CN111654744A

CN111654744A - Sound output amplitude adjusting method and display device

Info

Publication number: CN111654744A
Application number: CN202010510880.2A
Authority: CN
Inventors: 张辉娟; 于皓丞
Original assignee: Hisense Visual Technology Co Ltd
Current assignee: Hisense Visual Technology Co Ltd
Priority date: 2020-06-08
Filing date: 2020-06-08
Publication date: 2020-09-11

Abstract

The embodiment of the invention relates to the technical field of sound output, in particular to a method for adjusting sound output amplitude and display equipment, which enable loudness received by a user to be basically even when the display equipment switches signal sources. The method comprises the following steps: switching from a first signal source to a second signal source in response to a first input instruction; responding to a second input instruction, and adjusting a volume offset value under the second signal source; superposing the sound output amplitude of the audio stream data provided by the second signal source and the adjusted amplitude corresponding to the adjusted volume deviation value to be used as the target sound output amplitude; and outputting the audio stream data to a loudspeaker according to the target sound output amplitude.

Description

Sound output amplitude adjusting method and display device

Technical Field

The invention relates to the technical field of sound output, in particular to a sound output amplitude adjusting method and display equipment.

Background

With the development of DTV, HDMI, and network applications, more and more scenes are available for users to use multiple tv channels, and users can view audio and video data from different signal sources through the multiple tv channels.

However, when a user switches different signal sources, the sound output amplitudes of the input audio data are different, so that the user needs to adjust the volume value of the whole device, or needs to search for a remote controller of the HDMI device and search for a position where the sound output amplitude of the HDMI device is adjusted, so that the user can hear a proper sound volume, and the user experience is finally reduced.

Disclosure of Invention

The application provides a sound output amplitude adjusting method and display equipment, and improves the use experience of a user.

In a first aspect, there is provided a display device comprising:

a display;

at least one speaker;

a user interface;

an HDMI terminal for connecting an external device providing a signal source;

a controller for performing:

switching from a first signal source to a second signal source in response to a first input instruction;

responding to a second input instruction, and adjusting a volume offset value under the second signal source;

superposing the sound output amplitude of the audio stream data provided by the second signal source and the adjusted amplitude corresponding to the adjusted volume deviation value to be used as the target sound output amplitude;

and outputting the audio stream data to a loudspeaker according to the target sound output amplitude.

In some embodiments, the controller is further configured to perform: in the process of playing audio and video data corresponding to a signal source, responding to a user interface instruction for displaying a sound setting menu input by a user, and controlling a display to display the user interface of the sound setting menu, wherein the sound setting menu comprises a volume deviation item.

In some embodiments of the present invention, the,

the method for determining the sound output amplitude comprises the following steps:

acquiring sound input amplitude of audio stream data;

and generating a sound output amplitude according to the sound input amplitude according to a preset rule.

In some embodiments, the step of superimposing the sound output amplitude of the audio stream data provided by the second signal source and the adjusted amplitude corresponding to the adjusted volume offset value as the target sound output amplitude includes:

obtaining a step length;

multiplying the step length by an audio offset value to obtain an adjustment amplitude;

and superposing the adjusting amplitude and the sound output amplitude to be used as a target sound output amplitude.

In a second aspect, a method for adjusting sound output amplitude is provided, including:

In some embodiments, the method further comprises:

in the process of playing audio and video data corresponding to a signal source, responding to a user interface instruction for displaying a sound setting menu input by a user, and controlling a display to display the user interface of the sound setting menu, wherein the sound setting menu comprises a volume deviation item.

