CN111526398B

CN111526398B - Display device

Info

Publication number: CN111526398B
Application number: CN202010288705.3A
Authority: CN
Inventors: 王晓军; 仲伟男
Original assignee: Hisense Visual Technology Co Ltd
Current assignee: Hisense Visual Technology Co Ltd
Priority date: 2019-11-04
Filing date: 2020-04-14
Publication date: 2022-04-12
Anticipated expiration: 2040-04-14
Also published as: WO2021088253A1; CN112785985A; CN111526398A; CN112785985B

Abstract

The application provides a display device. The display device includes: a display screen configured to present image content; a first controller configured to: when a starting-up instruction is received, detecting the stability of a line synchronization signal in a first signal to obtain a detection result; the first signal is used for being sent to the display screen, so that the display screen can display image content according to the first signal; when the detection results of n times of succession all indicate that the line synchronizing signal is stable, control the display screen to open, n is the positive integer that is greater than 1, avoids first signal unstability to cause the influence to the display effect of display screen.

Description

Display device

The present application claims priority from chinese patent application filed on 04/11/2019 under the name "display device" and having application number 201911067364.0, the entire contents of which are incorporated herein by reference.

Technical Field

The application relates to the technical field of display control, in particular to a display device.

Background

With the continuous development of science and technology and economy, the living standard of people is higher and higher, and the display quality of display equipment such as televisions also has higher and higher requirements, for example, people hope that the phenomenon of screen flashing or screen blooming does not occur when the display equipment displays images.

In the process of displaying by the display device, the main board sends a signal, such as an HDMI signal, to the display screen, the display screen performs image display according to the received signal, and when the state of the signal sent by the main board is unstable, the display screen flickers or flickers appear when performing image display according to the signal.

However, the prior art has no better solution for how to avoid the phenomenon of screen flashing or screen blooming.

Disclosure of Invention

The application provides a display device to standby power is too high when solving dual supply parallel power supply among the prior art to and because surge current's production and lead to thermistor overheated and take place the problem of damage.

The present application provides a display device, the device comprising:

a display screen configured to present image content;

a first controller configured to:

when a starting-up instruction is received, detecting the stability of a line synchronization signal in a first signal to obtain a detection result; the first signal is used for being sent to the display screen, so that the display screen can display image content according to the first signal;

and when the detection results of n times of succession indicate that the line synchronizing signal is stable, controlling the display screen to be opened, wherein n is a positive integer greater than 1.

Further, the first controller is further configured to:

if the detection result indicates that the synchronous signal is unstable, determining whether the continuous unstable times of the horizontal synchronous signal are equal to a preset value or not to obtain an unstable state detection result;

and executing corresponding operation according to the unstable state detection result.

In a particular implementation, the first controller is configured to:

if the unstable state detection result indicates that the continuous unstable times of the line synchronization signal are equal to a preset value, resetting the input port of the display screen; executing the step of detecting the stability of the horizontal synchronizing signal in the first signal to obtain a detection result;

and if the unstable state detection result indicates that the continuous unstable times of the horizontal synchronization signal are smaller than a preset value, executing the step of detecting the stability of the horizontal synchronization signal in the first signal to obtain a detection result.

Optionally, the first controller is configured to:

before the input port of the display screen is reset, detecting whether the clock of the first signal is stable;

if the clock of the first signal is stable, executing the step of resetting the input port of the display screen;

otherwise, repeatedly detecting whether the clock of the first signal is stable or not until the clock is stable.

Further, the first controller is configured to:

before the detection of the stability of the horizontal synchronization signal in the first signal, detecting whether a phase-locked loop of the first signal is locked;

and if the phase-locked loop is locked, executing the step of detecting the stability of the horizontal synchronizing signal.

In a particular implementation, the first controller is configured to:

if the detection result indicates that the horizontal synchronizing signal is stable, determining whether the continuous stable times of the horizontal synchronizing signal are equal to n;

if so, executing the control to open the display screen;

otherwise, executing the step of detecting the stability of the horizontal synchronizing signal in the first signal to obtain a detection result.

Optionally, the apparatus further comprises: a signal transfer device;

the signal transfer device is configured to:

receiving the first signal;

converting the first signal into a second signal in response to control of the first controller;

optionally, the first controller is configured to: and controlling the signal switching device to detect the stability of the horizontal synchronization signal in the first signal to obtain a detection result.

In a particular implementation, the first controller is configured to:

if the unstable state detection result indicates that the continuous unstable times of the line synchronization signal are equal to a preset value, resetting the input port of the signal switching device; executing the step of controlling the signal switching device to detect the stability of the horizontal synchronization signal in the first signal to obtain a detection result;

and if the unstable state detection result indicates that the continuous unstable times of the horizontal synchronization signal are smaller than a preset value, controlling the signal switching device to detect the stability of the horizontal synchronization signal in the first signal to obtain a detection result.

In a particular implementation, the first controller is configured to:

before the input port of the signal switching device is reset, controlling the signal switching device to detect whether the clock of the first signal is stable;

if the clock of the first signal is stable, executing the reset operation on the input port of the signal switching device;

otherwise, the control of the signal transfer device to detect whether the clock of the first signal is stable is repeatedly executed until the clock of the first signal is stable.

In a particular implementation, the first controller is configured to:

before the stability of the horizontal synchronizing signal in the first signal is detected, controlling the signal switching device to detect whether a phase-locked loop of the first signal is locked;

and if the phase-locked loop is locked, executing the step of controlling the signal switching device to detect the stability of the horizontal synchronization signal in the first signal to obtain a detection result.

Optionally, the first controller is configured to:

and before the display screen is controlled to be opened, controlling the signal transfer device to convert the first signal into the second signal.

Optionally, the system further comprises a second controller;

the second controller is configured to: and sending the first signal to the signal switching device.

The application provides a display device, first controller detects the stability of the line synchronizing signal in the first signal when receiving the start instruction, detects all to obtain the stable testing result of line synchronizing signal after n (n is greater than 1) detects in succession, and the control display screen is opened, avoids first signal unstability to cause the influence to the display effect of display screen.

Drawings

In order to more clearly illustrate the technical solutions in the present application or the related art, the drawings needed to be used in the description of the embodiments or the related art are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without inventive labor.

FIG. 1 is a schematic diagram of an operational scenario between a display device and a control apparatus;

FIG. 2a is a diagram illustrating a hardware structure of a hardware system in the display device of FIG. 1;

FIG. 2b is a diagram illustrating a hardware structure of a hardware system in a display device;

FIG. 3 is a schematic diagram of the connection of the power supply assembly to the load of FIG. 2 a;

FIG. 4 is a schematic diagram of a power architecture of FIG. 2 a;

FIG. 5 is a block diagram of a hardware architecture of the display device of FIG. 2 a;

FIG. 6 is a schematic diagram of a functional configuration of the display device of FIG. 2 a;

fig. 7 is a schematic structural diagram of a display device according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of a display device according to another embodiment of the present application;

fig. 9 is a schematic structural diagram of a display device according to another embodiment of the present application;

fig. 10 is a flowchart illustrating a display control method according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described 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 embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms "first," "second," "third," "fourth," and the like in the description and in the claims of the present application and in the drawings described above, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The display device provided by the embodiments of the present application may have a display device of a single system and a single display structure. For example, the display device includes: a display screen configured to display a screen image; a sound reproducing device configured to play sound; and a power supply circuit configured to supply power to a load of the display device, the load including the display screen, the sound reproducing apparatus, and the like.

