CN112738576B

CN112738576B - Display device and sound low-delay processing method

Info

Publication number: CN112738576B
Application number: CN201911033391.6A
Authority: CN
Inventors: 齐消消; 孙永瑞; 仲伟男
Original assignee: Hisense Visual Technology Co Ltd
Current assignee: Hisense Visual Technology Co Ltd
Priority date: 2019-10-28
Filing date: 2019-10-28
Publication date: 2023-03-21
Anticipated expiration: 2039-10-28
Also published as: CN112738576A

Abstract

The embodiment of the application shows a display device and a sound low-delay processing method, and is particularly suitable for a social television. The display device includes: the first chip comprises a first audio processor, receives audio data, performs audio mixing on multimedia audio data and human voice data in the audio data to obtain third audio data, and transmits the third audio data to the second chip through the HDMI or the network; and a second chip including a second audio processor receiving and processing the third audio data output from the first audio processor, and a sound reproducer receiving and reproducing the processed third audio data output from the second audio processor. The display device optimizes time consumption of audio data transmission through the first audio processor and the second audio processor, reduces delay of sound, reserves more time for 5G network transmission, and ensures low-delay experience effect of K song and wheat of the display device.

Description

Display device and sound low-delay processing method

Technical Field

The embodiment of the application relates to a display technology. And more particularly, to a display apparatus and a sound low-delay processing method.

Background

Currently, since a display device can provide a user with a play picture such as audio, video, picture, and the like, it is receiving a wide attention of the user. With the development of big data and artificial intelligence, the functional requirements of users on display devices are increasing day by day. For example, a user wants to interact with at least one other user in a karaoke application of a display device through video and voice, so that the requirement of 'watching while singing' is met.

In order to cater to the 5G network market and on a social television, in order to optimize the experience of the Karaoke, new requirements of the Karaoke are increased, the two parties in different places can sing in real time in the Karaoke, the two parties can sing one song at the same time, and audio data are transmitted to the opposite party APK through the 5G network and output after being processed. However, the delay of sound when the karaoke is connected with the microphone easily occurs in the karaoke application of the existing display device, which affects the use experience of the user.

Disclosure of Invention

In view of the above technical problems, an object of the present application is to provide a display device and a sound low-delay processing method.

A first aspect of embodiments of the present application shows a display device, including:

a first chip comprising a first audio processor configured to receive audio data, the audio data comprising multimedia audio data and human voice data;

mixing the multimedia audio data and the voice data to obtain third audio data, and transmitting the third audio data;

a second chip comprising a second audio processor configured to receive and process third audio data output from the first audio processor;

a sound reproducer configured to receive and reproduce the processed third audio data from the second audio processor output.

A second aspect of the embodiments of the present application shows a sound low-delay processing method, which is applied to a display device including: a sound reproducer, a first chip and a second chip;

the first chip receives audio data, wherein the audio data comprises multimedia audio data and human voice data;

mixing the multimedia audio data and the voice data to obtain third audio data, and outputting the third audio data to the second chip;

and the second chip receives and processes the third audio data and sends the processed third audio data to the sound reproducer.

As can be seen from the foregoing technical solutions, embodiments of the present application illustrate a display device and a sound low-delay processing method. On a social television with double systems, a first audio processor of a first chip receives multimedia audio data and human voice data, performs audio mixing on the received multimedia audio data and the human voice data to obtain third audio data, and transmits the third audio data to a second chip through an HDMI or a network; a second audio processor of the second chip receives and processes third audio data output by the first audio processor; the sound reproducer receives and reproduces the processed third audio data output from the second audio processor. This application handles multimedia audio data and voice data through first audio frequency treater and second audio frequency treater, optimizes audio data transmission's consuming time, reduces the delay of sound, reserves more time for 5G network transmission to guarantee K song even the low time delay of wheat experience effect.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic diagram illustrating an operation scenario between a display device and a control apparatus according to an embodiment;

fig. 2 is a block diagram exemplarily showing a hardware configuration of the control apparatus 100 according to the embodiment;

fig. 3 is a block diagram exemplarily showing a hardware configuration of the display device 200 according to the embodiment;

a block diagram of the hardware architecture of the display device 200 according to fig. 3 is exemplarily shown in fig. 4;

fig. 5 is a diagram exemplarily showing a functional configuration of the display device 200 according to the embodiment;

fig. 6a schematically shows a software configuration in the display device 200 according to an embodiment;

fig. 6b schematically shows a configuration of an application in the display device 200 according to an embodiment;

fig. 7 schematically shows a user interface in the display device 200 according to an embodiment;

FIG. 8 is a block diagram illustrating a display device in accordance with an alternative embodiment;

FIG. 9 is a block diagram illustrating a first audio processor in a display device in accordance with an alternative embodiment;

FIG. 10 is a block diagram illustrating a second audio processor in a display device in accordance with an alternative embodiment;

FIG. 11 is a diagram illustrating instability of the Karaoke delay;

FIG. 12 is a diagram illustrating optimized Karaoke delay stabilization for a display device according to an alternative embodiment;

FIG. 13 is a block diagram of another display device in accordance with an alternative embodiment;

fig. 14 is a flow diagram illustrating a method for low latency processing of sounds, according to an alternative embodiment.

Detailed Description

To make the objects, technical solutions and advantages of the exemplary embodiments of the present application clearer, the technical solutions in the exemplary embodiments of the present application will be clearly and completely described below with reference to the drawings in the exemplary embodiments of the present application, and it is obvious that the described exemplary embodiments are only a part of the embodiments of the present application, but not all the embodiments.

For the convenience of users, various external device interfaces are usually provided on the display device to facilitate connection of different peripheral devices or cables to implement corresponding functions. When a high-definition camera is connected to an interface of the display device, if a hardware system of the display device does not have a hardware interface of a high-pixel camera receiving the source code, data received by the camera cannot be displayed on a display screen of the display device.

Furthermore, due to the hardware structure, the hardware system of the conventional display device only supports one path of hard decoding resources, and usually only supports video decoding with a resolution of 4K at most, so when a user wants to perform video chat while watching a network television, the user needs to use the hard decoding resources (usually GPU in the hardware system) to decode the network video without reducing the definition of the network video screen, and in this case, the user can only process the video chat screen by using a general-purpose processor (e.g. CPU) in the hardware system to perform soft decoding on the video.

The soft decoding is adopted to process the video chat picture, so that the data processing burden of a CPU (central processing unit) can be greatly increased, and when the data processing burden of the CPU is too heavy, the problem of picture blocking or unsmooth flow can occur. Further, due to the data processing capability of the CPU, when the CPU performs soft decoding on the video chat screen, multi-channel video calls cannot be generally implemented, and when a user wants to perform video chat with multiple other users in the same chat scene, access is blocked.

In view of the above aspects, to overcome the above drawbacks, the present application discloses a dual hardware system architecture to implement multiple channels of video chat data (at least one channel of local video).

The concept to which the present application relates will be first explained below with reference to the drawings. It should be noted that the following descriptions of the concepts are only for the purpose of facilitating understanding of the contents of the present application, and do not represent limitations on the scope of the present application.

The term "module" as used in the various embodiments of the present application may refer to any known or later developed hardware, software, firmware, artificial intelligence, fuzzy logic, or combination of hardware and/or software code that is capable of performing the functionality associated with that element.

The term "remote control" as used in the embodiments of the present application refers to a component of an electronic device (such as the display device disclosed in the present application) that is capable of wirelessly controlling the electronic device, typically over a short distance. The component may typically be connected to the electronic device using infrared and/or Radio Frequency (RF) signals and/or bluetooth, and may also include functional modules such as WiFi, wireless USB, bluetooth, motion sensors, etc. For example: the hand-held touch remote controller replaces most of the physical built-in hard keys in the common remote control device with the user interface in the touch screen.

The term "gesture" as used in the embodiments of the present application refers to a user behavior used to express an intended idea, action, purpose, or result through a change in hand shape or an action such as hand movement.

The term "hardware system" used in the embodiments of the present application may refer to a physical component having computing, controlling, storing, inputting and outputting functions, which is formed by a mechanical, optical, electrical and magnetic device such as an Integrated Circuit (IC), a Printed Circuit Board (PCB) and the like. In various embodiments of the present application, a hardware system may also be referred to as a motherboard (or chip).