In some embodiments, the method of determining the sound output amplitude comprises:

acquiring sound input amplitude of audio stream data;

obtaining a step length;

In the above embodiment, a method for adjusting sound output amplitude and a display device enable loudness received by a user to be substantially even when the display device switches signal sources. The method comprises the following steps: switching from a first signal source to a second signal source in response to a first input instruction; responding to a second input instruction, and adjusting a volume offset value under the second signal source; superposing the sound output amplitude of the audio stream data provided by the second signal source and the adjusted amplitude corresponding to the adjusted volume deviation value to be used as the target sound output amplitude; and outputting the audio stream data to a loudspeaker according to the target sound output amplitude.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

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

fig. 1B is a block diagram schematically illustrating a configuration of the control apparatus 100 in fig. 1A;

fig. 1C is a block diagram schematically illustrating a configuration of the display device 200 in fig. 1A;

FIG. 1D is a block diagram illustrating an architectural configuration of an operating system in memory of display device 200;

fig. 2 illustrates a method of processing audio data in the related art;

fig. 3 is a schematic diagram illustrating a GUI provided by the display apparatus 200;

fig. 4 is a schematic diagram illustrating a GUI provided by the display apparatus 200;

fig. 5 is a schematic diagram illustrating a GUI provided by the display apparatus 200;

fig. 6 is a schematic diagram illustrating a GUI provided by the display device 200;

fig. 7 is a schematic diagram illustrating a GUI provided by the display device 200;

fig. 8 is a schematic diagram illustrating a GUI provided by the display device 200;

a method of processing audio data is illustrated in fig. 9.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

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

Fig. 1A is a schematic diagram illustrating an operation scenario between a display device and a control apparatus. As shown in fig. 1A, the control apparatus 100 and the display device 200 may communicate with each other in a wired or wireless manner.

Among them, the control apparatus 100 is configured to control the display device 200, which may receive an operation instruction input by a user and convert the operation instruction into an instruction recognizable and responsive by the display device 200, serving as an intermediary for 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.

The control device 100 may be a remote controller 100A, which includes infrared protocol communication or bluetooth protocol communication, and other short-distance communication methods, etc. to control the display apparatus 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 device 100 may also be an intelligent device, such as a mobile terminal 100B, a tablet computer, a notebook computer, and the like. For example, the display device 200 is controlled using an application program running on the smart device. The application program may provide various controls to a user through an intuitive User Interface (UI) on a screen associated with the smart device through configuration.

For example, the mobile terminal 100B may install a software application with the display device 200 to implement connection communication through a network communication protocol for the purpose of one-to-one control operation and data communication. Such as: the mobile terminal 100B may be caused to establish a control instruction protocol with the display device 200 to implement the functions of the physical keys as arranged in the remote control 100A by operating various function keys or virtual buttons of the user interface provided 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.

The display apparatus 200 may provide a network television function of a broadcast receiving function and a computer support function. The display device may be implemented as a digital television, a web television, an Internet Protocol Television (IPTV), or the like.

The display device 200 may be a liquid crystal display, an organic light emitting display, a projection device. The specific display device type, size, resolution, etc. are not limited.

The display apparatus 200 also performs data communication with the server 300 through various communication means. Here, the display apparatus 200 may be allowed to be communicatively connected through a Local Area Network (LAN), a Wireless Local Area Network (WLAN), and other networks. The server 300 may provide various contents and interactions to the display apparatus 200. By way of example, the display device 200 may send and receive information such as: receiving Electronic Program Guide (EPG) data, receiving software program updates, or accessing a remotely stored digital media library. The servers 300 may be a group or groups of servers, 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.

Fig. 1B is a block diagram illustrating the configuration of the control device 100. As shown in fig. 1B, the control device 100 includes a controller 110, a memory 120, a communicator 130, a user input interface 140, an output interface 150, and a power supply 160.

The controller 110 includes a Random Access Memory (RAM)111, a Read Only Memory (ROM)112, a processor 113, 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 of the communication cooperation, external and internal data processing functions.

Illustratively, when an interaction of a user pressing a key disposed on the remote controller 100A or an interaction of touching a touch panel disposed on the remote controller 100A is detected, the controller 110 may control to generate a signal corresponding to the detected interaction and transmit the signal to the display device 200.

And a memory 120 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 120 may store various control signal commands input by a user.

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 control apparatus 100 transmits a control signal (e.g., a touch signal or a button signal) to the display device 200 via the communicator 130, and the control apparatus 100 may receive the signal transmitted by the display device 200 via the communicator 130. The communicator 130 may include an infrared signal interface 131 and a radio frequency signal interface 132. For example: 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.