Alternatively, the present application is mainly directed to a sound-picture synchronization process of a display device having a dual-system and dual-display structure, that is, a display device having a first controller (a first hardware system), a second controller (a second hardware system), a first display screen, and a second display screen, and the structure, function, implementation, and the like of the display device having the dual-system hardware structure will be described in detail below.

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

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

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

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

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

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

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

The term "user interface" as used in the embodiments of the present application is a media interface for interaction and information exchange between an application or operating system and a user, which enables conversion between an internal form of information and a user-acceptable form. 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 term "gesture" as used in the embodiments of the present application refers to a user behavior used to express an intended idea, action, purpose, or result through a change in hand shape or an action such as hand movement.

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

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

The control device 100 may be a remote controller 100A, which can communicate with the display device 200 through an infrared protocol communication, a bluetooth protocol communication, a ZigBee (ZigBee) protocol communication, or other short-range communication, and is used to control the display device 200 in a wireless or other wired manner. The user may input a user instruction through a key on the remote controller 100A, voice input, control panel input, or the like 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 movement keys, a voice input key, a menu key, a power on/off key, etc. on the remote controller 100A to control the functions of 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, which may communicate with the display device 200 through a Local Area Network (LAN), a Wide Area Network (WAN), a Wireless Local Area Network (WLAN), or other networks, and implement control of the display device 200 through an application program corresponding to the display device 200. For example, the display device 200 is controlled using an application program running on the smart device. The application may provide various controls to the User through an intuitive User Interface (UI) on a screen associated with the smart device.

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

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

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

The display device 200 includes: the display device comprises a first display screen 201 and a second display screen 202, wherein the first display screen 201 and the second display screen 202 are independent from each other, and a double-hardware control system is adopted between the first display screen 201 and the second display screen 202.

The first display 201 and the second display 202 may be used to display different display screens. For example, the first display screen 201 may be used for screen display of conventional television programs, and the second display screen 202 may be used for screen display of auxiliary information such as notification type messages, voice assistants, and the like.

In some embodiments, the content displayed on the first display screen 201 and the content displayed on the second display screen 202 may be independent of each other. For example, when the first display screen 201 plays a television program, the second display screen 202 may display information such as time, weather, temperature, a reminder message, and the like, which are not related to the television program.

In some embodiments, there may also be an association between the content displayed by the first display screen 201 and the content displayed by the second display screen 202. For example, when the first display screen 201 plays a main screen of a video chat, the second display screen 202 may display information such as a head portrait, a chat duration, and the like of a user currently accessing the video chat.

In some embodiments, some or all of the content displayed by the second display screen 202 may be adjusted to the first display screen 201. For example, when the first display 201 plays a main screen of a video chat, information such as time, weather, temperature, and a reminder message displayed on the second display 202 may be adjusted to the first display 201 to be displayed, and the second display 202 may display other information.

In addition, the first display screen 201 displays a multi-party interactive picture while displaying a traditional television program picture, and the multi-party interactive picture does not block the traditional television program picture. The display mode of the traditional television program picture and the multi-party interactive picture is not limited by the application. For example, the position and the size of the traditional television program picture and the multi-party interactive picture can be set according to the priority of the traditional television program picture and the multi-party interactive picture.

Taking the example that the priority of the traditional television program picture is higher than that of the multi-party interactive picture, the area of the traditional television program picture is larger than that of the multi-party interactive picture, and the multi-party interactive picture can be positioned on one side of the traditional television program picture and can also be arranged in any area of the traditional television program picture in a floating manner.

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

The display apparatus 200 may additionally provide an intelligent network tv function that provides a computer support function in addition to the broadcast receiving tv function. Examples include a web tv, a smart tv, an Internet Protocol Tv (IPTV), and the like. In some embodiments, the display device may not have a broadcast receiving television function.

As shown in fig. 1, a camera may be connected or disposed on the display device 200, and is used for presenting a picture taken by the camera on a display interface of the display device or other display devices, so as to implement an interactive chat between users. Specifically, the picture shot by the camera can be displayed on the display device in a full screen mode, a half screen mode or any optional area.

As a connection mode in some embodiments, the camera is connected with the rear shell of the display device through the connection board, and is fixedly installed in the middle of the upper side of the rear shell of the display device.

As another way of connection in some embodiments, the camera is connected to the rear housing of the display device through a connection board or other conceivable connector, which is capable of being lifted up and down, and the connector is provided with a lifting motor, and when the user wants to use the camera or has an application program to use the camera, the camera is lifted up from the display device, and when the user does not need to use the camera, the camera can be embedded in the rear housing, so that the camera is protected from being damaged and the privacy security of the user is protected.

As an embodiment, the camera adopted in the present application may have 1700 ten thousand pixels, so as to achieve the purpose of ultra high definition display. In actual use, cameras higher or lower than 1700 ten thousand pixels may also be used.

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

Illustratively, a user can conduct a video chat with at least one other user while watching a video program via a display device. In the display device, the presentation of the video program can be used as a background picture, and a window for video chat is displayed on the background picture. The vivid display device can be called as a display device with the function of 'watching while chatting'.

In some embodiments, in the application scenario of "chat while watching", a user conducts at least one video chat across terminals while watching a live video or a network video through a display device.

In another example, a user can engage in a video chat with at least one other user via a display device while entering an educational application for learning. For example, a student may interact remotely with a teacher while learning content in an educational application. The image can be called that the display device has the function of chatting while learning.

In another example, a user may play a card game while conducting a video chat with a player entering the game via a display device. For example, a player may enable remote interaction with other players when entering a gaming application to participate in a game. Figurative, the display device can be said to have a "see while play" function.

In some embodiments, in the display device, a game scene is fused with a video picture, a portrait in the video picture is scratched and displayed in the game picture, and the experience of a user is improved.

In some embodiments, in a motion sensing game (such as a ball playing game, a boxing game, a running game, a dancing game and the like), the posture and the motion of a human body, the detection and the tracking of limbs and the detection of key point data of human skeleton are acquired through a camera, and then the detection and the fusion with a game picture are carried out, so that the game of scenes such as sports, dancing and the like is realized.

In another example, a user may interact with at least one other user via a display device in video and voice while the karaoke application. Vividly, the display device can be called as having the function of 'seeing and singing while watching'.

In some embodiments, in the application scenario of "sing while watching", the user can complete recording of a song with other users through the display device while chatting the scenario.

In another example, a user may turn on a camera locally for pictures and videos via a display device. Figuratively, the display device may be said to have a "mirror" function.

In other examples, the display device may add more or reduce the above functions. The function of the display device is not particularly limited in the present application.

Fig. 2a schematically illustrates a hardware structure of a hardware system in the display device 200 according to an exemplary embodiment. For convenience of illustration, the display device 200 in fig. 2a is illustrated as a liquid crystal display.

As shown in fig. 2a, the display device 200 may include: a first panel 11, a first backlight assembly 12, a first rear case 13, a first controller 14, a second controller 15, a first display driving circuit 16, a second panel 21, a second backlight assembly 22, a second rear case 23, a second display driving circuit 24, and a power supply assembly 30. Additionally, in some embodiments, the display device 200 may further include: a base or a suspension bracket. For convenience of illustration, the display device 200 in fig. 2a is illustrated by including a base 41, and the base 41 is used for supporting the display device 200. It should be noted that the drawings only show one type of base design, and those skilled in the art can design different types of bases according to the product requirements.

