CN112118400B

CN112118400B - Display method of image on display device and display device

Info

Publication number: CN112118400B
Application number: CN202010980285.5A
Authority: CN
Inventors: 张伟丽
Original assignee: Qingdao Hisense Media Network Technology Co Ltd
Current assignee: Vidaa Netherlands International Holdings BV
Priority date: 2020-09-17
Filing date: 2020-09-17
Publication date: 2022-09-30
Anticipated expiration: 2040-09-17
Also published as: CN112118400A

Abstract

The application provides a display method and display equipment for images on display equipment, which can be used for configuring corresponding parameter sets in advance according to each channel currently supported by the display equipment and then obtaining the corresponding parameter sets according to the channel to be switched; then, decoding the image signal in the channel to be switched, and setting preset parameters in the parameter set in an image module for controlling image display while decoding; under the condition that the real general image parameters obtained after decoding are the same as the preset general image parameters and the real signal characteristic parameters obtained after decoding are the same as the preset signal characteristic parameters, the parameter values of the image module do not need to be reset, and the image module can be directly controlled to display the image corresponding to the image signals in the channel to be switched according to the preset parameters in the parameter set. Furthermore, the processing efficiency of the display device during channel switching can be improved, the display speed of images is increased, and the experience of users watching the display device is guaranteed.

Description

Display method of image on display device and display device

Technical Field

The application relates to the technical field of smart home, in particular to a display method and display equipment for images on display equipment.

Background

The display device can usually support image display corresponding to a plurality of signal channels, and parameters such as image content, image brightness, image contrast, image quality and the like provided by different signal channels are different, so that a user can select different signal channels to watch programs according to own requirements.

In general, the process of selecting a different signal channel by a user can be regarded as a process of switching the display device from a current signal channel to another signal channel, and the processing flow is as follows: when the signal channel of the display device is switched to a new signal channel, when a controller in the display device detects a new signal in the new signal channel, the new signal is analyzed first to obtain related parameters of the new signal, then image parameters for controlling image display are set in the display device according to the related parameters of the new signal, and the display device can display images after the setting is completed.

However, in the above processing flow of the display device, it is necessary to wait for the display device to completely decode the new signal before setting the image parameters, and in the case of very many image parameters, the processing flow takes a long time and the processing efficiency is also reduced; especially, when the new signal is a digital signal, the time for the display device to decode the new signal is longer, and then the time for setting the image parameters is superposed, so that the processing efficiency of the processing flow is lower. Under the condition, after the display equipment switches the signal channels, images corresponding to the new signal channels can be displayed at intervals, and the experience of watching the display equipment by a user is further influenced.

Disclosure of Invention

The application provides a display method of an image on a display device and the display device, which can improve the processing efficiency of the display device when switching channels, accelerate the display speed of the image and ensure the experience of a user watching the display device.

In a first aspect, the present application provides a method for displaying an image on a display device, including:

determining a channel to be switched according to a channel switching instruction; the channel switching instruction is used for representing an instruction of a user for selecting a channel received by the display equipment; the channel is used for representing a channel for providing an image signal for a display device;

acquiring a parameter set corresponding to the channel to be switched; the parameter set is used for representing a parameter set comprising preset general image parameters related to a channel and preset signal characteristic parameters related to a signal in the channel;

setting the preset general image parameters and the preset signal characteristic parameters in the parameter set in an image module for controlling image display while decoding the image signals in the channel to be switched;

and under the conditions that the real general image parameters obtained after decoding are the same as the preset general image parameters and the real signal characteristic parameters obtained after decoding are the same as the preset signal characteristic parameters, controlling an image module to directly display the image corresponding to the image signals in the channel to be switched according to the preset general image parameters and the preset signal characteristic parameters.

In some embodiments, before determining the channel to be switched according to the channel switching instruction, the method further includes:

acquiring all channels which can be supported by display equipment;

respectively setting a preset general image parameter and a preset signal characteristic parameter for the channel according to the characteristic of the channel;

and forming a parameter set corresponding to the channel by using the preset general image parameter and the preset signal characteristic parameter.

In some embodiments, after the preset general image parameter and the preset signal characteristic parameter in the parameter set are set in an image module controlling image display while decoding the image signal in the channel to be switched, the method further includes:

resetting the real signal characteristic parameters in the image module under the condition that the real general image parameters obtained after decoding are the same as the preset general image parameters and the real signal characteristic parameters obtained after decoding are not the same as the preset signal characteristic parameters;

and controlling the image module to display the image corresponding to the image signal in the channel to be switched according to the preset general image parameter and the reset real signal characteristic parameter.

In some embodiments, after controlling the image module to display the image corresponding to the image signal in the channel to be switched according to the preset general image parameter and the reset real signal characteristic parameter, the method further includes:

and updating the preset signal characteristic parameters in the parameter set into the real signal characteristic parameters to obtain an updated parameter set.

resetting the real signal characteristic parameter and the real general image parameter in an image module under the condition that the real general image parameter obtained after decoding is different from the preset general image parameter and the real signal characteristic parameter obtained after decoding is different from the preset signal characteristic parameter;

and controlling the image module to display the image corresponding to the image signal in the channel to be switched according to the reset real signal characteristic parameter and the real general image parameter.

In some embodiments, after controlling the image module to display the image corresponding to the image signal in the channel to be switched according to the reset real signal characteristic parameter and real general image parameter, the method further includes:

and updating the preset signal characteristic parameters in the parameter set to the real signal characteristic parameters, and updating the preset general image parameters in the parameter set to the real general image parameters to obtain an updated parameter set.