Fig. 1 is a schematic diagram illustrating an operation scenario between a display device and a control apparatus according to an embodiment. As shown in fig. 1, a user may operate the display apparatus 200 through the control device 100.

The control device 100 may be a remote controller 100A, which can communicate with the display device 200 through an infrared protocol communication, a bluetooth protocol communication, a ZigBee (ZigBee) protocol communication, or other short-range communication, and is used to control the display device 200 in a wireless or other wired manner. The user may input a user instruction through a key on a remote controller, voice input, control panel input, etc., to control the display apparatus 200. Such as: the user can input a corresponding control command through a volume up/down key, a channel control key, up/down/left/right moving keys, a voice input key, a menu key, a power on/off key, etc. on the remote controller, to implement the function of controlling the display device 200.

The control apparatus 100 may also be a smart device, such as a mobile terminal 100B, a tablet computer, a notebook computer, etc., which may communicate with the display device 200 through a Local Area Network (LAN), a Wide Area Network (WAN), a Wireless Local Area Network (WLAN), or other networks, and implement control of the display device 200 through an application program corresponding to the display device 200.

For example, the mobile terminal 100B and the display device 200 may each have a software application installed thereon, so that connection communication between the two can be realized through a network communication protocol, and the purpose of one-to-one control operation and data communication can be further realized. Such as: a control instruction protocol can be established between the mobile terminal 100B and the display device 200, a remote control keyboard is synchronized to the mobile terminal 100B, and the function of controlling the display device 200 is realized by controlling a user interface on the mobile terminal 100B; the audio and video content displayed on the mobile terminal 100B may also be transmitted to the display device 200, so as to implement a synchronous display function.

As shown in fig. 1, the display apparatus 200 may also perform data communication with the server 300 through various communication means. In various embodiments of the present application, the display device 200 may be allowed to be communicatively coupled to the server 300 via a local area network, a wireless local area network, or other network. The server 300 may provide various contents and interactions to the display apparatus 200.

Illustratively, the display device 200 receives software Program updates, or accesses a remotely stored digital media library, by sending and receiving information, and Electronic Program Guide (EPG) interactions. The servers 300 may be a group or groups, and may be one or more types of servers. Other web service contents such as a video on demand and an advertisement service are provided through the server 300.

The display device 200, in one aspect, may be a liquid crystal display, an OLED (Organic Light Emitting Diode) display, a projection display device; on the other hand, the display device can be a display system consisting of an intelligent television or a display and a set-top box. The specific display device type, size, resolution, etc. are not limiting, and those skilled in the art will appreciate that the display device 200 may be modified in performance and configuration as desired.

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. Examples include a web tv, a smart tv, an Internet Protocol Tv (IPTV), and the like. In some embodiments, the display device may not have a broadcast receiving television function.

As shown in fig. 1, a camera may be connected or disposed on the display device, and is used to present a picture taken by the camera on a display interface of the display device or other display devices, so as to implement interactive chat between users. Specifically, the picture shot by the camera can be displayed on the display device in a full screen mode, a half screen mode or any optional area.

As an optional connection mode, the camera is connected with the display rear shell through the connecting plate, is fixedly installed in the middle of the upper side of the display rear shell, and can be fixedly installed at any position of the display rear shell as an installable mode, so that an image acquisition area is ensured not to be shielded by the rear shell, for example, the display orientation of the image acquisition area is the same as that of the display equipment.

As another alternative connection mode, the camera is connected to the display rear shell through a connection board or other conceivable connector, the camera is capable of lifting, the connector is provided with a lifting motor, when a user wants to use the camera or an application program wants to use the camera, the camera is lifted out of the display, and when the camera is not needed, the camera can be embedded in the rear shell to protect the camera from being damaged.

As an embodiment, the camera adopted in the present application may have 1600 ten thousand pixels, so as to achieve the purpose of ultra high definition display. In actual use, cameras higher or lower than 1600 ten thousand pixels may also be used.

After the camera is installed on the display device, the contents displayed by different application scenes of the display device can be fused in various different modes, so that the function which cannot be realized by the traditional display device is achieved.

Illustratively, a user may conduct a video chat with at least one other user while watching a video program. The presentation of the video program may be as a background frame over which a window for video chat is displayed. The function is called 'chat while watching'.

Optionally, in a scene of "chat while watching", at least one video chat is performed across terminals while watching a live video or a network video.

In another example, a user can conduct a video chat with at least one other user while entering the educational application for learning. For example, a student may interact remotely with a teacher while learning content in an educational application. Vividly, the function can be called as 'chatting while learning'.

In another example, a user conducts a video chat with a player entering a card game while playing the game. For example, a player may enable remote interaction with other players when entering a gaming application to participate in a game. Figuratively, this function may be referred to as "watch while playing".

Optionally, the game scene is fused with the video picture, the portrait in the video picture is scratched and displayed in the game picture, and the user experience is improved.

Optionally, in the motion sensing game (such as ball hitting, boxing, running and dancing), the human posture and motion, limb detection and tracking and human skeleton key point data detection are obtained through the camera, and then the human posture and motion, the limb detection and tracking and the human skeleton key point data detection are fused with the animation in the game, so that the game of scenes such as sports and dancing is realized.

In another example, a user may interact with at least one other user in a karaoke application in video and voice. Vividly, this function can be called "sing while watching". Optionally, when at least one user enters the application in a chat scenario, multiple users can jointly complete recording of a song.

In another example, a user may turn on a camera locally to take pictures and videos, figurative, which may be referred to as "looking into the mirror".

In other examples, more or less functionality may be added. The function of the display device is not particularly limited in the present application.

Fig. 2 is a block diagram schematically showing the configuration of the control apparatus 100 according to the exemplary embodiment. As shown in fig. 2, the control device 100 includes a controller 110, a communicator 130, a user input/output interface 140, a memory 190, and a power supply 180.

The control apparatus 100 is configured to control the display device 200, and to receive an input operation command from a user, and to convert the operation command into a command recognizable and responsive to the display device 200, thereby mediating interaction between the user and the display device 200. Such as: the user operates the channel up/down key on the control device 100, and the display device 200 responds to the channel up/down operation.

In some embodiments, the control device 100 may be a smart device. Such as: the control apparatus 100 may install various applications that control the display device 200 according to user demands.

In some embodiments, as shown in fig. 1, the mobile terminal 100B or other intelligent electronic device may function similar to the control apparatus 100 after installing an application for manipulating the display device 200. Such as: the user may implement the functions of controlling the physical keys of the apparatus 100 by installing applications, various function keys or virtual buttons of a graphical user interface available on the mobile terminal 100B or other intelligent electronic devices.

The controller 110 includes a processor 112, a RAM113 and a ROM114, a communication interface, and a communication bus. The controller 110 is used to control the operation of the control device 100, as well as the internal components for communication and coordination and external and internal data processing functions.

The communicator 130 enables communication of control signals and data signals with the display apparatus 200 under the control of the controller 110. Such as: the received user input signal is transmitted to the display apparatus 200. The communicator 130 may include at least one of a WIFI module 131, a bluetooth module 132, an NFC module 133, and the like.

A user input/output interface 140, wherein the input interface includes at least one of a microphone 141, a touch pad 142, a sensor 143, a key 144, and the like. Such as: the user can realize a user instruction input function through actions such as voice, touch, gesture, pressing, and the like, and the input interface converts the received analog signal into a digital signal and converts the digital signal into a corresponding instruction signal, and sends the instruction signal to the display device 200.

The output interface includes an interface that transmits the received user instruction to the display apparatus 200. In some embodiments, it may be an infrared interface or a radio frequency interface. Such as: when the infrared signal interface is used, the user input instruction needs to be converted into an infrared control signal according to an infrared control protocol, and the infrared control signal is sent to the display device 200 through the infrared sending module. The following steps are repeated: when the rf signal interface is used, a user input command needs to be converted into a digital signal, and then the digital signal is modulated according to the rf control signal modulation protocol and then transmitted to the display device 200 through the rf transmitting terminal.

In some embodiments, the control device 100 includes at least one of a communicator 130 and an output interface. The communicator 130 is configured in the control device 100, such as: the modules of WIFI, bluetooth, NFC, etc. may send the user input command to the display device 200 through the WIFI protocol, or the bluetooth protocol, or the NFC protocol code.