The first panel 11 is used for presenting the picture of the first display screen 201 to the user. In some embodiments, the first panel 11 may be a liquid crystal panel. For example, the liquid crystal panel may include, in order from top to bottom: a horizontal polarizing plate, a color filter, a liquid crystal layer, a thin film transistor TFT, a vertical polarizing plate, a light guide plate, and a Printed Circuit Board (PCB), and a driving circuit such as a gate driving circuit and a source driving circuit is disposed on the PCB 17. The grid electrode driving circuit is connected with the grid electrode of the thin film transistor TFT through a scanning line, and the source electrode driving circuit is connected with the drain electrode of the thin film transistor TFT through a data line.

The first backlight assembly 12 is disposed below the first panel 11, and is generally an optical assembly for providing sufficient light source with uniform brightness and distribution, so that the first panel 11 can normally display images. The first backlight assembly 12 further includes a first back plate (not shown).

The first rear case 13 is disposed on the first panel 11 to cover the first backlight assembly 12, the first controller 14, the second controller 15, the first display driving circuit 16, the power supply assembly 30, and other components of the display device 200, thereby providing an aesthetic effect.

Wherein the first controller 14, the second controller 15, the first display driving circuit 16 and the power supply assembly 30 are disposed on the first back plate, and some convex hull structures are typically formed by stamping on the first back plate. The first controller 14, the second controller 15, the first display driving circuit 16, and the power supply module 30 are fixed to the convex hull by screws or hooks. The first controller 14, the second controller 15, the first display driving circuit 16 and the power supply module 30 may be disposed on a single board, or may be disposed on different boards, for example, the first controller 14 is disposed on a main board, the second controller 15 is disposed on an interactive board, the first display driving circuit 16 is disposed on the first display driving board, and the power supply module 30 is disposed on the power supply board, or may be disposed on different boards in combination, or may be disposed on a single board together with the first backlight module 12, and the configuration may be specifically set according to actual requirements, which is not limited in this application. For convenience of illustration, fig. 2a illustrates the first controller 14, the second controller 15, the first display driver circuit 16, and the power supply module 30 on a single board.

The first display driving circuit 16 mainly functions to: the multi-level backlight partition control is performed through the backlight driving signals transmitted by the first controller 14, such as the PWM signal and the localdiming signal, and the control is changed according to the image content, and after the handshake is established between the first controller 14 and the control, the VbyOne display signal transmitted by the first controller 14 is received, and the VbyOne display signal is converted into the LVDS signal, so that the image display of the first display screen 201 is realized.

Wherein the second panel 21 is used for presenting the picture of the second display screen 202 to the user. In some embodiments, the second panel 21 may be a liquid crystal panel, and the specific structure included in the second panel may be as described in the foregoing, which is not described herein again.

The second backlight assembly 22 is disposed below the second panel 12, and is generally an optical assembly for providing sufficient light with uniform brightness and distribution to enable the second panel 12 to normally display images. The second backlight assembly 22 further includes a second back plate (not shown).

The second rear case 23 is disposed on the second panel 21 to jointly hide the components of the display device 200, such as the second backlight assembly 22 and the second display driving circuit 24, thereby achieving an aesthetic effect.

The second display driving circuit 24 is disposed on the second back plate, and some convex hull structures are usually formed on the second back plate by stamping. The second display driving circuit 24 is fixed to the convex bag by a screw or a hook. The second display driving circuit 24 may be separately disposed on a board, such as the second display driving board, or may be disposed on a board together with the second backlight assembly 22, and the second display driving circuit may be disposed specifically according to actual requirements, which is not limited in this application. For convenience of explanation, fig. 2a illustrates the second display driving circuit 24 separately provided on one board.

In some embodiments, fig. 2a further includes a key sheet, where the key sheet may be disposed on the first back plate or the second back plate, which is not limited in this application. And a plurality of keys and key circuits are arranged on the key board, so that the first controller 14 or the second controller 15 can receive key signals from the key board, and the first controller 14 or the second controller 15 can send control signals to the key board.

In addition, the display device 200 further includes a sound reproducing means (not shown in the figure), such as an audio component, e.g., an I2S interface including a power Amplifier (AMP) and a Speaker (Speaker), etc., for realizing reproduction of sound. Usually, the sound components are capable of realizing sound output of at least two sound channels; when the panoramic surround effect is to be achieved, a plurality of acoustic components are required to be arranged to output sounds of a plurality of sound channels, and a detailed description thereof is omitted.

It should be noted that the display device 200 may also be an OLED display, and correspondingly, the template included in the display device 200 is changed accordingly, for example, since the OLED display can achieve self-luminescence, a backlight assembly (the first backlight assembly 12 and the second backlight assembly 22 in fig. 2 a) is not needed in the OLED display, and will not be described herein too much.

Alternatively, a display device with dual display screens is taken as an exemplary illustration as shown in fig. 2a, and a hardware configuration diagram of a hardware system in the display device according to an exemplary embodiment is exemplarily shown in fig. 2 b.

Among them, in the display device having a single display screen as shown in fig. 2b, the display device includes: a panel 1, a backlight assembly 2, a rear case 3, a controller 4, a power supply assembly 5, and a chassis 6. Wherein, the panel 1 is used for presenting pictures for users; the backlight assembly 2 is located below the panel 1, and is generally optical assemblies for providing sufficient brightness and uniformly distributed light sources to enable the panel 1 to normally display image contents, the backlight assembly 2 further includes a back plate 20, the controller 4 and the power supply assembly 5 are disposed on the back plate 20, and are generally stamped on the back plate 20 to form convex hull structures, and the controller 4 and the power supply assembly 5 are fixed on the convex hulls through screws or hooks; the rear shell 3 is covered on the panel 1 to jointly hide the parts of the display equipment such as the backlight component 2, the controller 4, the power supply component 5 and the like, thereby achieving the effect of attractive appearance; and a base 6 for supporting the display device.

The controller 4 and the power supply module 5 may be disposed on a single board, or may be disposed on a single board together with the backlight module, and may be specifically disposed according to actual requirements, which is not limited in this application. For ease of illustration, in fig. 2b, the controller 4 and the power supply assembly 5 are provided together on one board.

Fig. 3 shows a schematic diagram of the connection relationship between the power module and the load IN fig. 2a, and as shown IN fig. 3, the power module 30 includes an input terminal IN connected to an AC power source AC (such as commercial power) and an output terminal OUT (a first output terminal OUT1, a second output terminal OUT2, a third output terminal OUT3, a fourth output terminal OUT4 and a fifth output terminal OUT5 are shown), wherein the output terminal OUT is connected to the load, for example, a first output terminal OUT1 is connected to the sound reproducing apparatus, a second output terminal OUT2 is connected to the first panel 11/the second panel 21, a third output terminal OUT3 is connected to the first backlight module 12/the second backlight module 22, a fourth output terminal OUT4 is connected to the first controller 14/the second controller 15, and a fifth output terminal 5 is connected to the first display driving circuit 16/the second display driving circuit 24. The power supply 30 needs to convert the ac power into dc power required by the load, and the dc power is usually of different specifications, for example, 18V is required for the audio components, 12V/18V is required for the first controller 14, etc.

The power supply control device can adopt a single power supply control structure, a double power supply control structure or a multi-power supply control structure. For convenience of explanation, a dual power control structure is taken as an example to be exemplified on the basis of the embodiment shown in fig. 2a and fig. 4.