In a second aspect, the present application provides a display device comprising:

the display is used for displaying images corresponding to the image signals in different channels;

a controller for performing:

determining a channel to be switched according to the channel switching instruction; the channel switching instruction is used for representing an instruction of a user for selecting a channel received by the display equipment; the channel is used for representing a channel for providing an image signal for a display device;

acquiring a parameter set corresponding to the channel to be switched; the parameter set is used for representing a parameter set comprising preset general image parameters related to a channel and preset signal characteristic parameters related to signals in the channel;

In some embodiments, the controller is further configured to perform:

acquiring all channels which can be supported by display equipment;

In some embodiments, the controller is further configured to perform:

As can be seen from the above, the method for displaying an image on a display device and the display device provided by the present application can pre-configure corresponding parameter sets according to each channel currently supported by the display device, and then obtain the corresponding parameter sets according to the channel to be switched; then, decoding the image signal in the channel to be switched, and setting preset parameters in the parameter set in an image module for controlling image display while decoding; under the condition that the real general image parameters obtained after decoding are the same as the preset general image parameters and the real signal characteristic parameters obtained after decoding are the same as the preset signal characteristic parameters, the parameter values of the image module do not need to be reset, and the image module can be directly controlled to display the image corresponding to the image signals in the channel to be switched according to the preset parameters in the parameter set. Furthermore, the processing efficiency of the display device during channel switching can be improved, the display speed of images is increased, and the experience of users watching the display device is guaranteed.

Drawings

In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic diagram illustrating an operational scenario between a display device and a control apparatus according to some embodiments;

a block diagram of a hardware configuration of a display device 200 according to some embodiments is illustrated in fig. 2;

a block diagram of the hardware configuration of the control device 100 according to some embodiments is illustrated in fig. 3;

a schematic diagram of a software configuration in a display device 200 according to some embodiments is illustrated in fig. 4;

FIG. 5 illustrates an icon control interface display diagram of an application in the display device 200, according to some embodiments;

fig. 6 is a flowchart illustrating a method for displaying an image on a display device according to an embodiment of the present application;

fig. 7 is a flowchart illustrating a method for setting a parameter set according to an embodiment of the present application;

FIG. 8 is a schematic diagram illustrating a parameter set of a display device according to an embodiment of the present application;

fig. 9 is a schematic operation diagram of switching channels of a display device according to an embodiment of the present application.

Detailed Description

To make the objects, embodiments and advantages of the present application clearer, the following description of exemplary embodiments of the present application will clearly and completely describe the exemplary embodiments of the present application with reference to the accompanying drawings in the exemplary embodiments of the present application, and it is to be understood that the described exemplary embodiments are only a part of the embodiments of the present application, and not all of the embodiments.

All other embodiments, which can be derived by a person skilled in the art from the exemplary embodiments described herein without making any inventive step, are intended to be within the scope of the claims appended hereto. In addition, while the disclosure herein has been presented in terms of one or more exemplary examples, it should be appreciated that aspects of the disclosure may be implemented solely as a complete embodiment.

It should be noted that the brief descriptions of the terms in the present application are only for the convenience of understanding the embodiments described below, and are not intended to limit the embodiments of the present application. These terms should be understood in their ordinary and customary meaning unless otherwise indicated.

The terms "first," "second," "third," and the like in the description and claims of this application and in the above-described drawings are used for distinguishing between similar or analogous objects or entities and are not necessarily intended to limit the order or sequence of any particular one, Unless otherwise indicated. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein.

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.

The term "module," as used herein, refers 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 this application refers to a component of an electronic device, such as the display device disclosed in this application, that is typically wirelessly controllable over a short distance. Typically using infrared and/or Radio Frequency (RF) signals and/or bluetooth to connect with the electronic device, and may also include WiFi, wireless USB, bluetooth, motion sensor, 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 this application refers to a user's behavior through a change in hand shape or an action such as hand motion to convey a desired idea, action, purpose, or result.

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 device 200 through the mobile terminal 300 and the control apparatus 100.

In some embodiments, the control apparatus 100 may be a remote controller, and the communication between the remote controller and the display device includes an infrared protocol communication or a bluetooth protocol communication, and other short-distance communication methods, etc., and the display device 200 is controlled by wireless or other wired methods. The user may input a user command through a key on a remote controller, voice input, control panel input, etc. to control the display apparatus 200. Such as: the user may input a corresponding control command through a volume up/down key, a channel control key, up/down/left/right movement keys, a voice input key, a menu key, a power on/off key, etc. on the remote controller, to implement a function of controlling the display apparatus 200.

In some embodiments, mobile terminals, tablets, computers, laptops, and other smart devices may also be used to control the display device 200. For example, the display device 200 is controlled using an application program running on the smart device. The application, through configuration, may provide the user with various controls in an intuitive User Interface (UI) on a screen associated with the smart device.

In some embodiments, the mobile terminal 300 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 300 and the display device 200 can be used for establishing a control instruction protocol, synchronizing a remote control keyboard to the mobile terminal 300 and controlling the function of the display device 200 by controlling the user interface on the mobile terminal 300. The audio and video content displayed on the mobile terminal 300 can also be transmitted to the display device 200, so as to realize the synchronous display function.

As also shown in fig. 1, the display apparatus 200 also performs data communication with the server 400 through various communication means. The display device 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 400 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, as well as Electronic Program Guide (EPG) interactions. The server 400 may be a cluster or a plurality of clusters, and may include one or more types of servers. Other web service contents such as video on demand and advertisement services are provided through the server 400.

The display device 200 may be a liquid crystal display, an OLED display, a projection display device. The particular 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 of a computer support function including, but not limited to, a network tv, an intelligent tv, an Internet Protocol Tv (IPTV), and the like, in addition to the broadcast receiving tv function.

A hardware configuration block diagram of a display device 200 according to an exemplary embodiment is exemplarily shown in fig. 2.

In some embodiments, at least one of the controller 250, the tuner demodulator 210, the communicator 220, the detector 230, the input/output interface 255, the display 275, the audio output interface 285, the memory 260, the power supply 290, the user interface 265, and the external device interface 240 is included in the display apparatus 200.

In some embodiments, a display 275 receives image signals originating from the first processor output and displays video content and images and components of the menu manipulation interface.