The user input interface 140 may include at least one of a microphone 141, a touch pad 142, a sensor 143, a key 144, and the like, so that a user can input a user instruction regarding controlling the display apparatus 200 to the control apparatus 100 through voice, touch, gesture, press, and the like.

The output interface 150 outputs a user instruction received by the user input interface 140 to the display apparatus 200, or outputs an image or voice signal received by the display apparatus 200. Here, the output interface 150 may include an LED interface 151, a vibration interface 152 generating vibration, a sound output interface 153 outputting sound, a display 154 outputting an image, and the like. For example, the remote controller 100A may receive an output signal such as audio, video, or data from the output interface 150, and display the output signal in the form of an image on the display 154, in the form of audio on the sound output interface 153, or in the form of vibration on the vibration interface 152.

And a power supply 160 for providing operation power support for each element of the control device 100 under the control of the controller 110. In the form of a battery and associated control circuitry.

A hardware configuration block diagram of the display device 200 is exemplarily illustrated in fig. 1C. As shown in fig. 1C, the display apparatus 200 may include a tuner demodulator 210, a communicator 220, a detector 230, an external device interface 240, a controller 250, a memory 260, a user interface 265, a video processor 270, a display 275, an audio processor 280, an audio output interface 285, and a power supply 290.

The tuner demodulator 210 receives the broadcast television signal in a wired or wireless manner, may perform modulation and demodulation processing such as amplification, mixing, and resonance, and is configured to demodulate, from a plurality of wireless or wired broadcast television signals, an audio/video signal carried in a frequency of a television channel selected by a user, and additional information (e.g., EPG data).

The tuner demodulator 210 is responsive to the user selected frequency of the television channel and the television signal carried by the frequency, as selected by the user and controlled by the controller 250.

The tuner demodulator 210 can receive a television signal in various ways according to the broadcasting system of the television signal, such as: terrestrial broadcasting, cable broadcasting, satellite broadcasting, internet broadcasting, or the like; and according to different modulation types, a digital modulation mode or an analog modulation mode can be adopted; and can demodulate the analog signal and the digital signal according to the different kinds of the received television signals.

In other exemplary embodiments, the tuning demodulator 210 may also be in an external device, such as an external set-top box. In this way, the set-top box outputs a television signal after modulation and demodulation, and inputs the television signal into the display apparatus 200 through the external device interface 240.

The communicator 220 is a component for communicating with an external device or an external server according to various communication protocol types. For example, the display apparatus 200 may transmit content data to an external apparatus connected via the communicator 220, or browse and download content data from an external apparatus connected via the communicator 220. The communicator 220 may include a network communication protocol module or a near field communication protocol module, such as a WIFI module 221, a bluetooth communication protocol module 222, and a wired ethernet communication protocol module 223, so that the communicator 220 may receive a control signal of the control device 100 according to the control of the controller 250 and implement the control signal as a WIFI signal, a bluetooth signal, a radio frequency signal, and the like.

The detector 230 is a component of the display apparatus 200 for collecting signals of an external environment or interaction with the outside. The detector 230 may include a sound collector 231, such as a microphone, which may be used to receive a user's sound, such as a voice signal of a control instruction of the user to control the display device 200; alternatively, ambient sounds may be collected that identify the type of ambient scene, enabling the display device 200 to adapt to ambient noise.

In some other exemplary embodiments, the detector 230, which may further include an image collector 232, such as a camera, a video camera, etc., may be configured to collect external environment scenes to adaptively change the display parameters of the display device 200; and the function of acquiring the attribute of the user or interacting gestures with the user so as to realize the interaction between the display equipment and the user.

In some other exemplary embodiments, the detector 230 may further include a light receiver for collecting the intensity of the ambient light to adapt to the display parameter variation of the display device 200.

In some other exemplary embodiments, the detector 230 may further include a temperature sensor, such as by sensing an ambient temperature, and the display device 200 may adaptively adjust a display color temperature of the image. For example, when the temperature is higher, the display apparatus 200 may be adjusted to display a color temperature of an image that is cooler; when the temperature is lower, the display device 200 may be adjusted to display a warmer color temperature of the image.

