WO2016202242A1

WO2016202242A1 - Arc control method, control unit, and display device

Info

Publication number: WO2016202242A1
Application number: PCT/CN2016/085743
Authority: WO
Inventors: 李欣欣; 魏敦晓; 江小华
Original assignee: 华为技术有限公司
Priority date: 2015-06-17
Filing date: 2016-06-14
Publication date: 2016-12-22
Also published as: CN106331557A; CN106331557B

Abstract

Disclosed are an ARC control method, control unit, and a display device. According to an embodiment of the present invention, the method comprises: obtaining a first format set of a display device, the display device having a receiving side interface that is a High-Definition Multimedia Interface (HDMI), and the first format set being a set of formats of audio to be played by the display device; obtaining a second format set, the second format set being a set of formats for which decoding is supported by a power amplification device, the power amplification device and the display device being connected through a HDMI, the power amplification device having a sending side interface that is a HDMI, and the intersection of the first format set and the second format set comprising at least one format; obtaining a target format from the first format set according to the second format set, the target format belonging to the second format set; and returning audio of the target format to the power amplification device through a HDMI ARC. By means of embodiments of the present invention, a case in which a power amplification device cannot play received audio can be avoided.

Description

ARC control method, control unit and display device

The present application claims priority to Chinese Patent Application No. 201510337339.5, entitled "ARC Control Method, Control Unit and Display Device", filed on June 17, 2015, the entire contents of which are incorporated herein by reference. In the application.

Technical field

The present invention relates to the field of multimedia technologies, and in particular, to an ARC control method, a control unit, and a display device.

Background technique

High Definition Multimedia Interface (HDMI) is a digital video/audio interface technology widely used in home audio and video systems. Currently, the more commonly used HDMI specification interface is version 1.4, which supports Audio Return Channel (ARC). When the TV and the amplifier device are connected via HDMI, the TV can transmit the audio played locally by the TV back to the power amplifier device through the ARC in the HDMI. In practical applications, the ARC can support the Pulse Code Modulation (PCM) format audio (that is, the decoded audio data) backhaul, and can support Dolby Digital Plus (Dolby Digital Plus). Audio backhaul in formats such as DDP) and Dolby Digital (DD).

At present, the TV generally uses the SONY/PHISIPS digital interface format (Sony/Philips Digital Interface Format, SPDIF) to control the ARC, that is, the TV directly transmits the audio to the power amplifier device, or transmits the PCM format audio back to the power amplifier device. However, the amplifier device is not capable of supporting all of the audio that is transmitted through the TV, which results in the amplifier device not being able to play the received audio in some cases.

Summary of the invention

Embodiments of the present invention provide an ARC control method, a control unit, and a display device, which are used to prevent a situation in which a power amplifier device cannot play the received audio.

In a first aspect, an ARP control method for an audio return channel is provided, including:

Obtaining a first format set of display devices, wherein the display device has high definition multimedia a receiving side interface of the interface HDMI, the first format set is a format set of audio to be played by the display device;

Obtaining a second format set, where the second format set is a format set that the power amplifier device supports decoding, the power amplifier device and the display device are connected by using an HDMI, and the power amplifier device is provided with a sending side interface of the HDMI, where the An intersection of a set of formats and the set of second formats includes at least one format;

Obtaining a target format from the first format set according to the second format set, wherein the target format belongs to the second format set;

The audio of the target format is passed back to the power amplifier device through the HDMI ARC.

With reference to the first aspect, in a first implementation manner of the first aspect, the obtaining a target format from the first format set according to the second format set includes:

The target format is selected from the intersection of the first format set and the second format set in a preset manner.

With reference to the first implementation manner of the first aspect, in a second implementation manner of the first aspect, the display device selects a target from the intersection of the first format set and the second format set in a preset manner The format includes:

Obtaining a priority level of a format of the intersection of the first format set and the second format set;

A format having a priority level of a preset level is selected from the intersection of the first format set and the second format set as the target format.

In conjunction with the first aspect, in a third implementation manner of the first aspect, before the acquiring the second format set, the method further includes:

Determining whether the power amplifier device supports HDMI ARC;

When it is determined that the power amplifier device supports the HDMI ARC, the second format set is acquired.

With reference to the third implementation manner of the first aspect, in a fourth implementation manner of the first aspect, an execution entity of the method is the display device; when determining that the power amplifier device supports HDMI ARC, the method further include:

The display device displays two options: turning on the HDMI ARC and turning off the HDMI ARC;

The display device acquires a second set of formats upon receiving a selection of the option to turn on the HDMI ARC.

With reference to the third implementation manner of the first aspect, in a fifth implementation manner of the first aspect, the executing entity of the method is the display device;

The method further includes:

The two options are not available when the display device determines that the power amplifier device does not support HDMI ARC.

With reference to the first aspect, in a sixth implementation manner of the first aspect, an executing entity of the method is the display device, and the method further includes:

The display device acquires a third format set, where the third format set is a format set of audio supported by the display device;

The display device displays a set of options, each of the options in the set of options is in one-to-one correspondence with each format in the intersection of the second format set and the third format set;

The obtaining the target format from the first format set according to the second format set includes:

The display device receives a selection of an option in the set of options;

When it is determined that the format corresponding to the selected option is located in the first format set, the display device determines a format corresponding to the selected option as the target format.

With reference to the sixth implementation manner of the first aspect, in a seventh implementation manner of the first aspect, the method further includes:

The display device acquires a priority level of a format of the intersection of the second format set and the third format set;

The set of options further includes an automatically selected option, wherein the automatically selected option corresponds to a format in which the intersection priority of the second format set and the third format is a preset level.

With reference to the sixth implementation manner of the first aspect, in an eighth implementation manner of the first aspect, the obtaining, by the second format set, the target format from the first format set further includes:

When the display device determines that the format corresponding to the selected option is not located in the first format set, the display device selects a target from the intersection of the first format set and the second format set in a preset manner. format;

or,

When the display device determines that the format corresponding to the selected option is not located in the first format set, And when the first format set includes a first format that can be converted into a second format in the second format set, the display device determines the second format as the target format, and the A format of audio is converted to audio of the target format.

With reference to the first aspect, in a ninth implementation manner of the first aspect, the executing entity of the method is the display device, and the method further includes:

The display device displays a set of options, wherein the set of options includes a first option corresponding to a first intersection, a second option corresponding to a second intersection, and the first intersection is the An intersection of the second format set and the third format set, where the second intersection is a format in which the intersection of the second format set and the third format set only supports a code rate not greater than a preset value;

The display device receives a selection of an option in the set of options;

When the intersection corresponding to the selected option intersects the first format set, the target format is selected from the intersected sets in a preset manner.