And a memory 190 for storing various operation programs, data and applications for driving and controlling the control apparatus 100 under the control of the controller 110. The memory 190 may store various control signal commands input by a user.

And a power supply 180 for providing operational power support to the components of the control device 100 under the control of the controller 110. A battery and associated control circuitry.

A hardware configuration block diagram of a hardware system in the display apparatus 200 according to an exemplary embodiment is exemplarily shown in fig. 3.

When a dual hardware system architecture is adopted, the mechanism relationship of the hardware system can be shown in fig. 3. For convenience of description, one hardware system in the dual hardware system architecture will be referred to as a first hardware system or a system, a-chip, and the other hardware system will be referred to as a second hardware system or N-system, N-chip. The chip A comprises a controller of the chip A and various modules connected with the controller of the chip A through various interfaces, and the chip N comprises a controller of the chip N and various modules connected with the controller of the chip N through various interfaces. The chip a and the chip N may each have a relatively independent operating system, and the operating system of the chip a and the operating system of the chip N may communicate with each other through a communication protocol, which is as follows: the frame layer of the operating system of the a-chip and the frame layer of the operating system of the N-chip can communicate to transmit commands and data, so that two independent subsystems, which are associated with each other, exist in the display device 200.

As shown in fig. 3, the a chip and the N chip may be connected, communicated and powered through a plurality of different types of interfaces. The interface type of the interface between the a chip and the N chip may include a General-purpose input/output (GPIO) interface, a USB interface, an HDMI interface, a UART interface, and the like. One or more of these interfaces may be used for communication or power transfer between the a-chip and the N-chip. For example, as shown in fig. 3, in the dual hardware system architecture, the N chip may be powered by an external power source (power), and the a chip may not be powered by the external power source but by the N chip.

In addition to the interface for connecting with the N chip, the a chip may further include an interface for connecting other devices or components, such as an MIPI interface for connecting a Camera (Camera) shown in fig. 3, a bluetooth interface, and the like.

Similarly, in addition to the interface for connecting with the N chip, the N chip may further include a VBY interface for connecting with a display screen TCON (Timer Control Register), and an i2S interface for connecting with a power Amplifier (AMP) and a Speaker (Speaker); and an IR/Key interface, a USB interface, a Wifi interface, a bluetooth interface, an HDMI interface, a Tuner interface, and the like.

The dual hardware system architecture of the present application is further described below with reference to fig. 4. It should be noted that fig. 4 is only an exemplary illustration of the dual hardware system architecture of the present application, and does not represent a limitation of the present application. In actual practice, both hardware systems may contain more or less hardware or interfaces as desired.

A block diagram of the hardware architecture of the display device 200 according to fig. 3 is exemplarily shown in fig. 4. As shown in fig. 4, the hardware system of the display device 200 may include an a chip and an N chip, and a module connected to the a chip or the N chip through various interfaces.

The N-chip may include a tuner demodulator 220, a communicator 230, an external device interface 250, a controller 210, a memory 290, a chat input interface, a video processor 260-1, a display 280, an audio output interface 270, and a power supply. The N-chip may also include more or fewer modules in other embodiments.

The tuning demodulator 220 is configured to perform modulation and demodulation processing such as amplification, mixing, resonance and the like on a broadcast television signal received in a wired or wireless manner, so as to demodulate an audio/video signal carried in a frequency of a television channel selected by a user and additional information (e.g., an EPG data signal) from a plurality of wireless or wired broadcast television signals. Depending on the broadcast system of the television signal, the signal path of the tuner 220 may be various, such as: terrestrial broadcasting, cable broadcasting, satellite broadcasting, internet broadcasting, or the like; according to different modulation types, the adjustment mode of the signal can be a digital modulation mode or an analog modulation mode; and depending on the type of television signal being received, tuner demodulator 220 may demodulate analog and/or digital signals.

The tuner demodulator 220 is also operative to respond to the user-selected television channel frequency and the television signals carried thereby, in accordance with the user selection, and as controlled by the controller 210.

In other exemplary embodiments, the tuning demodulator 220 may be in an external device, such as an external set-top box. In this way, the set-top box outputs television audio and video signals after modulation and demodulation, and the television audio and video signals are input into the display device 200 through the external device interface 250.

The communicator 230 is a component for communicating with an external device or an external server according to various communication protocol types. For example: the communicator 230 may include a WIFI module 231, a bluetooth communication protocol module 232, a wired ethernet communication protocol module 233, and other network communication protocol modules such as an infrared communication protocol module or a near field communication protocol module.

The display apparatus 200 may establish a connection of a control signal and a data signal with an external control apparatus or a content providing apparatus through the communicator 230. For example, the communicator may receive a control signal of the remote controller 100A according to the control of the controller.

The external device interface 250 is a component for providing data transmission between the N-chip controller and the a-chip and other external devices. The external device interface may be connected with an external apparatus such as a set-top box, a game device, a notebook computer, etc. in a wired/wireless manner, and may receive data such as a video signal (e.g., moving image), an audio signal (e.g., music), additional information (e.g., EPG), etc. of the external apparatus.

The external device interface 250 may include: a High Definition Multimedia Interface (HDMI) terminal is also referred to as HDMI251, a Composite Video Blanking Sync (CVBS) terminal is also referred to as AV252, an analog or digital component terminal is also referred to as component 253, a Universal Serial Bus (USB) terminal 254, a Red Green Blue (RGB) terminal (not shown in the figure), and the like. The number and type of external device interfaces are not limited by this application.

The controller 210 controls the operation of the display device 200 and responds to the user's operation by running various software control programs (e.g., an operating system and/or various application programs) stored on the memory 290.

As shown in fig. 4, the controller 210 includes a read only memory ROM213, a random access memory RAM214, a graphics processor 216, a CPU processor 212, a communication interface 218, and a communication bus. The ROM213 and the RAM214, the graphic processor 216, the CPU processor 212, and the communication interface 218 are connected via a bus.

A ROM213 for storing instructions for various system boots. If the display device 200 is powered on upon receipt of the power-on signal, the CPU processor 212 executes a system boot instruction in the ROM and copies the operating system stored in the memory 290 to the RAM214 to start running the boot operating system. After the start of the operating system is completed, the CPU processor 212 copies the various application programs in the memory 290 to the RAM214, and then starts running and starting the various application programs.

A graphics processor 216 for generating various graphics objects, such as: icons, operation menus, user input instruction display graphics, and the like. The display device comprises an arithmetic unit which carries out operation by receiving various interactive instructions input by a user and displays various objects according to display attributes. And a renderer for generating various objects based on the operator and displaying the rendered result on the display 280.

A CPU processor 212 for executing operating system and application program instructions stored in memory 290. And executing various application programs, data and contents according to various interactive instructions received from the outside so as to finally display and play various audio and video contents.

In some exemplary embodiments, the CPU processor 212 may include a plurality of processors. The plurality of processors may include a main processor and a plurality of or a sub-processor. A main processor for performing some operations of the display apparatus 200 in a pre-power-up mode and/or operations of displaying a screen in a normal mode. A plurality of or one sub-processor for performing an operation in a standby mode or the like.

The communication interfaces may include a first interface 218-1 through an nth interface 218-n. These interfaces may be network interfaces that are connected to external devices via a network.

The controller 210 may control the overall operation of the display apparatus 200. For example: in response to receiving a user command for selecting a UI object displayed on the display 280, the controller 210 may perform an operation related to the object selected by the user command.

Wherein the object may be any one of selectable objects, such as a hyperlink or an icon. Operations related to the selected object, such as: displaying an operation connected to a hyperlink page, document, image, or the like, or performing an operation of a program corresponding to an icon. The user command for selecting the UI object may be a command input through various input means (e.g., a mouse, a keyboard, a touch pad, etc.) connected to the display apparatus 200 or a voice command corresponding to a voice spoken by the user.

The memory 290 includes a memory for storing various software modules for driving and controlling the display apparatus 200. Such as: various software modules stored in memory 290, including: the system comprises a basic module, a detection module, a communication module, a display control module, a browser module, various service modules and the like.

