WO2020258711A1 - 背光控制方法、装置及显示设备 - Google Patents

背光控制方法、装置及显示设备 Download PDF

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Publication number
WO2020258711A1
WO2020258711A1 PCT/CN2019/121388 CN2019121388W WO2020258711A1 WO 2020258711 A1 WO2020258711 A1 WO 2020258711A1 CN 2019121388 W CN2019121388 W CN 2019121388W WO 2020258711 A1 WO2020258711 A1 WO 2020258711A1
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WO
WIPO (PCT)
Prior art keywords
backlight
controller
control information
display device
backlight control
Prior art date
Application number
PCT/CN2019/121388
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English (en)
French (fr)
Inventor
纪开虎
王彬
Original Assignee
海信视像科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 海信视像科技股份有限公司 filed Critical 海信视像科技股份有限公司
Priority to US16/887,594 priority Critical patent/US11107423B2/en
Publication of WO2020258711A1 publication Critical patent/WO2020258711A1/zh

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3406—Control of illumination source
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/63—Generation or supply of power specially adapted for television receivers
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness

Definitions

  • This application relates to the technical field of display device screen backlight control, and in particular to a display device screen backlight control method, device and display device.
  • a feasible solution is to remove the Micro-Controller Unit (MCU) used to control the backlight of the display device screen in the display device, and realize the backlight of the display device screen through software.
  • the control function thereby saving the production cost of display equipment.
  • the embodiments of the present application provide a method, device and display device for controlling the screen backlight of a display device.
  • a method for controlling screen backlight of a display device including:
  • the main controller In response to the display device being awakened, the main controller generates backlight control information and buffers the backlight control information;
  • the main controller activates the backlight controller, so that the backlight controller is initialized
  • the main controller In response to the completion of the initialization of the backlight controller, the main controller outputs the backlight control information to the backlight controller, so that the backlight controller controls the screen backlight of the display device according to the backlight control information.
  • a screen backlight control device of a display device including:
  • the backlight control information generating module is configured to generate backlight control information and buffer the backlight control information in response to the display device being awakened;
  • the backlight controller control module is configured to activate the backlight controller in response to turning on the backlight, so that the backlight controller is initialized;
  • the backlight control information output module is configured to output the backlight control information to the backlight controller in response to the completion of the initialization of the backlight controller, so that the backlight controller performs screen backlighting of the display device according to the backlight control information control.
  • a display device including:
  • Backlight source used to provide backlight for the screen
  • the main controller is used to execute:
  • Backlight controller used to perform:
  • initialization is performed; and in response to the backlight control information output by the main controller, the backlight light source is controlled.
  • FIG. 1A exemplarily shows a schematic diagram of an operation scene between a display device and a control device
  • FIG. 1B exemplarily shows a configuration block diagram of the control device 100 in FIG. 1A;
  • FIG. 1C exemplarily shows a configuration block diagram of the display device 200 in FIG. 1A;
  • FIG. 1D exemplarily shows a block diagram of the architecture configuration of the operating system in the memory of the display device 200
  • Figure 2 is a schematic diagram of backlight control provided with a backlight control MCU
  • Figure 3 is a schematic diagram of backlight control with the backlight control MCU removed;
  • FIG. 4 is a schematic diagram of a backlight control process provided by an embodiment of the application.
  • 5 is a schematic diagram of a buffer queue of backlight control information in an embodiment of the application.
  • FIG. 6 is a schematic diagram of a processing flow of a main controller provided by an embodiment of the application.
  • FIG. 7 is a schematic flow chart of PWM smoothing processing provided by an embodiment of the application.
  • FIG. 8 is a schematic diagram of the connection between the main controller and the backlight controller provided by an embodiment of the application.
  • FIG. 9 is a schematic diagram of a backlight control flow in an embodiment of the application.
  • FIG. 10 is a schematic structural diagram of a screen backlight control device provided by an embodiment of the application.
  • FIG. 1A exemplarily shows a schematic diagram of an operation scene between a display device and a control device.
  • the control device 100 and the display device 200 can communicate in a wired or wireless manner.
  • control device 100 is configured to control the display device 200, which can receive operation instructions input by the user, and convert the operation instructions into instructions that the display device 200 can recognize and respond to, and act as an intermediary for the interaction between the user and the display device 200 effect.
  • the user operates the channel addition and subtraction keys on the control device 100, and the display device 200 responds to the channel addition and subtraction operations.
  • the control device 100 may be a remote controller 100A, including infrared protocol communication or Bluetooth protocol communication, and other short-distance communication methods, etc., to control the display device 200 through wireless or other wired methods.
  • the user can control the display device 200 by inputting user instructions through keys on the remote control, voice input, control panel input, etc.
  • the user can control the display device 200 by inputting corresponding control commands through the volume plus and minus keys, channel control keys, up/down/left/right movement keys, voice input keys, menu keys, and switch buttons on the remote control. Function.
  • the control device 100 may also be a smart device, such as a mobile terminal 100B, a tablet computer, a computer, a notebook computer, etc.
  • a smart device such as a mobile terminal 100B, a tablet computer, a computer, a notebook computer, etc.
  • an application program running on a smart device is used to control the display device 200.
  • the application can be configured to provide users with various controls through an intuitive user interface (UI) on the screen associated with the smart device.
  • UI intuitive user interface
  • the mobile terminal 100B may install a software application with the display device 200, realize connection communication through a network communication protocol, and realize the purpose of one-to-one control operation and data communication.
  • the mobile terminal 100B can establish a control instruction protocol with the display device 200, and by operating various function keys or virtual buttons of the user interface provided on the mobile terminal 100B, the functions of the physical keys arranged like the remote control 100A can be realized.
  • the audio and video content displayed on the mobile terminal 100B can also be transmitted to the display device 200 to realize the synchronous display function.
  • the display device 200 may provide a broadcast receiving function and a network TV function of a computer support function.
  • the display device can be implemented as digital TV, Internet TV, Internet Protocol TV (IPTV), etc.
  • the display device 200 may be a liquid crystal display, an organic light emitting display, or a projection device.
  • the specific display device type, size and resolution are not limited.
  • the display device 200 also performs data communication with the server 300 through multiple communication methods.
  • the display device 200 may be allowed to communicate through a local area network (LAN), a wireless local area network (WLAN), and other networks.
  • the server 300 may provide various contents and interactions to the display device 200.
  • the display device 200 can send and receive information, such as receiving electronic program guide (EPG) data, receiving software program updates, or accessing a remotely stored digital media library.
  • EPG electronic program guide
  • the server 300 can be one group or multiple groups, and can be one type or multiple types of servers.
  • the server 300 provides other network service content such as video on demand and advertising services.
  • FIG. 1B exemplarily shows a configuration block diagram of the control device 100.
  • the control device 100 includes a controller 110, a memory 120, a communicator 130, a user input interface 140, an output interface 150, and a power supply 160.
  • the controller 110 includes a random access memory (RAM) 111, a read only memory (ROM) 112, a processor 113, a communication interface, and a communication bus.
  • RAM random access memory
  • ROM read only memory
  • the controller 110 is used to control the operation and operation of the control device 100, as well as the communication cooperation between internal components, and external and internal data processing functions.
  • the controller 110 may control to generate a signal corresponding to the detected interaction, and This signal is sent to the display device 200.
  • the memory 120 is used to store various operating programs, data and applications for driving and controlling the control device 100 under the control of the controller 110.
  • the memory 120 can store various control signal instructions input by the user.
  • the communicator 130 realizes communication of control signals and data signals with the display device 200 under the control of the controller 110.
  • the control device 100 sends a control signal (such as a touch signal or a button signal) to the display device 200 via the communicator 130, and the control device 100 can receive the signal sent by the display device 200 via the communicator 130.
  • the communicator 130 may include an infrared signal interface 131 and a radio frequency signal interface 132.
  • the user input instruction needs to be converted into an infrared control signal according to the infrared control protocol, and sent to the display device 200 via the infrared sending module.
  • a radio frequency signal interface a user input instruction needs to be converted into a digital signal, which is then modulated according to the radio frequency control signal modulation protocol, and then sent to the display device 200 by the radio frequency transmitting terminal.
  • the user input interface 140 may include at least one of a microphone 141, a touch panel 142, a sensor 143, a button 144, etc., so that the user can input user instructions for controlling the display device 200 to the control device through voice, touch, gesture, pressing, etc. 100.
  • the output interface 150 outputs a user instruction received by the user input interface 140 to the display device 200, or outputs an image or voice signal received by the display device 200.
  • the output interface 150 may include an LED interface 151, a vibration interface 152 that generates vibration, a sound output interface 153 that outputs a sound, a display 154 that outputs an image, and the like.
  • the remote controller 100A can receive output signals such as audio, video, or data from the output interface 150, and display the output signals as images on the display 154, as audio on the sound output interface 153, or as vibration on the vibration interface 152. form.
  • the power supply 160 is used to provide operating power support for each element of the control device 100 under the control of the controller 110.
  • the form can be battery and related control circuit.
  • FIG. 1C exemplarily shows a block diagram of the hardware configuration of the display device 200.
  • the display device 200 may include a tuner and demodulator 210, a communicator 220, a detector 230, an external device interface 240, a controller 250, a memory 260, a user interface 265, a video processor 270, a display 275, Audio processor 280, audio output interface 285, and power supply 290.
  • the tuner and demodulator 210 which receives broadcast television signals through wired or wireless means, can perform modulation and demodulation processing such as amplification, mixing and resonance, and is used to demodulate the television selected by the user from multiple wireless or cable broadcast television signals Audio and video signals carried in the frequency of the channel, and additional information (such as EPG data).
  • modulation and demodulation processing such as amplification, mixing and resonance
  • the tuner and demodulator 210 can be selected by the user and controlled by the controller 250 to respond to the frequency of the television channel selected by the user and the television signal carried by the frequency.
  • the tuner and demodulator 210 can receive signals in many ways according to different broadcasting formats of TV signals, such as terrestrial broadcasting, cable broadcasting, satellite broadcasting or Internet broadcasting; and according to different modulation types, it can be digital modulation or analog Modulation method; and according to different types of received TV signals, analog signals and digital signals can be demodulated.
  • different broadcasting formats of TV signals such as terrestrial broadcasting, cable broadcasting, satellite broadcasting or Internet broadcasting
  • modulation types it can be digital modulation or analog Modulation method
  • received TV signals, analog signals and digital signals can be demodulated.
  • the tuner demodulator 210 may also be in an external device, such as an external set-top box.
  • the set-top box outputs a television signal after modulation and demodulation, and inputs it to the display device 200 through the external device interface 240.
  • the communicator 220 is a component used to communicate with external devices or external servers according to various communication protocol types.
  • the display device 200 may transmit content data to an external device connected via the communicator 220, or browse and download content data from an external device connected via the communicator 220.
  • the communicator 220 may include a network communication protocol module such as a WIFI module 221, a Bluetooth communication protocol module 222, and a wired Ethernet communication protocol module 223 or a near field communication protocol module, so that the communicator 220 can receive the control device 100 according to the control of the controller 250 Control signals, and implement the control signals as WIFI signals, Bluetooth signals, radio frequency signals, etc.
  • the detector 230 is a component of the display device 200 for collecting signals from the external environment or interacting with the outside.
  • the detector 230 may include a sound collector 231, such as a microphone, which may be used to receive a user's voice, such as a voice signal of a control instruction for the user to control the display device 200; or, may collect environmental sounds used to identify the type of environmental scene to achieve display
  • the device 200 can adapt to environmental noise.
  • the detector 230 may also include an image collector 232, such as a camera, a camera, etc., which may be used to collect external environment scenes to adaptively change the display parameters of the display device 200; and to collect The attributes of the user or interactive gestures with the user to achieve the function of interaction between the display device and the user.
  • an image collector 232 such as a camera, a camera, etc., which may be used to collect external environment scenes to adaptively change the display parameters of the display device 200; and to collect The attributes of the user or interactive gestures with the user to achieve the function of interaction between the display device and the user.
  • the detector 230 may also include a light receiver, which is used to collect the ambient light intensity to adapt to changes in display parameters of the display device 200.
  • the detector 230 may also include a temperature sensor.
  • the display device 200 may adaptively adjust the display color temperature of the image. Exemplarily, when the temperature is relatively high, the color temperature of the display device 200 can be adjusted to be relatively cool; when the temperature is relatively low, the color temperature of the display device 200 can be adjusted to be relatively warm.
  • the external device interface 240 is a component that provides the controller 250 to control data transmission between the display device 200 and external devices.
  • the external device interface 240 can be connected to external devices such as set-top boxes, game devices, notebook computers, etc. in a wired/wireless manner, and can receive external devices such as video signals (such as moving images), audio signals (such as music), and additional information (such as EPG). ) And other data.
  • the external device interface 240 may include: a high-definition multimedia interface (HDMI) terminal 241, a composite video blanking synchronization (CVBS) terminal 242, an analog or digital component terminal 243, a universal serial bus (USB) terminal 244, and a component (Component) Any one or more of terminals (not shown in the figure), red, green and blue (RGB) terminals (not shown in the figure), etc.
  • HDMI high-definition multimedia interface
  • CVBS composite video blanking synchronization
  • USB universal serial bus
  • Component Any one or more of terminals (not shown in the figure), red, green and blue (RGB) terminals (not shown in the figure), etc.
  • the controller 250 controls the work of the display device 200 and responds to user operations by running various software control programs (such as an operating system and various application programs) stored on the memory 260.
  • various software control programs such as an operating system and various application programs
  • the controller 250 includes a random access memory (RAM) 251, a read only memory (ROM) 252, a graphics processor 253, a CPU processor 254, a communication interface 255, and a communication bus 256.
  • RAM random access memory
  • ROM read only memory
  • CPU CPU processor
  • communication interface 255 a communication bus 256.
  • the RAM 251, the ROM 252, the graphics processor 253, and the CPU processor 254 communication interface 255 are connected through a communication bus 256.
  • ROM252 used to store various system startup instructions. For example, when the power-on signal is received, the power of the display device 200 starts to start, and the CPU processor 254 runs the system start instruction in the ROM 252, and copies the operating system stored in the memory 260 to the RAM 251 to start running the start operating system. After the operating system is started up, the CPU processor 254 copies various application programs in the memory 260 to the RAM 251, and then starts to run and start various application programs.
  • the graphics processor 253 is used to generate various graphics objects, such as icons, operating menus, and user input instructions to display graphics.
  • the graphics processor 253 may include an arithmetic unit, which is used to perform operations by receiving various interactive instructions input by the user, and then display various objects according to the display attributes; and includes a renderer, which is used to generate various objects obtained based on the arithmetic unit, and perform operations.
  • the rendered result is displayed on the display 275.
  • the CPU processor 254 is configured to execute operating system and application program instructions stored in the memory 260. And according to the received user input instructions, to execute various applications, data and content processing, so as to finally display and play various audio and video content.
  • the CPU processor 254 may include multiple processors.
  • the multiple processors may include one main processor and multiple or one sub-processors.
  • the main processor is configured to perform some initialization operations of the display device 200 in the display device preloading mode, and/or, to display screen operations in the normal mode. Multiple or one sub-processor, used to perform an operation in the standby mode of the display device.
  • the communication interface 255 may include the first interface to the nth interface. These interfaces may be network interfaces connected to external devices via a network.