Fig. 4 shows a detailed description of one power architecture in the present application. Referring to fig. 2a and 4, the power supply assembly 30 may be mainly composed of a first power supply circuit 31 and a second power supply circuit 32 connected in parallel. The first power circuit 31 and the second power circuit 32 have substantially the same structure, and the operation principle will be described in detail below mainly by taking the first power circuit 31 as an example.

The first power supply circuit 31 may include a first rectifying and smoothing circuit, a first PFC circuit, and a first LLC circuit, which are connected in sequence.

The first rectifying and filtering circuit may specifically include: the rectifier bridge is used for rectifying input alternating current and inputting full-wave signals to a Power Factor Correction (PFC) circuit. Before the AC power is input to the first PFC circuit, an Electromagnetic Interference (EMI) filter may be connected to high-frequency filter the input AC power.

The first PFC circuit generally includes a PFC inductor, a switching power device, and a PFC control chip, and mainly performs power factor correction on an input Alternating Current (AC) power source to output a stable dc bus voltage (e.g., 380V) to the first resonant converter (LLC) circuit. The first PFC circuit can effectively improve the power factor of a power supply and ensure the same phase of voltage and current.

The first LLC circuit may adopt a double-MOS transistor LLC resonant conversion circuit, and may further include a Pulse Frequency Modulation (PFM) circuit, a capacitor, an inductor, and other components. The first LLC circuit may specifically step down or step up the dc bus voltage input by the first PFC circuit, and output a constant voltage to the load. Here, the load may include a load as shown in fig. 3. Typically, the first LLC circuit is capable of outputting a plurality of different voltages to meet the requirements of the load. For example, the first LLC circuit supplies power to the first controller 14, the first LLC circuit supplies power to the first backlight assembly 12, and so on. For another example, the first controller 14 may further control the first LLC circuit to supply power (e.g., a supply voltage with a magnitude of 12V or 18V) to the second controller 15, the first display driving circuit 16, the second display driving circuit 24, the keypad, and the second backlight assembly 22, so as to ensure that each board can operate.

In some embodiments, the first power circuit 31 may further include a first synchronous rectification circuit (not shown), which may include a transformer, a controller, two MOS transistors, and a diode, and is directly capable of outputting a stable target voltage, such as 12V or 18V. It should be noted that the first synchronous rectification circuit may be provided separately, or may be provided in the first LLC circuit.

The first power supply circuit 31 may further include a relay for controlling the supply of power to the second power supply circuit 32.

The second power circuit 32 may include a second rectifying and smoothing circuit, a second PFC circuit, and a second LLC circuit connected in sequence. The alternating current of the second power circuit 32 is derived from the first power circuit 31 or the commercial power, and the second LLC circuit can supply power to the first backlight assembly 12. The description of the remaining respective circuits refers to the description of the first power supply circuit 31. In some embodiments, the second power supply circuit 32 further comprises a second synchronous rectification circuit, wherein the second synchronous rectification circuit may refer to an implementation form of the first synchronous rectification circuit.

It should be noted that the arrows in fig. 4 are used to indicate that the power supply assembly 30 directly or indirectly supplies power to other components in the display device 200 except for the power supply assembly. In addition, the first power supply circuit 31 may output a first backlight instruction signal to the first display driving circuit 16 in addition to realizing power supply. The second power supply circuit 32 may output a second backlight indication signal to the first display driving circuit 16 in addition to supplying power to the implementation.

Wherein the first backlight indication signal is used for indicating to turn on the backlight light source of the first area in the first display screen 201 (i.e. the first panel 11). The second backlight indication signal is used to indicate that the backlight light sources of the second area in the first display screen 201 (i.e. the first panel 11) are turned on. The first area and the second area together constitute a part or all of the area displayable by the first display screen 201.

For ease of description, one hardware system in a dual hardware system architecture will be referred to hereinafter as a first hardware system or a first controller, and the other hardware system will be referred to hereinafter as a second hardware system or a second controller. The first controller comprises various processors and various interfaces of the first controller, and various modules connected with the first controller through the various interfaces, and the second controller comprises various processors and various interfaces of the second controller, and various modules connected with the second controller through the various interfaces. The first controller and the second controller may each have a relatively independent operating system installed therein, and the operating system of the first controller and the operating system of the second controller may communicate with each other through a communication protocol, which is as follows: the frame layer of the operating system of the first controller and the frame layer of the operating system of the second controller can communicate for the transmission of commands and data, so that there are two independent but interrelated subsystems in the display device 200.

The dual hardware system architecture of the present application is further described below with reference to fig. 5. It should be noted that fig. 5 is only an exemplary illustration of the dual hardware system architecture of the present application, and does not represent a limitation of the present application. In actual practice, both hardware systems may contain more or less hardware or interfaces as desired.

A block diagram of the hardware architecture of the display device 200 according to fig. 2a is exemplarily shown in fig. 5. As shown in fig. 5, the hardware system of the display apparatus 200 may include a first controller 210 (i.e., the first controller 14 in fig. 2 a) and a second controller 310 (i.e., the second controller 15 in fig. 2 a), and modules connected to the first controller 210 or the second controller 310 through various interfaces.

In some embodiments, the first controller 210 mainly implements a conventional television function (such as an external set-top box, etc.), and may control the first display screen 280 (i.e., the first display screen 201 in fig. 1) to display corresponding image content. The second controller 310 may be configured to receive the instruction sent by the first controller 210 and control the second display screen 380 (i.e., the second display screen 202 in fig. 1) to display corresponding image content.

The modules connected to the first controller 210 may include a tuning demodulator 220, a communicator 230, an external device interface 250, a memory 290, a user input interface 260-3, a video processor 260-1, an audio processor 260-2, a first display screen 280 (i.e., the first display screen 201 in fig. 2 a), an audio output interface 270, and a power supply module 240. In other embodiments, the first controller 210 may include more or fewer modules connected.

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

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

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

The communicator 230 is a component for communicating with an external device or an external server according to various communication protocol types. For example: the communicator 230 may include a WIFI module 231, a bluetooth communication protocol module 232, a wired ethernet communication protocol module 233, and other network communication protocol modules such as an infrared communication protocol module or a near field communication protocol module (not shown).

The display apparatus 200 may establish a connection of a control signal and a data signal with an external control apparatus or a content providing apparatus through the communicator 230. For example, the communicator may receive a control signal of the remote controller 100 according to the control of the first controller 210.

The external device interface 250 is a component for providing data transmission between the first controller 210 and the second controller 310 or other external devices. The external device interface 250 may be connected with an external apparatus such as a set-top box, a game device, a notebook computer, etc. in a wired/wireless manner, and may receive data such as a video signal (e.g., moving image), an audio signal (e.g., music), additional information (e.g., EPG), etc. of the external apparatus.

The external device interface 250 may include: a High Definition Multimedia Interface (HDMI) terminal is also referred to as HDMI 251, a Composite Video Blanking Sync (CVBS) terminal is also referred to as AV 252, an analog or digital component terminal is also referred to as component 253, a Universal Serial Bus (USB) terminal 254, a Red Green Blue (RGB) terminal (not shown in the figure), and the like. The number and type of external device interfaces are not limited by this application.

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

As shown in fig. 5, the first controller 210 includes a read only memory RAM 213, a random access memory ROM 214, a graphic processor 216, a CPU processor 212, a communication interface 218, and a communication bus. The RAM 213 and the ROM 214, the graphic processor 216, the CPU processor 212, and the communication interface 218 are connected via a bus.