With reference to the ninth implementation manner of the first aspect, in the tenth implementation manner of the first aspect, the obtaining, by the second format set, the target format from the first format set further includes:

When the intersection corresponding to the selected option does not intersect with the first format set, the display device selects a target format from an intersection of the first format set and the second format set in a preset manner;

or,

When the intersection corresponding to the selected option does not intersect the first format set, and the first format set includes a first format that can be converted into a second format of the intersection corresponding to the selected option, The display device determines the second format as the target format, and converts audio of the first format into audio of the target format.

With reference to the sixth implementation manner of the first aspect, the seventh implementation manner, the eighth implementation manner, the ninth implementation manner, and the tenth implementation manner, in the eleventh implementation manner of the first aspect, The method also includes:

The display device updates the format corresponding to each option in the option set in real time.

In a second aspect, a control unit is provided, the control unit being located on a receiving side with HDMI In the display device of the interface, the obtained control unit includes:

a first acquiring module, configured to acquire a first format set of the display device, where the first format set is a format set of audio to be played by the display device;

a second acquiring module, configured to acquire a second format set, where the second format set is a format set that the power amplifier device supports decoding, the power amplifier device and the display device are connected by using an HDMI, and the power amplifier device is provided with an HDMI a sending side interface, where the intersection of the first format set and the second format set includes at least one format;

a third acquiring module, configured to acquire a target format from the first format set according to the second format set, where the target format belongs to the second format set;

a backhaul module, configured to transmit the audio of the target format to the power amplifier device through the HDMI ARC.

With reference to the second aspect, in a first implementation manner of the second aspect, the third acquiring module is configured to select a target format from an intersection of the first format set and the second format set in a preset manner. .

With reference to the first implementation manner of the second aspect, in a second implementation manner of the second aspect, the third acquiring module is configured to obtain an intersection of the first format set and the second format set a priority level of the format; a format with a priority level of a preset level is selected from the intersection of the first format set and the second format set as the target format.

In conjunction with the second aspect, in a third implementation manner of the second aspect, the control unit further includes:

a determining module, configured to determine whether the power amplifier device supports HDMI ARC;

The second obtaining module is specifically configured to acquire a second format set when the determining module determines that the power amplifier device supports the HDMI ARC.

In a third aspect, there is provided a display device comprising a receiving side interface of HDMI, and any one of the control units described in the second aspect.

With reference to the third aspect, in a first implementation manner of the third aspect, the display device is specifically the control unit in the third implementation manner of the second aspect;

The display device further includes:

a display unit, configured to: when the determining module determines that the power amplifier device supports HDMI ARC, display two options: turning on the HDMI ARC and turning off the HDMI ARC;

The second obtaining module in the control unit is specifically configured to receive the When the HDMI ARC option is selected, the second format set is obtained.

With reference to the third aspect, in a second implementation manner of the third aspect, the display device is specifically the control unit in the third implementation manner of the second aspect;

The display device further includes:

a display unit for displaying two options: turning on the HDMI ARC and turning off the HDMI ARC;

The two options are not available when the determining module determines that the power amplifier device does not support HDMI ARC.

With reference to the third aspect, in a third implementation manner of the third aspect, the display device further includes a display unit;

The control unit further includes a fourth acquiring module, configured to acquire a third format set, where the third format set is a format set of audio supported by the display device;

The display unit is configured to display a set of options, each option in the set of options is in one-to-one correspondence with each format in an intersection of the second format set and the third format set;

The third acquiring module of the control unit is specifically configured to receive a selection of an option in the option set; when it is determined that a format corresponding to the selected option is located in the first format set, the selected option is The corresponding format is determined as the target format.

With reference to the third implementation manner of the third aspect, in a fourth implementation manner of the third aspect, the fourth acquiring module is further configured to acquire an intersection of the second format set and the third format set The priority level of the format;

With the third implementation of the third aspect, in a fifth implementation manner of the third aspect, the third acquiring module is further configured to: when the display device determines that the format corresponding to the selected option is not located in the first In the format set, the target format is selected from the intersection of the first format set and the second format set in a preset manner;

or,

The third obtaining module is further configured to: when the display device determines that a format corresponding to the selected option is not located in the first format set, and the first format set includes being convertible into the second format set When the first format of the second format is determined, the second format is determined as the target format, and Converting the audio of the first format to audio of the target format.

With reference to the third aspect, in a sixth implementation manner of the third aspect, the display device further includes a display unit;

The display unit is configured to display a set of options, where the set of options includes a first option and a second option, where the first option corresponds to a first intersection, and the second option corresponds to a second intersection, where the first intersection is An intersection of the second format set and the third format set, where the second intersection is a format in which the intersection of the second format set and the third format set only supports a code rate not greater than a preset value;

The third acquiring module of the control unit is specifically configured to receive a selection of an option in the option set; when the intersection corresponding to the selected option intersects with the first format set, according to a preset manner The target format is selected from the set of intersections.

With reference to the sixth implementation manner of the third aspect, in a seventh implementation manner of the third aspect, the third acquiring module is further configured to: when the selected option corresponds to an intersection that does not intersect the first format set And selecting a target format from the intersection of the first format set and the second format set in a preset manner;

or,

The third obtaining module is further configured to: when the intersection corresponding to the selected option does not intersect with the first format set, and the first format set includes an intersection that can be converted into an intersection corresponding to the selected option When the first format of the second format is determined, the second format is determined as the target format, and the audio of the first format is converted into audio of the target format.

With reference to the fourth implementation manner of the third aspect, the fifth implementation manner, the sixth implementation manner, and the seventh implementation manner, in the eighth implementation manner of the third aspect, the display device further includes:

An update unit, configured to update a format corresponding to each option in the option set in real time.

In a fourth aspect, a control chip is provided, the control chip being located in a display device having a receiving side interface of HDMI, the obtained control chip comprising a first memory, one or more first processors, and one or more programs, Wherein the one or more programs are stored in the first memory and configured to be executed by the one or more first processors;

The one or more first processors are configured to execute:

Obtaining a first format set of the display device, where the first format set is the display a collection of formats of audio to be played by the device;

The audio of the target format is transmitted back to the power amplifier device through the HDMI audio return channel (ARC).

With reference to the fourth aspect, in a first implementation manner of the fourth aspect, the obtaining, by the second format set, the target format from the first format set includes:

With reference to the first implementation manner of the fourth aspect, in a second implementation manner of the fourth aspect, the display device selects a target format from an intersection of the first format set and the second format set in a preset manner include:

In conjunction with the fourth aspect, in a third implementation manner of the fourth aspect, the one or more first processors are further configured to:

Determining whether the power amplifier device supports HDMI ARC;

In a fifth aspect, there is provided a display device comprising a receiving side interface of HDMI, and any one of the control chips described in the fourth aspect.