  • the controller 250 may control the overall operation of the display device 200. For example, in response to receiving a user input command for selecting a GUI object displayed on the display 275, the controller 250 may perform an operation related to the object selected by the user input command.
  • the object can be any one of the selectable objects, such as a hyperlink or an icon.
  • the operation related to the selected object for example, the operation of displaying the page, document, image, etc. connected to the hyperlink, or the operation of executing the program corresponding to the object.
  • the user input command for selecting the GUI object may be a command input through various input devices (for example, a mouse, a keyboard, a touch pad, etc.) connected to the display device 200 or a voice command corresponding to a voice spoken by the user.
  • the memory 260 is used to store various types of data, software programs or application programs for driving and controlling the operation of the display device 200.
  • the memory 260 may include volatile and/or nonvolatile memory.
  • the term “memory” includes the memory 260, the RAM 251 and ROM 252 of the controller 250, or the memory card in the display device 200.
  • the memory 260 is specifically used to store operating programs that drive the controller 250 in the display device 200; to store various application programs built in the display device 200 and downloaded from external devices by the user; and to store configuration provided by the display 275 Data such as various GUIs, various objects related to the GUI, and visual effect images of the selector used to select GUI objects.
  • the memory 260 is specifically used to store the drivers and related data of the tuner and demodulator 210, the communicator 220, the detector 230, the external device interface 240, the video processor 270, the display 275, the audio processor 280, etc.
  • external data such as audio and video data
  • user data such as key information, voice information, touch information, etc.
  • the memory 260 specifically stores software and/or programs used to represent an operating system (OS). These software and/or programs may include, for example: kernel, middleware, application programming interface (API), and/or application.
  • OS operating system
  • these software and/or programs may include, for example: kernel, middleware, application programming interface (API), and/or application.
  • the kernel can control or manage system resources, and functions implemented by other programs (such as the middleware, API, or application program); at the same time, the kernel can provide interfaces to allow middleware, API, or application program access control To control or manage system resources.
  • FIG. 1D exemplarily shows a block diagram of the architecture configuration of the operating system in the memory of the display device 200.
  • the operating system architecture from top to bottom is the application layer, the middleware layer and the kernel layer.
  • Application layer system built-in applications and non-system-level applications belong to the application layer. Responsible for direct interaction with users.
  • the application layer can include multiple applications, such as settings applications, e-post applications, media center applications, and so on. These applications can be implemented as web applications, which are executed based on the WebKit engine, and specifically can be developed and executed based on HTML5, Cascading Style Sheets (CSS) and JavaScript.
  • CSS Cascading Style Sheets
  • HTML HyperText Markup Language
  • HTML tags are used to describe text, graphics, animation, sounds, tables, For links, the browser will read the HTML document, explain the content of the tags in the document, and display it in the form of a web page.
  • CSS the full name of Cascading Style Sheets (Cascading Style Sheets), is a computer language used to express the style of HTML files, and can be used to define style structures, such as fonts, colors, and positions. CSS styles can be directly stored in HTML web pages or in separate style files to achieve control over styles in web pages.
  • JavaScript is a language used in web page programming, which can be inserted into HTML pages and interpreted and executed by the browser.
  • the interaction logic of the web application is implemented through JavaScript.
  • JavaScript can encapsulate the JavaScript extension interface through the browser to realize communication with the kernel layer,
  • the middleware layer can provide some standardized interfaces to support various environments and system operations.
  • the middleware layer can be implemented as the Multimedia and Hypermedia Information Coding Expert Group (MHEG) of middleware related to data broadcasting, and can also be implemented as DLNA middleware of middleware related to external device communication, and can also be implemented as providing Display the middleware of the browser environment where each application in the device runs.
  • MHEG Multimedia and Hypermedia Information Coding Expert Group
  • the kernel layer provides core system services, such as file management, memory management, process management, network management, system security authority management and other services.
  • the kernel layer can be implemented as a kernel based on various operating systems, for example, a kernel based on the Linux operating system.
  • the kernel layer also provides communication between system software and hardware, and provides device driver services for various hardware, such as providing display drivers for displays, camera drivers for cameras, button drivers for remote controls, and WIFI modules Provide WiFi driver, audio driver for audio output interface, power management driver for power management (PM) module, etc.
  • device driver services for various hardware, such as providing display drivers for displays, camera drivers for cameras, button drivers for remote controls, and WIFI modules Provide WiFi driver, audio driver for audio output interface, power management driver for power management (PM) module, etc.
  • the user interface 265 receives various user interactions. Specifically, it is used to send the user's input signal to the controller 250, or to transmit the output signal from the controller 250 to the user.
  • the remote control 100A may send input signals such as a power switch signal, a channel selection signal, and a volume adjustment signal input by the user to the user interface 265, and then the user interface 265 transfers to the controller 250; or the remote control 100A may Receive output signals such as audio, video, or data output from the user interface 265 through the controller 250 and display the received output signal or output the received output signal as audio or vibration.
  • the user may input a user command on a graphical user interface (GUI) displayed on the display 275, and the user interface 265 receives the user input command through the GUI.
  • GUI graphical user interface
  • the user interface 265 may receive a user input command for controlling the position of the selector in the GUI to select different objects or items.
  • the user may input a user command by inputting a specific sound or gesture, and the user interface 265 recognizes the sound or gesture through the sensor to receive the user input command.
  • the video processor 270 is used to receive external video signals, and perform video data processing such as decompression, decoding, scaling, noise reduction, frame rate conversion, resolution conversion, and image synthesis according to the standard codec protocol of the input signal.
  • video data processing such as decompression, decoding, scaling, noise reduction, frame rate conversion, resolution conversion, and image synthesis according to the standard codec protocol of the input signal.
  • the video signal displayed or played directly on the display 275.
  • the video processor 270 includes a demultiplexing module, a video decoding module, an image synthesis module, a frame rate conversion module, a display formatting module, and the like.
  • the demultiplexing module is used to demultiplex the input audio and video data stream, such as input MPEG-2 stream (based on the compression standard of digital storage media moving images and voice), then the demultiplexing module will demultiplex it Multiplexed into video signals and audio signals, etc.
  • input audio and video data stream such as input MPEG-2 stream (based on the compression standard of digital storage media moving images and voice)
  • the video decoding module is used to process the demultiplexed video signal, including decoding and scaling.
  • An image synthesis module such as an image synthesizer, is used to superimpose and mix the GUI signal generated by the graphics generator with the zoomed video image according to user input or itself to generate an image signal for display.
  • the frame rate conversion module is used to convert the frame rate of the input video, such as converting the frame rate of the input 60Hz video to a frame rate of 120Hz or 240Hz, and the usual format is implemented in a frame-insertion mode.
  • the display formatting module is used to change the signal output by the frame rate conversion module into a signal that conforms to a display format such as a display, such as format conversion of the signal output by the frame rate conversion module to output RGB data signals.
  • the display 275 is used to receive the image signal input from the video processor 270 to display video content, images, and a menu control interface.
  • the displayed video content can be from the video content in the broadcast signal received by the tuner and demodulator 210, or from the video content input by the communicator 220 or the external device interface 240.
  • the display 275 simultaneously displays a user manipulation interface UI generated in the display device 200 and used for controlling the display device 200.
  • the display 275 may include a display screen component for presenting a picture and a driving component for driving image display.
  • the display 275 may also include a projection device and a projection screen.
  • the audio processor 280 is used to receive external audio signals, and perform decompression and decoding according to the standard codec protocol of the input signal, as well as audio data processing such as noise reduction, digital-to-analog conversion, and amplification processing.
  • the audio signal to be played is used to receive external audio signals, and perform decompression and decoding according to the standard codec protocol of the input signal, as well as audio data processing such as noise reduction, digital-to-analog conversion, and amplification processing.
  • the audio processor 280 may support various audio formats. Such as MPEG-2, MPEG-4, Advanced Audio Coding (AAC), High Efficiency AAC (HE-AAC) and other formats.
  • AAC Advanced Audio Coding
  • HE-AAC High Efficiency AAC
  • the audio output interface 285 is used to receive the audio signal output by the audio processor 280 under the control of the controller 250.
  • the audio output interface 285 may include a speaker 286 or output to an external audio output terminal 287 of a generator of an external device, such as a headset Output terminal.
  • the video processor 270 may include one or more chips.
  • the audio processor 280 may also include one or more chips.
  • the video processor 270 and the audio processor 280 may be separate chips, or may be integrated with the controller 250 in one or more chips.
  • the power supply 290 is used to provide power supply support for the display device 200 with power input from an external power supply under the control of the controller 250.
  • the power supply 290 may be a built-in power supply circuit installed inside the display device 200, or may be a power supply installed outside the display device 200.
  • the display device usually adopts a liquid crystal screen.
  • the liquid crystal screen itself does not emit light. It lights up the screen through the action of a backlight light source to present an image on the screen.
  • the display device usually uses multi-zone dynamic backlight modulation technology to control the brightness of the backlight light source.
  • the backlight panel of the display device screen is usually provided with multiple light bars (backlight light sources), and one light bar is used to control the display device.
  • the brightness of each light bar can be independently controlled by the backlight controller, so that the display device screen is divided into multiple independent partitions, and the brightness of each partition can be independently controlled to better present the image.
  • Fig. 2 shows a schematic diagram of backlight control provided with a backlight control MCU and provided by a semiconductor laser as a backlight source.
  • the backlight control process after power-on includes: the main controller 101 generates a pulse width modulation (PWM) signal for backlight control and the brightness information of each light bar based on the dithering technology, and combines the PWM
  • PWM pulse width modulation
  • the signal and brightness information of each light bar are sent to the backlight control MCU 102, where the brightness information of each light bar is sent using the serial peripheral interface (Serial Peripheral Interface, SPI) protocol; the backlight control MCU 102 will send the processed PWM signal and The brightness information of each light bar is integrated and limited, and the processed brightness information of each light bar is sent to the backlight controller 103; the backlight controller 103 outputs the corresponding PWM signal according to the brightness information of each light bar, through The PWM signal adjusts the current size of the corresponding light bar on the backlight board 104, thereby controlling the
  • the main controller 101 powers on the backlight control MCU 102, and the backlight control MUC 102 starts the backlight controller 103 for initialization.
  • the main controller 101 generates the PWM signal and light bar brightness information and outputs them to the backlight control MCU 102.
  • the backlight control MUC 102 integrates the input PWM signal and light bar brightness information, which is performed in parallel with the initialization process of the backlight controller 103 . In this way, the backlight controller 103 is initialized first, and then after the backlight control MCU outputs the PWM signal for controlling the brightness of the light bar, the brightness control of the light bar can be realized.
  • the initialization of the backlight controller 103 is completed before the output of the PWM signal used to control the brightness of the light bar, that is, the initialization of the backlight controller 103 and the backlight control data are synchronized, and the backlight control data meets the requirements of the backlight controller 103. Screen timing, so the display device screen will not appear the phenomenon of flickering.
  • the main controller 101, the MCU 102, and the backlight controller 103 in FIG. 2 may be integrated, corresponding to the controller 250 in FIG. 1C.
  • FIG. 3 shows a schematic diagram of backlight control in which the backlight control MCU is removed and the semiconductor laser provides the backlight light source.
  • the backlight control process after power-on includes: the main controller 201 generates the PWM duty cycle value for backlight adjustment and the brightness information of each light bar based on the dithering technology, and compares the PWM duty cycle value and the light bar The brightness information is integrated to obtain the integrated brightness information of each light bar, and the integrated brightness information of each light bar is sent to the backlight controller 202 using the SPI protocol; the backlight controller 202 outputs according to the brightness information of each light bar According to the corresponding PWM signal, the current of the corresponding light bar on the backlight board 203 is adjusted by the PWM signal, thereby controlling the brightness of the corresponding light bar, and then realizing the brightness control of the corresponding screen partition.
  • the main controller 201 can still output a PWM signal (represented by a dotted line in the figure), but the PWM signal is in a floating state, that is, it will not be output to the backlight controller 202.
  • the main controller 201 powers on the backlight controller 202 so that the backlight controller 202 starts to initialize.
  • the process of the main controller 201 generating light bar brightness information is performed in parallel with the initialization process of the backlight controller 202. In this way, the backlight controller 202 is initialized first, and then the brightness control of the light bar can be realized after the main controller 201 outputs the light bar brightness information.
  • the initialization of the backlight controller 202 is completed before the output of the light bar brightness information, that is, the initialization of the backlight controller 202 is synchronized with the backlight control data, and the backlight control data meets the screen opening sequence required by the backlight controller 202, so the display The screen of the device will not show the phenomenon of flickering.
  • the main controller 201 and the backlight controller 202 in FIG. 3 may be integrated, corresponding to the controller 250 in FIG. 1C.
  • STR Suspend to RAM
  • Wi-Fi signal wake-up methods such as Wi-Fi signal wake-up methods.
  • the display device when the display device is awakened by the Wi-Fi signal wake-up method, due to the needs of the upper-layer business logic, the display device is required to be awakened but the display device screen is not lit (that is, the display device screen backlight is not turned on).
  • the display device screen When the user presses the power-on button of the remote control of the display device or sends a power-on instruction to the display device by other means or sends a media file to be played to the display device, the display device screen is lit (that is, the display device screen backlight is turned on).
  • the main controller 201 performs the above-mentioned process of generating light bar brightness information during the process of the display device being awakened. After that, when the user presses the power button on the remote control of the display device (or triggers the screen to light up in other ways), the main controller 201 powers on the backlight controller 202 and outputs the previously generated light bar brightness information to the backlight controller 202 After the backlight controller 202 is powered on, the main controller 201 controls the backlight controller 202 to initialize according to the timing requirements of the backlight controller 202.
  • the output of the light bar brightness information is first, and the initialization of the backlight controller 202 is completed later, that is, the initialization of the backlight controller 202 is not synchronized with the backlight control data, and the backlight control data does not meet the screen opening sequence required by the backlight controller 202. Since the initialization of the backlight controller 202 has not been completed, and the state is not stable yet, performing backlight control according to the received light bar brightness information at this time will cause temporary blurring of the display device screen, which affects the user experience.
  • the main controller of the display device generates backlight control information when the display device is awakened and buffers the backlight control information.
  • the main controller controls the backlight controller to light up the display device screen
  • the main controller is determining After the initialization of the backlight controller is completed, the buffered backlight control information is output to the backlight controller, so that the backlight controller can control the backlight of the display device screen.
  • the display device is awakened, the screen is not lit, and when the display device screen is subsequently lit, the embodiment of the present application can avoid the phenomenon of temporary screen blurring.
  • FIG. 4 is a schematic diagram of a backlight control process provided by an embodiment of the application. This process is applicable to the backlight control architecture of the display device shown in FIG. 2, that is, the architecture does not include a backlight control MCU. As shown in the figure, the process can include:
  • the main controller In response to the display device being awakened, the main controller generates backlight control information and buffers the backlight control information.
  • the main controller may respond to the display device wake-up event, generate backlight control information, and cache the backlight control information.
  • the backlight control information may include brightness information of at least one light bar.
  • a plurality of light bars can be provided on the backlight panel of the display device, so as to realize the partition brightness control of the display device screen.