In some embodiments, the display 275, includes a display screen component for presenting a picture, and a driving component that drives the display of an image.

In some embodiments, the video content is displayed from broadcast television content, or alternatively, from various broadcast signals that may be received via wired or wireless communication protocols. Alternatively, various image contents received from the network communication protocol and sent from the network server side can be displayed.

In some embodiments, the display 275 is used to present a user-manipulated UI interface generated in the display device 200 and used to control the display device 200.

In some embodiments, a driver assembly for driving the display is also included, depending on the type of display 275.

In some embodiments, display 275 is a projection display and may also include a projection device and a projection screen.

In some embodiments, communicator 220 is a component for communicating with external devices or external servers according to various communication protocol types. For example: the communicator 220 may include at least one of a Wifi module 221, a bluetooth module 222, a wired ethernet module 223, and other network communication protocol modules or near field communication protocol modules, and an infrared receiver.

In some embodiments, the display apparatus 200 may establish control signal and data signal transmission and reception with the external control device 100 or the content providing apparatus through the communicator 220.

In some embodiments, the user interface 265 may be configured to receive infrared control signals from a control device 100 (e.g., an infrared remote control, etc.).

In some embodiments, the detector 230 is a signal used by the display device 200 to collect an external environment or interact with the outside.

In some embodiments, the detector 230 includes a light receiver, a sensor for collecting the intensity of ambient light, and parameters changes can be adaptively displayed by collecting the ambient light, and the like.

In some embodiments, the detector 230 may further include an image collector 232, such as a camera, a video camera, etc., which may be configured to collect external environment scenes, collect attributes of the user or gestures interacted with the user, adaptively change display parameters, and recognize user gestures, so as to implement a function of interaction with the user.

In some embodiments, the detector 230 may also include a temperature sensor or the like, such as by sensing ambient temperature.

In some embodiments, the display apparatus 200 may adaptively adjust a display color temperature of an image. For example, the display apparatus 200 may be adjusted to display a cool tone when the temperature is in a high environment, or the display apparatus 200 may be adjusted to display a warm tone when the temperature is in a low environment.

In some embodiments, the detector 230 may further include a sound collector 231 or the like, such as a microphone, which may be used to receive the user's voice. Illustratively, a voice signal including a control instruction of the user to control the display device 200, or to collect an ambient sound for recognizing an ambient scene type, so that the display device 200 can adaptively adapt to an ambient noise.

In some embodiments, as shown in fig. 2, the input/output interface 255 is configured to allow data transfer between the controller 250 and external other devices or other controllers 250. Such as receiving video signal data and audio signal data of an external device, or command instruction data, etc.

In some embodiments, the external device interface 240 may include, but is not limited to, the following: the interface can be any one or more of a high-definition multimedia interface (HDMI), an analog or data high-definition component input interface, a composite video input interface, a USB input interface, an RGB port, and the like. The plurality of interfaces may form a composite input/output interface.

In some embodiments, as shown in fig. 2, the tuning demodulator 210 is configured to receive a broadcast television signal through a wired or wireless receiving manner, perform modulation and demodulation processing such as amplification, mixing, resonance, and the like, and demodulate an audio and video signal from a plurality of wireless or wired broadcast television signals, where the audio and video signal may include a television audio and video signal carried in a television channel frequency selected by a user and an EPG data signal.

In some embodiments, the frequency points demodulated by the tuner demodulator 210 are controlled by the controller 250, and the controller 250 can send out control signals according to user selection, so that the modem responds to the television signal frequency selected by the user and modulates and demodulates the television signal carried by the frequency.

In some embodiments, the broadcast television signal may be classified into a terrestrial broadcast signal, a cable broadcast signal, a satellite broadcast signal, an internet broadcast signal, or the like according to the broadcasting system of the television signal. Or may be classified into a digital modulation signal, an analog modulation signal, and the like according to a modulation type. Or the signals are classified into digital signals, analog signals, and the like according to the type of the signals.

In some embodiments, the controller 250 and the modem 210 may be located in different separate devices, that is, the modem 210 may also be located in an external device of the main device where the controller 250 is located, such as an external set-top box. Therefore, the set top box outputs the television audio and video signals modulated and demodulated by the received broadcast television signals to the main body equipment, and the main body equipment receives the audio and video signals through the first input/output interface.

In some embodiments, the controller 250 controls the operation of the display device and responds to user operations through various software control programs stored in memory. The controller 250 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 275, the controller 250 may perform an operation related to the object selected by the user command.

In some embodiments, 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 the 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.

As shown in fig. 2, the controller 250 includes at least one of a Random Access Memory 251 (RAM), a Read-Only Memory 252 (ROM), a Graphics Processing Unit 253 (GPU), a Central Processing Unit 254 (CPU), an input/output interface 255, and a communication Bus 256 (Bus). Wherein a communication bus connects the various components.

In some embodiments, RAM 251 is used to store temporary data for the operating system or other programs that are running.

In some embodiments, ROM 252 is used to store instructions for various system boots.

In some embodiments, the ROM 252 is used to store a Basic Input Output System (BIOS). The system is used for completing power-on self-test of the system, initialization of each functional module in the system, a driver of basic input/output of the system and booting an operating system.

In some embodiments, when the power-on signal is received, the display device 200 starts to power up, the CPU executes the system boot instruction in the ROM 252, and copies the temporary data of the operating system stored in the memory to the RAM 251 so as to start or run the operating system. After the start of the operating system is completed, the CPU copies the temporary data of the various application programs in the memory to the RAM 251, and then, the various application programs are started or run.

In some embodiments, processor 254 is used to execute operating system and application program instructions stored in memory. 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 demonstrative embodiments, processor 254 may include a plurality of processors. The plurality of processors may include a main processor and one or more sub-processors. 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. One or more sub-processors for one operation in a standby mode or the like.