The basic module is a bottom layer software module used for signal communication between hardware in the display device 200 and sending processing and control signals to an upper layer module. The detection module is a management module used for collecting various information from various sensors or chat input interfaces, and performing digital-to-analog conversion and analysis management.

For example: the voice recognition module comprises a voice analysis module and a voice instruction database module. The display control module is a module for controlling the display 280 to display image content, and may be used to play information such as multimedia image content and UI interface. The communication module is used for carrying out control and data communication with external equipment. And the browser module is used for executing data communication between the browsing servers. The service module is a module for providing various services and various applications.

Meanwhile, the memory 290 is also used to store visual effect maps and the like for receiving external data and user data, images of respective items in various user interfaces, and a focus object.

A chat input interface for transmitting an input signal of the user to the controller 210 or transmitting a signal output from the controller to the user. For example, the control device (e.g., a mobile terminal or a remote controller) may send an input signal, such as a power switch signal, a channel selection signal, a volume adjustment signal, etc., input by a user to the chat input interface, and then the input signal is transferred to the controller through the chat input interface; alternatively, the control device may receive an output signal such as audio, video or data output from the chat input interface via the controller, and display the received output signal or output the received output signal in audio or vibration form.

In some embodiments, the user may enter user commands on a Graphical User Interface (GUI) displayed on the display 280, and the chat input interface receives the user input commands through the Graphical User Interface (GUI). Alternatively, the user may input the user command by inputting a specific sound or gesture, and the chat input interface receives the user input command by recognizing the sound or gesture through the sensor.

The video processor 260-1 is configured to receive a video signal, and perform video data processing such as decompression, decoding, scaling, noise reduction, frame rate conversion, resolution conversion, and image synthesis according to a standard codec protocol of the input signal, so as to obtain a video signal that is directly displayed or played on the display 280.

Illustratively, the video processor 260-1 includes a demultiplexing module, a video decoding module, an image synthesizing module, a frame rate conversion module, a display formatting module, and the like.

The demultiplexing module is used for demultiplexing the input audio and video data stream, and if the input MPEG-2 is input, the demultiplexing module demultiplexes the input audio and video data stream into a video signal, an audio signal and the like.

And the video decoding module is used for processing the demultiplexed video signal, including decoding, scaling and the like.

And the image synthesis module, such as an image synthesizer, is used for performing superposition mixing processing on the GUI signal input by the user or generated by the user and the video picture after the zooming processing by the graphics generator so as to generate an image signal for display.

The frame rate conversion module is configured to convert a frame rate of an input video, such as a 24Hz, 25Hz, 30Hz, or 60Hz video, into a 60Hz, 120Hz, or 240Hz frame rate, where the input frame rate may be related to a source video stream, and the output frame rate may be related to an update rate of a display. The input is realized in a common format by using a frame insertion mode.

And a display formatting module for converting the signal output by the frame rate conversion module into a signal conforming to a display format of a display, such as converting the format of the signal output by the frame rate conversion module to output an RGB data signal.

And a display 280 for receiving the image signal input from the video processor 260-1 and displaying the video content and image and the menu manipulation interface. The display 280 includes a display component for presenting a picture and a driving component for driving the display of an image. The video content may be displayed from the video in the broadcast signal received by the tuner/demodulator 220, or from the video content input from the communicator or the external device interface. The display 280 simultaneously displays a user manipulation interface UI generated in the display apparatus 200 and used to control the display apparatus 200.

And, a driving component for driving the display according to the type of the display 280. Alternatively, in case the display 280 is a projection display, it may also comprise a projection device and a projection screen.

Resulting in an audio signal that can be played in the speaker 272.

The audio output interface 270, for outputting audio output under the control of the controller 210, may include a speaker 272, or an external sound output terminal 274 to output to a generating device of an external device, such as: external sound terminal or earphone output terminal etc..

In other exemplary embodiments, video processor 260-1 may comprise one or more chip components.

And, in other exemplary embodiments, the video processor 260-1 may be a separate chip or may be integrated with the controller 210 in one or more chips.

And a power supply for supplying power supply support to the display apparatus 200 from the power input from the external power source under the control of the controller 210. The power supply may include a built-in power supply circuit installed inside the display apparatus 200, or may be a power supply installed outside the display apparatus 200, such as a power supply interface for providing an external power supply in the display apparatus 200.

Similar to the N-chip, as shown in fig. 4, the a-chip may include a controller 310, a communicator 330, a detector 340, and a memory 390. In some embodiments, a chat input interface, a video processor, an audio processor, a display, an audio output interface may also be included. In some embodiments, there may also be a power supply that independently powers the A-chip.

The communicator 330 is a component for communicating with an external device or an external server according to various communication protocol types. For example: the communicator 330 may include a WIFI module 331, a bluetooth communication protocol module 332, a wired ethernet communication protocol module 333, and other network communication protocol modules such as an infrared communication protocol module or a near field communication protocol module.

The communicator 330 of the a-chip and the communicator 230 of the N-chip also interact with each other. For example, the WiFi module 231 within the N-chip hardware system is used to connect to an external network, generate network communication with an external server, and the like. The WiFi module 331 in the a-chip hardware system is used to connect to the N-chip WiFi module 231 without generating a direct connection with an external network, and the a-chip is connected to an external network through the N-chip. Therefore, for the user, a display device as in the above embodiment displays a WiFi account to the outside.

The detector 340 is a component of the display device a chip for collecting signals of an external environment or interacting with the outside. The detector 340 may include a light receiver 342, a sensor for collecting the intensity of ambient light, which may be used to adapt to display parameter changes, etc.; the system may further include an image collector 341, such as a camera, a video camera, etc., which may be configured to collect external environment scenes, collect attributes of the user or interact gestures with the user, adaptively change display parameters, and identify user gestures, so as to implement a function of interaction with the user.

An external device interface 350, which provides a component for data transmission between the controller 310 and the N-chip or other external devices. The external device interface may be connected with an external apparatus such as a set-top box, a game device, a notebook computer, etc. in a wired/wireless manner.

A video processor 360-1 for processing the associated video signal.

An audio processor 360-2 for processing the associated audio signal

The controller 310 controls the operation of the display device 200 and responds to the user's operation by running various software control programs stored on the memory 390 (e.g., using installed third party applications, etc.), and interacting with the N-chip.

As shown in fig. 4, the controller 310 includes a read only memory ROM313, a random access memory RAM314, a graphics processor 316, a CPU processor 312, a communication interface 318, and a communication bus. The ROM313 and the RAM314, the graphic processor 316, the CPU processor 312, and the communication interface 318 are connected via a bus.

A ROM313 for storing instructions for various system boots. CPU processor 312 executes system boot instructions in ROM and copies the operating system stored in memory 390 to RAM314 to begin running the boot operating system. After the start of the operating system is completed, the CPU processor 312 copies various application programs in the memory 390 to the RAM314, and then starts running and starting various application programs.

The CPU processor 312 is used for executing the operating system and application program instructions stored in the memory 390, communicating with the N chip, transmitting and interacting signals, data, instructions, etc., and executing various application programs, data and contents according to various interaction instructions received from the outside, so as to finally display and play various audio and video contents.

The communication interface 318 is plural. These interfaces may be network interfaces connected to external devices via a network, or may be network interfaces connected to the N-chip via a network.

And an audio processor 360-2, configured to receive the audio signal, decompress and decode the audio signal according to a standard encoding and decoding protocol of the input signal, and perform audio data processing such as noise reduction, digital-to-analog conversion, and amplification processing.

The controller 310 may control the overall operation of the display apparatus 200. For example: in response to receiving a user command for selecting a UI object to be displayed on the display 280, the controller 210 may perform an operation related to the object selected by the user command.

A graphics processor 316 for generating various graphics objects, such as: icons, operation menus, user input instruction display graphics, and the like. The display device comprises an arithmetic unit which carries out operation by receiving various interactive instructions input by a user and displays various objects according to display attributes. And a renderer for generating various objects based on the operator and displaying the rendered result on the display 280.

Both the A-chip graphics processor 316 and the N-chip graphics processor 216 are capable of generating various graphics objects. In distinction, if application 1 is installed on the a-chip and application 2 is installed on the N-chip, the a-chip graphics processor 316 generates a graphics object when a user performs a command input by the user in application 1 at the interface of application 1. When a user makes a command input by the user in the interface of the application 2 and within the application 2, a graphic object is generated by the graphic processor 216 of the N chip.