  • the backlight control information may include brightness information of each light bar, and the brightness information of each light bar may be cached in a queue form.
  • Fig. 5 exemplarily shows a light bar brightness information buffered in the form of a queue.
  • the light bar brightness information can be stored as a data structure conforming to the SPI protocol.
  • the display device screen keeps the backlight off, that is, the display device screen is not lit.
  • S302 The main controller activates the backlight controller, so that the backlight controller is initialized.
  • the main controller can output a start signal to the backlight controller or provide a power supply voltage for the backlight controller to start the backlight controller.
  • the main controller may activate the backlight controller in response to the backlight turning on.
  • the screen may not be turned on, and the screen backlight of the display device can be turned on after receiving a backlight turn-on instruction or an event for triggering the backlight turn-on.
  • the remote control of the display device sends an instruction to the display device to turn on the screen backlight of the display device; for another example, when the user sends media playback to the display device through a mobile terminal Request to request the display device to play the corresponding media file, which can trigger the display device to turn on the backlight.
  • the main controller In response to the completion of the initialization of the backlight controller, the main controller outputs the backlight control information to the backlight controller, so that the backlight controller controls the screen backlight of the display device according to the backlight control information.
  • the backlight controller is initialized first after being started.
  • the main controller determines whether the initialization of the backlight controller is completed, and if it determines that the initialization of the backlight controller is completed, it outputs the buffered backlight control information to the backlight controller.
  • the backlight controller may use the SPI protocol to output the backlight control information to the backlight controller.
  • the main controller may determine whether the initialization of the backlight controller is completed in the following manner: the main controller obtains the working state indication information of the backlight controller, and determines the backlight controller according to the working state indication information Whether the initialization is complete.
  • its working state is an abnormal working state (for example, it may be a reset state or other working state).
  • the backlight controller includes a number of registers, some of which are used to record the working state of the backlight controller. When the working state of the backlight controller changes, the corresponding working state indication information can be written into the register, that is, by reading This register can know the current working status of the backlight controller.
  • one or more bits in different positions may have different meanings, for example, the high-order 3 bits of the bit sequence
  • the value represents the working status of the backlight controller.
  • the main controller can read the bit sequence of the register used to identify the working state in the backlight controller, and read the value of the sub-sequence of the specified position in the bit sequence, where the sub-sequence of the specified position The value of the sequence is used to indicate the working status of the backlight controller.
  • the main controller in S301, the main controller generates backlight control information and buffers the backlight control information in response to the display device being awakened in a specified wake-up mode.
  • the screen backlight of the display device is not turned on when the display device is awakened in the specified wake-up mode, and the screen backlight of the display device is turned on after receiving the backlight turn-on instruction.
  • the main controller determines the used wake-up mode, and if the used wake-up mode is the aforementioned specified wake-up mode, the main controller generates backlight control information in the aforementioned manner and caches the backlight control information; If the main controller determines that the used wake-up mode is not the above-mentioned specified wake-up mode, it can be processed in a conventional manner, for example, generating backlight control information, powering on the backlight controller (ie, starting the backlight controller) and controlling the generated backlight The information is output to the backlight controller.
  • the main controller can determine the wake-up mode according to the type of wake-up signal or the source of the wake-up command. For example, if the Wi-Fi module inside the display device receives a signal for waking up the display device, it can trigger the main controller to adopt the above Specify the wake-up mode to wake up.
  • the process of generating backlight control information by the main controller may include: generating brightness information for at least one light bar for the light bar provided on the backlight panel of the display device screen; Controlled PWM duty ratio value; obtaining the backlight control information according to the brightness information of the at least one light bar and the PWM duty ratio value.
  • the process of obtaining the backlight control information by the main controller according to the brightness information of the at least one light bar and the PWM duty cycle value may include: The brightness information of the light bar is processed with the PWM duty ratio value to obtain the backlight control information.
  • the processing includes: integrating the brightness information of the at least one light bar with the PWM duty cycle value, and performing amplitude limiting processing on the integrated light bar control information.
  • Fig. 6 exemplarily shows a process in which the main controller generates backlight control information.
  • Fig. 6 uses 16 light bars on the backlight board to divide the display device screen into 16 partitions as an example to describe the generation and processing process of the backlight control information of the main controller.
  • the process may include:
  • S510 Obtain brightness information of the light bar.
  • local dimming data local dimming data
  • the kernel can generate local dimming data (local dimming data)
  • the main controller can obtain the local dimming data (local dimming data) of 16 partitions from the separate files of the data. dimming data).
  • S511 Perform abnormal data processing on the local dimming data, and the abnormal data has been removed.
  • S512 Perform averaging processing or filtering processing on the local dimming data after the abnormal data processing.
  • S513 Perform dimming smooth transition processing on the local dimming data after averaging or filtering.
  • S514 Perform amplitude limiting processing on the local dimming data after smooth transition processing.
  • the PWM duty cycle value can be generated according to the basic backlight and light perception. During specific implementation, the PWM duty cycle value can be generated by the middleware.
  • S522 Perform abnormal data processing on the calibrated PWM duty cycle value.
  • S523 Perform PWM smooth transition processing on the PWM duty cycle value after abnormal data processing.
  • S524 Perform amplitude limiting processing on the PWM duty cycle value after smooth transition processing.
  • S530 ⁇ S531 Integrate the local dimming data processed in S514 and the PWM duty ratio value processed in S524, and perform amplitude limiting processing on the integrated data to obtain brightness information corresponding to 16 light bars.
  • the brightness information can be buffered first, and after the initialization of the backlight controller is completed, the brightness information is output to the backlight controller.
  • the generation of light bar brightness information and the subsequent processing of the light bar brightness information can be performed in parallel with the generation of the PWM duty cycle value and the subsequent processing of the value.
  • the dimming value of each subarea is set at the value of each frame. Add or subtract according to a certain step in the time interval, and set the step to 3 after tuning to ensure uniform brightness changes. Since the local diming data is 8bit and the PWM duty data is 8bit, the PWM duty will be used as a global gain value multiplied by the brightness information of each partition, and the obtained data will be converted into The 12 bits required by the backlight controller (such as the backlight controller) are used to synthesize the backlight control data and the local dimming data, and then input them to the backlight controller to control the backlight.
  • the backlight controller such as the backlight controller
  • the process shown in FIG. 6 when performing PWM smoothing, first compare the real-time dynamic refresh data with the backup data in the previous execution cycle. If the difference between the dynamic refresh data and the backup data is greater than or If it is equal to the set threshold, it will step to the dynamic brightness value with the set step length. If the difference between the dynamically refreshed data and the backup data is less than the set threshold, the current dynamic refresh data will be maintained. For example, the backlight brightness can be added or subtracted according to a step size of 1.
  • Fig. 7 exemplarily shows a smooth transition process. As shown in Figure 7, the process may include:
  • S601 Determine whether the real-time dynamic refresh data is greater than or equal to the backup data in the previous execution cycle, if yes, go to S602, otherwise go to S605.
  • S602 Determine whether the difference obtained by subtracting the backup data in the last execution cycle from the real-time dynamic refresh data is greater than the set value STEP_CNST, if yes, go to S603, otherwise go to S604.
  • S603 Set the current backlight brightness to the sum of the backup data in the previous execution cycle and the set value STEP_CNST, and transfer to S608.
  • S604 Set the current backlight brightness to be equal to the real-time dynamic refresh data, and transfer to S608.
  • S605 Determine whether the difference obtained by subtracting the real-time dynamic refresh data from the backup data in the previous execution cycle is greater than the set value STEP_CNST, if yes, go to S606, otherwise go to S607.
  • S606 Set the current backlight brightness to the difference obtained by subtracting the set value STEP_CNST from the backup data in the previous execution cycle, and transfer to S608.
  • S607 Set the current backlight brightness to be equal to the real-time dynamic refresh data, and transfer to S608.
  • the main controller After the main controller generates the backlight control information, it first buffers the backlight control information, and when it is determined that the backlight controller is initialized, it outputs the backlight control information to the backlight controller.
  • the initialization is completed before the output of the brightness information of the light bar, that is, the initialization of the backlight controller is synchronized with the backlight control data.
  • the backlight control data meets the screen opening sequence required by the backlight controller, so the display device screen will not appear to be screened.
  • the backlight control information is first generated.
  • the backlight control information is immediately set If it is output to the backlight controller, it may be that the backlight controller has not been initialized yet, and the backlight control data does not need to meet the screen turn-on sequence required by the backlight controller, thus causing the display device screen to appear blurred.
  • the main controller outputs the backlight control information to the backlight controller after determining that the initialization of the backlight controller is completed, which can ensure that the backlight control data meets the screen opening sequence required by the backlight controller, so the display device screen does not There will be a blurring phenomenon.
  • the above-mentioned embodiments of the present application only exemplarily give the main steps in the backlight control process.
  • the backlight control process depends on the type or model of the main controller and the backlight controller used. It may also include some other processes.
  • Fig. 8 exemplarily shows a schematic diagram of the connection between the main controller and the backlight controller.
  • the GPIO (General-purpose input/output) port of the main controller is connected to the GPIO port of the backlight controller.
  • the main controller's Vsync port, VIN port, PLL port (clock port), and SPI protocol related interfaces correspond to the backlight controller ⁇ connection.
  • the Vsync port is used to achieve synchronization
  • the VIN port is used to provide the power supply voltage for the backlight controller
  • the SPI protocol related interface is used to implement information interaction with the backlight controller.
  • Figure 9 shows the initialization process of the backlight controller. As shown in the figure, the process may include:
  • S81 The main controller powers on the backlight controller.
  • the generated backlight control information is buffered in the main controller, and the backlight control information is generated by the main controller when the display device is awakened.
  • the main controller receives the power-on instruction sent by the user through the remote control, it first pulls the GPIO interface level high, so that the backlight controller is powered on and initialized, and the main controller controls the Vsync signal to be in a low level state.
  • S82 The main controller waits for the backlight controller to initialize, which takes about 8ms.
  • the backlight controller circuit is stable, the VIN (input voltage) voltage is greater than 7 volts, and the length of the test is about 8ms, so the main controller needs to wait about 8ms to wait for the backlight control
  • the device is initialized.
  • S83 The main controller checks the SPI configuration of the backlight controller to confirm that the SPI communication is normal.
  • the main controller writes 0x06 to the 0x00 register of the backlight controller (see S831 in the figure), and then reads the 0x00 register of the backlight controller (see S832 in the figure); if the value of the 0x00 register is 0x06, it means The SPI configuration of the backlight controller is normal, and transfer to S84, otherwise it indicates that the SPI configuration of the backlight controller is abnormal. If the configuration is abnormal, you can repeat the SPI configuration check process until the SPI configuration of the backlight controller is normal (see S833 in the figure) .
  • S84 The main controller configures the registers of the backlight controller.
  • the main controller writes the configured partition data into the registers of the backlight controller: 0x00 ⁇ 0x39 and 0x40 ⁇ 0x65.
  • the main controller also controls the PWM signal to meet the requirements of the backlight controller.
  • the main controller provides a stable Vsync pulse signal.
  • the pulse signal meets the minimum pulse width requirement of the Vsync signal, which is greater than 20us.
  • S86 The main controller waits for the PSU (power supply unit) of the light bar to stabilize and the internal clock of the backlight controller to stabilize.
  • PSU power supply unit
  • the main controller waits for the power supply of the light bar to stabilize and the internal clock of the backlight controller to stabilize. If the backlight controller selects the PLL (Phase Locked Loop, phase locked loop) clock work mode, it needs to wait for the internal PLL to stabilize at the same time, and the length of time for the internal PLL clock to stabilize is about 500 ms. If the backlight controller selects OSC (oscillator, oscillator) or external clock (External CLK), the main controller only needs to wait for the light bar power supply output voltage to stabilize.
  • PLL Phase Locked Loop, phase locked loop
  • the system design defaults to wait for 50ms, after the light bar power supply stabilizes, perform subsequent operations.
  • S87 The main controller starts to make a calibration judgment on the backlight controller.
  • the backlight controller exits the reset state. After exiting the reset state, the set register value becomes effective.
  • the main controller sets the bit0 of the 0x00 register of the backlight controller to 1, and starts to judge the calibration completion of the backlight controller.
  • S88 The main controller performs a calibration completion judgment on the backlight controller.
  • 0xB3 register The definition of 0xB3 register is as follows:
  • the backlight controller enters the OTF (on the fly) state, that is, enters the working state, the calibration is completed, and the main controller writes the buffered backlight control information to the backlight controller.
  • the main controller may force the Vsync signal to be pulled low after receiving the signal that the display device screen is turned off.
  • an embodiment of the present application also provides a screen backlight control device of a display device.
  • the control device may be the main controller in the foregoing embodiment.
  • the device may include: a backlight control information generating module 901, a backlight controller control module 902, and a backlight control information output module 903.
  • the backlight control information generating module 901 is configured to generate backlight control information and buffer the backlight control information in response to the display device being awakened.
  • the backlight controller control module 902 is used to activate the backlight controller so that the backlight controller is initialized.
  • the backlight control information output module 903 is configured to output the backlight control information to the backlight controller in response to the completion of the initialization of the backlight controller, so that the backlight controller backlights the display device screen according to the backlight control information. Take control.
  • the backlight controller control module 902 is specifically configured to activate the backlight controller in response to turning on the backlight.
  • the backlight control information output module 903 is specifically configured to: obtain the working state indication information of the backlight controller; if the working state indicated by the working state indication information of the backlight controller is initialization completed , Then output the backlight control information to the backlight controller.
  • the backlight control information output module 903 is specifically configured to: read the bit sequence of the register used to identify the working state in the backlight controller, and read the sub-array at a specified position in the bit sequence.
  • the numerical value of the sequence, the value of the sub-sequence of the designated position is used to indicate the working state of the backlight controller.
  • the backlight control information generating module 901 is specifically configured to: generate brightness information of at least one light bar for the light bar provided on the backlight panel of the display device screen; generate PWM duty for backlight control Ratio; obtain the backlight control information according to the brightness information of the at least one light bar and the PWM duty ratio value.
  • the backlight control information generation module 901 is specifically configured to process the brightness information of the at least one light bar and the PWM duty cycle value to obtain the backlight control information, wherein The processing includes: integrating the brightness information of the at least one light bar with the PWM duty cycle value, and performing amplitude limiting processing on the integrated light bar control information.
  • the backlight control information generation module 901 is specifically configured to generate backlight control information and cache the backlight control information in response to the display device being awakened in a specified wake-up mode; wherein the display device uses the specified The screen backlight of the display device is not turned on when the wake-up mode is awakened.
  • embodiments of the present application also provide a display device, which may include: a display screen, a backlight light source, a main controller, and a backlight controller.
  • the main controller can realize the functions of the main controller in the foregoing embodiments of the present application
  • the backlight controller may realize the functions of the backlight controller in the foregoing embodiments of the present application.