A ROM 213 for storing instructions for various system boots. If the display device 200 is powered on upon receipt of the power-on signal, the CPU processor 212 executes a system boot instruction in the ROM and copies the operating system stored in the memory 290 to the RAM 214 to start running the boot operating system. After the start of the operating system is completed, the CPU processor 212 copies the various application programs in the memory 290 to the RAM 214, and then starts running and starting the various application programs.

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

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

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

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

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

The first controller 210 may control operations of the display apparatus 200 in relation to the second display screen 380. For example: in response to receiving a user command for selecting a UI object to be displayed on the second display screen 380, the first control screen 210 may perform an operation related to the object selected by the user command.

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

The memory 290 includes a memory for storing various software modules for driving and controlling the display apparatus 200. Such as: various software modules stored in memory 290, including: a base module, a detection module, a communication module, a display control module, a browser module, and various service modules, etc. (not shown in the figure).

The basic module is a bottom layer software module for signal communication between hardware in the display device 200 and sending processing and control signals to an upper layer module. The detection module is a management module used for collecting various information from various sensors or user input interfaces, and performing digital-to-analog conversion and analysis management. The voice recognition module comprises a voice analysis module and a voice instruction database module. The display control module is a module for controlling the first display 280 to display image content, and may be used to play information such as multimedia image content and UI interface. The communication module is used for carrying out control and data communication with external equipment. And the browser module is used for executing data communication between the browsing servers. The service module is a module for providing various services and various application programs.

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

A user input interface 260-3 for transmitting an input signal of a user to the first controller 210 or transmitting a signal output from the first controller 210 to the user. For example, the control device (e.g., a mobile terminal or a remote controller) 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 input interface, and then the input signal is forwarded to the first controller 210 through the user input interface 260-3; alternatively, the control device may receive an output signal such as audio, video or data processed by the first controller 210 and output from the user input interface 260-3, and display or output the received output signal in audio or vibration form.

In some embodiments, the user may input a user command on a Graphical User Interface (GUI) displayed on the first display screen 280, and the user input interface 260-3 receives the user input command through the Graphical User Interface (GUI). Alternatively, the user may input a user command by inputting a specific sound or gesture, and the user input interface 260-3 receives the user input command by recognizing the sound or gesture through the sensor.

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

Illustratively, the video processor 260-1 includes a demultiplexing module, a video decoding module, an image synthesizing module, a frame rate conversion module, a display formatting module, and the like (not shown in the figure).

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 video signal after demultiplexing, including decoding, scaling and the like.

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

The frame rate conversion module is configured to convert a frame rate of an input video, such as a frame rate of an input 24Hz, 25Hz, 30Hz, or 60Hz video into a frame rate of 60Hz, 120Hz, or 240Hz, where the input frame rate may be related to a source video stream, and the output frame rate may be related to a refresh rate of a display device. 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 device, such as converting the format of the signal output by the frame rate conversion module to output RGB data signals.

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

And a driving assembly for driving the display according to the type of the first display screen 280. Alternatively, a projection device and a projection screen may be included, provided that the first display screen 280 is a projection display screen.

The audio processor 260-2 is configured to receive an audio signal, and perform decompression and decoding 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 in the speaker 272.

An audio output interface 270 for receiving the audio signal output by the audio processor 260-2 under the control of the first controller 210, wherein the audio output interface may include a speaker 272 or an external sound output terminal 274 for outputting to a generating device of an external device, such as: external sound terminal or earphone output terminal.

In other exemplary embodiments, video processor 260-1 may comprise one or more chip components. The audio processor 260-2 may also include one or more chips.

And, in some other exemplary embodiments, the video processor 260-1 and the audio processor 260-2 may be separate chips or may be integrated in one or more chips together with the first controller 210.

And a power supply module 240 for providing power supply support for the display device 200 by the power input from the external power source under the control of the first controller 210. The power supply module 240 may include a built-in power supply circuit installed inside the display apparatus 200, or may be a power supply installed outside the display apparatus 200, such as a power supply interface for providing an external power supply in the display apparatus 200.

Similar to the first controller 210, as shown in fig. 5, the module connected to the second controller 310 may include a communicator 330, a detector 340, a memory 390, and a second display screen 380 (i.e., the second display screen 202 in fig. 1). A user input interface, a video processor, an audio output interface (not shown) may also be included in some embodiments. In some embodiments, there may also be a power supply module (not shown) that independently powers the second controller 310.

The communicator 330 is a component for communicating with an external device or an external server according to various communication protocol types. For example: the communicator 330 may include a WIFI module 331, a bluetooth communication protocol module 332, a wired ethernet communication protocol module 333, and other network communication protocol modules such as an infrared communication protocol module or a near field communication protocol module (not shown).

The communicator 330 of the second controller 310 and the communicator 230 of the first controller 210 also interact with each other. For example, the WiFi module 231 within the hardware system of the first controller 210 is used to connect to an external network, generate network communication with an external server, and the like. The WiFi module 331 in the hardware system of the second controller 310 is used to connect to the WiFi module 231 of the first controller 210 without making a direct connection with an external network or the like, and the second controller 310 is connected to the external network through the first controller 210. Therefore, for the user, a display device as in the above embodiment displays a WiFi account to the outside.

The detector 340 is a component of the second controller 310 for collecting signals of an external environment or interaction with the outside. The detector 340 may include a light receiver 342, a sensor for collecting the intensity of ambient light, which may be used to adapt to display parameter changes, etc.; the system may further include an image collector 341, such as a camera, a video camera, etc., which may be configured to collect external environment scenes, collect attributes of the user or interact gestures with the user, adaptively change display parameters, and identify user gestures, so as to implement a function of interaction with the user.

An external device interface 350, which provides a component for data transmission between the second controller 310 and the first controller 210 or other external devices. The external device interface may be connected with an external apparatus such as a set-top box, a game device, a notebook computer, etc. in a wired/wireless manner.

A video processor 360 for processing the associated video signal.

The second controller 310 controls the operation of the display device 200 and responds to the operation of the user by running various software control programs stored on the memory 390 (e.g., using installed third party applications, etc.), and interacting with the first controller 210.

As shown in fig. 5, the second controller 310 includes a read only memory ROM 313, a random access memory RAM 314, a graphic processor 316, a CPU processor 312, a communication interface 318, and a communication bus. The ROM 313 and the RAM 314, the graphic processor 316, the CPU processor 312, and the communication interface 318 are connected via a bus.

A ROM 313 for storing instructions for various system boots. CPU processor 312 executes system boot instructions in ROM and copies the operating system stored in memory 390 to RAM 314 to begin running the boot operating system. After the start of the operating system is completed, the CPU processor 312 copies various application programs in the memory 390 to the RAM 314, and then starts running and starting various application programs.

A CPU processor 312 for executing the operating system and application program instructions stored in the memory 390, communicating with the first controller 210, transmitting and interacting signals, data, instructions, etc., and executing various application programs, data and contents according to various interactive instructions receiving external input, so as to finally display and play various audio-video contents.

The communication interface 318 is plural and may include a first interface 318-1 to an nth interface 318-n. These interfaces may be network interfaces connected to external devices via a network, or may be network interfaces connected to the first controller 210 via a network.

The second controller 310 may control operations of the display device 200 in relation to the second display screen 380. For example: in response to receiving a user command for selecting a UI object displayed on the second display screen 380, the second controller 310 may perform an operation related to the object selected by the user command.

The second controller 310 may control operations of the display device 200 in relation to the first display screen 280. For example: in response to receiving a user command for selecting a UI object displayed on the first display 280, the first controller 210 may perform an operation related to the object selected by the user command.