In some embodiments, the graphics processor 253 is used to generate 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 the rendering device is used for rendering various objects obtained based on the arithmetic unit, and the rendered objects are used for being displayed on a display.

In some embodiments, video processor 270 is configured to receive an external video signal, and perform video processing such as decompression, decoding, scaling, noise reduction, frame rate conversion, resolution conversion, image synthesis, etc., according to a standard codec protocol of the input signal, so as to obtain a signal that can be displayed or played on directly displayable device 200.

In some embodiments, video processor 270 includes a demultiplexing module, a video decoding module, an image compositing 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 and an audio signal.

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 image 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 an input video frame rate, such as a 60Hz frame rate into a 120Hz frame rate or a 240Hz frame rate, and the normal format is implemented in, for example, an interpolation frame mode.

The display format module is used for converting the received video output signal after the frame rate conversion, and changing the signal to conform to the signal of the display format, such as outputting an RGB data signal.

In some embodiments, the graphics processor 253 and the video processor may be integrated or separately configured, and when the graphics processor and the video processor are integrated, the graphics processor and the video processor may perform processing of graphics signals output to the display, and when the graphics processor and the video processor are separately configured, the graphics processor and the video processor may perform different functions, respectively, for example, a GPU + frc (frame Rate conversion) architecture.

In some embodiments, 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 noise reduction, digital-to-analog conversion, and amplification processes to obtain an audio signal that can be played in a speaker.

In some embodiments, video processor 270 may comprise one or more chips. The audio processor may also include one or more chips.

In some embodiments, the video processor 270 and the audio processor 280 may be separate chips or may be integrated with the controller in one or more chips.

In some embodiments, the audio output, under the control of controller 250, receives sound signals output by audio processor 280, such as: the speaker 286, and an external sound output terminal of a generating device that can output to an external device, in addition to the speaker carried by the display device 200 itself, such as: external sound interface or earphone interface, etc., and may also include a near field communication module in the communication interface, for example: and the Bluetooth module is used for outputting sound of the Bluetooth loudspeaker.

The power supply 290 supplies power to the display device 200 from the power input from the external power source under the control of the controller 250. The power supply 290 may include a built-in power supply circuit installed inside the display apparatus 200, or may be a power supply interface installed outside the display apparatus 200 to provide an external power supply in the display apparatus 200.

A user interface 265 for receiving an input signal of a user and then transmitting the received user input signal to the controller 250. The user input signal may be a remote controller signal received through an infrared receiver, and various user control signals may be received through the network communication module.

In some embodiments, the user inputs a user command through the control apparatus 100 or the mobile terminal 300, the user input interface responds to the user input through the controller 250 according to the user input, and the display device 200 responds to the user input through the controller 250.

In some embodiments, a user may enter user commands on a Graphical User Interface (GUI) displayed on the display 275, and the user 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 user input interface receives the user input command by recognizing the sound or gesture through the sensor.

In some embodiments, a "user interface" is a media interface for interaction and information exchange between an application or operating system and a user that enables conversion between an internal form of information and a form that is acceptable to the user. A commonly used presentation form of the User Interface is a Graphical User Interface (GUI), which refers to a User Interface related to computer operations and displayed in a graphical manner. It may be an interface element such as an icon, a window, a control, etc. displayed in the display screen of the electronic 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.

The memory 260 includes a memory storing various software modules for driving the display device 200. Such as: various software modules stored in the first memory, including: at least one of a basic module, a detection module, a communication module, a display control module, a browser module, and various service modules.

The base module is a bottom layer software module for signal communication between each hardware in the display device 200 and for sending processing and control signals to the upper layer module. The detection module is used for collecting various information from various sensors or user input interfaces, and the management module is used for 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 used for controlling the display to display the image content, and can be used for playing the multimedia image content, UI interface and other information. And the communication module is used for carrying out control and data communication with external equipment. And the browser module is used for executing a module for data communication between the browsing servers. And the service module is used for providing various services and modules including various application programs. Meanwhile, the memory 260 may also store a visual effect map for receiving external data and user data, images of various items in various user interfaces, and a focus object, and the like.

Fig. 3 exemplarily shows a block diagram of the configuration of the control apparatus 100 according to an exemplary embodiment. As shown in fig. 3, the control device 100 includes a controller 110, a communication interface 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 may receive an input operation instruction of a user and convert the operation instruction into an instruction recognizable and responsive by the display device 200, serving as an interaction intermediary 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 for controlling the display device 200 according to user's demands.

In some embodiments, as shown in fig. 1, a mobile terminal 300 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 function of controlling the physical keys of the apparatus 100 by installing an application, various function keys or virtual buttons of a graphical user interface available on the mobile terminal 300 or other intelligent electronic device.

The controller 110 includes a processor 112 and RAM 113 and ROM 114. The controller is used for controlling the operation of the control device 100, as well as the communication cooperation among the internal components and the external and internal data processing functions.

The communication interface 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 communication interface 130 may include at least one of a WiFi chip 131, a bluetooth module 132, an NFC module 133, and other near field communication modules.

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, keys 144, and other input interfaces. 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, the interface 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. And the following steps: when the rf signal interface is used, a user input command needs to be converted into a digital signal, and then modulated according to an 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 communication interface 130 and an input-output interface 140. The control device 100 is configured with a communication interface 130, such as: the WiFi, bluetooth, NFC, etc. modules may transmit the user input command to the display device 200 through the WiFi protocol, or the bluetooth protocol, or the NFC protocol code.

A memory 190 for storing various operation programs, data and applications for driving and controlling the control apparatus 200 under the control of the controller. The memory 190 may store various control signal commands input by a user.

And a power supply 180 for providing operation power support for the elements of the control device 100 under the control of the controller. A battery and associated control circuitry.