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Abstract

一种显示设备的屏幕背光控制方法，主控制器响应于显示设备被唤醒，生成背光控制信息并缓存背光控制信息（S301）；主控制器启动背光控制器，使得背光控制器进行初始化（S302）；主控制器响应于背光控制器初始化完成，将背光控制信息输出给背光控制器，使得背光控制器根据背光控制信息对显示设备屏幕背光进行控制（S303）。

Description

背光控制方法、装置及显示设备
本申请要求在2019年6月27日提交中国专利局、申请号为201910570434.8、发明名称为“一种电视屏幕背光控制方法、装置及电视”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及显示设备屏幕背光控制技术领域，特别是涉及一种显示设备屏幕背光控制方法、装置及显示设备。
背景技术
为了降低显示设备的生产成本，一种可行的解决方案是将显示设备中用于对显示设备屏幕背光进行控制的微控制单元(Micro-Controller Unit，MCU)去除，通过软件实现对显示设备屏幕背光的控制功能，从而节约显示设备的生产成本。
对于去除背光控制MCU，进而由软件实现背光控制的显示设备，如何进行显示设备屏幕背光控制并保证显示设备屏幕显示效果是目前需要解决的技术问题。
发明内容
本申请实施例提供一种显示设备屏幕背光控制方法、装置及显示设备。
第一方面，提供一种显示设备的屏幕背光控制方法，包括：
主控制器响应于显示设备被唤醒，生成背光控制信息并缓存所述背光控制信息；
所述主控制器启动背光控制器，使得所述背光控制器进行初始化；
所述主控制器响应于所述背光控制器初始化完成，将所述背光控制信息输出给所述背光控制器，使得所述背光控制器根据所述背光控制信息对显示设备屏幕背光进行控制。
第二方面，提供一种显示设备的屏幕背光控制装置，包括：
背光控制信息生成模块，用于响应于显示设备被唤醒，生成背光控制信息并缓存所述背光控制信息；
背光控制器控制模块，用于响应于背光开启，启动背光控制器，使得所述背光控制器进行初始化；
背光控制信息输出模块，用于响应于所述背光控制器初始化完成，将所述背光控制信息输出给所述背光控制器，使得所述背光控制器根据所述背光控制信息对显示设备屏幕背光进行控制。
第三方面，提供一种显示设备，包括：
屏幕；
背光光源，用于为屏幕提供背光；
主控制器，用于执行：
响应于显示设备被唤醒的指令，生成背光控制信息并缓存所述背光控制信息；启动背光控制器，使得所述背光控制器进行初始化；以及，响应于所述背光控制器初始化完成，将所述背光控制信息输出给所述背光控制器，使得所述背光控制器根据所述背光控制信息对背光光源进行控制；
背光控制器，用于执行：
响应于所述主控制器的启动控制，进行初始化；以及，响应于所述主控制器输出的背光控制信息，对背光光源进行控制。
附图说明
图1A中示例性示出了显示设备与控制装置之间操作场景的示意图；
图1B中示例性示出了图1A中控制装置100的配置框图；
图1C中示例性示出了图1A中显示设备200的配置框图；
图1D中示例性示出了显示设备200存储器中操作系统的架构配置框图；
图2为设置有背光控制MCU的背光控制示意图；
图3为去除背光控制MCU的背光控制示意图；
图4为本申请实施例提供的背光控制流程示意图；
图5为本申请实施例中的背光控制信息缓存队列示意图；
图6为本申请实施例提供的主控制器的处理流程示意图；
图7为本申请实施例提供的PWM平滑处理的流程示意图；
图8为本申请实施例提供的主控制器和背光控制器的连接示意图；
图9为本申请实施例中的背光控制流程示意图；
图10为本申请实施例提供的屏幕背光控制装置的结构示意图。
具体实施方式
图1A中示例性示出了显示设备与控制装置之间操作场景的示意图。如图1A所示，控制装置100和显示设备200之间可以有线或无线方式进行通信。
其中，控制装置100被配置为控制显示设备200，其可接收用户输入的操作指令，且将操作指令转换为显示设备200可识别和响应的指令，起着用户与显示设备200之间交互的中介作用。如：用户通过操作控制装置100上频道加减键，显示设备200响应频道加减的操作。
控制装置100可以是遥控器100A，包括红外协议通信或蓝牙协议通信，及其他短距离通信方式等，通过无线或其他有线方式来控制显示设备200。用户可以通过遥控器上按键、语音输入、控制面板输入等输入用户指令，来控制显示设备200。如：用户可以通过遥控器上音量加减键、频道控制键、上/下/左/右的移动按键、语音输入按键、菜单键、开关机按键等输入相应控制指令，来实现控制显示设备200的功能。
控制装置100也可以是智能设备，如移动终端100B、平板电脑、计算机、笔记本电脑等。例如，使用在智能设备上运行的应用程序控制显示设备200。该应用程序通过配置可以在与智能设备关联的屏幕上，通过直观的用户界面(UI)为用户提供各种控制。
示例性的，移动终端100B可与显示设备200安装软件应用，通过网络通信协议实现连接通信，实现一对一控制操作的和数据通信的目的。如：可以使移动终端100B与显示设备200建立控制指令协议，通过操作移动终端100B上提供的用户界面的各种功能键或虚拟按钮，来实现如遥控器100A布置的实体按键的功能。也可以将移动终端100B上显示的音视频内容传输到显示设备200上，实现同步显示功能。
显示设备200可提供广播接收功能和计算机支持功能的网络电视功能。显示设备可以实施为，数字电视、网络电视、互联网协议电视(IPTV)等。
显示设备200，可以是液晶显示器、有机发光显示器、投影设备。具体显示设备类型、尺寸大小和分辨率等不作限定。
显示设备200还与服务器300通过多种通信方式进行数据通信。这里可允许显示设备200通过局域网(LAN)、无线局域网(WLAN)和其他网络进行通信连接。服务器300可以向显示设备200提供各种内容和互动。示例的，显示设备200可以发送和接收信息，例如：接收电子节目指南(EPG)数据、接收软件程序更新、或访问远程储存的数字媒体库。服务器300可以一组，也可以多组，可以一类或多类服务器。通过服务器300提供视频点播和广告服务等其他网络服务内容。
图1B中示例性示出了控制装置100的配置框图。如图1B所示，控制装置100包括控制器110、存储器120、通信器130、用户输入接口140、输出接口150、供电电源160。
控制器110包括随机存取存储器(RAM)111、只读存储器(ROM)112、处理器113、通信接口以及通信总线。控制器110用于控制控制装置100的运行和操作，以及内部各部件之间的通信协作、外部和内部的数据处理功能。
示例性的，当检测到用户按压在遥控器100A上布置的按键的交互或触摸在遥控器100A上布置的触摸面板的交互时，控制器110可控制产生与检测到的交互相应的信号，并将该信号发送到显示设备200。
存储器120，用于在控制器110的控制下存储驱动和控制控制装置100的各种运行程序、数据和应用。存储器120，可以存储用户输入的各类控制信号指令。
通信器130在控制器110的控制下，实现与显示设备200之间控制信号和 数据信号的通信。如：控制装置100经由通信器130将控制信号(例如触摸信号或按钮信号)发送至显示设备200上，控制装置100可经由通信器130接收由显示设备200发送的信号。通信器130可以包括红外信号接口131和射频信号接口132。例如：红外信号接口时，需要将用户输入指令按照红外控制协议转化为红外控制信号，经红外发送模块进行发送至显示设备200。再如：射频信号接口时，需将用户输入指令转化为数字信号，然后按照射频控制信号调制协议进行调制后，由射频发送端子发送至显示设备200。
用户输入接口140，可包括麦克风141、触摸板142、传感器143、按键144等中至少一者，从而用户可以通过语音、触摸、手势、按压等将关于控制显示设备200的用户指令输入到控制装置100。
输出接口150，通过将用户输入接口140接收的用户指令输出至显示设备200，或者，输出由显示设备200接收的图像或语音信号。这里，输出接口150可以包括LED接口151、产生振动的振动接口152、输出声音的声音输出接口153和输出图像的显示器154等。例如，遥控器100A可从输出接口150接收音频、视频或数据等输出信号，并且将输出信号在显示器154上显示为图像形式、在声音输出接口153输出为音频形式或在振动接口152输出为振动形式。
供电电源160，用于在控制器110的控制下为控制装置100各元件提供运行电力支持。形式可以为电池及相关控制电路。
图1C中示例性示出了显示设备200的硬件配置框图。如图1C所示，显示设备200中可以包括调谐解调器210、通信器220、检测器230、外部装置接口240、控制器250、存储器260、用户接口265、视频处理器270、显示器275、音频处理器280、音频输出接口285、供电电源290。
调谐解调器210，通过有线或无线方式接收广播电视信号，可以进行放大、混频和谐振等调制解调处理，用于从多个无线或有线广播电视信号中解调出用户所选择的电视频道的频率中所携带的音视频信号，以及附加信息(例如EPG数据)。
调谐解调器210，可根据用户选择，以及由控制器250控制，响应用户选择的电视频道的频率以及该频率所携带的电视信号。
调谐解调器210，根据电视信号的广播制式不同，可以接收信号的途径有很多种，诸如：地面广播、有线广播、卫星广播或互联网广播等；以及根据调制类型不同，可以数字调制方式或模拟调制方式；以及根据接收电视信号的种类不同，可以解调模拟信号和数字信号。
在其他一些示例性实施例中，调谐解调器210也可在外部设备中，如外部机顶盒等。这样，机顶盒通过调制解调后输出电视信号，经过外部装置接口240输入至显示设备200中。
通信器220，是用于根据各种通信协议类型与外部设备或外部服务器进行通信的组件。例如显示设备200可将内容数据发送至经由通信器220连接的外部设备，或者，从经由通信器220连接的外部设备浏览和下载内容数据。通信器220可以包括WIFI模块221、蓝牙通信协议模块222、有线以太网通信协议模块223等网络通信协议模块或近场通信协议模块，从而通信器220可根据控制器250的控制接收控制装置100的控制信号，并将控制信号实现为WIFI信号、蓝牙信号、射频信号等。
检测器230，是显示设备200用于采集外部环境或与外部交互的信号的组件。检测器230可以包括声音采集器231，如麦克风，可以用于接收用户的声 音，如用户控制显示设备200的控制指令的语音信号；或者，可以采集用于识别环境场景类型的环境声音，实现显示设备200可以自适应环境噪声。
在其他一些示例性实施例中，检测器230，还可以包括图像采集器232，如相机、摄像头等，可以用于采集外部环境场景，以自适应变化显示设备200的显示参数；以及用于采集用户的属性或与用户交互手势，以实现显示设备与用户之间互动的功能。
在其他一些示例性实施例中，检测器230，还可以包括光接收器，用于采集环境光线强度，以自适应显示设备200的显示参数变化等。