The external device interface 240 is a component for providing the controller 250 to control data transmission between the display apparatus 200 and an external apparatus. The external device interface 240 may be connected to 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 240 may include: a High Definition Multimedia Interface (HDMI) terminal 241, a Composite Video Blanking Sync (CVBS) terminal 242, an analog or digital Component terminal 243, a Universal Serial Bus (USB) terminal 244, a Component terminal (not shown), a red, green, blue (RGB) terminal (not shown), and the like.

The controller 250 controls the operation of the display device 200 and responds to the operation of the user by running various software control programs (such as an operating system and various application programs) stored on the memory 260. For example, the controller may be implemented as a Chip (SOC).

As shown in fig. 1C, the controller 250 includes a Random Access Memory (RAM)251, a Read Only Memory (ROM)252, a graphics processor 253, a CPU processor 254, a communication interface 255, and a communication bus 256. The RAM251, the ROM252, the graphic processor 253, and the CPU processor 254 are connected to each other through a communication bus 256 through a communication interface 255.

The ROM252 stores various system boot instructions. When the display apparatus 200 starts power-on upon receiving the power-on signal, the CPU processor 254 executes a system boot instruction in the ROM252, copies the operating system stored in the memory 260 to the RAM251, and starts running the boot operating system. After the start of the operating system is completed, the CPU processor 254 copies the various application programs in the memory 260 to the RAM251 and then starts running and starting the various application programs.

And a graphic processor 253 for generating various graphic objects such as icons, operation menus, and user input instruction display graphics, etc. The graphic processor 253 may include an operator for performing an operation by receiving various interactive instructions input by a user, and further displaying 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 275.

A CPU processor 254 for executing operating system and application program instructions stored in memory 260. And according to the received user input instruction, processing of various application programs, data and contents is executed so as to finally display and play various audio-video contents.

In some example embodiments, the CPU processor 254 may comprise a plurality of processors. The plurality of processors may include one main processor and a plurality of or one sub-processor. A main processor for performing some initialization operations of the display apparatus 200 in the display apparatus preload mode and/or operations of displaying a screen in the normal mode. A plurality of or one sub-processor for performing an operation in a state of a standby mode or the like of the display apparatus.

The communication interface 255 may include a first interface to an nth interface. These interfaces may be network interfaces that are connected to external devices via a network.

The controller 250 may control the overall operation of the display apparatus 200. For example: in response to receiving a user input command for selecting a GUI object displayed on the display 275, the controller 250 may perform an operation related to the object selected by the user input command. For example, the controller may be implemented as an SOC (System on Chip) or an MCU (Micro Control Unit).

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

A memory 260 for storing various types of data, software programs, or applications for driving and controlling the operation of the display device 200. The memory 260 may include volatile and/or nonvolatile memory. And the term "memory" includes the memory 260, the RAM251 and the ROM252 of the controller 250, or a memory card in the display device 200.

In some embodiments, the memory 260 is specifically used for storing an operating program for driving the controller 250 of the display device 200; storing various application programs built in the display apparatus 200 and downloaded by a user from an external apparatus; data such as visual effect images for configuring various GUIs provided by the display 275, various objects related to the GUIs, and selectors for selecting GUI objects are stored.

In some embodiments, memory 260 is specifically configured to store drivers for tuner demodulator 210, communicator 220, detector 230, external device interface 240, video processor 270, display 275, audio processor 280, etc., and related data, such as external data (e.g., audio-visual data) received from the external device interface or user data (e.g., key information, voice information, touch information, etc.) received by the user interface.

In some embodiments, memory 260 specifically stores software and/or programs representing an Operating System (OS), which may include, for example: a kernel, middleware, an Application Programming Interface (API), and/or an application program. Illustratively, the kernel may control or manage system resources, as well as functions implemented by other programs (e.g., the middleware, APIs, or applications); at the same time, the kernel may provide an interface to allow middleware, APIs, or applications to access the controller to enable control or management of system resources.