In some embodiments, the system may include a Kernel (Kernel), a command parser (shell), a file system, and an application program. The kernel, shell, and file system together form the basic operating system structure that allows users to manage files, run programs, and use the system. After power-on, the kernel is started, kernel space is activated, hardware is abstracted, hardware parameters are initialized, and virtual memory, a scheduler, signals and interprocess communication (IPC) are operated and maintained. And after the kernel is started, loading the Shell and the user application program. The application program is compiled into machine code after being started, and a process is formed.

Referring to fig. 4, in some embodiments, the system is divided into four layers, which are an Application (Applications) layer (abbreviated as "Application layer"), an Application Framework (Application Framework) layer (abbreviated as "Framework layer"), an Android runtime (Android runtime) and system library layer (abbreviated as "system runtime library layer"), and a kernel layer from top to bottom.

In some embodiments, at least one application program runs in the application program layer, and the application programs can be Window (Window) programs carried by an operating system, system setting programs, clock programs, camera applications and the like; or may be an application developed by a third party developer such as a hi program, a karaoke program, a magic mirror program, or the like. In specific implementation, the application packages in the application layer are not limited to the above examples, and may actually include other application packages, which is not limited in this embodiment of the present application.

The framework layer provides an Application Programming Interface (API) and a programming framework for the application program of the application layer. The application framework layer includes a number of predefined functions. The application framework layer acts as a processing center that decides to let the applications in the application layer act. The application program can access the resource in the system and obtain the service of the system in execution through the API interface

As shown in fig. 4, in the embodiment of the present application, the application framework layer includes a manager (Managers), a Content Provider (Content Provider), and the like, where the manager includes at least one of the following modules: an Activity Manager (Activity Manager) is used for interacting with all activities running in the system; a Location Manager (Location Manager) for providing access to the system Location service to the system service or application; a Package Manager (Package Manager) for retrieving various information related to an application Package currently installed on the device; a Notification Manager (Notification Manager) for controlling display and clearing of Notification messages; a Window Manager (Window Manager) is used to manage the icons, windows, toolbars, wallpapers, and desktop components on a user interface.

In some embodiments, the activity manager is to: managing the life cycle of each application program and the usual navigation backspacing functions, such as controlling the exit of the application program (including switching the user interface currently displayed in the display window to the system desktop), opening, backing (including switching the user interface currently displayed in the display window to the previous user interface of the user interface currently displayed), and the like.

In some embodiments, the window manager is configured to manage all window processes, such as obtaining a display size, determining whether a status bar is available, locking a screen, intercepting a screen, controlling a display change (e.g., zooming out, dithering, distorting, etc.) and the like.

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

In some embodiments, the kernel layer is a layer between hardware and software. As shown in fig. 4, the core layer includes at least one of the following drivers: audio drive, display drive, bluetooth drive, camera drive, WIFI drive, USB drive, HDMI drive, sensor drive (such as fingerprint sensor, temperature sensor, touch sensor, pressure sensor, etc.), and so on.

In some embodiments, the kernel layer further comprises a power driver module for power management.

In some embodiments, software programs and/or modules corresponding to the software architecture of fig. 4 are stored in the first memory or the second memory as shown in fig. 2 or fig. 3.

In some embodiments, taking the magic mirror application (photographing application) as an example, when the remote control receiving device receives a remote control input operation, a corresponding hardware interrupt is sent to the kernel layer. The kernel layer processes the input operation into an original input event (including information such as a value of the input operation, a timestamp of the input operation, etc.). The raw input events are stored at the kernel layer. The application program framework layer obtains an original input event from the kernel layer, identifies a control corresponding to the input event according to the current position of the focus and uses the input operation as a confirmation operation, the control corresponding to the confirmation operation is a control of a magic mirror application icon, the magic mirror application calls an interface of the application framework layer to start the magic mirror application, and then the kernel layer is called to start a camera driver, so that a static image or a video is captured through the camera.

In some embodiments, for a display device with a touch function, taking a split screen operation as an example, the display device receives an input operation (such as a split screen operation) that a user acts on a display screen, and the kernel layer may generate a corresponding input event according to the input operation and report the event to the application framework layer. The window mode (such as multi-window mode) corresponding to the input operation, the position and size of the window and the like are set by an activity manager of the application framework layer. And the window management of the application program framework layer draws the window according to the setting of the activity manager, then sends the drawn window data to the display driver of the kernel layer, and the display driver displays the corresponding application interface in different display areas of the display screen.

In some embodiments, as shown in fig. 5, the application layer containing at least one application may display a corresponding icon control in the display, such as: the system comprises a live television application icon control, a video on demand application icon control, a media center application icon control, an application center icon control, a game application icon control and the like.

In some embodiments, the live television application may provide live television from different 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.

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

In some embodiments, the media center application may provide various applications for multimedia content playback. For example, a media center, which may be other than live television or video on demand, may provide services that a user may access to various images or audio through a media center application.

In some embodiments, an application center may provide storage for various applications. 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 the smart television. The application center may obtain these applications from different sources, store them in local storage, and then be operable on the display device 200.

The display device 200 may generally support image display corresponding to a plurality of signal channels, and parameters such as image content, image brightness, image contrast, image quality, and the like provided by different signal channels are different, so that a user may select different signal channels to watch programs according to his own needs.

In general, the process of selecting a different signal channel by the user may be regarded as the process of switching the display device 200 from the current signal channel to another signal channel, and the processing flow is as follows: when the signal channel of the display device 200 is switched to a new signal channel, and the controller in the display device 200 detects a new signal in the new signal channel, the new signal is analyzed to obtain the related parameters of the new signal, then the image parameters for controlling the image display are set in the display device according to the related parameters of the new signal, and the display device 200 can display the image after the setting is completed.

However, in the above processing flow of the display device 200, it is necessary to wait for the display device 200 to completely decode the new signal before setting the image parameters, and in the case of very many image parameters, the processing flow takes a long time and the processing efficiency is also reduced; especially when the new signal is a digital signal, the time for the display device 200 to decode it is longer, and then the time for setting the image parameters is superimposed, so that the processing efficiency of the above-described processing flow is lower. In this case, after the display device 200 switches the signal channels, the image corresponding to the new signal channel may be displayed at a long time interval, thereby affecting the experience of the user watching the display device 200.