Fig. 5 is a diagram schematically illustrating a functional configuration of a display device according to an exemplary embodiment.

As shown in fig. 5, the memory 390 of the a-chip and the memory 290 of the N-chip are used to store an operating system, an application program, contents, user data, and the like, respectively, and perform system operations for driving the display device 200 and various operations in response to a user under the control of the controller 310 of the a-chip and the controller 210 of the N-chip. The A-chip memory 390 and the N-chip memory 290 can include volatile and/or non-volatile memory.

The memory 290 is specifically configured to store an operating program for driving the controller 210 in the display device 200, and store various applications installed in the display device 200, various applications downloaded by a user from an external device, various graphical user interfaces related to the applications, various objects related to the graphical user interfaces, user data information, and internal data of various supported applications. The memory 290 is used to store system software such as an Operating System (OS) kernel, middleware, and applications, and to store input video data and audio data, and other user data.

The memory 290 is specifically used for storing drivers and related data such as the video processor 260-1, the display 280, the communicator 230, the tuner demodulator 220, the input/output interface, etc.

In some embodiments, memory 290 may store software and/or programs, software programs for representing an Operating System (OS) including, for example: a kernel, middleware, an Application Programming Interface (API), and/or an application program. For example, the kernel may control or manage system resources, or functions implemented by other programs (e.g., the middleware, APIs, or applications), and the kernel may provide interfaces to allow the middleware and APIs, or applications, to access the controller to implement controlling or managing system resources.

The memory 290, for example, includes a broadcast receiving module 2901, a channel control module 2902, a volume control module 2903, an image control module 2904, a display control module 2905, a first audio control module 2906, an external instruction recognition module 2907, a communication control module 2908, a light receiving module 2909, a power control module 2910, an operating system 2911, and other applications 2912, a browser module, and the like. The controller 210 performs functions such as: the system comprises a broadcast television signal receiving and demodulating function, a television channel selection control function, a volume selection control function, an image control function, a display control function, an audio control function, an external instruction identification function, a communication control function, an optical signal receiving function, an electric power control function, a software control platform supporting various functions, a browser function and other various functions.

The memory 390 includes a memory storing various software modules for driving and controlling the display apparatus 200. Such as: various software modules stored in memory 390, including: the system comprises a basic module, a detection module, a communication module, a display control module, a browser module, various service modules and the like. Since the functions of the memory 390 and the memory 290 are similar, reference may be made to the memory 290 for relevant points, and thus, detailed description thereof is omitted here.

Illustratively, the memory 390 includes an image control module 3904, a second audio control module 3906, an external instruction recognition module 3907, a communication control module 3908, a light receiving module 3909, an operating system 3911, and other application programs 3912, a browser module, and the like. The controller 210 performs functions such as: the system comprises an image control function, a display control function, an audio control function, an external instruction identification function, a communication control function, an optical signal receiving function, an electric power control function, a software control platform supporting various functions, a browser function and other various functions.

Differently, the external instruction recognition module 2907 of the N-chip and the external instruction recognition module 3907 of the a-chip can recognize different instructions.

Illustratively, since the image receiving device such as a camera is connected with the a-chip, the external instruction recognition module 3907 of the a-chip may include an image recognition module 3907-1, a graphic database is stored in the image recognition module 3907-1, and when the camera receives an external graphic instruction, the camera corresponds to the instruction in the graphic database to perform instruction control on the display device. Since the voice receiving device and the remote controller are connected to the N-chip, the external command recognition module 2907 of the N-chip may include a voice recognition module 2907-2, a voice database is stored in the voice recognition module 2907-2, and when the voice receiving device receives an external voice command or the like, the voice receiving device and the like perform a corresponding relationship with a command in the voice database to perform command control on the display device. Similarly, a control device 100 such as a remote controller is connected to the N-chip, and the key command recognition module 2907-3 performs command interaction with the control device 100.

A block diagram of the configuration of the software system in the display device 200 according to an exemplary embodiment is exemplarily shown in fig. 6 a.

For an N-chip, as shown in fig. 6a, the operating system 2911, which includes executing operating software for handling various basic system services and for performing hardware related tasks, serves as an intermediary between applications and hardware components for data processing.

In some embodiments, portions of the operating system kernel may contain a series of software to manage the display device hardware resources and provide services to other programs or software code.

In other embodiments, portions of the operating system kernel may include one or more device drivers, which may be a set of software code in the operating system that assists in operating or controlling the devices or hardware associated with the display device. The drivers may contain code that operates the video, audio, and/or other multimedia components. Examples include a display, a camera, flash, wiFi, and audio drivers.

The accessibility module 2911-1 is configured to modify or access the application program to achieve accessibility and operability of the application program for displaying content.

A communication module 2911-2 for connection to other peripherals via associated communication interfaces and a communication network.

The user interface module 2911-3 is configured to provide an object for displaying a user interface, so that each application program can access the object, and user operability can be achieved.

Control applications 2911-4 for controlling process management, including runtime applications and the like.

The event transmission system 2914 may be implemented in the operating system 2911 or in the application 2912. In some embodiments, an aspect is implemented within the operating system 2911, while implemented in the application 2912, for listening for various user input events, and will implement one or more sets of predefined operations in response to various events referring to the recognition of various types of events or sub-events.

The event monitoring module 2914-1 is configured to monitor an event or a sub-event input by the chat input interface.

The event recognition module 2914-2 is configured to input definitions of various types of events into various chat input interfaces, recognize various events or sub-events, and transmit the events or sub-events to the processes for executing one or more corresponding sets of processes.

The event or sub-event refers to an input detected by one or more sensors in the display device 200 and an input of an external control device (e.g., the control apparatus 100). Such as: the method comprises the following steps of inputting various sub-events through voice, inputting a gesture sub-event through gesture recognition, inputting a remote control key command of a control device and the like. Illustratively, the one or more sub-events in the remote control include a variety of forms including, but not limited to, one or a combination of key presses up/down/left/right/, ok keys, key presses, and the like. And non-physical key operations such as move, hold, release, etc.

The interface layout management module 2913, directly or indirectly receiving the input events or sub-events from the event transmission system 2914, monitors the input events or sub-events, and updates the layout of the user interface, including but not limited to the position of each control or sub-control in the interface, and the size, position, and level of the container, which are related to the layout of the interface.

Since the functions of the operating system 3911 of the a chip are similar to those of the operating system 2911 of the N chip, reference may be made to the operating system 2911 for relevant points, and details are not repeated here.

As shown in fig. 6b, the application layer of the display device contains various applications that can be executed at the display device 200.

The N-chip application layer 2912 may include, but is not limited to, one or more applications such as: a video-on-demand application, an application center, a game application, and the like. The application layer 3912 of the a-chip may include, but is not limited to, one or more applications such as: live television applications, media center applications, and the like. It should be noted that what applications are respectively contained in the a chip and the N chip is determined according to an operating system and other designs, and the present invention does not need to make specific limitations and divisions on the applications contained in the a chip and the N chip.

The live television application program can provide live television through different signal sources. For example, a live television application may provide television signals using input from cable television, radio broadcasts, satellite services, or other types of live television services. And, the live television application may display video of the live television signal on the display device 200.

A video-on-demand application may provide video from different storage sources. Unlike live television applications, video on demand provides a video display from some storage source. For example, the video on demand may come from a server side of the cloud storage, from a local hard disk storage containing stored video programs.

The media center application program can provide various applications for playing multimedia contents. For example, a media center, which may be other than live television or video on demand, may provide services for a user to access various images or audio through a multimedia center application.

The application program center can provide and store various application programs. The application may be a game, an application, or some other application associated with a computer system or other device that may be run on a display device. The application center may obtain these applications from different sources, store them in local storage, and then be operable on the display device 200.

A schematic diagram of a user interface in a display device 200 according to an exemplary embodiment is illustrated in fig. 7. As shown in fig. 7, the user interface includes a plurality of view display areas, illustratively, a first view display area 221 and a play screen 222, wherein the play screen includes a layout of one or more different items. And a selector is included in the user interface indicating that an item is selected, the position of the selector being movable by user input to change the selection of a different item.