A block diagram of the architectural configuration of the operating system in the memory of the display device 200 is illustrated in fig. 1D. The operating system architecture comprises an application layer, a middleware layer and a kernel layer from top to bottom.

The application layer, the application programs built in the system and the non-system-level application programs belong to the application layer. Is responsible for direct interaction with the user. The application layer may include a plurality of applications such as a setup application, a post application, a media center application, and the like. These applications may be implemented as Web applications that execute based on a WebKit engine, and in particular may be developed and executed based on HTML5, Cascading Style Sheets (CSS), and JavaScript.

Here, HTML, which is called HyperText Markup Language (HyperText Markup Language), is a standard Markup Language for creating web pages, and describes the web pages by Markup tags, where the HTML tags are used to describe characters, graphics, animation, sound, tables, links, etc., and a browser reads an HTML document, interprets the content of the tags in the document, and displays the content in the form of web pages.

CSS, known as Cascading Style Sheets (Cascading Style Sheets), is a computer language used to represent the Style of HTML documents, and may be used to define Style structures, such as fonts, colors, locations, etc. The CSS style can be directly stored in the HTML webpage or a separate style file, so that the style in the webpage can be controlled.

JavaScript, a language applied to Web page programming, can be inserted into an HTML page and interpreted and executed by a browser. The interaction logic of the Web application is realized by JavaScript. The JavaScript can package a JavaScript extension interface through a browser, realize the communication with the kernel layer,

the middleware layer may provide some standardized interfaces to support the operation of various environments and systems. For example, the middleware layer may be implemented as multimedia and hypermedia information coding experts group (MHEG) middleware related to data broadcasting, DLNA middleware which is middleware related to communication with an external device, middleware which provides a browser environment in which each application program in the display device operates, and the like.

The kernel layer provides core system services, such as: file management, memory management, process management, network management, system security authority management and the like. The kernel layer may be implemented as a kernel based on various operating systems, for example, a kernel based on the Linux operating system.

The kernel layer also provides communication between system software and hardware, and provides device driver services for various hardware, such as: provide display driver for the display, provide camera driver for the camera, provide button driver for the remote controller, provide wiFi driver for the WIFI module, provide audio driver for audio output interface, provide power management drive for Power Management (PM) module etc..

A user interface 265 receives various user interactions. Specifically, it is used to transmit an input signal of a user to the controller 250 or transmit an output signal from the controller 250 to the user. For example, the remote controller 100A may transmit an input signal, such as a power switch signal, a channel selection signal, a volume adjustment signal, etc., input by the user to the user interface 265, and then the input signal is transferred to the controller 250 through the user interface 265; alternatively, the remote controller 100A may receive an output signal such as audio, video, or data output from the user interface 265 via the controller 250, and display the received output signal or output the received output signal in audio or vibration form.

In some embodiments, a user may enter user commands on a Graphical User Interface (GUI) displayed on the display 275, and the user interface 265 receives the user input commands through the GUI. Specifically, the user interface 265 may receive user input commands for controlling the position of a selector in the GUI to select different objects or items.

Alternatively, the user may input a user command by inputting a specific sound or gesture, and the user interface 265 receives the user input command by recognizing the sound or gesture through the sensor.

The video processor 270 is configured to receive an external 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 275.

Illustratively, the video processor 270 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 configured to demultiplex an input audio/video data stream, where, for example, an input MPEG-2 stream (based on a compression standard of a digital storage media moving image and voice), the demultiplexing module demultiplexes the input audio/video data stream into a video signal and an audio signal.

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

And the image synthesis module is used for carrying out superposition mixing processing on the GUI signal input by the user or generated by the user and the video image after the zooming processing by the graphic 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, for example, convert a frame rate of an input 60Hz video into a frame rate of 120Hz or 240Hz, where a common format is implemented by using, for example, an interpolation frame method.

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.

A display 275 for receiving the image signal from the video processor 270 and displaying the video content, the image and the menu manipulation interface. The display video content may be from the video content in the broadcast signal received by the tuner-demodulator 210, or from the video content input by the communicator 220 or the external device interface 240. The display 275, while displaying a user manipulation interface UI generated in the display apparatus 200 and used to control the display apparatus 200.