在其他一些示例性实施例中，检测器230，还可以包括温度传感器，如通过感测环境温度，显示设备200可自适应调整图像的显示色温。示例性的，当温度偏高的环境时，可调整显示设备200显示图像色温偏冷色调；当温度偏低的环境时，可以调整显示设备200显示图像色温偏暖色调。
外部装置接口240，是提供控制器250控制显示设备200与外部设备间数据传输的组件。外部装置接口240可按照有线/无线方式与诸如机顶盒、游戏装置、笔记本电脑等外部设备连接，可接收外部设备的诸如视频信号(例如运动图像)、音频信号(例如音乐)、附加信息(例如EPG)等数据。
其中，外部装置接口240可以包括：高清多媒体接口(HDMI)端子241、复合视频消隐同步(CVBS)端子242、模拟或数字分量端子243、通用串行总线(USB)端子244、组件(Component)端子(图中未示出)、红绿蓝(RGB)端子(图中未示出)等任一个或多个。
控制器250，通过运行存储在存储器260上的各种软件控制程序(如操作系统和各种应用程序)，来控制显示设备200的工作和响应用户的操作。
如图1C所示，控制器250包括随机存取存储器(RAM)251、只读存储器(ROM)252、图形处理器253、CPU处理器254、通信接口255、以及通信总线256。其中，RAM251、ROM252以及图形处理器253、CPU处理器254通信接口255通过通信总线256相连接。
ROM252，用于存储各种系统启动指令。如在接收到开机信号时，显示设备200电源开始启动，CPU处理器254运行ROM252中的系统启动指令，将存储在存储器260的操作系统拷贝至RAM251中，以开始运行启动操作系统。当操作系统启动完成后，CPU处理器254再将存储器260中各种应用程序拷贝至RAM251中，然后，开始运行启动各种应用程序。
图形处理器253，用于产生各种图形对象，如图标、操作菜单、以及用户输入指令显示图形等。图形处理器253可以包括运算器，用于通过接收用户输入各种交互指令进行运算，进而根据显示属性显示各种对象；以及包括渲染器，用于产生基于运算器得到的各种对象，将进行渲染的结果显示在显示器275上。
CPU处理器254，用于执行存储在存储器260中的操作系统和应用程序指令。以及根据接收的用户输入指令，来执行各种应用程序、数据和内容的处理，以便最终显示和播放各种音视频内容。
在一些示例性实施例中，CPU处理器254，可以包括多个处理器。多个处理器可包括一个主处理器以及多个或一个子处理器。主处理器，用于在显示设备预加载模式中执行显示设备200的一些初始化操作，和/或，在正常模式下显示画面的操作。多个或一个子处理器，用于执行在显示设备待机模式等状态下的一种操作。
通信接口255，可包括第一接口到第n接口。这些接口可以是经由网络被 连接到外部设备的网络接口。
控制器250可以控制显示设备200的整体操作。例如：响应于接收到用于选择在显示器275上显示的GUI对象的用户输入命令，控制器250便可以执行与由用户输入命令选择的对象有关的操作。
其中，该对象可以是可选对象中的任何一个，例如超链接或图标。该与所选择的对象有关的操作，例如显示连接到超链接页面、文档、图像等操作，或者执行与对象相对应的程序的操作。该用于选择GUI对象的用户输入命令，可以是通过连接到显示设备200的各种输入装置(例如，鼠标、键盘、触摸板等)输入命令或者与由用户说出语音相对应的语音命令。
存储器260，用于存储驱动和控制显示设备200运行的各种类型的数据、软件程序或应用程序。存储器260可以包括易失性和/或非易失性存储器。而术语“存储器”包括存储器260、控制器250的RAM251和ROM252、或显示设备200中的存储卡。
在一些实施例中，存储器260具体用于存储驱动显示设备200中控制器250的运行程序；存储显示设备200内置的和用户从外部设备下载的各种应用程序；存储用于配置由显示器275提供的各种GUI、与GUI相关的各种对象及用于选择GUI对象的选择器的视觉效果图像等数据。
在一些实施例中，存储器260具体用于存储调谐解调器210、通信器220、检测器230、外部装置接口240、视频处理器270、显示器275、音频处理器280等的驱动程序和相关数据，例如从外部装置接口接收的外部数据(例如音视频数据)或用户接口接收的用户数据(例如按键信息、语音信息、触摸信息等)。
在一些实施例中，存储器260具体存储用于表示操作系统(OS)的软件和/或 程序，这些软件和/或程序可包括，例如：内核、中间件、应用编程接口(API)和/或应用程序。示例性的，内核可控制或管理系统资源，以及其它程序所实施的功能(如所述中间件、API或应用程序)；同时，内核可以提供接口，以允许中间件、API或应用程序访问控制器，以实现控制或管理系统资源。
图1D中示例性示出了显示设备200存储器中操作系统的架构配置框图。该操作系统架构从上到下依次是应用层、中间件层和内核层。
应用层，系统内置的应用程序以及非系统级的应用程序都是属于应用层。负责与用户进行直接交互。应用层可包括多个应用程序，如设置应用程序、电子帖应用程序、媒体中心应用程序等。这些应用程序可被实现为Web应用，其基于WebKit引擎来执行，具体可基于HTML5、层叠样式表(CSS)和JavaScript来开发并执行。
这里，HTML，全称为超文本标记语言(HyperText Markup Language)，是一种用于创建网页的标准标记语言，通过标记标签来描述网页，HTML标签用以说明文字、图形、动画、声音、表格、链接等，浏览器会读取HTML文档，解释文档内标签的内容，并以网页的形式显示出来。
CSS，全称为层叠样式表(Cascading Style Sheets)，是一种用来表现HTML文件样式的计算机语言，可以用来定义样式结构，如字体、颜色、位置等的语言。CSS样式可以直接存储与HTML网页或者单独的样式文件中，实现对网页中样式的控制。
JavaScript，是一种应用于Web网页编程的语言，可以插入HTML页面并由浏览器解释执行。其中Web应用的交互逻辑都是通过JavaScript实现。JavaScript可以通过浏览器，封装JavaScript扩展接口，实现与内核层的通信，
中间件层，可以提供一些标准化的接口，以支持各种环境和系统的操作。例如，中间件层可以实现为与数据广播相关的中间件的多媒体和超媒体信息编码专家组(MHEG)，还可以实现为与外部设备通信相关的中间件的DLNA中间件，还可以实现为提供显示设备内各应用程序所运行的浏览器环境的中间件等。
内核层，提供核心系统服务，例如：文件管理、内存管理、进程管理、网络管理、系统安全权限管理等服务。内核层可以被实现为基于各种操作系统的内核，例如，基于Linux操作系统的内核。
内核层也同时提供系统软件和硬件之间的通信，为各种硬件提供设备驱动服务，例如：为显示器提供显示驱动程序、为摄像头提供摄像头驱动程序、为遥控器提供按键驱动程序、为WIFI模块提供WiFi驱动程序、为音频输出接口提供音频驱动程序、为电源管理(PM)模块提供电源管理驱动等。
用户接口265，接收各种用户交互。具体的，用于将用户的输入信号发送给控制器250，或者，将从控制器250的输出信号传送给用户。示例性的，遥控器100A可将用户输入的诸如电源开关信号、频道选择信号、音量调节信号等输入信号发送至用户接口265，再由用户接口265转送至控制器250；或者，遥控器100A可接收经控制器250处理从用户接口265输出的音频、视频或数据等输出信号，并且显示接收的输出信号或将接收的输出信号输出为音频或振动形式。
在一些实施例中，用户可在显示器275上显示的图形用户界面(GUI)输入用户命令，则用户接口265通过GUI接收用户输入命令。确切的说，用户接口265可接收用于控制选择器在GUI中的位置以选择不同的对象或项目的用户输入命令。
或者，用户可通过输入特定的声音或手势进行输入用户命令，则用户接口265通过传感器识别出声音或手势，来接收用户输入命令。
视频处理器270，用于接收外部的视频信号，根据输入信号的标准编解码协议，进行解压缩、解码、缩放、降噪、帧率转换、分辨率转换、图像合成等视频数据处理，可得到直接在显示器275上显示或播放的视频信号。
示例的，视频处理器270，包括解复用模块、视频解码模块、图像合成模块、帧率转换模块、显示格式化模块等。
其中，解复用模块，用于对输入音视频数据流进行解复用处理，如输入MPEG-2流(基于数字存储媒体运动图像和语音的压缩标准),则解复用模块将其进行解复用成视频信号和音频信号等。
视频解码模块，用于对解复用后的视频信号进行处理，包括解码和缩放处理等。
图像合成模块，如图像合成器，其用于将图形生成器根据用户输入或自身生成的GUI信号，与缩放处理后视频图像进行叠加混合处理，以生成可供显示的图像信号。
帧率转换模块，用于对输入视频的帧率进行转换，如将输入的60Hz视频的帧率转换为120Hz或240Hz的帧率，通常的格式采用如插帧方式实现。
显示格式化模块，用于将帧率转换模块输出的信号，改变为符合诸如显示器显示格式的信号，如将帧率转换模块输出的信号进行格式转换以输出RGB数据信号。
显示器275，用于接收源自视频处理器270输入的图像信号，进行显示视频内容、图像以及菜单操控界面。显示视频内容，可以来自调谐解调器210接 收的广播信号中的视频内容，也可以来自通信器220或外部装置接口240输入的视频内容。显示器275，同时显示显示设备200中产生且用于控制显示设备200的用户操控界面UI。
以及，显示器275可以包括用于呈现画面的显示屏组件以及驱动图像显示的驱动组件。或者，倘若显示器275为一种投影显示器，还可以包括一种投影装置和投影屏幕。
音频处理器280，用于接收外部的音频信号，根据输入信号的标准编解码协议，进行解压缩和解码，以及降噪、数模转换、和放大处理等音频数据处理，得到可以在扬声器286中播放的音频信号。
示例性的，音频处理器280可以支持各种音频格式。例如MPEG-2、MPEG-4、高级音频编码(AAC)、高效AAC(HE-AAC)等格式。
音频输出接口285，用于在控制器250的控制下接收音频处理器280输出的音频信号，音频输出接口285可包括扬声器286，或输出至外接设备的发生装置的外接音响输出端子287，如耳机输出端子。
在其他一些示例性实施例中，视频处理器270可以包括一个或多个芯片组成。音频处理器280，也可以包括一个或多个芯片组成。
以及，在其他一些示例性实施例中，视频处理器270和音频处理器280，可以为单独的芯片，也可以与控制器250一起集成在一个或多个芯片中。
供电电源290，用于在控制器250的控制下，将外部电源输入的电力为显示设备200提供电源供电支持。供电电源290可以是安装在显示设备200内部的内置电源电路，也可以是安装在显示设备200外部的电源。
在上述图1A-1D的基础上，需要说明的是：显示设备通常采用的显示屏为 液晶屏，液晶屏本身不会发光，其通过背光光源作用而点亮屏幕，以在屏幕上呈现图像。在这种情况下，显示设备通常采用多分区动态背光调制技术控制背光光源亮度，具体为显示设备屏幕的背光板上通常设置有多个灯条(背光光源)，一个灯条用于控制显示设备屏幕上一个区域的亮度。每个灯条的亮度可以由背光控制器独立控制，从而使得显示设备屏幕被划分为多个独立的分区，每个分区的明暗可独立控制，以更好的呈现图像。