A graphics processor 316 for generating various graphics objects, such as: icons, operation menus, user input instruction display graphics, and the like. The display device comprises an arithmetic unit which carries out operation by receiving various interactive instructions input by a user and displays various objects according to display attributes. And a renderer for generating various objects based on the operator, and displaying the rendered result on the second display screen 380.

The graphics processor 316 of the second controller 310 and the graphics processor 216 of the first controller 210 are both capable of generating various graphics objects. In distinction, if the application 1 is installed in the second controller 310 and the application 2 is installed in the first controller 210, the graphic object is generated by the graphic processor 316 of the second controller 310 when the user performs the instruction input by the user in the application 1 at the interface of the application 1. When a user is at the interface of the application 2 and an instruction input by the user is made within the application 2, a graphic object is generated by the graphic processor 216 of the first controller 210.

Fig. 6 is a diagram schematically illustrating a functional configuration of a display device according to an exemplary embodiment.

As shown in fig. 6, the memory 390 of the second controller 310 and the memory 290 of the first controller 210 are used to store an operating system, an application program, contents, user data, and the like, respectively, and perform system operations for driving the first display screen 280 and the second display screen 380 and various operations in response to a user under the control of the second controller 310 and the second controller 210. The memory 390 of the second controller 310 and the memory 290 of the first controller 210 may include volatile and/or non-volatile memory.

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

The memory 290 is specifically used for storing drivers and related data such as the video processor 260-1 and the audio processor 260-2, the first display 280, the communicator 230, the tuner demodulator 220, the input/output interface, and the like.

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

The memory 290, for example, includes a broadcast receiving module 2901, a channel control module 2902, a volume control module 2903, an image control module 2904, a display control module 2905, a first audio control module 2906, an external instruction recognition module 2907, a communication control module 2908, a light receiving module 2909, a power control module 2910, an operating system 2911, and other applications 2912, a browser module 2913, and so forth. The first controller 210 performs operations such as: the system comprises a broadcast television signal receiving and demodulating function, a television channel selection control function, a volume selection control function, an image control function, a display control function, an audio control function, an external instruction identification function, a communication control function, an optical signal receiving function, an electric power control function, a software control platform supporting various functions, a browser function and other various functions.

The memory 390 includes a memory storing various software modules for driving and controlling the display apparatus 200. Such as: various software modules stored in memory 390, including: a base module, a detection module, a communication module, a display control module, a browser module, and various service modules, etc. (not shown in the figure). Since the functions of the memory 390 and the memory 290 are similar, reference may be made to the memory 290 for relevant points, and thus, detailed description thereof is omitted here.

Illustratively, the memory 390 includes an image control module 3904, a second audio control module 3906, an external instruction recognition module 3907, a communication control module 3908, a light receiving module 3909, an operating system 3911, and other application programs 3912, a browser module 3913, and the like. The first controller 210 performs operations such as: the system comprises an image control function, a display control function, an audio control function, an external instruction identification function, a communication control function, an optical signal receiving function, an electric power control function, a software control platform supporting various functions, a browser function and other various functions.

Differently, the external instruction recognition module 2907 of the first controller 210 and the external instruction recognition module 3907 of the second controller 310 may recognize different instructions.

Illustratively, since the image receiving device such as a camera is connected to the second controller 310, the external instruction recognition module 3907 of the second controller 310 may include the pattern recognition module 2907-1, a pattern database is stored in the pattern recognition module 3907-1, and when the camera receives an external pattern instruction, the camera corresponds to the instruction in the pattern database to perform instruction control on the display device. Since the voice receiving device and the remote controller are connected to the first controller 210, the external command recognition module 2907 of the first controller 210 may include a voice recognition module 2907-2, a voice database is stored in the voice recognition module 2907-2, and when the voice receiving device receives an external voice command or the like, the voice receiving device and the like perform a corresponding relationship with a command in the voice database to perform command control on the display device. Similarly, the control device 100 such as a remote controller is connected to the first controller 210, and the button command recognition module 2907-3 performs command interaction with the control device 100.

Next, a detailed description is given of a specific structure of the display device by way of specific embodiments.

Fig. 7 is a schematic structural diagram of a display device according to an embodiment of the present application. As shown in fig. 7, the display device 001 of the present application may include: a first controller 01 and a display screen 02, wherein the first controller 01 is connected with the display screen 02,

in this application, the display device 001 may be the display device 200 in fig. 1, such as a liquid crystal display, or may be other forms of display devices, which is not limited in this application. The display device 001 may include one display screen or a plurality of display screens, which is not limited in this application. For example, when there are two display screens in the display device 001, the two display screens may be the first display screen 201 and the second display screen 202 in fig. 1.

The display screen 02 may be any display screen used for displaying image content in the display device 001, and the implementation form of the display screen 02 is not limited in the present application. For example, the display screen 02 may be the first display screen 280 in fig. 5, and may be disposed on the aforementioned first display screen 201. The display screen 02 may also be the second display screen 380 in fig. 5, and may be disposed on the aforementioned second display screen 202.

As can be understood by those skilled in the art, when the first signal input to the display screen 02 is unstable, for example, during a power-on process or during a signal source switching process, the display device 001 determines the stability of the first signal to be input to the display screen in order to avoid a screen flashing or screen blooming phenomenon occurring when image content is presented in the display screen 02, and controls the display screen to be turned on after the first signal is stable, and at this time, the screen flashing or screen blooming phenomenon does not occur during an image display process of the display screen based on the stable first signal. Therefore, in the present application, the first controller 01 is adopted to detect the first signal, and when the first signal is unstable, the received first signal is stabilized by executing the corresponding processing procedure, and when it is determined that the first signal does not cause the display screen to be blurred or to be flickered after being input to the display screen 02, the display screen 02 is controlled to be opened, for example, the first controller 01 sends a control instruction to the display screen 02 to control the display screen 02 to be opened, and controls the display screen to present image content based on the first signal, so as to prevent the display screen from being flickered or blurred.

The first signal is a set of signals of video data or audio/video data transmitted by using any video transmission technology, such as a High Definition Multimedia Interface (HDMI) signal, a Digital Visual Interface (DVI) signal, a Low-Voltage Differential Signaling (LVDS) signal, and the like.

Optionally, the first signal may be sent to the display screen 02 by the first controller 01, or may be sent to the display screen 02 by another controller, which is not required in the present embodiment.

In this embodiment, when receiving a power-on command, the first controller 01 first obtains a first signal, for example, the first signal may be obtained from an output port of a controller that outputs the first signal, or from an input port of the display screen 02 that receives the first signal. For example, if the display 02 is connected to a signal transfer device, the first controller 01 may obtain the first signal from an input port of the signal transfer device.

When a plurality of display screens are provided, the power-on instruction may be a power-on instruction sent by the display screen receiving the first signal, in other words, the power-on instruction is used to instruct the display screen receiving the first signal to be turned on. In the process of switching the plurality of display screens, if the display screen receiving the first signal is switched from the first display screen to the second display screen, the power-on instruction is used for indicating the second display screen to be opened.

For example, in order to prevent the display screen 02 from displaying the image content and from displaying a splash screen or a splash screen, before the display screen displays the image content according to the first signal, the first controller 01 needs to detect the stability of the first signal, such as the clock stability of the first signal, whether the phase-locked loop of the first signal is locked, and the stability of the line synchronization signal. For example, the stability of the first signal may be determined according to any one or any combination of clock stability of the first signal, whether a phase-locked loop of the first signal is locked, and stability of the line synchronization signal.