And, the display 275 may include a display screen assembly for presenting a picture and a driving assembly for driving the display of an image. Alternatively, a projection device and projection screen may be included, provided display 275 is a projection display.

The audio processor 280 is configured to receive an external audio signal, decompress and decode the received audio signal according to a standard codec protocol of the input signal, and perform audio data processing such as noise reduction, digital-to-analog conversion, and amplification processing to obtain an audio signal that can be played by the speaker 286.

Illustratively, audio processor 280 may support various audio formats. Such as MPEG-2, MPEG-4, Advanced Audio Coding (AAC), high efficiency AAC (HE-AAC), and the like.

The audio output interface 285 is used for receiving an audio signal output by the audio processor 280 under the control of the controller 250, and the audio output interface 285 may include a speaker 286 or an external sound output terminal 287, such as an earphone output terminal, for outputting to a generating device of an external device.

In other exemplary embodiments, video processor 270 may comprise one or more chips. Audio processor 280 may also comprise one or more chips.

And, in other exemplary embodiments, the video processor 270 and the audio processor 280 may be separate chips or may be integrated with the controller 250 in one or more chips.

And a power supply 290 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 250. The power supply 290 may be a built-in power supply circuit installed inside the display apparatus 200, or may be a power supply installed outside the display apparatus 200.

Currently, television manufacturers measure the sound output amplitude when the input amplitude is a standard value. For example, the default standard input amplitude is-12 db. But the input sources are not sized to comply with-12 db, thus resulting in inconsistent sound levels heard by the user at the same volume.

As shown in fig. 2, in the method for processing audio data in the related art shown in fig. 2, after audio and video data of a signal source is processed (i.e., sound signal processing), a sound output amplitude corresponding to the audio data is determined. And then the audio data is played through a complete machine control loudspeaker (namely complete machine volume control).

Fig. 3 illustrates a schematic diagram of a GUI provided by the display apparatus 200.

As shown in fig. 3, the display device may provide a GUI400 to the display, the GUI400 including a sound setting menu including one or more different items arranged therein. For example, the Sound setting menu 41 includes items 411-414, where the items 411-414 are Sound Mode (Sound Mode), Sound Mode setting (Sound Mode settings), speaker (Speakers), and Volume Shift (Volume Shift), respectively. And the GUI further includes a selector 42 indicating that any one of the items is selected, the position of the selector in the GUI being movable by input from a user operating the control means, and any one of the items being selected. For example, the selector 42 indicates that the item 411 in the sound setting menu 41 is selected.

Note that the item refers to a visual object displayed in the GUI in the display apparatus 200 to represent corresponding content such as an icon, a thumbnail, a video clip, a link, and the like.

The presentation forms of items are often diverse. For example, the items may include text content and/or images for displaying thumbnails related to the text content. As another example, the item may be text and/or an icon of an application. It is further noted that the selector is used to indicate that any item, such as the focus object, has been selected. In one aspect, the movement of the focus object displayed in the display apparatus 200 may be controlled to select or control the item according to an input of the user through the control device 100. Such as: the user may select and control items by controlling the movement of the focus object between items through the direction keys on the control device 100. On the other hand, movement of items displayed in the display apparatus 200 may be controlled according to an input of a user through the control device 100 to cause a focus object to select or control the items. Such as: the user can control the items to move left and right together by the direction key on the control device 100, so as to enable the focus object to select and control the items while keeping the position of the focus object unchanged. The form of identification of the selector is often diversified. For example, as in fig. 3, the position of the focus object 42 may be identified by changing the border line, size, color, transparency, and outline of the text or image of the focused item, and/or the font, etc., and the position of the focus object 42 may be implemented or identified by setting the background color of the item.