图2示出了一种设置有背光控制MCU且由半导体激光器提供背光光源的背光控制示意图。基于该架构，开机后的背光控制过程包括：主控制器101基于抖色技术，生成用于背光控制的脉冲宽度调制(Pulse Width Modulation，PWM)信号以及每个灯条的亮度信息，并将PWM信号和各灯条的亮度信息发送给背光控制MCU 102，其中，各灯条的亮度信息采用串行外设接口(Serial Peripheral Interface，SPI)协议发送；背光控制MCU 102将处理后的PWM信号和各灯条的亮度信息进行整合、限幅等处理，并将处理后的各灯条的亮度信息发送给背光控制器103；背光控制器103根据各个灯条的亮度信息输出相应的PWM信号，通过PWM信号调整背光板104上相应灯条的电流大小，从而控制相应灯条的亮度，进而实现对相应屏幕分区的亮度控制。
根据图2，点亮显示设备屏幕(即开启显示设备屏幕背光)时，主控制器101给背光控制MCU 102上电，背光控制MUC 102启动背光控制器103进行初始化。主控制器101生成PWM信号和灯条亮度信息并输出给背光控制MCU 102，背光控制MUC 102对输入的PWM信号和灯条亮度信息进行整合处理的过程，与背光控制器103的初始化过程并行进行。这样，背光控制器103首先初始化完成，然后等背光控制MCU输出用于控制灯条亮度的PWM信号后即可 实现对灯条的亮度控制。由于背光控制器103的初始化完成在前，用于控制灯条亮度的PWM信号的输出在后，即背光控制器103的初始化和背光控制数据保持同步，背光控制数据满足背光控制器103要求的开屏时序，因此显示设备屏幕不会出现花屏现象。
在一些实施例中，图2中的主控制器101、MCU102、背光控制器103可以集成于一起，与图1C中的控制器250相对应。
图3示出了去除背光控制MCU且由半导体激光器提供背光光源的背光控制示意图。基于该架构，开机后的背光控制过程包括：主控制器201基于抖色技术，生成用于背光调节的PWM占空比值以及每个灯条的亮度信息，将PWM占空比值和各灯条的亮度信息中进行整合，得到整合后的各灯条的亮度信息，并采用SPI协议将整合后的各灯条的亮度信息发送给背光控制器202；背光控制器202根据各灯条的亮度信息输出相应的PWM信号，通过PWM信号调整背光板203上相应灯条的电流大小，从而控制相应灯条的亮度，进而实现对相应屏幕分区的亮度控制。
在上述实施例中，主控制器201依然可以输出PWM信号(图中用虚线表示)，但PWM信号处于悬空状态，即不会输出给背光控制器202。
根据图3，在正常开机的过程中，主控制器201给背光控制器202上电，使得背光控制器202开始进行初始化。主控制器201生成灯条亮度信息的过程，与背光控制器202的初始化过程并行进行。这样，背光控制器202首先初始化完成，然后等主控制器201输出灯条亮度信息后即可实现对灯条的亮度控制。由于背光控制器202的初始化完成在前，灯条亮度信息的输出在后，即背光控制器202的初始化和背光控制数据保持同步，背光控制数据满足背光控制器202 要求的开屏时序，因此显示设备屏幕不会出现花屏现象。
在一些实施例中，图3中的主控制器201和背光控制器202可以集成于一起，与图1C中的控制器250相对应。
目前的显示设备通常支持休眠至内存(Suspend to RAM，STR)快速开机功能，并且支持多种唤醒方式，比如支持Wi-Fi信号唤醒方式。在有些场景下，采用Wi-Fi信号唤醒方式唤醒显示设备时，出于上层业务逻辑的需要，要求显示设备被唤醒但显示设备屏幕不被点亮(即显示设备屏幕背光不被开启)，此后当用户按下显示设备遥控器的开机键或者通过其它方式向显示设备发送开机指令或者向显示设备发送需要播放的媒体文件时，显示设备屏幕才被点亮(即显示设备屏幕背光被开启)。
根据图3，如果采用Wi-Fi信号唤醒显示设备，则在显示设备被唤醒的过程中，主控制器201执行上述生成灯条亮度信息的过程。此后当用户按下显示设备遥控器的开机键(或以其它方式触发屏幕点亮)时，主控制器201给背光控制器202上电并将之前生成的灯条亮度信息输出给背光控制器202；背光控制器202上电后，主控制器201按照背光控制器202的时序要求，控制背光控制器202进行初始化。这样，灯条亮度信息的输出在前，背光控制器202的初始化完成在后，即背光控制器202的初始化和背光控制数据不同步，背光控制数据不满足背光控制器202要求的开屏时序，由于背光控制器202初始化还未完成，状态还不稳定，此时根据已接收到的灯条亮度信息进行背光控制，会导致显示设备屏幕出现短暂花屏，影响用户感受。
针对去除背光控制MCU的显示设备屏幕背光控制架构，为解决上述问题， 本申请实施例提供了一种背光控制方法及相关装置和设备。本申请实施例中，显示设备的主控制器在显示设备被唤醒时生成背光控制信息并将该背光控制信息进行缓存，当主控制器控制背光控制器点亮显示设备屏幕时，主控制器在确定背光控制器初始化完成后，将缓存的背光控制信息输出给背光控制器，以便背光控制器对显示设备屏幕背光进行控制。当显示设备被唤醒时屏幕不被点亮，后续再点亮显示设备屏幕时，采用本申请实施例可以避免屏幕短暂花屏现象。
下面结合附图对本申请实施例进行详细描述。
参见图4，为本申请实施例提供的背光控制流程示意图。该流程可适用于图2所示的显示设备背光控制架构，即该架构中不包括背光控制MCU。如图所示，该流程可包括：
S301：主控制器响应于显示设备被唤醒，生成背光控制信息并缓存所述背光控制信息。
该步骤中，当显示设备被唤醒，比如采用Wi-Fi信号被唤醒时，主控制器可以响应该显示设备唤醒事件，生成背光控制信息，并缓存该背光控制信息。
其中，所述背光控制信息可包括至少一个灯条的亮度信息。显示设备背光板上可设置有多个灯条，以便实现对显示设备屏幕进行分区亮度控制。具体实施时，所述背光控制信息可包括每个灯条的亮度信息，可将每个灯条的亮度信息缓存为队列形式。图5示例性地示出了一种缓存为队列形式的灯条亮度信息。其中，灯条亮度信息可存储为符合SPI协议的数据结构。
需要说明的是，本实施例中，当显示设备被唤醒时，显示设备屏幕保持背光关闭，即显示设备屏幕不被点亮。
S302：主控制器启动背光控制器，使得所述背光控制器进行初始化。
其中，主控制器可向背光控制器输出启动信号或为背光控制器提供电源电压，以启动背光控制器。
这里，主控制器可响应于背光开启，启动背光控制器。举例来说，当显示设备被唤醒时可不点亮屏幕，后续在接收到背光开启的指令或用于触发背光开启的事件后，再开启显示设备屏幕背光。比如，当用户按显示设备遥控器上的开关键，开启显示设备时，显示设备遥控器向显示设备发送指令，以开启显示设备屏幕背光；再比如，当用户通过移动终端向显示设备发送媒体播放请求，以请求显示设备播放相应的媒体文件时，可触发显示设备开启背光。
S303：主控制器响应于所述背光控制器初始化完成，将所述背光控制信息输出给所述背光控制器，使得所述背光控制器根据所述背光控制信息对显示设备屏幕背光进行控制。
该步骤中，背光控制器被启动后首先进行初始化，主控制器判断背光控制器的初始化是否完成，若判断背光控制器的初始化完成，则将缓存的背光控制信息输出该背光控制器。
在本申请某些实施例中，背光控制器可使用SPI协议，将背光控制信息输出给背光控制器。
在本申请某些实施例中，S303中，主控制器可以采用以下方式确定背光控制器是否初始化完成：主控制器获取背光控制器的工作状态指示信息，根据该工作状态指示信息确定背光控制器是否初始化完成。背光控制器在初始化过程中，其工作状态为非正常工作状态(比如可能是复位状态或其它工作状态)，初始化完成后，其工作状态变为正常工作状态。背光控制器中包括多个寄存器， 其中部分寄存器用于记录背光控制器的工作状态，当背光控制器的工作状态发生变化时，可将相应的工作状态指示信息写入该寄存器，即通过读取该寄存器可得知背光控制器当前的工作状态。
在本申请某些实施例中，用于记录背光控制器工作状态的寄存器所存储的比特序列中，不同位置的一个或多个比特可能表示不同的含义，比如，其中的高位3个比特的取值表示背光控制器的工作状态。相应地，在S303中，主控制器可以读取背光控制器中用于标识工作状态的寄存器的比特序列，并读取该比特序列中指定位置的子序列的数值，其中，该指定位置的子序列的取值用于指示背光控制器的工作状态。
在本申请某些实施例中，在S301中，主控制器响应于显示设备采用指定唤醒模式被唤醒，生成背光控制信息并缓存所述背光控制信息。其中，所述显示设备采用指定唤醒模式被唤醒时显示设备屏幕背光不被开启，当接收到背光开启指令后所述显示设备屏幕背光被开启。具体地，当显示设备被唤醒时，主控制器确定所采用的唤醒模式，若所采用的唤醒模式为上述指定唤醒模式，则主控制器按照前述方式生成背光控制信息并缓存该背光控制信息；若主控制器确定所采用的唤醒模式不是上述指定唤醒模式，则可以按照常规方式进行处理，比如，生成背光控制信息，给背光控制器上电(即启动背光控制器)并将生成的背光控制信息输出给背光控制器。
其中，主控制器可根据唤醒信号的类型或者唤醒指令的来源，确定唤醒模式，比如，如果显示设备内部的Wi-Fi模块接收到用于唤醒显示设备的信号，则可触发主控制器采用上述指定唤醒模式进行唤醒。
在本申请某些实施例中，在S301中，主控制器生成背光控制信息的过程可以包括：针对显示设备屏幕背光板上设置的灯条，生成至少一个灯条的亮度信息；生成用于背光控制的PWM占空比值；根据所述至少一个灯条的亮度信息以及所述PWM占空比值，得到所述背光控制信息。
在本申请某些实施例中，在S301中，主控制器根据所述至少一个灯条的亮度信息以及所述PWM占空比值，得到所述背光控制信息的过程可以包括：将所述至少一个灯条的亮度信息与所述PWM占空比值进行处理，得到所述背光控制信息。其中，所述处理包括：将所述至少一个灯条的亮度信息与所述PWM占空比值进行整合，对整合后的灯条控制信息进行限幅处理。
图6示例性地示出了一种主控制器生成背光控制信息的过程。图6以背光板上设置有16个灯条以将显示设备屏幕划分为16个分区为例，描述主控制器的背光控制信息生成和处理过程。如图6所示，该过程可包括：
S510：获得灯条亮度信息。本例子中，由于有16个灯条，对应于显示设备屏幕的16个分区，因此获得16个分区的本地调光数据(local dimming数据)。具体实施时，可由内核(kernel)生成本地调光数据(local dimming数据)，主控制器可从数据的分离文件中，独权不同分区的配置数据，获得16个分区的本地调光数据(local dimming数据)。
S511：对本地调光数据进行异常数据处理，已去除异常数据。
S512：对异常数据处理后的本地调光数据进行平均处理或滤波处理。
S513：对平均或滤波处理后的本地调光数据进行调光(dimming)平滑过渡处理。
S514：对平滑过渡处理后的本地调光数据进行限幅处理。
S520：获得PWM占空比值。PWM占空比值可根据基础背光以及光感产生。具体实施时，可由中间件生成PWM占空比值。
S521：对PWM占空比值进行定标处理。
S522：对定标后的PWM占空比值进行异常数据处理。
S523：对异常数据处理后的PWM占空比值进行PWM平滑过渡处理。
S524：对平滑过渡处理后的PWM占空比值进行限幅处理。
