzing the target audio signal according to the target clock reference signal and the output sampling frequency.

The target clock reference signal is a control clock reference signal used for controlling the second controller of the external power amplifier to analyze, and the output sampling frequency is used for determining how the second controller of the external power amplifier analyzes the target audio signal.

Specifically, after receiving a target audio signal, a target clock reference signal and an output sampling frequency sent by the display device, the second controller of the external power amplifier is controlled by the target clock reference signal, and the target audio signal is analyzed and processed according to the output sampling frequency.

According to the technical scheme provided by the embodiment of the disclosure, a target audio signal, a target clock reference signal and an output sampling frequency sent by a display device are received through a second controller of an external power amplifier, and then the target audio signal is analyzed according to the target clock reference signal and the output sampling frequency. In the technical scheme, the target clock reference signal, the target audio signal and the output sampling frequency of the target audio signal output by the control display device are simultaneously sent by the receiving display device, the target clock reference signal of the target audio signal is output by the control display device, and the target audio signal is analyzed and processed according to the output sampling frequency, so that the condition that the played audio is intermittent due to the fact that the clock reference signal of the target audio signal and the output sampling frequency output by the control display device and the clock reference signal of the target audio signal analyzed by the external power amplifier are in error is avoided, and user experience is improved.

Fig. 12 is a schematic flowchart of another audio output method provided by an embodiment of the present disclosure, where fig. 12 is based on the embodiment shown in fig. 11, as shown in fig. 12, further after performing S1120, the method further includes:

s1210, after determining that the parsing of the target audio signal is completed, sending a first feedback instruction to the display device.

The first feedback instruction is used for indicating that the current external power amplifier completes analysis processing of a target audio signal corresponding to the audio to be played to the display device, so as to obtain the audio to be played, wherein reference is made to the prior art for analysis processing technology of the target audio signal corresponding to the audio to be played, and redundant description is omitted here.

And S1220, responding to a second control instruction sent by the display device, and playing the audio to be played.

Specifically, after the second controller of the external power amplifier determines that the target audio signal corresponding to the audio to be played is analyzed according to the target clock reference signal and the output sampling frequency, the second controller of the external power amplifier sends a first feedback instruction to the display device to inform the display device that the external power amplifier completes the analysis of the target audio signal corresponding to the audio to be played, and then the second controller of the external power amplifier plays the audio to be played in response to the received second control instruction sent by the display device.

Therefore, in the embodiment of the disclosure, after the external power amplifier is determined to complete the analysis processing of the target audio signal corresponding to the audio to be played and send the first feedback instruction to the display device, the second control instruction which indicates the external power amplifier to play the audio to be played and is sent by the received display device is responded to, so that the user can be ensured to utilize the external power amplifier to correctly play the audio to be played, the audio with better tone quality is brought to the user, and the user experience is improved.

The disclosed embodiments provide a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements each process executed by the audio output method, and can achieve the same technical effect, and in order to avoid repetition, the details are not repeated here.

The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.

The present disclosure provides a computer program product comprising: when the computer program product is run on a computer, the computer is caused to implement the audio output method described above.

The foregoing description, for purposes of explanation, has been presented in conjunction with specific embodiments. However, the foregoing discussion in some embodiments is not intended to be exhaustive or to limit the embodiments to the precise forms disclosed above. Many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles and the practical application, to thereby enable others skilled in the art to best utilize the embodiments and various embodiments with various modifications as are suited to the particular use contemplated.

Claims (10)

1. A display device, comprising:

a first controller configured to:

detecting that an external power amplifier is accessed, responding to a first control instruction, decoding audio to be played to obtain a target audio signal corresponding to the audio to be played, and determining a high-definition multimedia interface (HDMI) for outputting the target audio signal, wherein the first control instruction is used for indicating that the audio to be played is played;

acquiring a target clock reference signal for controlling the output of the target audio signal based on the output sampling frequency of the HDMI;

and sending the target audio signal, the target clock reference signal and the output sampling frequency to an external power amplifier based on the target clock reference signal, so that the external power amplifier analyzes the target audio signal according to the target clock reference signal and the output sampling frequency.

2. The display device of claim 1, wherein the first controller is specifically configured to:

determining at least one initial clock reference signal based on frequencies corresponding to a plurality of clock reference signals respectively and the output sampling frequency of the HDMI, wherein the frequencies corresponding to the at least one initial clock reference signal are all larger than the output sampling frequency of the HDMI;

determining the target clock reference signal that controls the output of the target audio signal among at least one of the initial clock reference signals.

3. The display device according to claim 1, wherein the first controller is further configured to:

responding to a first feedback instruction sent by the external power amplifier, closing a mute function of the external power amplifier, and sending a second control instruction to the external power amplifier so that the external power amplifier plays the audio to be played;

the first feedback instruction is used for indicating the external power amplifier to finish analysis processing of the target audio signal.

4. The display device of claim 1, wherein the first controller is specifically configured to:

configuring attribute information of the HDMI, wherein the attribute information at least comprises signal transmission frequency;

and sending the target audio signal, the target clock reference signal and the output sampling frequency to the external power amplifier based on the target clock reference signal and the signal transmission frequency.

5. The display device of claim 4, wherein the target audio signal, the target clock reference signal, and the output sampling frequency are differential signals.

6. The display device of claim 1, wherein the first controller is specifically configured to:

and responding to the first control instruction after detecting that the external power amplifier is accessed and determining that the connection state of an enhanced audio return channel eARC of the external power amplifier connected through the HDMI is in an open state.

7. The display device according to any one of claims 1 to 6, characterized by further comprising: HDMI;

is configured to:

and adopting an enhanced audio return channel eARC mode to connect with an external power amplifier.

8. An external power amplifier, comprising:

a second controller configured to:

receiving a target audio signal, a target clock reference signal and an output sampling frequency which are sent by display equipment;

and analyzing the target audio signal according to the target clock reference signal and the output sampling frequency.

9. An audio output method, comprising:

detecting that an external power amplifier is accessed, responding to a first control instruction, decoding audio to be played to obtain a target audio signal corresponding to the audio to be played, and determining a high-definition multimedia interface (HDMI) for outputting the target audio signal, wherein the first control instruction is used for indicating that the audio to be played is played;

acquiring a target clock reference signal for controlling the output of the target audio signal based on the output sampling frequency of the HDMI;

and sending the target audio signal, the target clock reference signal and the output sampling frequency to an external power amplifier based on the target clock reference signal, so that the external power amplifier analyzes the target audio signal according to the target clock reference signal and the output sampling frequency.

10. An audio output method, comprising:

receiving a target audio signal, a target clock reference signal and an output sampling frequency which are sent by display equipment;

and analyzing the target audio signal according to the target clock reference signal and the output sampling frequency.

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