Based on the above problem, the embodiment of the application provides a display method for an image on a display device and a display device, which can improve the processing efficiency when the display device 200 switches channels, accelerate the display speed of the image, and ensure the experience of a user watching the display device 200.

Fig. 6 is a flowchart illustrating a method for displaying an image on a display device according to an embodiment of the present application. As shown in fig. 6, the method is implemented on the display device 200, and may include the following steps:

and S101, determining a channel to be switched according to the channel switching instruction.

Wherein the channel is used to represent a channel for supplying an image signal to the display apparatus 200. The display device 200 may generally support a variety of channels, such as a DTV (Digital Television) channel, an ATV (Analog Television) channel, an HDMI (High Definition Multimedia Interface) channel, an AV (Audio Video) channel, or a Media channel, and so on. Generally, the brightness, contrast, image quality, resolution, etc. of images provided by different channels are different, so that a user can select different channels to display images according to the viewing requirements of the user. The channel that the user wants to select is the channel to be switched in the embodiment of the application, for example, the user wants to select the channel a in the DTV, and the channel to be switched is the DTV.

When the user selects a channel, the user may operate the remote controller, and at this time, the remote controller may send a channel switching instruction to the display device 200. The channel switching command includes the name of the channel to be switched, so that the display device 200 can determine which channel to be switched is.

In this embodiment of the present application, a general image parameter and a signal characteristic parameter corresponding to each channel supported by the display device 200 may be configured in advance, where the general image parameter includes: parameters related to channels such as brightness and contrast of the image; the presetting of the signal characteristic parameters comprises the following steps: the resolution of the image, the definition of the image, and dynamic backlight control parameters, etc. are parameters related to the image characteristics.

Fig. 7 is a flowchart illustrating a method for setting a parameter set according to an embodiment of the present application. As shown in fig. 7, in some embodiments, the method for configuring the parameter set in advance may specifically include the following steps:

in step S201, all channels supportable by the display device 200 are acquired.

For example, as described above, channels that can be currently supported by the display device 200 include a DTV channel, an ATV channel, an HDMI channel, an AV channel, a Media channel, and the like.

Step S202, according to the characteristics of the channels, setting preset general image parameters and preset signal characteristic parameters for each channel respectively.

This step can be regarded as a prediction process for the general image parameters and signal characteristic parameters of each channel, i.e. selecting one of the most likely general image parameters and signal characteristic parameters. In general, the display device 200 may support a plurality of channels, and thus, for each channel, it is necessary to predict its corresponding general image parameter and signal characteristic parameter. However, since the characteristics of different channels are different from each other, the method of setting parameters for each channel is also different.

For example, according to the characteristics of different channels, the general image parameters and the signal characteristic parameters set by the image module when the channel is used for the previous time can be used as the preset general image parameters and the preset signal characteristic parameters of the channel; or, the preset general image parameter and the preset signal characteristic parameter of the channel may be set according to the characteristics of different channels and the experience value of the technician operation, and the like.

Step S203, a parameter set corresponding to the channel is formed by using the preset general image parameter and the preset signal characteristic parameter.

For example, a parameter set corresponding to the DTV channel is formed according to a preset general image parameter and a preset signal characteristic parameter of the DTV channel; and forming a parameter set corresponding to the ATV channel according to the preset general image parameters and the preset signal characteristic parameters of the ATV channel. And then, when the DTV channel or the ATV channel is used next time, the parameter set corresponding to the DTV channel or the ATV channel can be acquired again. Fig. 8 is a schematic diagram illustrating a parameter set in a display device according to an embodiment of the present application.

As shown in fig. 8, a plurality of channels such as a DTV channel, an ATV channel, an HDMI channel, an AV channel, and a Media channel exist in the display device 200, each channel corresponds to a configured parameter set, and the parameter set includes a preset pass image parameter and a preset signal characteristic parameter.

And S102, acquiring a parameter set corresponding to the channel to be switched.

In the embodiment of the present application, the general image parameter and the signal characteristic parameter corresponding to each channel of the display device 200 are stored in one parameter set, and for convenience of distinguishing, the general image parameter and the signal characteristic parameter in the parameter set are respectively referred to as a preset general image parameter and a preset signal characteristic parameter.

Step S103, when decoding the image signal in the channel to be switched, setting the preset general image parameter and the preset signal characteristic parameter in the parameter set in the image module for controlling the image display.

Generally, the display device 200 is provided with a functional module such as an image module capable of controlling image display, and such a module can control the brightness, contrast, resolution, definition, etc. of an image according to a series of parameters in an image signal, so as to display an image with a quality meeting the user's requirements on the display 275. In the current channel switching process flow, since the process of setting the parameter for the image module is performed after the display device 200 decodes the image signal each time, the entire process flow of channel switching is time-consuming. In the embodiment of the present application, the parameters are configured for each channel in advance, after the channel to be switched is determined, the parameter set corresponding to each channel can be directly obtained, and the preset general image parameters and the preset signal characteristic parameters in the parameter set are set in the image module for controlling image display while the image signal in the channel to be switched is decoded, so that the time for decoding by the display device 200 is fully utilized to set the parameters.

In the embodiment of the present application, each channel to be switched includes, in addition to the preset general image parameter and the preset signal characteristic parameter set for the channel by the display device 200, a real general image parameter and a real signal characteristic parameter in actual use.

And step S104, under the condition that the real general image parameters obtained after decoding are the same as the preset general image parameters and the real signal characteristic parameters obtained after decoding are the same as the preset signal characteristic parameters, controlling the image module to directly display the images corresponding to the image signals in the channel to be switched according to the preset general image parameters and the preset signal characteristic parameters.