It should be noted that the multiple view display areas may present display screens in different levels. For example, a first view display area may present video chat project content and a second view display area may present application layer project content (e.g., web page video, VOD presentations, application screens, etc.).

Optionally, the different view display areas are presented with different priorities, and the display priorities of the view display areas are different among the view display areas with different priorities. If the priority of the system layer is higher than that of the application layer, when the user uses the acquisition selector and picture switching in the application layer, the picture display of the view display area of the system layer is not blocked; and when the size and the position of the view display area of the application layer are changed according to the selection of the user, the size and the position of the view display area of the system layer are not influenced.

Based on the requirement of the user for 'singing while watching', a microphone can be arranged on the display device, and the voice data of the user can be collected through the microphone. In practical application, data in the A chip and the N chip are mainly output through a network, HDMI and USB, the USB mainly has the function of transmitting image data of the camera to the N chip through the USB, the network interface mainly has the function that the N chip and the A chip can be simultaneously connected to the Internet, keys of the remote controller are also transmitted to the A chip through the Internet interface, the HDMI mainly transmits audio and video data in the A chip to the N chip through the HDMI interface, and the HDMI is not open to a user.

On a social television, the android application is installed in the chip A, the chip A only bears the transparent transmission function of sound, and sound effect processing is not carried out on the sound; the N chips mainly play the display of images and the processing and playing of sound. Therefore, when a user plays a song on the display device, the A chip transmits the received audio data to the N chip through the 5G network for processing and then outputting, but the transmission rate of the 5G network cannot be confirmed at present, more time is reserved for network transmission, the time consumed by playing the song on the television needs to be compressed as much as possible, and the low-delay experience effect of the song and the microphone functions is guaranteed.

Based on the above technical problem, the present application illustrates a display device provided in a first aspect, and as shown in fig. 8, a display device provided in an embodiment of the present application includes: a first chip 101, a second chip 201 and a sound reproducer 301, wherein,

the first chip 101 includes a first audio processor 101-1, and the first audio processor 101-1 is configured to receive audio data, where the audio data includes multimedia audio data and human voice data, mix the multimedia audio data and the human voice data to obtain third audio data, and transmit the third audio data. In this example, the multimedia audio data is audio data derived from a network or locally stored audio data, such as accompaniment sounds of music played by a television.

The second chip 201 includes a second audio processor 201-2, and the second audio processor 201-2 is configured to receive and process third audio data output from the first audio processor 101-1.

A sound reproducer 301 configured to receive and reproduce the processed third audio data output from the second audio processor 201-2.

Here, for convenience of description, the first chip in fig. 4 and 5 corresponds to the first chip 101 in fig. 8, the second chip in fig. 4 and 5 corresponds to the second chip 201 in fig. 8, and the speaker 272 in fig. 4 corresponds to the sound reproducer 301 in fig. 8, which will not be described below.

Due to the fact that the technical scheme shown in the embodiment of the application is suitable for the application scene of 'sing while watching', delay is prone to occurring when the display device transmits audio data under the application scene of 'sing while watching', time consumed for K songs on a television is long, and the low-delay experience effect of the function of the K songs and the microphone is affected. Based on the above problems, the scheme shown in the application optimizes the time consumption of audio transmission through the first audio processor of the first chip and the second audio processor of the second chip, and reduces the delay of sound so as to meet the low-delay requirements of karaoke and the like.

The following describes the processing of audio data in detail.

As shown in fig. 9, the first audio processor 101-1 is provided with a USB interface 1011, a USB buffer 1012, a recording alsa node 1013, an APK1014, a playing alsa node 1015, and an audio output interface 1016, which are connected in sequence, wherein an external Microphone (MIC) is connected to the USB interface 1011, that is, the external Microphone (MIC) collects voice data of a user, and sends the voice data into the first audio processor 101-1 through the USB interface 1011; the USB interface 1011 is further provided with a USB dongle for protecting the audio data input by the USB interface 1011. Then, the voice data received by the USB interface 1011 is buffered into the USB buffer 1012, and the voice data in the USB buffer 1012 is transmitted to the audio record alsa node 1013 of the sound card of the first audio processor 101-1; then APK1014 reads the voice data in the record alsa node 1013, and mixes and denoises the voice data and multimedia audio data (such as accompaniment) applied by Karaoke to obtain third audio data; then, the APK outputs the third audio data to the playing alsa node 1015, and outputs the third audio data in the playing alsa node 1015 through the audio output interface 1016, and the third audio data can be transmitted to the second chip 201 through HDMII or network transmission.

When the third audio data is transmitted to the second chip 201 through the HDMI, the first chip 101 is provided with an HDMI transmitting port 101-2, the second chip 201 is provided with an HDMI receiving port 201-1, the HDMI transmitting port 101-2 is in signal connection with the HDMI receiving port 201-1, and the third audio data is transmitted to the second chip 201 through the HDMI transmitting port 101-2 and the HDMI receiving port 201-1. That is, the APK1014 of the first audio processor 101-1 writes the third audio data into the audio card playing alsa node 1015, then transmits the third audio data in the playing alsa node 1015 to the HDMI transmitting port 101-2 of the first chip 101 through the audio output interface 1016, transmits the third audio data to the second chip 201 through the HDMI transmitting port 101-2, receives the third audio data output by the HDMI transmitting port 101-2 through the HDMI receiving port 201-1 of the second chip 201, and then transmits the third audio data to the second audio processor 201-2 through the HDMI receiving port 201-1 for processing.

As shown in fig. 10, the second audio processor 201-2 includes a first buffer (HDMI buffer) 2011, an SRC sampling rate conversion module 2012, a second buffer (HWBUF) 2013, and an audio output node 2014, where the HDMI receiving port 201-1 buffers the received third audio data into the HDMI buffer 2011, and the SRC sampling rate conversion module 2012 reads the third audio data in the HDMI buffer 2011 to perform sampling rate conversion on the third audio data, so that the sampling frequency of the third audio data satisfies the output frequency of the second chip 201; and then, the third audio data after the frequency conversion is cached in the HWBUF2013, the HWBUF2013 can only store certain audio data, a hardware interrupt mode is adopted, namely, the interval of each interrupt is the playing time of outputting audio data with the size of one BUF by the audio output node 2014, when the HWBUF2013 is filled with the audio data, the audio data in the HWBUF2013 is sent to the audio output node 2014, and then the audio data is output by a power amplifier loudspeaker or is output to the sound reproducer 301 by a coaxial device.

In summary, the flow chart of HDMI transmitting the karaoke audio data is as follows: mic (microphone) → USB dongle of the first chip → USB BUF → alsa read → K song APK mix → alsa write → SPDIFOUT → HDMI Tx → HDMI Rx of the second chip → HDMI BUF → SRC sample rate conversion → HWBUF → out0 → AMP (power amplifier) → spaker. That is to say, when singing, the microphone collects human voice, the voice is sent to an alsa node recorded by a sound card of the first chip through dongle equipment, the APK can read data in the recorded alsa node and perform sound mixing and noise reduction processing with multimedia audio data to obtain third audio data, the third audio data is written into a sound card playing alsa node and is processed through an audio output interface to enable HDMI output, and the third audio data is sent to an HDMI transmitting port from the alsa node through DMA to be output; after the HDMI receiving port of the second chip receives the third audio data, the sampling rate conversion module is optimized, the third audio data are cached to the HWBUF, and the data in the HWBUF are sent to an audio output node and output by a power amplifier loudspeaker or output to a sound reproducer by the coaxial equipment in a hardware interrupt mode.

In order to conveniently distinguish the start and the end of each song, when the third audio data is obtained by APK sound mixing of the first chip 101, a zone bit is set for the third audio data, the zone bit comprises a first zone bit and a second zone bit, the first zone bit is used for identifying the start of playing of the third audio data, namely, when K songs are played, the first zone bit is configured at the start playing byte of the song data; the second flag bit is used for identifying the end of playing the third audio data, that is, in the case of karaoke, the second flag bit is configured at the end byte of playing the song data. When the third audio data is transmitted to the HDMI receiving port 201-1 through the HDMI transmitting port 101-2, the flag bit of the third audio data is transmitted to the second chip 201.