In conjunction with the fifth aspect, in a first implementation of the fifth aspect, the display device further includes a second memory, one or more second processors, and one or more programs, wherein the one or more programs Stored in the second memory and configured to be executed by the one or more second processors;

The one or more second processors are configured to execute:

When it is determined that the power amplifier device supports the HDMI ARC, two options are displayed: turning on the HDMI ARC and turning off the HDMI ARC;

The one or more first processors are configured to execute:

A second format set is obtained when a selection of the option to enable the HDMI ARC is received.

In conjunction with the fifth aspect, in a second implementation of the fifth aspect, the display device further includes a second memory, one or more second processors, and one or more programs, wherein the one or more programs Stored in the second memory and configured to be executed by the one or more second processors;

The one or more second processors are configured to execute:

Display two options: turning on the HDMI ARC and turning off the HDMI ARC;

The two options are not available when the control chip determines that the power amplifier device does not support HDMI ARC.

In conjunction with the fifth aspect, in a third implementation manner of the fifth aspect, the one or more first processors are further configured to:

Obtaining a third format set, where the third format set is a format set of audio supported by the display device;

The display device also includes a second memory, one or more second processors, and one or more programs, wherein the one or more programs are stored in the second memory and configured to be Or a plurality of second processors executing;

The one or more second processors are configured to execute:

Displaying a set of options, each of the options in the set of options being in one-to-one correspondence with each format of the intersection of the second format set and the third format set;

Receiving a selection of an option in the set of options;

When it is determined that the format corresponding to the selected option is located in the first format set, the format corresponding to the selected option is determined as the target format.

In conjunction with the third implementation of the fifth aspect, in a fourth implementation manner of the fifth aspect, the one or more first processors are further configured to:

Obtaining a priority level of a format of the intersection of the second format set and the third format set;

With the third implementation of the fifth aspect, in a fifth implementation manner of the fifth aspect, the obtaining the target format from the first format set according to the second format set further includes:

or,

When the display device determines that the format corresponding to the selected option is not located in the first format set, and the first format set includes a first format that can be converted into the second format in the second format set, The display device determines the second format as the target format, and converts audio of the first format into audio of the target format.

In conjunction with the fifth aspect, in a sixth implementation manner of the fifth aspect, the one or more first processors are further configured to:

The one or more second processors are further configured to execute:

Displaying a set of options, wherein the set of options includes a first option corresponding to a first intersection, a second option corresponding to a second intersection, the first intersection being the second format set And an intersection of the third format set, where the second intersection is a format in which the intersection of the second format set and the third format set only supports a code rate not greater than a preset value;

The display device receives a selection of an option in the set of options;

With reference to the sixth implementation manner of the fifth aspect, in a seventh implementation manner of the fifth aspect, the obtaining the target format from the first format set according to the second format set further includes:

or,

With reference to the fourth implementation manner, the fifth implementation manner, the sixth implementation manner, and the seventh implementation manner of the fifth aspect, in the eighth implementation manner of the fifth aspect, the one or more second processing It is also used to execute:

The format corresponding to each option in the option set is updated in real time.

It can be seen from the above technical solutions that the embodiments of the present invention have the following advantages:

In the embodiment of the present invention, by acquiring a format set supported by the power amplifier device, that is, a second format set, and acquiring, according to the second format set, the audio of the target format from the format set of the audio to be played by the display device, and the target The format belongs to the second format set, so that after the audio of the target format is transmitted back to the power amplifier device through the HDMI audio return channel (ARC), the power amplifier device can ensure the audio of the target format, and the power amplifier device cannot be played. The situation of the received audio.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description of the drawings used in the embodiments or the prior art description will be briefly described below. Obviously, the drawings in the following description It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any inventive labor.

1 is a schematic flow chart of an embodiment of an ARC control method according to the present invention;

2 is a schematic flow chart of another embodiment of an ARC control method according to the present invention;

3 is a schematic flow chart of another embodiment of an ARC control method according to the present invention;

4 is a schematic diagram of an embodiment of a first option menu;

Figure 5 is a schematic structural view of an embodiment of a control unit of the present invention;

6 is a schematic structural view of another embodiment of a display device of the present invention;

7 is a schematic structural view of another embodiment of a display device of the present invention;

FIG. 8 is a schematic structural diagram of an embodiment of a control chip according to the present invention; FIG.

FIG. 9 is a schematic structural view of an embodiment of a display device of the present invention.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is an embodiment of the invention, but not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of the present invention.

The terms "comprising" and "having", and any variations thereof, are intended to cover a non-exclusive inclusion, such as a process or method comprising a series of steps or units. The system, product or device is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not explicitly listed or are inherent to such processes, methods, systems, products or devices.

Please refer to FIG. 1. FIG. 1 is a schematic flowchart diagram of an embodiment of an ARC control method according to the present invention. As shown in FIG. 1, the ARC control method of the present invention includes:

101. Acquire a first format set of the display device.

In this embodiment, the display device has a receiving side interface of HDMI, and the power amplifier device has a transmitting side interface of HDMI, the display device and the power amplifier device are connected through HDMI, and the HDMI supports ARC. The display device is used to play video or play video and audio, and the power amplifier device is used to play audio. Specifically, the display device may be a television or a projector (for example, a micro laser projector).

In the actual reference, the audio and video to be played by the display device may be obtained from multiple places by the display device. For example, if the display device is a digital television, the audio and video to be played by the display device is transmitted to the display device by wire, wireless or satellite. Alternatively, the audio and video to be played by the display device is sent to the power amplifier device by a digital versatile disc (DVD), and then sent to the display device for playback by the power amplifier device. Specifically, the display device receives the audio code stream, and the display device further includes a decoder for decoding the received audio code stream into at least one format of audio.

In the present invention, the first format set refers to a format set of audio to be played by the display device, wherein the audio to be played refers to audio decoded by the audio code stream from other sources than the power amplifier device.

In the case where it is required to play the audio through the power amplifier device, the display device transmits the audio back to the power amplifier device through the HDMI ARC that connects the display device and the power amplifier device. The audio to be played by the display device contains at least one format. When the audio is transmitted back to the power amplifier device, only one of the upcoming audio formats is selected and returned to the power amplifier device. Therefore, before the selection, the format set of the audio to be played by the display device, that is, the first format set, is first acquired.

In this embodiment, the executor of the ARC control method may be a display device, or may be a control module located at the receiving side interface of the HDMI of the display device, which is not limited herein.

102. Obtain a second format set.

The display device will return the audio to the amplifier device for playback. However, since the audio format supported by the display device and the audio format supported by the power amplifier device are not necessarily the same, in the audio of multiple formats to be played by the display device, there may be a partial format of the audio in the power amplifier device. Can't play. In order to enable the audio that is transmitted back to the power amplifier device to be played by the power amplifier device, in this embodiment, the second format set is also acquired, that is, the power amplifier device supports the decoded format set. In practical applications, the intersection of the first format set and the second format set includes at least one format, such as PCM.

Specifically, when the control module located at the receiving side interface of the HDMI of the display device detects the hot plugging behavior of the power amplifier device, or on the premise that the display device and the power amplifier device are connected through the HMDI, when located on the display device When the control module at the receiving side interface of the HDMI detects that the power amplifier device is powered on, the display device acquires the second format set.

There are several ways to get a second set of formats. For example, the control module located at the receiving side interface of the HDMI of the display device transmits a CEC capability set query command to the power amplifier device through the HDMI, and after receiving the command, the power amplifier device sends a second format set to the sending commander.

103. Obtain a target format from the first format set according to the second format set.

After obtaining the first format set and the second format set, the format of the audio to be returned is determined in the first format set. For convenience of description, the format of the audio to be returned is hereinafter referred to as the target format. Specifically, in this embodiment, the target format is obtained from the first format set according to the second format set, where the target format belongs to the second format set, so that the returned audio can be played by the power amplifier device.

In this embodiment, the method for obtaining the target format from the first format set according to the second format set is A variety. For example, after acquiring the first format set and the second format set, the target format is selected from the intersections in the first format set and the second format set in a preset manner. Among them, there are a variety of preset methods. For example, the priority levels of all formats in the intersection of the first format set and the second format set are first obtained, and then the format with the priority level of the preset level is selected as the target format from the intersection. Preferably, the format with the highest priority is selected from the intersection as the target format.

There are various methods for obtaining the priority levels of all formats in the intersection. For example, the display device includes a memory in which a prioritized ranking of all audio formats supported by the display device is stored. Obtaining a priority level of all formats in the intersection includes: obtaining a priority ranking of all formats in the intersection from the memory, and formatting the intersection according to a priority ranking of all formats in the intersection Sorting is performed, the priority of the format being the ordering of the format within the intersection. After obtaining the priority levels of all the formats in the intersection, select the format with the priority level as the preset level as the target format. For example, select the format with the highest priority as the target format. Of course, the above description is for illustrative purposes only and is not limiting.

104. Pass the audio of the target format to the power amplifier device through the HDMI ARC.

After determining the format of the audio to be returned, the audio of the target format is selected from the audio to be played by the display device, and is transmitted back to the power amplifier device through the HDMI ARC, so that the power amplifier device plays the audio of the target format.

In this embodiment, by acquiring a format set supported by the power amplifier device, that is, a second format set, and acquiring the audio of the target format from the first format set according to the second format set, and the target format belongs to the first The second format is set, so that after the audio of the target format is transmitted back to the power amplifier device through the HDMI audio return channel (ARC), the power amplifier device can ensure the audio of the target format, and the power amplifier device cannot be played. The situation of audio.

In this embodiment, the display device transmits the audio of the target format to the power amplifier device through the HDMI ARC. However, in practical applications, the power amplifier device connected to the display device via HDMI does not necessarily support the HDMI ARC. Therefore, in the ARC control method of the present embodiment, before the second format set is acquired, it is determined whether the power amplifier device supports the HDMI ARC. When it is determined that the power amplifier device supports the HMDI ARC, the second format set is acquired. Among them, there are various methods for determining whether the power amplifier device supports HDMI ARC. For example, the display device sends a CEC command to the power amplifier device through the HMDI, and queries the power amplifier device whether the power amplifier device supports the HDMI ARC.

Preferably, in this embodiment, the execution body of the ARC control method is a display device. Display device When determining that the power amplifier device supports HMDI ARC, the ARC control method also includes:

The display device displays two options: turning on the HDMI ARC and turning off the HDMI ARC. The second format set is acquired when the display device receives a selection of the "turn on HDMI ARC" option.

In this way, the user can be provided with the option of turning on the HDMI ARC function of the power amplifier device. Specifically, in this embodiment, the display device displays the two options in multiple manners. For example, the display device further includes a display screen, and the display device specifically displays the two options on the display screen. Or, the display device projects the page onto a preset plane on which the display device displays the two options. Of course, the above is merely an example and is not limiting.

In this embodiment, the display device may not display the two options when the display device determines that the power amplifier device supports the HDMI ARC. Preferably, in this embodiment, the display device displays the two options. When the display device determines that the power amplifier device supports the HDMI ARC, the two options are available, and the display device can receive the selection of any one of the two options. When the display device determines that the power amplifier device does not support HDMI ARC, the two options are not available, that is, the display device does not accept the selection of either of the two options.

In the above embodiment, when the target format is obtained from the first format set according to the second format set, specifically, the target format is directly selected from the intersection of the first format set and the second format set. In practice, the target format can also be obtained in other ways. Please refer to FIG. 2. FIG. 2 is a schematic flowchart diagram of another embodiment of an ARC control method according to the present invention. In this embodiment, the execution body of the ARC control method is a display device. The ARC control method includes:

201. The display device acquires a second format set.

For a detailed description, please refer to the description of step 102 in the embodiment shown in FIG.

202. The display device acquires a third format set.

In this embodiment, the third format set is a format set of audio supported by the display device. The first set of formats is a subset of the third set of formats.

203. The display device displays an option set, where each option in the option set has a one-to-one correspondence with each format in an intersection of the second format set and the third format set.

After the display device obtains the second format set and the third format set, the intersection of the two format sets is obtained, and each format of the intersection is used as an option for the user to select.

In an actual application, the display device may display a set of options after acquiring the third format set. Of course, the above description is by way of example only and not limiting.

204. The display device receives a selection of an option in the set of options.

After the display device receives the selection of the option in the option set, each time the display device returns the audio to the power amplifier device, according to the selected option, before receiving the reselection of the option in the option set To determine the target format.

205. The display device acquires a first format set of the display device.

The first format set is acquired when the display device receives the audio to be played. It should be noted that the first format set is a subset of the third format set, and the intersection of the first format set and the second format set includes at least one format.

For details, please refer to the description of step 101 in the embodiment shown in FIG. 1.

206. When it is determined that the format corresponding to the selected option is located in the first format set, the display device determines a format corresponding to the selected option as the target format.

Since the display device receives the selection of the options in the set of options before the display device receives the audio to be played, and the format set of the audio to be played by the display device is not necessarily located in the second format set and the third format set The intersection, therefore, when the display device receives the video to be played, first determines whether the format corresponding to the selected option is located in the first format set, and if so, determines that the format corresponding to the selected option is the target format.

207. Pass the audio of the target format to the power amplifier device by using the HDMI ARC.

For a detailed description, please refer to the description of step 104 in the embodiment shown in FIG.

In this embodiment, by setting the option, the user can select the format of the returned audio, and determine the format of the audio to be transmitted back to the power amplifier device according to the selected format, which can meet the different needs of the user.

Preferably, in this embodiment, the display device further acquires a priority level of a format of the intersection of the second format set and the third format set. Specifically, the display device may pre-store the priority ranking of all formats in the third format set. The display device obtains a priority ranking of the format of the intersection of the second format set and the third format set, and sorts all the formats of the intersection according to the priority ranking of all formats in the intersection, and the priority of each format is The ordering of the format within the intersection.

The set of options displayed by the display device also includes options that are automatically selected. The automatically selected option corresponds to a format in which the intersection priority level of the second format set and the third format set is a preset level. Preferably, the automatically selected option corresponds to a format with the highest priority of the intersection of the second format set and the third format set.

In this embodiment, when the display device determines that the format corresponding to the selected option is located in the first format set, the display device determines the format corresponding to the selected option as the target format. In an actual application, the format corresponding to the selected option is not necessarily located in the first format set, that is, the audio to be played by the display device does not necessarily include the audio of the format selected by the user.

In this case, preferably, the display device selects the target format from the intersection of the first format set and the second format set in a preset manner. For example, the display device selects the format with the highest priority from the intersection of the first format set and the second format set as the target format.

Or the display device determines that the first format includes the first format, and the second format includes the second format, where the first format can be converted into the second format, then the display device determines the second format to be the target format, and The audio of the first format in the played audio is converted to audio including the second format, and then the audio of the second format is transmitted back to the power amplifier device through the HDMI ARC. For example, the display device receives the selection of the DD format in the option set, and the audio to be played does not include the DD format audio, but includes the DDP format audio, then the display device can convert the DDP format audio. The audio is in DD format, or converted to audio containing both DD format and PCM format, and then the audio of DD format is transmitted back to the power amplifier device through HDMI ARC.

In the embodiment shown in FIG. 2, each option in the set of options is in one-to-one correspondence with each format in the intersection of the second format set and the third format set. Such a scheme is suitable for the case where the intersection of the second format set and the third format set is small. When the intersection of the second format set and the third format set is large, other schemes may also be adopted. Carry out a detailed description. Please refer to FIG. 3. FIG. 3 is a schematic flowchart diagram of another embodiment of an ARC control method according to the present invention. In this embodiment, the execution body of the ARC control method is a display device. The ARC control method includes:

301. The display device acquires a second format set.

For details, please refer to the description of step 201 in the embodiment shown in FIG. 2.

302. The display device acquires a third format set.

For details, please refer to the description of step 202 in the embodiment shown in FIG. 2.

303. The display device displays a set of options.

In this embodiment, the option set includes a first option and a second option, where the first option corresponds to a first intersection, the second option corresponds to a second intersection, and the first intersection is the second format set And an intersection of the third format set, where the second intersection is a format in which the intersection of the second format set and the third format set only supports a code rate not greater than a preset value. Specifically, the name of the first option can be Think "raw", the name of the second option can be "legacy". Of course, the above is merely an example and is not limiting.

Preferably, in this embodiment, the option set may further include a third option, where the third option corresponds to an intersection of the first format set and the second format set. For example, the intersection corresponding to the third option includes a PCM format. Thus, if the display device receives the selection of the third option, the audio of the format corresponding to the third option must be found in the audio to be played.

304. The display device receives a selection of an option in the set of options.

For a detailed description, please refer to the description of step 204 in the embodiment shown in FIG. 2.

305. The display device acquires a first format set of the display device.

For details, please refer to the description of step 205 in the embodiment shown in FIG. 2.

306. When the intersection corresponding to the selected option intersects the first format set, select the target format from the intersected set in a preset manner.

Since the display device receives the selection of the options in the set of options before the display device receives the audio to be played, and the intersection of the format set of the audio to be played by the display device and the selected option does not necessarily have an intersection, When the display device receives the video to be played, it first determines whether the intersection corresponding to the selected option is in the set that intersects the first format set, and if there is an intersecting set, then from the intersected set in the preset manner. Select the target format.

There are several preset methods, and one of them is illustrated below. In this embodiment, the priority ranking of all formats in the third format set is also stored in the display device. The display device obtains the priority ranking of all formats in the intersection of the intersection of the selected option and the intersection of the first format set, and uses the highest priority format among all the formats as the target format.

307. Pass the audio of the target format to the power amplifier device by using the HDMI ARC.

For details, please refer to the description of step 207 in the embodiment shown in FIG. 2.

In this embodiment, by setting each option to correspond to a set, the user can select the format of the returned audio while keeping the option menu concise.

In this embodiment, when the display device determines that the intersection corresponding to the selected option has a set intersecting with the first format set, the display device selects the target format from the intersected set in a preset manner. In practical applications, the format corresponding to the selected option is not necessarily in the first format set, that is, the display setting. The audio to be played soon does not necessarily include the audio of the format selected by the user.

Or the display device determines that the first format includes a first format, and the selected intersection corresponds to the second format, where the first format can be converted into the second format, and the display device determines the target to be the second format. The format converts the audio of the first format in the audio to be played into audio including the second format, and then returns the audio of the second format to the power amplifier device through the HDMI ARC. For example, the second intersection corresponding to the second option includes the DD format, and the display device receives the selection of the second option, and the audio to be played does not include the DD format audio, but includes the DDP format audio. Then, the display device can convert the audio of the DDP format into the audio of the DD format, or convert the audio into the DD format and the PCM format, and then transmit the audio of the DD format to the power amplifier device through the HDMI ARC.

In the above embodiments, the format in the second format set and the third format set may vary with the development of the technology. Therefore, preferably, the display device updates the second format set and the third format set in real time to update the format corresponding to each option in the option set.

For ease of understanding, the method of the embodiment of the present invention is described below in a practical application scenario.

The display device is specifically a television having a receiving side interface of HDMI, and the power amplifier device has a transmitting side interface of HDMI, and the television and the power amplifier device are connected by HDMI, and the television further includes a display screen and a control module located at the receiving side interface of the HMDI.

When the control module detects that the power amplifier device is powered on, the control module sends a CEC command to the power amplifier device to query whether the power amplifier device supports the HDMI ARC. When the control module determines that the power amplifier device supports the HDMI ARC, the display screen of the television displays a first option menu, the first option menu includes two options of turning on the HDMI ARC and turning off the HDMI ARC, and the first option menu is available, That is, the television can accept the selection of options within the first option menu. When the control module determines that the power amplifier device does not support HDMI ARC, the first option menu is not available, that is, the television does not accept selection of options in the first option menu. Specifically, as shown in FIG. 4, FIG. 4 is a schematic diagram of an embodiment of a first option menu.

When the first option menu is available, when the television receives the selection to turn on the HDMI ARC, the control module sends a CEC capability set query command to the power amplifier device, and the power amplifier device receives the command. A second format set is sent to the control module. The control module also obtains a format set of audio supported by the power amplifier device, that is, a third format set.

The control module receives the second set of formats, and determines an option included in the ARC mode menu according to the intersection of the second format set and the third format set. Specifically, in this embodiment, there are three formats of DDP, DD, and PCM in the intersection of the second format set and the third format set. Then, the display shows the ARC mode menu, which includes: Auto, DDP, DD, PCM four options. When the television receives the selection of the DD, before the next selection of another option for the ARC mode menu is received, the television determines the audio to be transmitted back to the power amplifier device according to the selected DD each time the audio is played. The format. Let's take a play as an example for explanation.

The television determines the format set of the audio to be played, that is, only the DDP and PCM formats are available in the first format set. Since the TV can convert the DDP format audio into the DD format audio or the DD format and the PCM format mixed audio, and the user selects the format to be returned as DD, the TV converts the DDP format audio in the upcoming audio. The audio is in DD format, and the audio in the DD format is transmitted back to the power amplifier device through the HDMI ARC.

The ARC control method in the embodiment of the present invention has been described above, and the control unit in the embodiment of the present invention is described below. Please refer to FIG. 5. FIG. 5 is a schematic structural diagram of an embodiment of a control unit according to the present invention. In this embodiment, the control unit 500 is located in a display device having a receiving side interface of HDMI. The control unit 500 includes:

The first obtaining module 501 is configured to acquire a first format set of the display device, where the first format set is a format set of audio to be played by the display device;

The second obtaining module 502 is configured to obtain a second format set, where the second format set is a format set that the power amplifier device supports decoding, the power amplifier device and the display device are connected by using an HDMI, and the power amplifier device is provided with an HDMI. The sending side interface, the intersection of the first format set and the second format set includes at least one format;

The third obtaining module 503 is configured to obtain a target format from the first format set according to the second format set, where the target format belongs to the second format set;

The backhaul module 504 is configured to return the audio of the target format to the power amplifier device through the HDMI audio return channel (ARC).

In this embodiment, the control unit obtains the decoded format set by the power amplifier device, that is, the second format set, and acquires the target format sound from the first format set according to the second format set. Frequency, and the target format belongs to the second format set. In this way, after the control unit returns the audio of the target format to the power amplifier device through the HDMI audio return channel (ARC), the power amplifier device can ensure the audio of the target format. This avoids situations where the amplifier device cannot play the received audio.

Optionally, in this embodiment, the third obtaining module 503 is specifically configured to select a target format from an intersection of the first format set and the second format set in a preset manner.

Optionally, in the embodiment, the third obtaining module 503 is specifically configured to obtain a priority level of a format of the intersection of the first format set and the second format set; and the first format set and The intersection of the second format set selects a format with a priority level of a preset level as the target format.

Optionally, in this embodiment, the control unit 500 further includes:

a determining module 505, configured to determine whether the power amplifier device supports HDMI ARC;

The second obtaining module 502 is specifically configured to acquire a second format set when the determining module determines that the power amplifier device supports the HDMI ARC.

The control unit in the embodiment of the present invention has been described above, and the display device in the embodiment of the present invention is described below. In this embodiment, the display device includes a receiving side interface of HDMI, and a control unit shown in FIG. 5.

Please refer to FIG. 6. FIG. 6 is a schematic structural diagram of another embodiment of a display device according to the present invention. In this embodiment, the display device 600 includes:

a control unit 601, the control unit 601 is the control unit shown in FIG. 5, and the control unit 601 includes the determining module and the fourth acquiring module;

The display unit 602 is configured to: when the determining module determines that the power amplifier device supports the HDMI ARC, display two options: turning on the HDMI ARC and turning off the HDMI ARC;

The second acquiring module in the control unit 601 is specifically configured to acquire a second format set when receiving the selection of the option to enable the HDMI ARC.

or,

Display device 600 includes:

The display unit 602 is configured to display two options: turning on the HDMI ARC and turning off the HDMI ARC;

Please refer to FIG. 7. FIG. 7 is a schematic structural diagram of another embodiment of a display device according to the present invention. In this embodiment, the display device 700 includes:

The control unit 701 is the control unit shown in FIG. 5, and the control unit 701 further includes a fourth obtaining module 7011, configured to acquire a third format set, where the third format set is the Display a format set of audio that the device supports to play;

The display unit 702 is configured to display an option set, where each option in the option set has a one-to-one correspondence with each format in the intersection of the second format set and the third format set;

The third acquiring module (not shown) of the control unit 701 is specifically configured to receive a selection of an option in the option set; when determining that a format corresponding to the selected option is located in the first format set, A format corresponding to the selected option is determined as the target format.

Optionally, the fourth obtaining module 7011 is further configured to obtain a priority level of a format of the intersection of the second format set and the third format set;

Optionally, the third obtaining module is further configured to: when the display device determines that the format corresponding to the selected option is not located in the first format set, from the first format set and the preset manner The intersection of the second format set selects the target format;

or,

The third obtaining module is further configured to: when the display device determines that a format corresponding to the selected option is not located in the first format set, and the first format set includes being convertible into the second format set When the first format of the second format is determined, the second format is determined as the target format, and the audio of the first format is converted into audio of the target format.

a display unit 702, configured to display a set of options, where the set of options includes a first option and a a second option, the first option corresponds to a first intersection, the second option corresponds to a second intersection, and the first intersection is an intersection of the second format set and the third format set, the second intersection For the intersection of the second format set and the third format set, only the format whose code rate is not greater than the preset value is supported;

The third acquiring module (not shown) of the control unit 702 is specifically configured to receive a selection of an option in the option set; when an intersection corresponding to the selected option intersects with the first format set The target format is selected from the set of intersections in a preset manner.

Optionally, the third obtaining module is further configured to: when the intersection corresponding to the selected option does not intersect with the first format set, from the first format set and the second format in a preset manner Select the target format in the intersection of the sets;

or,

Optionally, the display device in the present invention further includes an updating unit, configured to update a format corresponding to each option in the option set in real time.

The control unit and the display device in the embodiment of the present invention are described above from the perspective of the unitized functional entity. The control unit and the display device in the embodiment of the present invention are described below from the perspective of hardware processing.