For example, the display apparatus 200 configures parameter sets for both the DTV channel and the ATV channel, if it is required to switch the channel currently used by the display apparatus 200 to the DTV channel according to the requirement of the user, the display apparatus 200 needs to set preset parameters in a parameter set corresponding to the DTV channel in the image module while decoding an image signal in the DTV channel, and then if a real general image parameter of the decoded DTV channel is the same as the preset general image parameter in the parameter set and a real signal characteristic parameter is the same as the preset signal characteristic parameter in the parameter set, the image module may be controlled to directly display an image transmitted by the DTV channel according to the preset parameters in the parameter set corresponding to the DTV channel.

As can be seen from the above, since the preset general-purpose image parameter and the preset signal characteristic parameter are configured in advance, the preset parameter can be set while the display device 200 decodes, which makes full use of the decoding time. In addition, when the real general image parameter is the same as the preset general image parameter and the real signal characteristic parameter is the same as the preset signal characteristic parameter, the display apparatus 200 does not need to set the parameters in the image module again. According to the method in the embodiment of the application, the step of setting the image module parameters can be omitted, the time for switching the channels of the display device 200 is shortened, the processing efficiency of the display device 200 when the channels are switched is further improved, the display speed of the image is accelerated, and the experience of a user watching the display device 200 is ensured.

Certainly, in practical applications, not all the real general image parameters and real signal characteristic parameters corresponding to the channels to be switched are the same as the preset general image parameters and the preset signal characteristic parameters. Therefore, in some embodiments, after the preset general image parameter and the preset signal characteristic parameter in the parameter set are set in the image module controlling the image display while the image signal in the channel to be switched is decoded, the following steps may be further included:

step S301, when the real general image parameter obtained after decoding is the same as the preset general image parameter, and the real signal characteristic parameter obtained after decoding is different from the preset signal characteristic parameter, re-setting the real signal characteristic parameter in the image module.

When the real general image parameters corresponding to the image signals in the channel to be switched are the same as the preset general image parameters, but the real signal characteristic parameters are different from the preset signal characteristic parameters, the parameters set before the image module can not be used. If the previous preset parameters are still used, the display effect of the current image is affected. Therefore, in the embodiment of the present application, the image module needs to be reset, and the preset signal characteristic parameter set before is replaced by the real signal characteristic parameter.

And step S302, controlling the image module to display the image corresponding to the image signal in the channel to be switched according to the preset general image parameter and the reset real signal characteristic parameter.

In addition, after the parameters of the image module are reset, the parameter set is also updated, and the preset signal characteristic parameters in the parameter set need to be updated to the real signal characteristic parameters. The next time the display device 200 switches to the same channel again, the parameter set updated this time is used.

In some embodiments, after the preset general image parameter and the preset signal characteristic parameter in the parameter set are set in the image module controlling the image display while the image signal in the channel to be switched is decoded, the method may further include the following steps:

step S401, when the real general image parameter obtained after decoding is different from the preset general image parameter, and the real signal characteristic parameter obtained after decoding is different from the preset signal characteristic parameter, re-setting the real signal characteristic parameter and the real general image parameter in the image module.

If the situation in step S401 occurs, it also indicates that the previously set parameters of the image module can no longer be used. If the previous preset parameters are still used, the display effect of the current image is affected. Therefore, in the embodiment of the present application, the image module also needs to be reset, the preset general image parameter that is set before is replaced with the real general image parameter, and the preset signal characteristic parameter that is set before is replaced with the real signal characteristic parameter.

And step S402, controlling the image module to display the image corresponding to the image signal in the channel to be switched according to the reset real signal characteristic parameter and the real general image parameter.

In addition, after the parameters of the image module are reset, the parameter set may need to be updated, and the preset general image parameters in the parameter set need to be updated to the real general image parameters, and the preset signal characteristic parameters in the parameter set need to be updated to the real signal characteristic parameters. The next time the display device 200 switches to the same channel again, the parameter set updated this time is used.

In some embodiments, there is also a case where the real general-purpose image parameter obtained after decoding is different from the preset general-purpose image parameter, but the real signal characteristic parameter obtained after decoding is the same as the preset signal characteristic parameter, at this time, the preset general-purpose image parameter set before is also unusable, and the real general-purpose image parameter needs to be set in the image module again. And then, controlling the image module to display the image corresponding to the image signal in the channel to be switched according to the reset real general image parameter and the preset signal characteristic parameter.

Fig. 9 is an operation diagram of switching channels of a display device according to an embodiment of the present application. Fig. 9 includes contents in all the foregoing embodiments, which specifically divides all the foregoing methods into a process for preparing the display device 200 in advance and a process for switching channels by the display device 200. In the process of preparation in advance, a corresponding parameter set needs to be configured for each channel supported by the display device 200; in the process of switching the channel, after the channel to be switched is determined, obtaining a parameter set corresponding to the channel to be switched, and then setting parameters in the parameter set in an image module while decoding; and finally, judging whether the decoded real general image parameters are consistent with the preset general image parameters or not, and whether the real signal characteristic parameters are consistent with the preset signal characteristic parameters or not, and adopting corresponding means according to different judgment conditions.

In the embodiment of the present application, taking the display device 200 as an example to support a DTV channel and an ATV channel, the content in the foregoing embodiment is described as follows:

step one, a user selects a channel a in a DTV channel, and a display device 200 needs to acquire a parameter set 1 corresponding to the DTV channel; the display device 200 sets preset parameters in a parameter set 1 in an image module while decoding an image signal in a DTV channel, and then compares a real general image parameter and a real signal characteristic parameter obtained by decoding with the preset parameters in the parameter set 1, respectively, if only the real signal characteristic parameter is different from the preset signal characteristic parameter, the image module needs to be reset, the preset signal characteristic parameter previously set therein is replaced with the real signal characteristic parameter, and then the image module displays an image using the preset general image parameter and the reset real signal characteristic parameter; then, the preset signal characteristic parameters in the parameter set 1 are updated, so that the parameter set 1 becomes the parameter set 2.