However, as shown in fig. 11, when the HDMI receives the data and sends the data to the sound reproducer 301 (e.g. a speaker) each time the K song is played, the speaker may generate an interrupt first, which causes an extra empty data to be filled in the speaker, and during playing, the K song data may be played only after the empty data is played first, so that the time when the HWBUF2013 is filled with the audio data and the time when the output node transmits the empty data need to be waited for the speaker to play the audio data, which causes a delay in the playback of the audio data. For example, HWBUF2013 is 10.666ms in time to fill with audio data, and the output node is 21.333ms in time to transmit null data, so that the delay time latency of the speaker playing audio data = buffer delay time + output latency = hdmi buffering time + out waiting time =10.666ms +21.333ms =32ms, resulting in a sound delay of K song.

In order to optimize the delay of the audio data of the K song caused by the above problems, when each song starts playing, the data in the buffer buf is cleared first, the data comprises the data in the HDMI buffer 2011 and the data in the HWBUF2013, specifically, after the HDMI buffer 2011 receives the audio data, the flag bit of the output audio data is determined, if the first flag bit and the second flag bit are detected in the HDMI buffer 2011, and the audio data received by the HDMI buffer 2011 is the data of two songs, the data between the audio data configured with the second flag bit and the audio data configured with the first flag bit in the HDMI buffer 2011 is cleared, so as to ensure that the latest human voice data is sent to the output node out as soon as possible, prevent the problem of noise when cutting songs, and optimize the problem of inconsistent sound delay when each song starts playing.

Similarly, the audio data in the HWBUF2013 also needs to clear data between the audio data configured with the second flag bit and the audio data configured with the first flag bit, so as to ensure that the latest voice data in the HWBUF2013 is sent to the output node out as soon as possible, prevent the problem of noise when the song is cut, and optimize the problem of inconsistent sound delay when the song is played each time.

In addition, when the third audio data in the HWBUF2013 is sent to the output node out0 in the output interrupt manner, the interrupt generation timing may not match the timing when the HWBUF2013 fills up the data, for example, 10.666ms is required for the HWBUF2013 to fill up the data, the data in the HWBUF2013 is sent to the output node out0 every time the data is filled up by 10.666ms, after the interrupt is initiated by the output node, the data in the HWBUF2013 is sent to the speaker for playing, however, when the interrupt is initiated by the output node, the HWBUF2013 may not fill up the data, the HWBUF2013 continues to buffer the data, and when the data in the HWBUF2013 is filled up, the data is sent to the speaker when the interrupt is output next time, so that the delay of data playing is caused.

In order to optimize the delay of the audio data of the K song caused by the above problems, the second audio processor 201-2 is further configured to detect whether the generation timing of the output terminal matches the timing of the HWBUF2013 for filling the audio data, and if the generation timing of the interrupt does not match the data filling of the HWBUF2013, the output terminal is reset at least when waiting for 0-1 more time consumption of the data of the BUF, so as to ensure that the data is interrupted to be taken away in time after the data of the input HWBUF is filled up, thereby optimizing the problem of time consumption fluctuation of the K song when the terminal is turned on every time.

The optimized state is as follows: after the HDMI data finishes collecting 10.666ms of data, immediately after the output node initiates an interrupt, the audio data in the HWBUF2013 is transmitted to the speaker, and the HWBUF2013 is filled into the next block currently being played, so that the data can be played only by waiting for the current 10.666ms (the time required for playing the current block of buffer).

This example is illustrated by specific embodiments:

if the output node initiates an interrupt, 5ms of audio data is cached in the HWBUF2013, the interrupt cannot output the audio data in the HWBUF2013 to the speaker, before optimization, the HWBUF2013 continues to cache data, and when the next interrupt occurs, 10.666ms of audio data is output to the speaker again, so that the waiting time needs to be 10.666ms. After optimization, if the situation that the opportunity of the HWBUF2013 for filling data is not matched with the opportunity of outputting the interrupt is detected, the interrupt is reset, after the data in the HWBUF2013 is filled, the output node initiates the interrupt again, the audio data in the HWBUF2013 is output to a loudspeaker, and therefore waiting for 5.666ms is needed, and the sound delay is greatly reduced.

Thus, as shown in fig. 12, when the HDMI receives the data completely, the audio data is output to the speaker, and the speaker will place the data at the next expected playing position, so that the time when the HWBUF2013 is full of audio data and the time when the output node transmits empty data, i.e. the sound delay time latency = buffer delay time + output waiting delay time = HDMI buffering time + output waiting time =10.666ms +10.666ms =21.333ms, are required to start playing the K song, which greatly reduces the audio data waiting time compared to the conventional method of transmitting the K song audio data through the HDMI.

When the display device provided by the embodiment of the application is used, the test delay of the K song complete machine is reduced to 57-63ms from 140ms consumed normally, wherein the APK consumed time of the K song is about 15-20ms, the rest is basically consumed time for moving the audio data, the problems of audio data waiting and instable K song delay are reduced, and the low-delay experience effect of the K song continuous function is ensured.

The scheme that the first chip and the second chip perform data transmission through the HDMI is introduced above, and then the scheme that the first chip and the second chip perform data transmission through the network cable is introduced, which is specifically as follows:

when the third audio data is transmitted to the second chip 201 through network transmission, as shown in fig. 13, the first chip 101 further includes a socket buffer 102 and a first network port 103, the second chip 201 further includes a second network port 203 and a node server 202, the socket buffer 102 is configured such that the third audio data output by the first audio processor 101-1 is stored in the socket buffer 102, the third audio data in the socket buffer 102 is output to the first network port 103, the first network port 103 is connected to the second network port 203 through a network cable so as to transmit the third audio data in the socket buffer 102 to the second chip 201 through the network cable, and the second network port 203 of the second chip 201 receives the third audio data output by the first network port 103 and transmits the third audio data to the node server 202; the node server 202 is configured to open the playback alsa node of the second chip 201 to receive the third audio data transmitted by the socket buffer 102. The second audio processor 201-2 outputs the processed third audio data to the sound reproducer 301 for sound playback.

The external Microphone (MIC) is connected with the USB interface 1011 of the first chip 101, that is, the external Microphone (MIC) collects voice data of a user, and sends the voice data to the first audio processor 101-1 through the USB interface 1011; the USB interface 1011 is further provided with a USB dongle for protecting audio data input by the USB interface 1011. Then, the voice data received by the USB interface 1011 is buffered into the USB buffer 1012, and the voice data in the USB buffer 1012 is transmitted to the audio record alsa node 1013 of the sound card of the first audio processor 101-1; then, the APK1014 reads the human voice data in the record alsa node 1013, mixes and denoises the human voice data with multimedia audio data (such as accompaniment) applied to the karaoke to obtain third audio data, then stores the third audio data in the socket buffer 102, transmits the third audio data in the socket buffer 102 to the node server 202 of the second chip 201 through the first network port 103 and the second network port 203 after the threshold for transmission is filled each time, the node server 202 controls the third audio data to be written into the play alsa node of the second chip, the SRC sampling rate conversion module reads the third audio data in the play alsa node, and performs sampling rate conversion on the third audio data to make the sampling frequency of the third audio data meet the output frequency of the second chip 201.

The sampled third audio data is cached in the HWBUF, the HWBUF2013 can only store certain audio data, a hardware interrupt mode is adopted, namely, the interval of each interrupt is the playing time of outputting audio data with the size of one BUF by the audio output node 2014, when the HWBUF2013 is filled with the audio data, the audio data in the HWBUF2013 is sent to the audio output node 2014, and then the audio data is output by a power amplifier loudspeaker or a coaxial device to the sound reproducer 301.

In summary, the flow chart of network transmission of the karaoke audio data is as follows: mic (microphone) → USB dongle of the first chip → USB BUF → alsa read → K song APK mix → Socket BUF → node server of the second chip → alsa write → SRC sampling rate conversion → HWBUF → out0 → AMP (power amplifier) → spaker. That is to say, when singing, the microphone collects human voice, the voice is sent to the alsa node recorded by the sound card of the first chip through the dongle device, and the APK can read data in the recorded alsa node and perform sound mixing and noise reduction processing on the data and multimedia audio data to obtain third audio data; and then, caching the third audio data in a socket buffer, after a threshold for transmission is filled each time, transmitting the third audio data to a node server of a second chip through network transmission, controlling the third audio data to be written into a playing alsa node by the node server, optimizing a sampling rate conversion module, caching the third audio data to the HWBUF, and transmitting the data in the HWBUF to an audio output node in a hardware interrupt mode to be output by a power amplifier loudspeaker or outputting the data to a sound reproducer by a coaxial device.