S530～S531：将S514处理后的本地调光数据和S524处理后的PWM占空比值进行整合，并对整合后的数据进行限幅处理，得到16个灯条对应的亮度信息。该亮度信息可先被缓存，待背光控制器初始化完成后，将该亮度信息输出给背光控制器。
需要说明的是，图6所示的流程中，生成灯条亮度信息以及后续对灯条亮度信息的处理过程，与生成PWM占空比值以及后续对该值的处理过程，可以并行执行。
在一些实施例中，上述图6所示的流程中，调光(dimming)平滑过渡处理的过程中，在图像亮度变化时，每个分区调光(diming)值在每个帧(frame)的时间间隔下按照一定的步长(step)进行加或者是减，调优后设置的步长(step)为3，从而保证亮度均匀变化。由于本地调光(local diming)数据为8bit，PWM占空比(PWM duty)数据为8bit，PWM duty将作为一个全局增益(global gain)值乘以各个分区的亮度信息，并将所得数据转化为背光控制器(如背光控制器)所需的12bit，从而对背光控制数据和本地调光(local dimming)数据进行合成，输入给背光控制器以便对背光进行控制。
在一些实施例中，上述图6所示的流程中，进行PWM平滑处理时，首先将实时动态刷新数据与上一执行周期中的备份数据进行比较，如果动态刷新数据与备份数据之差大于或等于设定的阈值，则以设定的步长步进到动态亮度值，如果动态刷新的数据与备份数据之差小于设定的阈值，则保持此次的动态刷新数据。比如，可以按照取值为1的步长对背光亮度进行加或减。
图7示例性地示出了一种平滑过渡处理过程。如图7所示，该过程可包括：
S601：判断实时动态刷新数据是否大于或等于上一执行周期中的备份数据，若是，则转入S602，否则转入S605。
S602：判断实时动态刷新数据减去上一执行周期中的备份数据所得到的差值是否大于设定值STEP_CNST，若是，则转入S603，否则转入S604。
S603：将当前背光亮度设置为上一执行周期中的备份数据与设定值STEP_CNST之和，并转入S608。
S604：将当前背光亮度设置为与实时动态刷新数据相等，并转入S608。
S605：判断上一执行周期中的备份数据减去实时动态刷新数据所得到的差值是否大于设定值STEP_CNST，若是，则转入S606，否则转入S607。
S606：将当前背光亮度设置为上一执行周期中的备份数据减去设定值STEP_CNST所得到的差值，并转入S608。
S607：将当前背光亮度设置为与实时动态刷新数据相等，并转入S608。
S608：备份当前执行周期的实时动态刷新数据。
通过以上描述可以看出，主控制器生成背光控制信息后，首先缓存该背光控制信息，当确定背光控制器初始化完成后，再将背光控制信息输出给背光控 制器，这样，由于背光控制器的初始化完成在前，灯条亮度信息的输出在后，即背光控制器的初始化和背光控制数据保持同步，背光控制数据满足背光控制器要求的开屏时序，因此显示设备屏幕不会出现花屏现象。
尤其在采用上述指定唤醒模式唤醒显示设备的过程中，由于显示设备被唤醒时显示设备屏幕背光不被开启，因此背光控制信息首先生成，当后续开启显示设备屏幕背光时，若立即将背光控制信息输出给背光控制器，则可能因背光控制器尚未初始化完成，背光控制数据不用满足背光控制器要求的开屏时序，因此导致显示设备屏幕出现花屏现象。而采用本申请实施例，主控制器在确定背光控制器初始化完成后，再将背光控制信息输出给背光控制器，可以保证背光控制数据满足背光控制器要求的开屏时序，因此显示设备屏幕不会出现花屏现象。
需要说明的是，本申请的上述实施例仅示例性给出了与背光控制流程中的主要步骤，在实际应用中，根据所使用的主控制器和背光控制器的种类或型号，背光控制流程中可能还包括一些其它的处理过程。
下面基于上述实施例，并结合一具体场景，说明本申请实施例的具体实现过程。
图8示例性地示出了一种主控制器和背光控制器的连接示意图。
主控制器的GPIO(General-purpose input/output，通用输入输出)口与背光控制器的GPIO口连接。如图所示，主控制器的Vsync口，VIN口，PLL口(时钟口)，SPI协议相关接口(如图中的CSB口、SCK口、MOSI口、MISO 口等)与背光控制器对应的口连接。Vsync口用于实现同步，VIN口用于为背光控制器提供供电电压，SPI协议相关接口用于实现与背光控制器进行信息交互。
基于图8，图9示出了背光控制器的初始化流程，如图所示，该流程可包括：
S81：主控制器为背光控制器上电。
该步骤中，主控制器中缓存有生成的背光控制信息，该背光控制信息是主控制器在显示设备被唤醒时生成的。当主控制器接收到用户通过遥控器发送的开机指令后，首先将GPIO接口电平拉高，使背光控制器上电开始进行初始化，同时主控制器控制Vsync信号处于低电平状态。
S82：主控制器等待背光控制器初始化，大约需8ms。
满足背光控制器上电的时序要求，背光控制器电路稳定，VIN(输入电压)的电压大于7伏，测试需要的时间长度约为8ms，因此主控制器需要等待约8ms时间，以等待背光控制器进行初始化。
S83：主控制器检查背光控制器的SPI配置，以确认SPI通信正常。
该步骤中，主控制器向背光控制器的0x00寄存器写入0x06(参见图中S831)，然后读取背光控制器的0x00寄存器(参见图中S832)；若0x00寄存器的值为0x06，则表明背光控制器SPI配置正常，并转入S84，否则表明背光控制器SPI配置异常，若配置异常，则可以重复执行SPI配置检查过程，直到背光控制器的SPI配置正常(请参见图中的S833)。
S84：主控制器配置背光控制器的寄存器。
该步骤中，主控制器将配置好的分区数据写入背光控制器的寄存器：0x00～0x39和0x40～0x65。主控制器还控制PWM信号，以满足背光控制器的 要求。
S85：主控制器提供稳定的Vsync脉冲信号，脉冲信号满足Vsync信号的最小脉宽要求，即大于20us。
S86：主控制器等待灯条PSU(power supply unit，电源提供单元)稳定以及背光控制器内部时钟稳定。
该步骤中，主控制器等待灯条电源稳定和背光控制器内部时钟稳定。如果背光控制器选择的是PLL(PhaseLockedLoop，锁相环)时钟工作方式，则同时需要等待内部PLL稳定，内部PLL时钟稳定的时间长度约为500ms。如果背光控制器选择OSC(oscillator，振荡器)或者外部时钟(External CLK)，则主控制器只需要等灯条电源输出电压稳定。
系统设计默认等待50ms，灯条电源稳定后，执行后续操作。
S87：主控制器开始对背光控制器进行校准判决。
该步骤中，当灯条电源稳定后，背光控制器退出复位状态。退出复位状态后，设置的寄存器值开始生效。主控制器将背光控制器的0x00寄存器的bit0设置为1，开始对背光控制器进行校准完成判决。
S88：主控制器对背光控制器进行校准完成判决。
该过程中，主控制器指定读取寄存器范围为>＝0x80，设置0x78寄存器的bit7＝1(参见图中S881)；主控制器读取0xB3寄存器(参见图中S882)；主控制器根据0xB3寄存器的值判断背光控制器是否完成校准，若完成校准，则主控制器指定读取寄存器范围为<0x80，设置0x78寄存器的bit7＝0(参见图中S884)，否则转入S882，以重复执行校准完成判决(参见图中S883)。
其中，当背光控制器完成校准进入正常工作状态后，会标识0xB3寄存器。 0xB3寄存器的定义如下：
(1)当U0_ST[3:0]＝0x5时，则表示第一路DCDC电源(FB1连接的DCDC电路)供电的通道已经进入正常工作状态。
(2)当U1_ST[3:0]＝0x5时，则表示第二路DCDC电源(FB2连接的DCDC电路)供电的通道已经进入正常工作状态。
S89：背光控制器进入OTF(on the fly)状态，即进入工作状态，校准完成，主控制器向背光控制器写入缓存的背光控制信息。
在一些场景下，在关闭显示设备屏幕后再开启显示设备屏幕时，需要：SW信号和Vsync信号的时序是在SW信号被拉高时Vsync信号要保证低电平，否则会出现开屏后屏闪的现象。为解决上述问题，本申请的一些实施例中，主控制器可在接收显示设备屏幕关闭的信号后，将Vsync信号强制拉低。
基于相同的技术构思，本申请实施例还提供了一种显示设备的屏幕背光控制装置，该控制装置可以是前述实施例中的主控制器。
如图10所示，该装置可包括：背光控制信息生成模块901、背光控制器控制模块902、背光控制信息输出模块903。
背光控制信息生成模块901，用于响应于显示设备被唤醒，生成背光控制信息并缓存所述背光控制信息。背光控制器控制模块902，用于启动背光控制器，使得所述背光控制器进行初始化。背光控制信息输出模块903，用于响应于所述背光控制器初始化完成，将所述背光控制信息输出给所述背光控制器，使得所述背光控制器根据所述背光控制信息对显示设备屏幕背光进行控制。
在本申请某些实施例中，背光控制器控制模块902具体用于：响应于背光 开启，启动所述背光控制器。
在本申请某些实施例中，背光控制信息输出模块903具体用于：获取所述背光控制器的工作状态指示信息；若所述背光控制器的工作状态指示信息所指示的工作状态为初始化完成，则将所述背光控制信息输出给所述背光控制器。
在本申请某些实施例中，背光控制信息输出模块903具体用于：读取所述背光控制器中用于标识工作状态的寄存器的比特序列，并读取所述比特序列中指定位置的子序列的数值，所述指定位置的子序列的取值用于指示所述背光控制器的工作状态。
在本申请某些实施例中，背光控制信息生成模块901具体用于：针对述显示设备屏幕背光板上设置的灯条，生成至少一个灯条的亮度信息；生成用于背光控制的PWM占空比值；根据所述至少一个灯条的亮度信息以及所述PWM占空比值，得到所述背光控制信息。
在本申请某些实施例中，背光控制信息生成模块901具体用于：将所述至少一个灯条的亮度信息与所述PWM占空比值进行处理，得到所述背光控制信息，其中，所述处理包括：将所述至少一个灯条的亮度信息与所述PWM占空比值进行整合，对整合后的灯条控制信息进行限幅处理。
在本申请某些实施例中，背光控制信息生成模块901具体用于：响应于显示设备采用指定唤醒模式被唤醒，生成背光控制信息并缓存所述背光控制信息；其中，所述显示设备采用指定唤醒模式被唤醒时显示设备屏幕背光不被开启。
基于相同的技术构思，本申请实施例还提供了一种显示设备，该显示设备可包括：显示屏、背光光源、主控制器和背光控制器。其中，主控制器可实现 本申请前述实施例中主控制器的功能，背光控制器可实现本申请前述实施例中背光控制器的功能。
本申请实施例中，该显示设备所涉及的与本申请实施例提供的技术方案相关的概念，解释和详细说明及其他步骤请参见前述方法实施例中关于这些内容的描述，此处不做赘述。
尽管已描述了本申请的优选实施例，但本领域内的技术人员一旦得知了基本创造性概念，则可对这些实施例作出另外的变更和修改。所以，所附权利要求意欲解释为包括优选实施例以及落入本申请范围的所有变更和修改。
显然，本领域的技术人员可以对本申请实施例进行各种改动和变型而不脱离本申请实施例的精神和范围。这样，倘若本申请实施例的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。