Illustratively, the first controller 01 detects the stability of the line synchronization signal in the first signal to obtain a detection result, for example, detects the stability of the line synchronization signal at a preset time interval, and the detection module of the first controller 01 outputs the detection result of the line synchronization signal corresponding to each time point, where the detection result indicates whether the line synchronization signal is stable at the time point; further, when the detection results of n consecutive times all indicate that the line synchronization signal is stable, the display screen 02 is controlled to be opened, and the display screen 02 is controlled to present the image content according to the first signal.

In order to ensure the stability of the first signal and reduce the false detection rate, n is set to be a positive integer greater than 1. Alternatively, n may be set equal to 3.

In this embodiment of the application, the first controller 01 detects the stability of the horizontal synchronization signal in the first signal when receiving the power-on instruction, and controls the display screen to be opened after the detection result that the horizontal synchronization signal is stable is obtained after n (n is greater than 1) consecutive times of detection, so as to avoid the influence of instability of the first signal on the display effect of the display screen.

In a specific implementation manner, if the detection result indicates that the line synchronization signal is stable, whether the continuous stable frequency of the line synchronization signal reaches n times is determined, when the stable frequency does not reach n times, the step of detecting the stability of the synchronization signal to obtain the detection result is executed again, and the display screen is controlled to be opened until the stable frequency reaches n times.

In order to improve the efficiency of detection, the display screen can be opened and the image content can be presented as soon as possible. When the detection result indicates that the row sync signal is unstable, the first controller 01 needs to determine an unstable state detection result of the row sync signal by determining the number of consecutive instabilities of the row sync signal and perform a corresponding operation according to the unstable state detection result.

Illustratively, if the unstable state detection result indicates that the number of continuous unstable times of the synchronization signal is smaller than the preset value, the stability of the line synchronization signal is continuously detected until the unstable state detection result indicates that the number of continuous unstable times of the line synchronization signal is equal to the preset value, the input port of the display screen 02 is reset, the line synchronization signal instability caused by the abnormal input port of the display screen 02 is eliminated, and the detection accuracy is improved.

After the reset operation is performed on the input port of the display screen 02, the stability of the line synchronization signal in the first signal continues to be detected to obtain a detection result. And ending the detection process until the stable detection result of the line synchronizing signal is obtained by continuous n-time detection, and controlling the display screen 02 to be opened.

On the basis of the above embodiment, the first controller 01 detects whether the clock of the first signal is stable before the reset operation is performed on the input port of the display screen 02; if the clock is stable, resetting the input port of the display screen 02; otherwise, repeatedly detecting whether the clock of the first signal is stable until the clock is stable.

Fig. 8 is a schematic structural diagram of a display device according to another embodiment of the present application. As shown in fig. 8, the display device 001 of the present application may include: the device comprises a first controller 01, a display screen 02, a signal transfer device 03 and a second controller 04.

It should be understood that the first controller 01 and the second controller 04 may be one controller or different controllers, which is not required by the present embodiment. For example, if the display 02 includes the first display 280 and the second display 380 shown in fig. 5, the first controller 01 may be the first controller 210 shown in fig. 5, and the second controller 04 may be the second controller 310 shown in fig. 5.

For example, when the transmission interfaces of the second controller 04 and the display screen 02 are different, for example, the second controller 04 outputs an HDMI signal, and the display screen 02 can only receive LVDS signals, the second controller 04 needs to receive the first signal through the input port of the signal adapter 03 during the process of outputting the first signal to the display screen 02, convert the first signal sent by the second controller into a second signal that can be received by the display screen 02, and send the second signal to the display screen 02 through the output port.

After the first controller 01 receives the power-on instruction, in order to prevent the phenomenon of screen flashing or screen splash when the display screen 02 presents the image content, before the display screen presents the image content, the first controller 01 needs to detect the stability of the first signal, and may directly acquire the first signal for detection, for example, read the first signal from the input port of the signal adapter 03, or control the signal adapter 03 to detect the stability of the first signal. After the first signal is stable, the first controller 01 controls the signal switching device 03 to convert the first signal into a second signal, and controls the display screen 02 to be opened, so that the display screen 02 presents image content according to the second signal.

The first controller 01 is connected to a control port of the signal transfer device 03, the control port is used for the first controller 01 to send a command to the signal transfer device 03, and the signal transfer device 03 is controlled to perform a corresponding operation, for example, the control port may be a bidirectional two-wire synchronous serial bus, such as an (Inter-Integrated Circuit, I2C) bus. For example, the first controller 01 controls the signal transfer device 03 to detect the stability of the first signal by sending a first detection instruction to the signal transfer device 03, and the signal transfer device 03 stores the detection result in the form of a flag bit in a register, for example, if the detection result is that the horizontal synchronization signal is stable, the stability flag of the horizontal synchronization signal is set to 1, and if the detection result is that the horizontal synchronization signal is unstable, the stability flag of the horizontal synchronization signal is set to 0. The first controller 01 reads the detection result from the register of the signal transfer device 03 and performs a corresponding operation according to the detection result.

Illustratively, the first controller 01 controls the signal transfer device 03 to detect the stability of the horizontal synchronization signal in the first signal, and obtain a detection result. For example, the first controller 01 detects the stability of the horizontal synchronization signal at preset time intervals, and the first controller 01 controls the signal switching device 03 to detect the stability of the horizontal synchronization signal at each detection time point, so as to obtain a detection result of whether the uplink synchronization signal at the time point is stable. Optionally, the line synchronization signal may be one of the first signals, or generated according to the first signal. The first controller reads the detection result stored in the signal transfer device 03 through the control port.

Further, when the detection results of n consecutive times all indicate that the line synchronization signal is stable, the control signal switching device 03 converts the first signal into a second signal, and controls the display screen 02 to be opened, so that the display screen 02 presents image content according to the second signal.

When the instability of the line synchronizing signal is detected, the display screen can be opened and the image content can be presented as soon as possible in order to improve the detection efficiency. When the detection result indicates that the row sync signal is unstable, the first controller 01 needs to determine an unstable state detection result of the row sync signal by determining the number of consecutive instabilities of the row sync signal and perform a corresponding operation according to the unstable state detection result.

Illustratively, if the unstable state detection result indicates that the number of consecutive unstable times of the synchronization signal is smaller than the preset value, the stability of the horizontal synchronization signal continues to be detected until the unstable state detection result indicates that the number of consecutive unstable times of the horizontal synchronization signal is equal to the preset value, the input port of the signal switching device 03 is reset, the instability of the horizontal synchronization signal caused by the abnormality of the input port of the signal switching device 03 is eliminated, and the detection accuracy is improved.

After the input port of the signal transfer device 03 is reset, the stability of the line synchronization signal in the first signal continues to be detected to obtain a detection result. And ending the detection process until the stable detection result of the line synchronizing signal is obtained by continuous n-time detection, and controlling the display screen 02 to be opened.

On the basis of the above embodiment, the first controller 01 detects whether the clock of the first signal is stable before the input port of the signal transfer device 03 is reset; if the clock is stable, resetting the input port of the signal switching device 03; otherwise, repeatedly detecting whether the clock of the first signal is stable until the clock is stable. For example, the first controller 01 controls the signal transfer device 03 to detect whether the clock of the first signal is stable, and after receiving the second detection instruction of the first controller 01, the signal transfer device 03 determines whether the clock of the first signal is stable according to the first signal or the clock signal in the first signal.