Please refer to FIG. 8. FIG. 8 is a schematic structural diagram of an embodiment of a control chip according to the present invention. In this embodiment, the control chip 800 has a display device of the HDMI receiving side interface. The control chip 800 includes:

A first memory 801, one or more first processors 802, and one or more programs are included, wherein the one or more programs are stored in the first memory 801 and configured to be the one or more The first processor 802 executes;

The one or more first processors 802 are configured to execute:

Obtaining a first format set of the display device, where the first format set is a format set of audio to be played by the display device;

Obtaining a second format set, where the second format set is a format set that the power amplifier device supports decoding, the power amplifier device and the display device are connected by using an HDMI, and the power amplifier device is provided with an HDMI The sending side interface, the intersection of the first format set and the second format set includes at least one format;

In this embodiment, the control unit obtains the decoded format set by the power amplifier device, that is, the second format set, and obtains the audio of the target format from the first format set according to the second format set, and the target format It belongs to the second format set. In this way, after the control unit returns the audio of the target format to the power amplifier device through the HDMI audio return channel (ARC), the power amplifier device can ensure the audio of the target format, and the power amplifier device cannot be played. The case of the received audio.

Optionally, in this embodiment, the acquiring the target format from the first format set according to the second format set includes:

Optionally, in this embodiment, the selecting, by the display device, the target format from the intersection of the first format set and the second format set in a preset manner includes:

Optionally, in this embodiment,

The one or more first processors 802 are further configured to:

Determining whether the power amplifier device supports HDMI ARC;

The control chip in the embodiment of the present invention has been described above. The display device in the embodiment of the present invention is described below. In this embodiment, the display device includes a receiving side interface of HDMI, and a control chip shown in FIG.

Please refer to FIG. 9. FIG. 9 is a schematic structural diagram of an embodiment of a display device according to the present invention. In this embodiment, the display device 900 includes a receiving side interface of the HDMI, and the control chip shown in FIG.

a second memory 901, one or more second processors 902, and one or more programs, wherein the one or more programs are stored in the second memory 901 and configured to be the one or more The second process 902 is executed;

The one or more second processors 902 are configured to perform various schemes, and several of them are described below by way of example:

In a first aspect, the one or more second processors 902 are configured to perform:

The one or more first processors 802 are configured to execute:

In a second aspect, the one or more second processors 902 are configured to perform:

The one or more second processors 902 are configured to execute:

Display two options: turning on the HDMI ARC and turning off the HDMI ARC;

In a third aspect, the one or more first processors 802 are further configured to:

The display device also includes a second memory, one or more second processors 902, and one or more programs, wherein the one or more programs are stored in the second memory and configured to be Executing by one or more second processors 902;

The one or more second processors 902 are configured to execute:

Receiving a selection of an option in the set of options;

Of course, the third scheme can also be used together with the first or second scheme, and is not limited herein.

Optionally, in the third solution, the one or more first processors 802 are further configured to:

Optionally, in the third solution, the obtaining the target format from the first format set according to the second format set further includes:

or,

Please refer to FIG. 9. FIG. 9 is a schematic structural diagram of an embodiment of a display device according to the present invention. In this embodiment, the display device 900 includes a receiving side interface of HDMI, and a control chip shown in FIG.

The one or more first processors 802 are further configured to execute:

Display device 900 also includes a second memory, one or more second processors 902, and one or more programs, wherein the one or more programs are stored in the second memory and configured to be Or a plurality of second processors 902 executing;

The one or more second processors 902 are further configured to execute:

The display device receives a selection of an option in the set of options;

When the intersection corresponding to the selected option intersects with the first format set, according to a preset manner The target format is selected from the set of intersections.

Optionally, in this embodiment, the obtaining the target format from the first format set according to the second format set further includes:

or,

Optionally, in this embodiment, the one or more second processors 902 are further configured to:

It should be noted that, in the present invention, the one or more first processors 802 and the one or more second processors 902 may be the same processor, that is, the one or more first The steps performed by processor 802 and the steps performed by said one or more second processors 902 are all performed by the same processor.

A person skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In the several embodiments provided by the present application, it should be understood that the disclosed system, apparatus, and method may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. You can choose some or all of them according to actual needs. The unit is to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention, which is essential or contributes to the prior art, or all or part of the technical solution, may be embodied in the form of a software product stored in a storage medium. A number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that The technical solutions described in the embodiments are modified, or the equivalents of the technical features are replaced by the equivalents of the technical solutions of the embodiments of the present invention.

Claims

An audio return channel ARC control method, comprising:

Obtaining a first format set of the display device, where the display device has a receiving side interface of a high definition multimedia interface HDMI, and the first format set is a format set of audio to be played by the display device;

Obtaining a second format set, where the second format set is a format set that the power amplifier device supports decoding, the power amplifier device and the display device are connected by using an HDMI, and the power amplifier device is provided with a sending side interface of the HDMI, where the An intersection of a set of formats and the set of second formats includes at least one format;

Obtaining a target format from the first format set according to the second format set, wherein the target format belongs to the second format set;

The audio of the target format is passed back to the power amplifier device through the HDMI ARC.
The ARC control method according to claim 1, wherein the obtaining the target format from the first format set according to the second format set comprises:

The target format is selected from the intersection of the first format set and the second format set in a preset manner.
The ARC control method according to claim 2, wherein

The selecting, by the display device, the target format from the intersection of the first format set and the second format set in a preset manner includes:

Obtaining a priority level of a format of the intersection of the first format set and the second format set;

A format having a priority level of a preset level is selected from the intersection of the first format set and the second format set as the target format.
The ARC control method according to claim 1, wherein the obtaining the second format set further comprises:

Determining whether the power amplifier device supports HDMI ARC;

When it is determined that the power amplifier device supports the HDMI ARC, the second format set is acquired.
The ARC control method according to claim 4, wherein the execution body of the method is the display device; when it is determined that the power amplifier device supports the HDMI ARC, the method further includes:

The display device displays two options: turning on the HDMI ARC and turning off the HDMI ARC;

The display device acquires a second set of formats upon receiving a selection of the option to turn on the HDMI ARC.
The ARC control method according to claim 4, wherein the execution body of the method is the display device;

The method further includes:

The display device displays two options: turning on the HDMI ARC and turning off the HDMI ARC;

The two options are not available when the display device determines that the power amplifier device does not support HDMI ARC.
The ARC control method according to claim 1, wherein the execution subject of the method is the display device; the method further comprises:

The display device acquires a third format set, where the third format set is a format set of audio supported by the display device;

The display device displays a set of options, each of the options in the set of options is in one-to-one correspondence with each format in the intersection of the second format set and the third format set;

The obtaining the target format from the first format set according to the second format set includes:

The display device receives a selection of an option in the set of options;