Claims (21)

  1. 一种显示设备，其特征在于，包括：
    屏幕；
    背光光源，用于为屏幕提供背光；
    主控制器，用于执行：
    响应于显示设备被唤醒的指令，生成背光控制信息并缓存所述背光控制信息；启动背光控制器，使得所述背光控制器进行初始化；以及，响应于所述背光控制器初始化完成，将所述背光控制信息输出给所述背光控制器，使得所述背光控制器根据所述背光控制信息对背光光源进行控制；
    背光控制器，用于执行：
    响应于所述主控制器的启动控制，进行初始化；以及，响应于所述主控制器输出的背光控制信息，对背光光源进行控制。
  2. 如权利要求1所述的显示设备，其特征在于，所述启动背光控制器，包括：
    所述主控制器响应于背光开启，启动所述背光控制器。
  3. 如权利要求1所述的显示设备，其特征在于，所述响应于所述背光控制器初始化完成，将所述背光控制信息输出给所述背光控制器，包括：
    所述主控制器获取所述背光控制器的工作状态指示信息；
    若所述背光控制器的工作状态指示信息所指示的工作状态为初始化完成，则所述主控制器将所述背光控制信息输出给所述背光控制器。
  4. 如权利要求3所述的显示设备，其特征在于，所述主控制器获取所述背光控制器的工作状态信息，包括：
    所述主控制器读取所述背光控制器中用于标识工作状态的寄存器的比特序列，并读取所述比特序列中指定位置的子序列的数值，所述指定位置的子序列的取值用于指示所述背光控制器的工作状态。
  5. 如权利要求1所述的显示设备，其特征在于，所述生成背光控制信息，包括：
    针对所述显示设备屏幕背光板上设置的灯条，生成至少一个灯条的亮度信息；
    生成用于背光控制的脉冲宽度调制PWM占空比值；
    根据所述至少一个灯条的亮度信息以及所述PWM占空比值，得到所述背光控制信息。
  6. 如权利要求5所述的显示设备，其特征在于，所述根据所述至少一个灯条的亮度信息以及所述PWM占空比值，得到所述背光控制信息，包括：
    将所述至少一个灯条的亮度信息与所述PWM占空比值进行处理，得到所述背光控制信息，其中，所述处理包括：
    将所述至少一个灯条的亮度信息与所述PWM占空比值进行整合；
    对整合后的灯条控制信息进行限幅处理。
  7. 如权利要求1-6中任一项所述的显示设备，其特征在于，所述响应于显示设备被唤醒的指令，生成背光控制信息并缓存所述背光控制信息，包括：
    所述主控制器响应于显示设备采用指定唤醒模式被唤醒，生成背光控制信息并缓存所述背光控制信息；
    其中，所述显示设备采用指定唤醒模式被唤醒时显示设备屏幕背光不被开启。
  8. 一种显示设备的屏幕背光控制方法，其特征在于，包括：
    主控制器响应于显示设备被唤醒的指令，生成背光控制信息并缓存所述背光控制信息；
    所述主控制器启动背光控制器，使得所述背光控制器进行初始化；
    所述主控制器响应于所述背光控制器初始化完成，将所述背光控制信息输出给所述背光控制器，使得所述背光控制器根据所述背光控制信息对显示设备屏幕背光进行控制。
  9. 如权利要求8所述的方法，其特征在于，所述主控制器启动背光控制器，包括：
    所述主控制器响应于背光开启，启动所述背光控制器。
  10. 如权利要求8所述的方法，其特征在于，所述主控制器响应于所述背光控制器初始化完成，将所述背光控制信息输出给所述背光控制器，包括：
    所述主控制器获取所述背光控制器的工作状态指示信息；
    若所述背光控制器的工作状态指示信息所指示的工作状态为初始化完成，则所述主控制器将所述背光控制信息输出给所述背光控制器。
  11. 如权利要求10所述的方法，其特征在于，所述主控制器获取所述背光控制器的工作状态信息，包括：
    所述主控制器读取所述背光控制器中用于标识工作状态的寄存器的比特序列，并读取所述比特序列中指定位置的子序列的数值，所述指定位置的子序列的取值用于指示所述背光控制器的工作状态。
  12. 如权利要求8所述的方法，其特征在于，所述生成背光控制信息，包括：
    针对述显示设备屏幕背光板上设置的灯条，生成至少一个灯条的亮度信息；
    生成用于背光控制的脉冲宽度调制PWM占空比值；
    根据所述至少一个灯条的亮度信息以及所述PWM占空比值，得到所述背光控制信息。
  13. 如权利要求12所述的方法，其特征在于，所述根据所述至少一个灯条的亮度信息以及所述PWM占空比值，得到所述背光控制信息，包括：
    将所述至少一个灯条的亮度信息与所述PWM占空比值进行处理，得到所述背光控制信息，其中，所述处理包括：
    将所述至少一个灯条的亮度信息与所述PWM占空比值进行整合；
    对整合后的灯条控制信息进行限幅处理。
  14. 如权利要求8-13中任一项所述的方法，其特征在于，所述主控制器响应于显示设备被唤醒的指令，生成背光控制信息并缓存所述背光控制信息，包括：
    所述主控制器响应于显示设备采用指定唤醒模式被唤醒的指令，生成背光控制信息并缓存所述背光控制信息；
    其中，所述显示设备采用指定唤醒模式被唤醒时显示设备屏幕背光不被开启。
  15. 一种显示设备的屏幕背光控制装置，其特征在于，包括：
    背光控制信息生成模块，用于响应于显示设备被唤醒的指令，生成背光控制信息并缓存所述背光控制信息；
    背光控制器控制模块，用于启动背光控制器，使得所述背光控制器进行初始化；
    背光控制信息输出模块，用于响应于所述背光控制器初始化完成，将所述背光控制信息输出给所述背光控制器，使得所述背光控制器根据所述背光控制信息对显示设备屏幕背光进行控制。
  16. 如权利要求15所述的装置，其特征在于，所述背光控制器控制模块具体用于：响应于背光开启，启动所述背光控制器。
  17. 如权利要求15所述的装置，其特征在于，所述背光控制信息输出模块具体用于：获取所述背光控制器的工作状态指示信息；若所述背光控制器的工作状态指示信息所指示的工作状态为初始化完成，则将所述背光控制信息输出给所述背光控制器。
  18. 如权利要求17所述的装置，其特征在于，所述背光控制信息输出模块具体用于：读取所述背光控制器中用于标识工作状态的寄存器的比特序列，并读取所述比特序列中指定位置的子序列的数值，所述指定位置的子序列的取值用于指示所述背光控制器的工作状态。
  19. 如权利要求15所述的装置，其特征在于，所述背光控制信息生成模块具体用于：针对所述显示设备屏幕背光板上设置的灯条，生成至少一个灯条的亮度信息；生成用于背光控制的PWM占空比值；根据所述至少一个灯条的亮度信息以及所述PWM占空比值，得到所述背光控制信息。
  20. 如权利要求19所述的装置，其特征在于，所述背光控制信息生成模块具体用于：将所述至少一个灯条的亮度信息与所述PWM占空比值进行处理，得到所述背光控制信息，其中，所述处理包括：将所述至少一个灯条的亮度信息与所述PWM占空比值进行整合，对整合后的灯条控制信息进行限幅处理。
  21. 如权利要求15-20中任一项所述的装置，其特征在于，所述背光控制 信息生成模块具体用于：响应于显示设备采用指定唤醒模式被唤醒，生成背光控制信息并缓存所述背光控制信息；其中，所述显示设备采用指定唤醒模式被唤醒时显示设备屏幕背光不被开启。
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115394260A (zh) * 2022-08-23 2022-11-25 昆山龙腾光电股份有限公司 液晶显示的方法、装置、计算机设备及存储介质
CN115484703A (zh) * 2022-10-31 2022-12-16 歌尔股份有限公司 遥控器背光控制方法、装置、遥控器及介质

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11107423B2 (en) 2019-06-27 2021-08-31 Hisense Visual Technology Co., Ltd. Method and device for controlling backlight, and display device
CN110277069B (zh) * 2019-06-27 2021-09-14 广东海信电子有限公司 一种电视屏幕背光控制方法、装置及电视
CN111243532B (zh) * 2020-01-16 2022-03-22 聚好看科技股份有限公司 一种背光控制方法及显示设备
CN113163140B (zh) * 2020-01-22 2023-05-09 海信视像科技股份有限公司 显示装置
CN111462702B (zh) * 2020-04-21 2022-08-02 海信视像科技股份有限公司 显示设备背光控制方法及显示设备
CN113763894B (zh) * 2021-09-30 2023-07-14 深圳市皓丽软件有限公司 区域控光电路自检复位方法及系统

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11344957A (ja) * 1998-06-01 1999-12-14 Canon Inc 表示部を備えた装置
CN101252659A (zh) * 2007-02-25 2008-08-27 青岛海信电器股份有限公司 电视机的待机和整机上电管理方法及电路
US20090115767A1 (en) * 2007-11-02 2009-05-07 Novatek Microelectronics Corp. Power-saving mechanism of display and control method using the same
US20100117949A1 (en) * 2008-11-10 2010-05-13 Wistron Corp. Control method for backlight module of lcd and application thereof
CN103366702A (zh) * 2013-06-13 2013-10-23 Tcl通讯（宁波）有限公司 一种待机时lcd快速响应的方法及移动终端
CN105469768A (zh) * 2016-01-15 2016-04-06 京东方科技集团股份有限公司 显示模组的控制装置及控制方法、显示装置
CN109377951A (zh) * 2018-10-31 2019-02-22 惠科股份有限公司 一种驱动电路、显示模组的驱动方法及显示模组
CN110277069A (zh) * 2019-06-27 2019-09-24 青岛海信电器股份有限公司 一种电视屏幕背光控制方法、装置及电视

Family Cites Families (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR950005225B1 (ko) * 1991-03-26 1995-05-22 가부시끼가이샤 히다찌세이사꾸쇼 데이타 처리장치, 전원 콘트롤러 및 디스플레이 장치
GB9113924D0 (en) * 1991-06-27 1991-08-14 Thomson Consumer Electronics Fault protection using microprocessor power up reset
US6388388B1 (en) * 2000-12-27 2002-05-14 Visteon Global Technologies, Inc. Brightness control system and method for a backlight display device using backlight efficiency
CN1797529A (zh) * 2004-12-25 2006-07-05 群康科技(深圳)有限公司 主动矩阵液晶显示面板的驱动方法
US7742032B2 (en) * 2004-12-31 2010-06-22 Intel Corporation Image adaptation phase-in
TWI342002B (en) * 2006-03-16 2011-05-11 Novatek Microelectronics Corp Apparatus and method for display backlight control
CN101083053A (zh) * 2006-05-31 2007-12-05 比亚迪股份有限公司 一种背光源用三色发光二极管的亮度控制方法和电路
US8870812B2 (en) * 2007-02-15 2014-10-28 Baxter International Inc. Dialysis system having video display with ambient light adjustment
JP4924468B2 (ja) * 2007-05-29 2012-04-25 株式会社デンソーウェーブ 二次元コードの生成方法およびその読取装置
US8624505B2 (en) * 2010-05-28 2014-01-07 Tsmc Solid State Lighting Ltd. Light color and intensity adjustable LED
CN102768823B (zh) * 2011-05-04 2015-09-16 上海中航光电子有限公司 背光控制方法、装置和3d显示系统
CN102222486B (zh) * 2011-06-09 2013-06-26 深圳市英威腾电源有限公司 一种显示控制方法和显示设备
US8779696B2 (en) * 2011-10-24 2014-07-15 Advanced Analogic Technologies, Inc. Low cost LED driver with improved serial bus
CN103050095A (zh) * 2013-01-06 2013-04-17 青岛海信电器股份有限公司 一种背光驱动方法和背光模组、电视机
CN103149789B (zh) * 2013-02-28 2015-08-26 宁波舜宇光电信息有限公司 基于图像mtf评价模组马达曲线的测试方法
KR102031580B1 (ko) * 2013-05-10 2019-11-08 엘지디스플레이 주식회사 표시 장치, 표시 장치 제어 방법
CN103324163A (zh) * 2013-05-24 2013-09-25 上海申腾信息技术有限公司 一种可视可控无线智能监控器
CN104332140B (zh) * 2014-10-28 2017-04-19 深圳创维－Rgb电子有限公司 用于区域调光的背光驱动系统及区域调光方法
JP6575113B2 (ja) * 2015-04-02 2019-09-18 船井電機株式会社 表示装置
CN105302548B (zh) * 2015-09-24 2019-02-12 深圳Tcl数字技术有限公司 安卓设备的待机、唤醒方法及装置
CN105118474B (zh) * 2015-10-16 2017-11-07 青岛海信电器股份有限公司 液晶显示亮度控制方法和装置以及液晶显示设备
CN105632414B (zh) * 2016-01-12 2018-07-03 青岛海信电器股份有限公司 一种终端设备开机过程中的背光控制方法、装置及设备
CN105590590A (zh) * 2016-03-09 2016-05-18 深圳市华星光电技术有限公司 适应不同液晶面板的背光亮度自动调整系统及液晶显示器
CN109743616B (zh) * 2016-05-30 2021-05-25 海信视像科技股份有限公司 一种智能电视的待机及唤醒方法及装置
KR101930046B1 (ko) * 2016-12-30 2018-12-17 화남전자 주식회사 Lcd 디스플레이의 번쩍임 방지 시스템
CN106658194B (zh) * 2017-01-03 2019-09-17 青岛海信电器股份有限公司 一种电视快速开机方法及装置
CN108877688A (zh) * 2017-05-12 2018-11-23 京东方科技集团股份有限公司 背光亮度控制方法及装置
CN107085344B (zh) * 2017-05-19 2020-02-18 南京信息工程大学 一种全自动设置成像系统中背光的智能装置及方法
CN107967898B (zh) * 2017-11-01 2020-12-29 昆山龙腾光电股份有限公司 背光调节电路以及背光调节方法
CN108182912B (zh) * 2018-02-07 2020-07-10 深圳创维－Rgb电子有限公司 调整背光亮度的方法、装置、设备和存储介质
CN108447454B (zh) * 2018-02-23 2020-06-05 广州视源电子科技股份有限公司 一种显示屏时序控制方法、装置、终端设备和存储介质
CN108897578B (zh) * 2018-06-20 2021-06-29 海信视像科技股份有限公司 开机点屏方法及装置
CN109388431A (zh) * 2018-09-19 2019-02-26 深圳创维汽车智能有限公司 车载系统的屏幕唤醒方法、装置和存储介质
CN109377952B (zh) * 2018-11-12 2020-05-26 惠科股份有限公司 一种显示装置的驱动方法、显示装置和显示器
CN109637461B (zh) * 2018-12-20 2020-07-07 深圳创维－Rgb电子有限公司 一种mini LED电视控制系统及方法

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11344957A (ja) * 1998-06-01 1999-12-14 Canon Inc 表示部を備えた装置
CN101252659A (zh) * 2007-02-25 2008-08-27 青岛海信电器股份有限公司 电视机的待机和整机上电管理方法及电路
US20090115767A1 (en) * 2007-11-02 2009-05-07 Novatek Microelectronics Corp. Power-saving mechanism of display and control method using the same
US20100117949A1 (en) * 2008-11-10 2010-05-13 Wistron Corp. Control method for backlight module of lcd and application thereof
CN103366702A (zh) * 2013-06-13 2013-10-23 Tcl通讯（宁波）有限公司 一种待机时lcd快速响应的方法及移动终端
CN105469768A (zh) * 2016-01-15 2016-04-06 京东方科技集团股份有限公司 显示模组的控制装置及控制方法、显示装置
CN109377951A (zh) * 2018-10-31 2019-02-22 惠科股份有限公司 一种驱动电路、显示模组的驱动方法及显示模组
CN110277069A (zh) * 2019-06-27 2019-09-24 青岛海信电器股份有限公司 一种电视屏幕背光控制方法、装置及电视

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115394260A (zh) * 2022-08-23 2022-11-25 昆山龙腾光电股份有限公司 液晶显示的方法、装置、计算机设备及存储介质
CN115394260B (zh) * 2022-08-23 2023-07-25 昆山龙腾光电股份有限公司 液晶显示的方法、装置、计算机设备及存储介质
CN115484703A (zh) * 2022-10-31 2022-12-16 歌尔股份有限公司 遥控器背光控制方法、装置、遥控器及介质

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