Also displayed on the GUI400 is a volume bar 4141 that adjusts the volume offset value. When the user moves the selector through the control device to the item 414, the volume offset value may be adjusted in size by "left" and "right" keys on the control device. Illustratively, as shown in fig. 3, the current signal source is an application, and the volume offset value of the current signal source is 3. As shown in fig. 4, the current signal source is another application and the volume offset value of the current signal source is-4. As shown in fig. 5, the current signal source transmits an audio/video signal through the HDMI1 channel, and the volume offset value of the current signal source is 3. As shown in fig. 6, the current signal source transmits an audio/video signal through the HDMI4 channel, and the volume offset value of the current signal source is 0. As shown in fig. 7, the current signal source is the local multimedia, and the volume offset value of the current signal source is 2.

Fig. 8 illustrates a schematic diagram of a GUI provided by the display apparatus 200. The GUI includes a complete machine volume bar 43, and a selector 42 to instruct adjustment of the complete machine volume. For example, the selector can adjust the volume of the whole machine to be 30.

The application provides a method for adjusting sound output amplitude, which comprises the following steps:

and responding to the first input instruction, and switching from the first signal source to the second signal source.

The signal source in the embodiment of the application comprises a signal source for transmitting audio and video data through multiple channels such as DTV, HDMI, AV and the like, and further comprises an application installed on the display device. The number of the HDMI channels can be multiple, the multiple HDMI channels can be connected with different multimedia boxes, and the application can be netflix, youtube, vudu or Egqi art and the like. Illustratively, in response to the first input instruction, the signal source corresponding to the HDMI1 channel is switched to the signal source corresponding to the HDMI2 channel.

And responding to a second input instruction, and adjusting the volume offset value under the second signal source. In some embodiments, adjusting the volume offset value comprises: in the process of playing audio and video data corresponding to a signal source, responding to a user interface instruction for displaying a sound setting menu input by a user, and controlling a display to display the user interface of the sound setting menu, wherein the sound setting menu comprises a volume deviation item. Illustratively, as shown in fig. 3, the GUI of fig. 3 includes a sound setting menu 41 provided with a volume offset item 414. And adjusting the volume offset value under the second signal source in response to an instruction for adjusting the offset value, which is input by a user. Illustratively, as shown in fig. 3, the selector is moved to the volume offset item 414, and the size of the offset value is adjusted by the "left key" and the "right key". In some embodiments, the offset values range from-6 to 6 integers, where negative values of the volume offset value are decreasing volume offset values and positive values of the volume offset value are increasing volume offset values.

In the embodiment of the present application, the volume offset values corresponding to different signal sources may be set according to the above method. For example, the signal sources for transmitting audio/video signals to multiple channels such as DTV, HDMI, AV, etc. and the volume offset value setting of the application installed on the display device may be set at a fixed overall volume of the display device, for example, a volume of 30.

The controller superposes the sound output amplitude of the audio stream data provided by the second signal source and the adjusted amplitude corresponding to the adjusted volume deviation value to serve as a target sound output amplitude; and outputting the audio stream data to a loudspeaker according to the target sound output amplitude.

In order to avoid that different sound output amplitudes are caused when signal sources are switched, and bad use feeling is brought to users, in the embodiment of the application, a volume deviation value can be set for the sound output amplitude corresponding to the signal sources according to differences of different signal sources. And then, the sound output amplitude of the signal source is adjusted according to the offset value volume, the target sound output amplitude is finally determined, and the loudspeaker is controlled to play audio data according to the target sound output amplitude, so that the loudness received by the ear of a user is basically even, the situation that the sound is suddenly increased or suddenly reduced due to switching of the signal source is avoided, and the situation that the sound is suddenly decreased or suddenly increased due to adjustment of the overall volume and other redundant operations can be avoided, so that the user can hear the proper sound volume.

The volume offset function is to adjust the output amplitude of the chip PCM data (PCM data), a user finely adjusts the output amplitude of the PCM data according to the input amplitude of an actual signal, and the effect that the target sound output amplitudes are consistent is finally achieved under the condition that the input sound amplitudes of signal sources are inconsistent.