When it is determined that the format corresponding to the selected option is located in the first format set, the display device determines a format corresponding to the selected option as the target format.
The ARC control method according to claim 7, wherein the method further comprises:

The display device acquires a priority level of a format of the intersection of the second format set and the third format set;

The set of options further includes an automatically selected option, wherein the automatically selected option corresponds to a format in which the intersection priority of the second format set and the third format is a preset level.
The ARC control method according to claim 7, wherein the obtaining the target format from the first format set according to the second format set further comprises:

When the display device determines that the format corresponding to the selected option is not located in the first format set, the display device selects a target from the intersection of the first format set and the second format set in a preset manner. format;

Or,

When the display device determines that the format corresponding to the selected option is not located in the first format set, and the first format set includes a first format that can be converted into the second format in the second format set, The display device determines the second format as the target format, and converts audio of the first format into audio of the target format.
The ARC control method according to claim 1, wherein the execution subject of the method is the display device; the method further comprises:

The display device acquires a third format set, where the third format set is a format set of audio supported by the display device;

The display device displays a set of options, wherein the set of options includes a first option corresponding to a first intersection, a second option corresponding to a second intersection, and the first intersection is the An intersection of the second format set and the third format set, where the second intersection is a format in which the intersection of the second format set and the third format set only supports a code rate not greater than a preset value;

The obtaining the target format from the first format set according to the second format set includes:

The display device receives a selection of an option in the set of options;

When the intersection corresponding to the selected option intersects the first format set, the target format is selected from the intersected sets in a preset manner.
The ARC control method according to claim 10, wherein the obtaining the target format from the first format set according to the second format set further comprises:

When the intersection corresponding to the selected option does not intersect with the first format set, the display device selects a target format from an intersection of the first format set and the second format set in a preset manner;

or,

When the intersection corresponding to the selected option does not intersect the first format set, and the first format set includes a first format that can be converted into a second format of the intersection corresponding to the selected option, The display device determines the second format as the target format, and converts audio of the first format into audio of the target format.
The ARC control method according to any one of claims 7 to 11, wherein the method further comprises:

The display device updates the format corresponding to each option in the option set in real time.
A control unit, the control unit being located at a display of a receiving side interface having HDMI Within the equipment, the control units obtained include:

a first acquiring module, configured to acquire a first format set of the display device, where the first format set is a format set of audio to be played by the display device;

a second acquiring module, configured to acquire a second format set, where the second format set is a format set that the power amplifier device supports decoding, the power amplifier device and the display device are connected by using an HDMI, and the power amplifier device is provided with an HDMI a sending side interface, where the intersection of the first format set and the second format set includes at least one format;

a third acquiring module, configured to acquire a target format from the first format set according to the second format set, where the target format belongs to the second format set;

a backhaul module, configured to transmit the audio of the target format to the power amplifier device through the HDMI ARC.
The control unit according to claim 13, wherein the third obtaining module is specifically configured to select a target format from an intersection of the first format set and the second format set in a preset manner.
The control unit according to claim 14, wherein the third obtaining module is specifically configured to acquire a priority level of a format of the intersection of the first format set and the second format set; The intersection of a format set and the second format set selects a format with a priority level of a preset level as the target format.
The control unit according to claim 13, wherein the control unit further comprises:

a determining module, configured to determine whether the power amplifier device supports HDMI ARC;

The second obtaining module is specifically configured to acquire a second format set when the determining module determines that the power amplifier device supports the HDMI ARC.
A display device characterized by comprising a receiving side interface of HDMI, and a control unit according to any one of claims 13 to 16.
The display device according to claim 17, wherein the display device specifically includes the control unit according to claim 16;

The display device further includes:

a display unit, configured to: when the determining module determines that the power amplifier device supports HDMI ARC, display two options: turning on the HDMI ARC and turning off the HDMI ARC;

The second obtaining module in the control unit is specifically configured to receive the When the HDMI ARC option is selected, the second format set is obtained.
The display device according to claim 17, wherein the display device specifically includes the control unit according to claim 16;

The display device further includes:

a display unit for displaying two options: turning on the HDMI ARC and turning off the HDMI ARC;

The two options are not available when the determining module determines that the power amplifier device does not support HDMI ARC.
The display device according to claim 17, wherein the display device further comprises a display unit;

The control unit further includes a fourth acquiring module, configured to acquire a third format set, where the third format set is a format set of audio supported by the display device;

The display unit is configured to display a set of options, each option in the set of options is in one-to-one correspondence with each format in an intersection of the second format set and the third format set;

The third acquiring module of the control unit is specifically configured to receive a selection of an option in the option set; when it is determined that a format corresponding to the selected option is located in the first format set, the selected option is The corresponding format is determined as the target format.
The display device according to claim 20, wherein the fourth obtaining module is further configured to acquire a priority level of a format of the intersection of the second format set and the third format set;

The set of options further includes an automatically selected option, wherein the automatically selected option corresponds to a format in which the intersection priority of the second format set and the third format is a preset level.
The display device according to claim 20, wherein the third obtaining module is further configured to: when the display device determines that the format corresponding to the selected option is not located in the first format set, according to a preset manner Selecting a target format from an intersection of the first format set and the second format set;

or,

The third obtaining module is further configured to: when the display device determines that a format corresponding to the selected option is not located in the first format set, and the first format set includes being convertible into the second format set When the first format of the second format is determined, the second format is determined as the target format, and the audio of the first format is converted into audio of the target format.
The display device according to claim 17, wherein the display device further comprises a display unit;

The control unit further includes a fourth acquiring module, configured to acquire a third format set, where the third format set is a format set of audio supported by the display device;

The display unit is configured to display a set of options, where the set of options includes a first option and a second option, where the first option corresponds to a first intersection, and the second option corresponds to a second intersection, where the first intersection is An intersection of the second format set and the third format set, where the second intersection is a format in which the intersection of the second format set and the third format set only supports a code rate not greater than a preset value;

The third acquiring module of the control unit is specifically configured to receive a selection of an option in the option set; when the intersection corresponding to the selected option intersects with the first format set, according to a preset manner The target format is selected from the set of intersections.
The display device according to claim 23, wherein the third obtaining module is further configured to: when the intersection corresponding to the selected option does not intersect with the first format set, from the preset manner The intersection of the first format set and the second format set selects a target format;

or,

The third obtaining module is further configured to: when the intersection corresponding to the selected option does not intersect with the first format set, and the first format set includes an intersection that can be converted into an intersection corresponding to the selected option When the first format of the second format is determined, the second format is determined as the target format, and the audio of the first format is converted into audio of the target format.
The display device according to any one of claims 20 to 24, wherein the display device further comprises:

An update unit, configured to update a format corresponding to each option in the option set in real time.