Illustratively, before detecting the stability of the horizontal synchronization signal in the first signal, the first controller 01 controls the signal transfer device 03 to detect whether the phase-locked loop of the first signal is locked, and after the signal transfer device 03 receives a third detection instruction sent by the first controller 01, it determines whether the phase-locked loop of the first signal is locked according to the first signal or a part of the first signal; if the phase-locked loop is locked, executing a step of detecting the stability of the horizontal synchronization signal in the first signal by the control signal switching device 03 to obtain a detection result; if the phase-locked loop is not locked, detecting whether the clock of the first signal is stable, resetting the input port of the signal switching device 03 when detecting that the clock of the first signal is stable, and detecting whether the phase-locked loop of the first signal is locked again.

In the embodiment of the present application, for the timing when the signal conversion device 03 converts the first signal into the second signal, the following three possible implementation manners are proposed:

in the first mode, when the signal adapter 03 receives the first signal, the first signal is converted into the second signal.

In the second mode, when the detection result indicates that the line synchronization signal is stable for n consecutive times, the first controller 01 controls the signal transfer device 03 to convert the first signal into the second signal before the first controller 01 controls the display screen 02 to be opened. Compared with the first mode, the second mode has less calculation amount and improves the processing efficiency.

In a third mode, on the basis of the second mode, in order to reduce the delay time of displaying an image on the display screen 02, when the number of times of stabilizing the line synchronization signal does not reach n times, the first controller 01 controls the signal transfer device 03 to convert the first signal into the second signal, so that the display screen 02 can receive the second signal that is output by the signal transfer device 03 and is disconnected after being opened. For example, the first controller 01 may control the signal switching device 03 to perform signal switching when the line synchronization signal is detected to be stable for the first time, or may control the signal switching device 03 to perform signal switching when the line synchronization signal is detected to be stable for n-1 times continuously, which is not required in the present embodiment.

On the basis of the embodiments shown in fig. 7 and 8, the stability of the display 02 during the display process is ensured. The first controller 01 detects whether a phase locked loop (RX PLL) of the first signal is locked according to an RX PLL signal of the first signal before detecting stability of a horizontal synchronization signal of the first signal; if the phase-locked loop is locked, detecting the stability of the synchronous signal; if the phase-locked loop is unstable, whether the clock of the first signal is stable is judged, after the clock is stable, the reset operation is performed on the input port of the display screen 02 or the signal switching device 03, and whether the phase-locked loop of the first signal is locked is determined again.

Fig. 9 is a schematic structural diagram of a display device according to another embodiment of the present application. As shown in fig. 9, the display device 001 of the present application includes a first controller 01 for controlling a first display 021 to display; the second controller 04 can switch and select to control the second display screen 022 to display according to the first signal, or control the second display screen 022 to display according to the second signal by receiving the second signal output by the signal switching device 03, or the second controller 04 can switch and select to send the first signal to the first controller 01 and control the first display screen to display by the first controller 01.

Illustratively, the second controller 04 sends the first signal to the second display screen 022 or the signal relay 03 connected to the second display screen 022 by default. In the process of starting up the display device, or in the process that the second controller 04 switches from sending the first signal to the first controller 01 to sending the first signal to the second display screen side, the second display screen 022 may generate a screen flashing or screen blooming phenomenon due to instability of the received first signal.

For example, the first controller 01 determines the stability of the first signal acquired from the signal transfer device 03, and after determining that the first signal is stable, sends a control command to the second display 022 to control the second display 022 to open. The detection process for the first signal stability in the embodiment of the present application is similar to that in the embodiment shown in fig. 8, and is not described here again.

A display control method is proposed below, which is applied to the display device of any of the above embodiments.

Fig. 10 is a flowchart illustrating a display control method according to an embodiment of the present application. As shown in fig. 10, the method includes:

s1: and (5) initializing. Illustratively, the initialization includes power-on reset, initialization of an input port and/or an output port of the information transfer device, audio initialization, and the like.

S2: whether the clock of the first signal is stable is determined, for example, whether the HDMI clock is stable is determined according to the HDMI clock signal. If the clock is stable, go to step S3, otherwise, go to step S2 repeatedly.

S3: and carrying out reset operation on the input port of the signal transfer device.

S4: it is determined whether a phase locked loop of the first signal is locked. If yes, step S5, otherwise, step S2 is executed.

S5: it is determined whether the line synchronization signal in the first signal is stable.

After step S5, if it is determined that the line sync signal in the first signal is not stable, step S11 is executed: and clearing the stable times and adding one to the unstable times.

After step S11, step S12 is performed: it is determined whether the number of instabilities is equal to 3. If yes, go to step S13; otherwise, step S5 is executed.

After step S13, step S14 is performed: and clearing the input port of the signal switching device.

After step S14, step S2 is performed.

After step S5, if it is determined that the line synchronization signal in the first signal is stable, step S6 is performed: the control signal switching device converts the first signal into a second signal.

S7: the number of times of stabilization is increased by one.

S8: it is determined whether the number of stabilizations is equal to 3.

If the number of times of stabilization is equal to 3, go to step S9: clearing the stabilization times; s10 turns on the display screen.

If the number of times of stabilization is not equal to 3, step S5 is executed.

When the display control method in the embodiment of the application is applied to the embodiment of the display device, the structure of the display device is combined, and the method has fewer or more steps than the method, at least the stability of the line synchronization signal in the first signal is detected, and after the stable detection result of the line synchronization signal is obtained through continuous n-time detection, the display screen is controlled to be opened, so that the influence of instability of a low signal on the display effect of the display screen is avoided.

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

Claims

1. A display device, characterized in that the device comprises:

a display screen configured to present image content;

a first controller configured to:

when the detection results of n times of succession indicate that the line synchronizing signal is stable, controlling the display screen to be opened, wherein n is a positive integer greater than 1;

the first controller is configured to:

if the detection result indicates that the horizontal synchronizing signal is unstable, determining whether the continuous unstable times of the horizontal synchronizing signal are equal to a preset value or not to obtain an unstable state detection result;

and if the unstable state detection result indicates that the continuous unstable times of the horizontal synchronization signal are smaller than the preset value, executing the step of detecting the stability of the horizontal synchronization signal in the first signal to obtain a detection result.

2. The apparatus of claim 1,

the first controller is configured to:

3. The apparatus according to claim 1 or 2,

the first controller is configured to:

4. The apparatus according to claim 1 or 2,

the first controller is configured to:

if so, executing the control to open the display screen;

5. The apparatus of claim 1, further comprising: a signal transfer device;

the signal transfer device is configured to:

receiving the first signal;

converting the first signal into a second signal in response to control of the first controller.

6. The apparatus of claim 5,

the first controller is configured to:

and controlling the signal switching device to detect the stability of the horizontal synchronization signal in the first signal to obtain a detection result.

7. The apparatus of claim 6,

the first controller is configured to:

and if the unstable state detection result indicates that the continuous unstable times of the horizontal synchronization signal are smaller than the preset value, the step of controlling the signal switching device to detect the stability of the horizontal synchronization signal in the first signal to obtain a detection result is executed.

8. The apparatus of claim 7,

the first controller is configured to:

9. The apparatus according to any one of claims 6 to 8,

the first controller is configured to:

10. The apparatus according to any one of claims 6 to 8,

the first controller is configured to:

11. The apparatus of any of claims 6 to 8, further comprising a second controller;