The display device provided by the embodiment of the application adopts the network to transmit the K song audio data, namely, the collected human voice data and the collected multimedia audio data are directly transmitted to the alsa playing node of the second chip after being processed by the APK, so that the time consumption of the first chip and the HDMI is reduced; in addition, only the second chip is used for audio processing, the problem of double-chip HDMI buffer matching does not need to be considered, the cycle size of entry of the alsa node and playing of the alsa node can be properly reduced, and the time consumption can be optimized by about 10ms.

When K songs are transmitted by adopting a network, when APK of the first chip 101 outputs third audio data, a start command byte is set in a byte where each song starts playing, a stop command byte is set in a byte where each song ends, when the socket buffer 102 receives the third audio data, a start byte of the audio data is detected, when the stop byte is detected, the user stops the K songs, and data in the socket buffer 102 is emptied, so that the latest voice data is received when the user next songs, and the stability of sound delay is ensured.

In addition, as the socket buffer 102 buffers data, the data in the socket buffer 102 has new data to be stored, and also has partially old data to be buffered, if the old data in the socket buffer 102 is buffered in the buffer all the time, the new data may not be stored in the socket buffer, so that the data in the socket buffer can be judged, if more data are accumulated, a small amount of partially old audio data can be deleted in time on the premise of not influencing the data playing effect, and the stability of sound delay is ensured without the risk of sound break.

The data transmission of the Karaoke of the double chips is realized through network transmission, the data transmission is basically the same as the Karaoke on the single board, the time consumption of network delay is very small, the more 2-5ms, the delay of stripping the test sound from the microphone to the loudspeaker of the whole machine is about 45ms, and the problems of audio data waiting and unstable Karaoke delay are solved.

According to the dual-system display device provided by the embodiment of the application, the first chip is used for receiving the voice data of the user when the user sings K, the voice data and the multimedia audio data are mixed to generate third audio data, the third audio data can be output to the second chip through the HDMI, the second chip performs optimization processing on the third audio data, and the problems of voice data waiting and instability of K singing delay are reduced if the delay of sound is not consistent when the sound is played each time and the time consumption fluctuation of the K singing when the user starts the device each time is optimized; the third audio data can also be transmitted and output to the second chip through the network, so that the time consumption of audio processing and HDMI transmission of the first chip is reduced. By optimizing the time consuming time of the karaoke on the dual-system display equipment, more time is reserved for 5G network transmission, and the low-delay experience effect of the karaoke and microphone functions is guaranteed.

Based on the display device described in the foregoing embodiment, an embodiment of the present application further provides a sound low-delay processing method, which is applied to the display device provided in the foregoing embodiment, where the display device includes a first chip, a second chip, and a sound reproducer, and as shown in fig. 14, the sound low-delay processing method based on the display device includes:

s100: the first chip receives audio data, wherein the audio data comprises multimedia audio data and human voice data.

S200: and mixing the multimedia audio data and the human voice data to obtain third audio data, and outputting the third audio data to a second chip.

S300: the second chip receives and processes the third audio data, and sends the processed third audio data to the sound reproducer.

The first chip is used for collecting voice data when a user sings K and transmitting the voice data to the APK of the first chip, the APK carries out sound mixing and noise reduction processing on the voice data and multimedia audio data to obtain third audio data, the third audio data can be transmitted to the second chip through an HDMI or a network, the second chip caches the third audio data to an HDMI buffer and an HWBUF when receiving the third audio data through the HDMI, when each song is played, the data in the HDMI buffer and the HWBUF are emptied first to ensure that the foremost voice data are sent to a loudspeaker as soon as possible, and the problem of inconsistent voice delay when each song is played is optimized; after the terminal is started, whether the output interruption generation time is matched with the HWBUF filling data is detected, if the output interruption generation time is not matched with the HWBUF filling data, the terminal is reset to ensure that the data is interrupted and taken away in time after the HWBUF data is filled, and the problem of time consumption fluctuation of K songs during starting is optimized. When the second chip receives third audio data through network transmission, the third audio data are directly transmitted to the second chip through the first chip through the network transmission and are basically the same as the karaoke on the single board, the time consumption of network delay is small, the time consumption of the first chip and the HDMI is reduced, and the time consumption of the karaoke is greatly reduced.

It should be understood that the terms "first," "second," "third," and the like in the description and in the claims of the present application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used are interchangeable under appropriate circumstances and can be implemented in sequences other than those illustrated or otherwise described herein with respect to the embodiments of the application, for example.

Furthermore, the terms "comprises" and "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a product or device that comprises a list of elements is not necessarily limited to those elements explicitly listed, but may include other elements not expressly listed or inherent to such product or device.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and these modifications or substitutions do not depart from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A display device, comprising:

mixing the multimedia audio data and the human voice data to obtain third audio data, wherein the third audio data is configured with a flag bit, the flag bit comprises a first flag bit and a second flag bit, the first flag bit is used for identifying the start of playing of the third audio data, and the second flag bit is used for identifying the end of playing of the third audio data; transmitting the third audio data, the first zone bit and the second zone bit;

a second chip, wherein the second chip includes a second audio processor, the second audio processor includes a buffer, the second audio processor is configured to buffer third audio data from the first audio processor to the buffer, determine a flag bit of the third audio data input by the buffer, clear third audio data configured between the second flag bit and the first flag bit in the buffer, and output the third audio data after the buffer is filled with the third audio data;

2. The display device according to claim 1, wherein the first chip is provided with an HDMI transmitting port, the second chip is provided with an HDMI receiving port, and the HDMI transmitting port is in signal connection with the HDMI receiving port; and the third audio data is transmitted to the second chip through the HDMI sending port and the HDMI receiving port.

3. The display device of claim 2, wherein the second audio processor is further configured to sample rate convert the received third audio data and buffer the frequency converted third audio data.

4. The display device according to claim 3, wherein the second audio processor comprises a first buffer configured to determine a flag bit of the audio data input from the first buffer, and to clear data between the audio data configured with the second flag bit and the audio data configured with the first flag bit.

5. The display device of claim 4, wherein the second audio processor further comprises a second buffer, responsive to the output of the frequency-converted third audio data, the second buffer configured to determine a flag of the second buffer input audio data, and to clear data between the audio data configured with the second flag and the audio data configured with the first flag.

6. The display device according to claim 5, wherein in response to the output of the frequency-converted third audio data, the second audio processor is further configured to detect whether an output interruption generation timing matches a buffer full third audio data timing;

if the output interruption generation time is not matched with the time when the buffer is filled with the third audio data, resetting the output interruption.

7. The display device according to claim 1, wherein the first chip further comprises a socket buffer, and the socket buffer is configured to store the third audio data output by the first audio processor into the socket buffer;

the first chip is provided with a first net port, the second chip is provided with a second net port, and the first net port and the second net port are connected through a net wire;

and audio data in the socket buffer are transmitted to the second audio processor through the network cable.

8. The display device of claim 7, wherein the second audio processor further comprises a node server configured to turn on a play node of the second chip;

and audio data in the socket buffer are transmitted to the node server through the network cable, and the audio data in the node server are transmitted to the playing node.

9. A sound low-delay processing method, applied to a display device, the display device comprising: the sound reproducer, first chip and second chip;

mixing the multimedia audio data and the human voice data to obtain third audio data, wherein the third audio data is configured with a flag bit, the flag bit comprises a first flag bit and a second flag bit, the first flag bit is used for identifying the start of playing of the third audio data, and the second flag bit is used for identifying the end of playing of the third audio data;

outputting the third audio data, the first flag bit and the second flag bit to the second chip;

the buffer of the second chip receives and buffers the third audio data, and judges that the buffer inputs the zone bit of the third audio data;

clearing third audio data configured between the second flag bit and the first flag bit in the buffer;

outputting third audio data after the buffer is filled with the third audio data;

sending the processed third audio data to the sound reproducer.