Step two, the user selects the channel B in the DTV channel for the second time, and since the DTV channel is still used at this time, the display device 200 still decodes the image signal in the DTV channel this time, and at the same time, sets the image module using the preset parameters in the parameter set 2, and then compares the real general image parameters and the real signal characteristic parameters obtained by decoding with the preset parameters in the parameter set 2, respectively, and if the real general image parameters are the same as the preset general image parameters and the real signal characteristic parameters are the same as the preset signal characteristic parameters, the image module may directly display the image using the preset parameters in the parameter set 2 that have been set previously. Parameter set 2 does not need to be updated.

As can be seen from the content of the above embodiment, in the method for displaying an image on a display device in the embodiment of the present application, under the condition that the real general image parameter of the channel to be switched is the same as the preset general image parameter in the parameter set, and the real signal characteristic parameter is the same as the preset signal characteristic parameter in the parameter set, the parameter value of the image module does not need to be reset, and the image module can be directly controlled to display the image corresponding to the image signal in the channel to be switched according to the preset parameter in the parameter set. Furthermore, the processing efficiency of the display device 200 during channel switching can be improved, the display speed of the image can be increased, and the experience of the user watching the display device 200 can be ensured.

Embodiments of the present application also provide a display device that includes a display 275 and a controller 250, wherein,

a display 275 for displaying images corresponding to the image signals in the different channels;

a controller 250 for performing: determining a channel to be switched according to the channel switching instruction; the channel switching instruction is used for indicating an instruction of selecting a channel by a user received by the display device 200; the channel is used to represent a channel for supplying an image signal to the display apparatus 200; acquiring a parameter set corresponding to the channel to be switched; the parameter set is used for representing a parameter set comprising preset general image parameters related to a channel and preset signal characteristic parameters related to signals in the channel; setting the preset general image parameters and the preset signal characteristic parameters in the parameter set in an image module for controlling image display while decoding the image signals in the channel to be switched; and under the conditions that the real general image parameters obtained after decoding are the same as the preset general image parameters and the real signal characteristic parameters obtained after decoding are the same as the preset signal characteristic parameters, controlling an image module to directly display the image corresponding to the image signals in the channel to be switched according to the preset general image parameters and the preset signal characteristic parameters.

In some embodiments, the controller 250 is further configured to perform: acquiring all channels which can be supported by the display device 200; respectively setting a preset general image parameter and a preset signal characteristic parameter for the channel according to the characteristic of the channel; and forming a parameter set corresponding to the channel by using the preset general image parameter and the preset signal characteristic parameter.

In some embodiments, the controller 250 is further configured to perform: resetting the real signal characteristic parameters in the image module under the condition that the real general image parameters obtained after decoding are the same as the preset general image parameters and the real signal characteristic parameters obtained after decoding are not the same as the preset signal characteristic parameters; and controlling the image module to display the image corresponding to the image signal in the channel to be switched according to the preset general image parameter and the reset real signal characteristic parameter.

In some embodiments, the controller 250 is further configured to perform: and updating the preset signal characteristic parameters in the parameter set into the real signal characteristic parameters to obtain an updated parameter set.

In some embodiments, the controller 250 is further configured to perform: resetting the real signal characteristic parameters and the real general image parameters in an image module under the conditions that the real general image parameters obtained after decoding are different from the preset general image parameters and the real signal characteristic parameters obtained after decoding are different from the preset signal characteristic parameters; and controlling the image module to display the image corresponding to the image signal in the channel to be switched according to the reset real signal characteristic parameter and the real general image parameter.

In some embodiments, the controller 250 is further configured to perform: and updating the preset signal characteristic parameters in the parameter set to the real signal characteristic parameters, and updating the preset general image parameters in the parameter set to the real general image parameters to obtain an updated parameter set.

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, those of ordinary skill in the art will understand 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 the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

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

Claims

1. A method of displaying an image on a display device, comprising:

2. The method according to claim 1, before determining the channel to be switched according to the channel switching instruction, further comprising:

acquiring all channels which can be supported by display equipment;

3. The method according to claim 1, wherein after setting the preset general image parameter and the preset signal characteristic parameter in the parameter set in an image module controlling image display while decoding the image signal in the channel to be switched, further comprising:

4. The method according to claim 3, wherein after controlling the image module to display the image corresponding to the image signal in the channel to be switched according to the preset general image parameter and the reset real signal characteristic parameter, the method further comprises:

5. The method according to claim 1, wherein after setting the preset general image parameter and the preset signal characteristic parameter in the parameter set in an image module controlling image display while decoding the image signal in the channel to be switched, further comprising:

resetting the real signal characteristic parameters and the real general image parameters in an image module under the conditions that the real general image parameters obtained after decoding are different from the preset general image parameters and the real signal characteristic parameters obtained after decoding are different from the preset signal characteristic parameters;

6. The method according to claim 5, wherein after controlling the image module to display the image corresponding to the image signal in the channel to be switched according to the reset real signal characteristic parameter and real general image parameter, the method further comprises:

7. A display device, comprising:

a controller for performing:

determining a channel to be switched according to the channel switching instruction; the channel switching instruction is used for representing an instruction of selecting a channel by a user, which is received by the display equipment; the channel is used for representing a channel for providing an image signal for a display device;

and under the conditions that the real general image parameters obtained after decoding are the same as the preset general image parameters and the real signal characteristic parameters obtained after decoding are the same as the preset signal characteristic parameters, controlling an image module to directly display the image corresponding to the image signal in the channel to be switched according to the preset general image parameters and the preset signal characteristic parameters.

8. The display device according to claim 7, wherein the controller is further configured to perform:

acquiring all channels which can be supported by display equipment;

9. The display device according to claim 7, wherein the controller is further configured to perform:

10. The display device according to claim 7, wherein the controller is further configured to perform: