CN112073808A

CN112073808A - Color space switching method and display device

Info

Publication number: CN112073808A
Application number: CN201910801536.6A
Authority: CN
Inventors: 李慧娟; 贾其燕; 王之奎
Original assignee: Hisense Visual Technology Co Ltd
Current assignee: Hisense Visual Technology Co Ltd
Priority date: 2019-06-10
Filing date: 2019-08-28
Publication date: 2020-12-11
Anticipated expiration: 2039-08-28
Also published as: CN112073808B

Abstract

The embodiment of the application shows a color space switching method and a display device, wherein the display device comprises a first chip and a second chip, the first chip receives a first video signal and an image quality processing feedback result sent by the second chip, the first chip determines a first conversion format according to the image quality processing feedback result, and the first chip converts the first video signal into a signal of the first conversion format to generate a first output video signal; the second chip processes the first output video signal to generate a second output video signal in an RGB format; and the second chip sends the second output video signal to a display screen. The display device shown in the embodiment of the application adopts the scheme of dynamically adjusting the output format of the first chip, the number of times of space conversion of the video signal is small in the video signal transmission process, and then the precision loss of the video signal in the transmission process is reduced.

Description

Color space switching method and display device

This application claims priority to a chinese patent application filed by the national intellectual property office on 10/6/2019 under application number 201910498720.8. The entire contents of which are incorporated by reference in the present application.

Technical Field

The embodiment of the application relates to a display technology. And more particularly, to a color space switching method and a display device.

Background

Currently, since a display device can provide a user with a play screen such as audio, video, pictures, and the like, it is receiving wide attention from the user. With the development of big data and artificial intelligence, the functional demands of users on display devices are increasing day by day. For example, a user wants to watch a high-definition cable television through a display device, and sometimes the user wants to watch a network television through the display device.

The above needs of the user can be met by the display device, and the applicant has provided a display device in another patent application, wherein the display device comprises two chips, namely a first chip and a second chip. The first chip is used for installing a third-party APP to meet the requirement of a user for watching network televisions and karaoke songs, and the second chip is used for being connected with the set top box to meet the requirement of the user for watching cable televisions. The model delivery process of the network television comprises the following steps: the first chip is used for receiving the video signal and then transmitting the video signal to the second chip through the HDMI, and the second chip performs image quality effect processing on the video signal input by the HDMI channel. Because the image quality effect processing relates to the processing of chrominance and luminance, only YUV signals can be processed, and meanwhile, the display screen requires that input signals are in an RGB format to respectively display red, green and blue pixels. Therefore, before performing image quality processing on the signal, the second chip needs to convert the received signal into a YUV signal, and then convert the YUV signal after the image quality processing into an RGB signal and send the RGB signal to the display screen.

Since the display device in the prior art only includes one main chip for processing the image, how to implement image transmission under the dual-chip architecture provided by the applicant is a problem to be solved.

Disclosure of Invention

In view of the foregoing technical problems, an object of the present application is to provide a color space switching method and a display device.

A first aspect of an embodiment of the present application shows a color space switching method, which is applied to a display device, where the display device includes a first chip, a second chip connected to the first chip, and a display screen connected to the second chip, and the method includes:

the first chip receives a first video signal and an image quality processing feedback result sent by the second chip, wherein the image quality processing feedback result is used for representing whether the second chip carries out image quality processing on the video sent by the first chip or not;

the first chip determines a first conversion format according to the image quality processing feedback result, wherein the first conversion formats corresponding to different image quality processing feedback results are different;

the first chip converts the first video signal into a signal of a first conversion format to generate a first output video signal;

the second chip processes the first output video signal to generate a second output video signal in an RGB format;

and the second chip sends the second output video signal to a display screen.

A second aspect of embodiments of the present application shows a display device including: the display device comprises a first chip, a second chip connected with the first chip and a display screen connected with the second chip;

the first chip is used for receiving a first video signal and an image quality processing feedback result sent by the second chip, wherein the image quality processing feedback result is used for representing whether the second chip carries out image quality processing on the video sent by the first chip;

the first chip is further configured to determine a first conversion format according to the image quality processing feedback result, where the first conversion formats corresponding to different image quality processing feedback results are different;

the first chip is further used for converting the first video signal into a signal in a first conversion format to generate a first output video signal;

the second chip is used for processing the first output video signal and generating a second output video signal in an RGB format;

and the second chip is also used for sending the second output video signal to a display screen.

As can be seen from the foregoing technical solutions, an embodiment of the present application shows a color space switching method and a display device, where the display device includes a first chip, a second chip connected to the first chip, and a display screen connected to the second chip, and the first chip receives a first video signal and an image quality processing feedback result sent by the second chip, where the image quality processing feedback result is used to represent whether the second chip performs image quality processing on a video sent by the first chip; the first chip determines a first conversion format according to the image quality processing feedback result, wherein the first conversion formats corresponding to different image quality processing feedback results are different; the first chip converts the first video signal into a signal of a first conversion format to generate a first output video signal; the second chip processes the first output video signal to generate a second output video signal in an RGB format; and the second chip sends the second output video signal to a display screen. The display device shown in the embodiment of the application adopts a mode of dynamically adjusting the output of the first chip in the video signal transmission process, so that the space conversion times of the video signal are less, and the precision loss of the video signal in the transmission process is further reduced.

Drawings

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

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

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

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

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

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

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

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

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

FIG. 8a is a block diagram of an exemplary display device;

FIG. 8b is a block diagram of an exemplary display device;

FIG. 9 is a flow chart illustrating a method of color space switching in accordance with a preferred embodiment;

FIG. 10a is a signal transfer diagram of a display device according to a preferred embodiment;

FIG. 10b is a signal transfer diagram of a display device according to a preferred embodiment;

FIG. 11a is a signal transfer diagram of a display device according to a preferred embodiment;

FIG. 11b is a signal transfer diagram of a display device according to a preferred embodiment;

FIG. 12 is a block diagram illustrating a display device in accordance with a preferred embodiment; .

Detailed Description

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

The display device 200 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, the display device may be connected or provided with a camera, and is configured to present a picture taken by the camera on a display interface of the display device or other display devices, so as to implement interactive chat between users. Specifically, the picture shot by the camera can be displayed on the display device in a full screen mode, a half screen mode or any optional area.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

The N-chip may include a tuner demodulator 220, a communicator 230, an external device interface 250, a controller 210, a memory 290, a user input interface, a video processor 260-1, an audio processor 260-2, a display 280, an audio output interface 270, and a power supply. The N-chip may also include more or fewer modules in other embodiments.

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

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

In other exemplary embodiments, the 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.

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 controller.

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

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

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

As shown in fig. 4, the controller 210 includes a read only memory RAM213, a random access memory ROM214, a graphics processor 216, a CPU processor 212, a communication interface 218, and a communication bus. The RAM213 and the ROM214, the graphic processor 216, the CPU processor 212, and the communication interface 218 are connected via a bus.

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

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

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

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

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

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

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

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

The basic module is a bottom layer software module 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.

For example: the voice recognition module comprises a voice analysis module and a voice instruction database module. The display control module is a module for controlling the display 280 to display image content, and may be used to play information such as multimedia image content and UI interface. The communication module is used for carrying out control and data communication with external equipment. And the browser module is used for executing data communication between the browsing servers. The service module is a module for providing various services and various 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 for transmitting an input signal of a user to the controller 210 or transmitting a signal output from the controller to the user. For example, the control device (e.g., a mobile terminal or a remote controller) may send an input signal, such as a power switch signal, a channel selection signal, a volume adjustment signal, etc., input by a user to the user input interface, and then the input signal is forwarded to the controller by the user input interface; alternatively, the control device may receive an output signal such as audio, video, or data output from the user input interface via the controller, and display the received output signal or output the received output signal in audio or vibration form.

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

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

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

The demultiplexing module is used for demultiplexing the input audio and video data stream, and if the input MPEG-2 is input, the demultiplexing module demultiplexes the input audio and video data stream into a video signal 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 24Hz, 25Hz, 30Hz, or 60Hz video, into a 60Hz, 120Hz, or 240Hz frame rate, where the input frame rate may be related to a source video stream, and the output frame rate may be related to an update rate of a display. The input is realized in a common format by using a frame insertion mode.

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

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

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

The audio processor 260-2 is configured to receive an audio signal, decompress and decode the audio signal according to a standard codec protocol of the input signal, and perform noise reduction, digital-to-analog conversion, amplification and other audio data 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 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 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 with the controller 210.

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

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

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

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

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

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

A video processor 360 for processing the associated video signal.

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

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

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

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

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

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

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

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

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

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

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

The memory 290 is specifically used for storing drivers and related data of the video processor 260-1 and the audio processor 260-2, the display 280, the communicator 230, the tuning 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, and the like. The controller 210 performs functions such as: the system comprises a broadcast television signal receiving and demodulating function, a television channel selection control function, a volume selection control function, an image control function, a display control function, an audio control function, an external instruction identification function, a communication control function, an optical signal receiving function, an electric power control function, a software control platform supporting various functions, a browser function and other various functions.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

The event identification module 2914-2 is used to input various event definitions for various user input interfaces, identify various events or sub-events, and transmit them to the process for executing one or more sets of their corresponding handlers.

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

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

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

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

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

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

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

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

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

A schematic diagram of a user interface in a display device 200 according to an exemplary embodiment is illustrated in fig. 7. As shown in fig. 7, the user interface includes a plurality of view display areas, illustratively, a first view display area 201 and a play screen 202, wherein the play screen includes a layout of one or more different items. And a selector in the user interface indicating that the item is selected, the position of the selector being movable by user input to change the selection of a different item.

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

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

The display frames of the same hierarchy can also be presented, at this time, the selector can switch between the first view display area and the second view display area, and when the size and the position of the first view display area are changed, the size and the position of the second view display area can be changed along with the change.

Since the first chip and the second chip may have independent operating systems installed therein, there are two independent but interrelated subsystems in the display device 200. For example, Android (Android) and various APPs can be independently installed on the first chip and the N, so that each chip can realize a certain function, and the first chip and the second chip cooperatively realize a certain function.

The display device is internally provided with two chips, namely a first chip and a second chip, wherein the first chip is used for receiving video signals and then transmitting the video signals to the second chip through an HDMI, and the second chip is used for carrying out image quality effect processing on the video signals input by the HDMI channel. Since the image quality effect processing involves processing of chrominance and luminance, only signals in YUV format can be processed. Therefore, before performing image quality processing on the signal, the second chip needs to convert the received signal into a signal in a YUV format, and then convert the signal in the YUV format after the image quality processing into an RGB signal to be sent to the display screen.

In the related scheme, the type of the output signal of the chip is fixed, however, in the related art, the display device (television) does not perform image quality processing on the image sent by the set top box, the requirement of the screen is not met, and the RGB format is fixed to output. In the process of transmitting the video signal, multiple conversions of YUV signal RGB signals are involved, and each conversion process of the YUV format signal and the RGB format signal has a certain progress loss.

Specifically, fig. 8a and 8b are schematic signal transmission diagrams of an exemplary display device; as can be seen from fig. 8a, the video signal that can be received by the first chip may be a video signal in RGB format or a video signal in YUV format, and the output video signal of the first chip is a video signal in RGB format. As can be seen from fig. 8b, the video signal that can be received by the first chip may be a video signal in RGB format or a video signal in YUV format, and the output video signal of the first chip is a video signal in YUV format. In the above-mentioned video signal transfer process, multiple conversions of YUV signal RGB signals are involved, and the following description will be made in detail with reference to specific comparative examples, in which a display device shown by the fixed output technique is provided with multiple conversions of YUV signal RGB signals during video transmission. Comparative example 1 a:

when the video signal received by the first chip is a video signal in RGB format, the display device shown in fig. 8a is adopted, and the first chip directly sends the received video signal in RGB format to the second chip. In some cases, the second chip needs to perform image quality processing on the video signal, and in order to ensure that the video signal needing image quality processing can realize image quality processing, the second chip converts the received video signal in the RGB format into the video signal in the YUV format, then performs image quality processing on the video signal in the YUV format, and finally converts the video signal after image quality processing into the video signal in the RGB format and sends the video signal to the display screen.

In the process of transmitting the video signal, the video signal sequentially undergoes: RGB/YUV and YUV/RGB, 2 conversions, each of which inevitably results in some loss of image detail.

Comparative example 1 b:

when the video signal received by the first chip is in YUV format, the display device shown in fig. 8a is adopted, the first chip directly converts the received video signal in YUV format into a video signal in RGB format, and sends the video in RGB format to the second chip. In some cases, the second chip needs to perform image quality processing on the video signal, and in order to ensure that the video signal needing image quality processing can realize image quality processing, the second chip directly converts the received RGB video signal into a video signal in a YUV format, then performs image quality processing on the video signal in the YUV format, and finally converts the video signal after image quality processing into a video signal in an RGB format and sends the video signal to the display screen.

In the process of transmitting the video signal, the video signal sequentially undergoes: YUV/RGB,/RGB/YUV, YUV/RGB, 3 conversions, each conversion inevitably results in some loss of image detail.

For example, as can be seen from fig. 8b, the video signal that can be received by the first chip may be in RGB format or YUV format, and the output video signal of the first chip is a video in YUV format.

Comparative example 2 a:

when the video signal received by the first chip is in YUV format, the first chip directly sends the received video signal in YUV format to the second chip by using the display apparatus shown in fig. 8 b. The second chip receives the video signals in the YUV format, performs corresponding image quality processing on the video signals in the YUV format according to requirements, converts the video signals after the image quality processing into video signals in the RGB format and sends the video signals to the display screen.

In the process of transmitting the video signal, the video signal is subjected to YUV/RGB in sequence, and 1 conversion is performed, and some loss of image details is inevitably caused in the conversion process.

Comparative example 2 b:

when the video signal received by the first chip is in RGB format, the display device shown in fig. 8b is used, and the first chip directly converts the received video signal in RGB format into a video signal in YUV format, and sends the video in YUV format to the second chip. The second chip receives the video signals in the YUV format, performs corresponding image quality processing on the video signals in the YUV format according to requirements, converts the video signals after the image quality processing into video signals in the RGB format and sends the video signals to the display screen.

In the process of transferring the video signal, the video signal undergoes RGB/YUV and YUV/RGB in sequence, 2 times of conversion, and each conversion inevitably causes some loss of image details.

In the technical scheme shown in the comparative example, the type of the output video signal of each chip is equivalent to solidification, multiple conversions of YUV signal RGB signals are involved in the process of video signal transmission, a certain progress loss exists in each conversion process of the YUV signal and the RGB signal, and how to improve the precision loss of the video signal in the transmission process becomes an urgent problem to be solved.

In order to solve the above technical problem, a first aspect of the embodiments of the present application shows a color space switching method, where the color space switching method is applied to a display device, where the display device includes a first chip, a second chip connected to the first chip, and a display screen connected to the second chip, and please refer to fig. 9, the method includes:

s101, the first chip receives a first video signal and an image quality processing feedback result sent by the second chip, wherein the image quality processing feedback result is used for representing whether the second chip carries out image quality processing on a video sent by the first chip or not;

the first video includes: and the network video resource or the external equipment stores the video resource transmitted through the USB interface. The first chip supports the installation of third-party live broadcast software and video software, and various required television application software can be downloaded through a television application market (sofa manager, Dangbei market and Qi-P market). Common free tv applications are: TV, HDP live broadcast, Banaba live broadcast, Galaxy kiwi, cloud audio-visual laser, mango TV, magic video, TV live broadcast and starfire newTV live broadcast video application software. Meanwhile, the first chip supports output of a 1080P high-definition video signal or output of a 4K video signal. The first chip also supports wired network and wireless Wi-Fi access. The first chip supports the local video playing capability, and high-definition videos of almost all formats in the market can be played through OTG line connection, a U disk or a mobile hard disk.

In addition, the first chip is further configured to receive an image quality processing feedback result sent by the second chip, where the image quality processing feedback result includes: the second chip will subsequently perform image quality processing on the video signal and the second chip will subsequently not perform image quality processing on the video signal.

S102, the first chip determines a first conversion format according to the image quality processing feedback result, wherein the first conversion formats corresponding to different image quality processing feedback results are different;

specifically, if the image quality processing feedback result is image quality processing, the first conversion format is a YUV signal format; and if the image quality processing feedback result indicates that image quality processing is not performed, the first conversion format is an RGB signal format.

The second chip may need to perform image quality processing on the received video signal in some embodiments, and may not need to perform image quality processing on the received video signal in some embodiments. In the application scenario of image quality processing, since image quality effect processing involves processing of chrominance and luminance, only YUV signals can be processed. Therefore, in the case where image quality processing is required for the video signal, the first conversion format is a YUV signal format. For an application scene without image quality processing, the second chip finally transmits the video signal in the RGB format to the display screen, so as to realize transparent transmission of the video signal. Therefore, in an application scenario where image quality processing is not required, the corresponding first conversion format is a YUV signal format.

The following description deals with an application scenario of image quality processing and an application scenario of non-image quality processing.

After the display device is started, the display interface generally defaults to display a homepage, no video signal is played at the moment, the second chip can not perform image quality processing on the input video signal, and therefore after the display device is started, the first chip defaults to output the video signal in the RGB format. And if the video signal starts to play, performing the next judgment according to the current image mode. If the second chip does not perform image quality processing in the game mode, the first chip keeps outputting the video signals in the RGB format. However, if the second chip needs to perform image quality processing on the signal in the non-game mode, that is, the result of the image quality processing feedback is to perform image quality processing, the first chip is switched to the YUV format video signal for output.

S103, converting the first video signal into a signal of a first conversion format by the first chip to generate a first output video signal;

specifically, the method comprises the following steps: if the image quality processing feedback result received by the first chip is image quality processing, the first conversion format is a YUV signal format; the first chip judges whether the signal format of the received first video signal received by the first chip is a YUV signal format; if the signal format of the first video signal received by the first chip is the YUV signal format, determining that the first video signal received by the first chip is a first output video signal; sending the first output video signal to a second chip; if the signal format of the first video signal received by the first chip is the RGB signal format, the first chip converts the received first video signal into a YUV format signal, generates a first output video signal, and sends the first output video signal to the second chip.

If the image quality processing feedback result received by the first chip is that image quality processing is not performed, the first conversion format is an RGB signal format; the first chip judges whether the signal format of the received first video signal received by the first chip is an RGB signal format; if the signal format of the first video signal received by the first chip is the RGB signal format, determining that the first video signal received by the first chip is a first output video signal; sending the first output video signal to a second chip; if the signal format of the first video signal received by the first chip is the TUV signal format, the first chip converts the received first video signal into a signal in the RGB format, generates a first output video signal, and sends the first output video signal to the second chip.

S104, the second chip processes the first output video signal to generate a second output video signal in an RGB format;

if the image quality processing feedback result is image quality processing, the corresponding first output video signal is a video signal in a YUV format; the second chip carries out image quality processing on the first output video signal to generate a processed first output video signal; and the second chip converts the processed first output video signal into a signal in an RGB format, generates a second output video signal and outputs the second output video signal.

And if the image quality processing feedback result indicates that dynamic compensation processing is not performed, the corresponding first output video signal is a video signal in an RGB format, and the second chip determines that the first output video signal is a second output video signal and outputs the second output video signal.

S105, the second chip sends the second output video signal to a display screen.

The corresponding first output video signal is a YUV format video signal

Compared with the transmission mode of the chip fixed output signal type shown by the fixed output technology, the display device shown in the embodiment of the application has the advantages that the space conversion times of the video signals in the video signal transmission process are obviously reduced, and further the precision loss of the video signals in the transmission process is reduced.

The following describes the method shown in the embodiments of the present application in detail, with reference to specific embodiments, under the same conditions, the number of spatial conversions of the video signal is significantly reduced. .

FIGS. 10a and 10b are schematic diagrams illustrating signal transmission of a display device according to a preferred embodiment;

example 1-1:

in a possible embodiment, the feedback result of the image quality processing received by the first chip is to perform image quality processing; the first video signal received by the first chip is a video signal in an RGB format.

For a specific video signal conversion process, see fig. 10 a:

when the video signal received by the first chip is in an RGB format, the display device shown in the embodiment of the present application is adopted, the first chip receives the image quality processing feedback result fed back by the second chip to perform image quality processing, and the corresponding first conversion format is a YUV signal format. The first chip determines that the received first video signal received by the first chip is a video signal in an RGB format. The first chip directly converts the received video signal into a YUV format video signal, and then sends the YUV format video signal to the second chip. The second chip receives the video signals in the YUV format, performs corresponding image quality processing on the video signals in the YUV format according to requirements, converts the video signals after the image quality processing into video signals in the RGB format and sends the video signals to the display screen.

In the process of transmitting the video signal, the video signal undergoes RGB/YUV and YUV/RGB in sequence, and 2 times of conversion.

The present embodiment shows the same number of spatial conversions of video signals during the transmission of video signals as compared with comparative examples 1a and 2 a.

Examples 1 to 2:

in a possible embodiment, the feedback result of the image quality processing received by the first chip is to perform image quality processing; meanwhile, the first video signal received by the first chip is a video signal in YUV format:

for a specific video signal conversion process, see fig. 10 b:

when the video signal received by the first chip is in YUV format, the display device shown in the embodiment of the application is adopted, the first chip receives the image quality processing feedback result fed back by the second chip to perform image quality processing, and correspondingly, the first conversion format is in YUV signal format. The first chip determines that the received first video signal received by the first chip is a YUV format video signal, and the first chip directly sends the received YUV format video signal to the second chip. The second chip receives the video signals in the YUV format, performs corresponding image quality processing on the video signals in the YUV format according to requirements, converts the video signals after the image quality processing into video signals in the RGB format and sends the video signals to the display screen.

In the process of transmitting the video signal, the video signal is subjected to YUV/RGB in sequence and 1 conversion.

Compared with comparative examples 1b and 2b, the technical scheme shown in the embodiment has the advantages that the number of times of spatial conversion of the video signal in the video signal transmission process is obviously reduced, and further, the precision loss of the video in the transmission process is reduced.

For application scenes such as games, the requirement on the definition of the picture is not high, and the fluency of the picture is mainly pursued by users. The corresponding image quality processing feedback result fed back by the second chip is that image quality processing is not performed, and the corresponding first conversion format is an RGB signal type.

Please refer to fig. 11a and 11b for a specific signaling process.

Example 2-1:

in one possible embodiment, the result of the feedback of the image quality processing received by the first chip is that no image quality processing is performed, and the first video signal received by the first chip is a video signal in RGB format. For a specific video signal conversion process, see fig. 11 a:

when the video signal received by the first chip is in the RGB format, the display device shown in the embodiment of the present application is adopted, and the first conversion format is the RGB signal format if the result of the image quality processing feedback received by the first chip from the second chip is that the image quality processing is not performed. The first chip determines that the received first video signal received by the first chip is a video signal in an RGB format, and the first chip directly sends the received video signal in the RGB format to the second chip. The second chip directly sends the video signals in the received RGB format to the display screen.

In the above-described video signal transfer process, the video signal undergoes 0 transitions in sequence.

Compared with comparative examples 1a and 2a, the technical scheme shown in the embodiment has the advantages that the number of times of spatial conversion of the video signal in the video signal transmission process is obviously reduced, and further, the precision loss of the video in the transmission process is reduced.

Example 2-2:

in a possible embodiment, the image quality processing feedback result received by the first chip is that no image quality processing is performed, and the first video signal received by the first chip is a video signal in YUV format. For a specific video signal conversion process, see fig. 11 b: when the video signal received by the first chip is in YUV format, the display device shown in the embodiment of the application is adopted, the first chip receives the result of image quality processing feedback fed back by the second chip, and the result is that image quality processing is not performed, and correspondingly, the first conversion format is in RGB signal format. The first chip determines that the received first video signal received by the first chip is a YUV format video signal, converts the received YUV format video signal into an RGB format video signal, and then sends the RGB format video signal to the second chip. The second chip directly sends the video signals in the received RGB format to the display screen.

In the process of transmitting the video signal, the video signal undergoes YUV/RGU in sequence and 1 conversion.

A second aspect of the embodiments of the present application shows a display device, please refer to fig. 12, the display device includes: the display device comprises a first chip, a second chip connected with the first chip and a display screen connected with the second chip;

Optionally, if the image quality processing feedback result is image quality processing, the first conversion format is a YUV signal format:

the first chip responds to that the signal format of the first video signal is a YUV signal format, and then the first chip determines that the first video signal is a first output video signal;

or, the first chip responds that the signal format of the first video signal is the RGB signal format, and the first chip converts the first video signal into a YUV format signal to generate a first output video signal.

The optional second chip is further configured to perform image quality processing on the first output video signal to generate a processed first output video signal;

the second chip is further configured to convert the processed first output video signal into a signal in an RGB format, and generate a second output video signal.

Optionally, if the result of the image quality processing feedback is that image quality processing is not performed, the first conversion format is an RGB signal format;

the first chip responds to that the signal format of the first video signal is an RGB signal format, and is also used for determining that the first video signal is a first output video signal;

or, the first chip responds that the signal format of the first video signal is YUV signal format, and is further configured to convert the first video signal into a signal in RGB format, and generate a first output video signal.

Optionally, the second chip is further configured to determine that the first output video signal is a second output video signal and output the second output video signal.

As can be seen from the foregoing technical solutions, an embodiment of the present application shows a color space switching method and a display device, where the display device includes a first chip, a second chip connected to the first chip, and a display screen connected to the second chip, and the first chip receives a first video signal and an image quality processing feedback result sent by the second chip, where the image quality processing feedback result is used to represent whether the second chip performs image quality processing on a video sent by the first chip; the first chip determines a first conversion format according to the image quality processing feedback result, wherein the first conversion formats corresponding to different image quality processing feedback results are different; the first chip converts the first video signal into a signal of a first conversion format to generate a first output video signal; the second chip processes the first output video signal to generate a second output video signal in an RGB format; and the second chip sends the second output video signal to a display screen. Compared with the transmission mode of the chip fixed output signal type shown by the fixed output technology, the display device shown in the embodiment of the application has the advantages that the space conversion times of the video signals in the video signal transmission process are obviously reduced, and further the precision loss of the video signals in the transmission process is reduced.

Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.

It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.

Claims

1. A color space switching method is applied to a display device, the display device comprises a first chip, a second chip connected with the first chip and a display screen connected with the second chip, and the method is characterized by comprising the following steps:

and the second chip sends the second output video signal to a display screen.

2. The method of claim 1, wherein the second chip sends a result of the image quality processing feedback to the first chip in response to the display device being in the game mode;

the second chip responds that the display device is in the non-game mode, and sends an image quality processing feedback result without image quality processing to the first chip.

3. The method according to claim 1, wherein if the result of the image quality processing feedback is image quality processing, the first conversion format is YUV signal format, the first chip converts the first video signal into a signal of the first conversion format, and the step of generating the first output video signal comprises:

the first chip determines that the first video signal is a first output video signal in response to the fact that the signal format of the first video signal is the YUV signal format;

or, the first chip converts the first video signal into a signal in a YUV format to generate a first output video signal in response to that the signal format of the first video signal is an RGB signal format.

4. The method of claim 3, wherein the step of the second chip processing the first output video signal to generate the second output video signal in RGB format comprises:

the second chip carries out image quality processing on the first output video signal to generate a processed first output video signal;

and the second chip converts the processed first output video signal into a signal in an RGB format to generate a second output video signal.

5. The method of claim 1, wherein if the result of the image quality processing feedback is that no image quality processing is performed, the first conversion format is an RGB signal format, and the step of converting the first video signal into a signal of the first conversion format by the first chip to generate the first output video signal comprises:

the first chip determines that the first video signal is a first output video signal in response to the signal format of the first video signal being an RGB signal format;

or, the first chip converts the first video signal into a signal in an RGB format in response to that the signal format of the first video signal is a YUV signal format, and generates a first output video signal.

6. The method according to claim 5, wherein the second chip processes the first output video signal to generate the second output video signal in RGB format by:

the second chip determines the first output video signal as a second output video signal and outputs the second output video signal.

7. A display device, comprising: the display device comprises a first chip, a second chip connected with the first chip and a display screen connected with the second chip;

8. The display apparatus according to claim 6, wherein if the image quality processing feedback result is image quality processing, the first conversion format is a YUV signal format:

9. The display device according to claim 7, wherein the second chip is further configured to perform image quality processing on the first output video signal to generate a processed first output video signal;

10. The display apparatus according to claim 6, wherein if the result of the image quality processing feedback is that image quality processing is not performed, the first conversion format is an RGB signal format;