Illustratively, the HDMI1 channel taps into the millet box, and the sound signal PCM data input amplitude of HDMI1 is-12 db. Because different markets have different requirements on the sound change trend corresponding to the volume of the whole machine from 0 to 100, some hopes that the high volume changes quickly, and some hopes that the low volume changes quickly. Taking a certain market as an example, after an input signal-12 db passes through an accompanying sound algorithm, the output amplitude of a chip PCM data corresponding to the whole volume 50 is-15 db, and the semitone algorithm refers to a preset rule that the volume of high sound changes fast or the volume of low sound changes fast.

The HDMI2 channel is connected to Hua as a box, the input amplitude of the sound signal PCM data of the HDMI2 is-10 DB, and the output amplitude of the chip PCM data corresponding to the whole machine volume 50 after the input signal-10 DB is subjected to an accompanying sound algorithm is-14 DB by taking the same market as an example.

The PCM data output amplitude is-14 db and-15 db which are different by 1db from each other at the output end of the chip, the PCM data are amplified through a rear-end power amplifier, and the subjective feeling volume is greatly different under the same volume. One step is 0.25DB, and the chip's final PCM data output amplitude is-15 DB by lowering the volume offset value of HDMI2 to-4, or the chip's final PCM data output amplitude is-14 DB by increasing the volume offset value of HDMI1 to 4. The output amplitudes of the chip PCM data of the two channels are almost consistent, and the effect that the subjective feelings of users are consistent is achieved.

For example, the user may select to lower the PCM data output magnitude by the volume offset function of the HDMI2 channel. The negative number represents that the output amplitude of the chip is reduced, a user adjusts from 0 to the negative number, the output amplitude of the PCM data of the chip is reduced by 0.25db on the basis of the amplitude of-14 db, and the corresponding values are-14.25 db, -14.5db, -14.75db and-15 db respectively. When the volume offset value is-4, the sound level of the user compared to the HDMI1 channel is almost uniform, and therefore the state in which the volume offset value of HDMI2 is-4 can be maintained.

In some embodiments, as shown in fig. 9, after processing the audio-video data of the signal source (i.e., sound signal processing), the sound output amplitude corresponding to the audio data is determined. Then, the sound output amplitude is adjusted by using the Volume shift value (namely Volume shift), and finally, the audio data after the sound output amplitude is adjusted is played through the whole machine control loudspeaker (namely whole machine Volume control).

As described in the above embodiments, a method for adjusting sound output amplitude and a display device are provided, which enable the loudness received by a user to be substantially even when the display device switches signal sources. The method comprises the following steps: switching from a first signal source to a second signal source in response to a first input instruction; responding to a second input instruction, and adjusting a volume offset value under the second signal source; superposing the sound output amplitude of the audio stream data provided by the second signal source and the adjusted amplitude corresponding to the adjusted volume deviation value to be used as the target sound output amplitude; and outputting the audio stream data to a loudspeaker according to the target sound output amplitude.

While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A display device, comprising:

a display;

at least one speaker;

a user interface;

an HDMI terminal for connecting an external device providing a signal source;

a controller for performing:

2. The display device according to claim 1, wherein the controller is further configured to perform: in the process of playing audio and video data corresponding to a signal source, responding to a user interface instruction for displaying a sound setting menu input by a user, and controlling a display to display the user interface of the sound setting menu, wherein the sound setting menu comprises a volume deviation item.

3. The display device according to claim 1, wherein the method of determining the sound output amplitude comprises:

acquiring sound input amplitude of audio stream data;

4. The display device according to claim 1 or 3, wherein the step of superimposing the sound output amplitude of the audio stream data provided by the second signal source and the adjusted amplitude corresponding to the adjusted volume offset value as the target sound output amplitude comprises:

obtaining a step length;

5. A method of adjusting an amplitude of an output of sound, comprising:

6. The method of claim 5, further comprising:

7. The method of claim 5, wherein the method of determining the sound output amplitude comprises:

acquiring sound input amplitude of audio stream data;

8. The method according to claim 5 or 7, wherein the step of superimposing the sound output amplitude of the audio stream data provided by the second signal source with the adjusted amplitude corresponding to the adjusted volume offset value as the target sound output amplitude comprises:

obtaining a step length;