86results about How to "Avoid black screen" patented technology

The invention relates to a method for dynamically identifying and configuring an external display. An external video graphics array (VGA) display is detected actively and regularly, so that a working mode of a display card is reconfigured according to the optimal resolution and the refresh rate of the current display. In the method, extended display identification data (EDID) information stored in the current display is detected regularly, so that whether the current display is changed can be determined through correctness detection and difference comparison; if the current display is different from the previous display, the optimal resolution and the refresh rate which are stored in the EDID of the current display are resolved immediately; and then the working mode of the display card can be reconfigured according to the new resolution and the refresh rate, so that the problem that a user changes the VGA display through hot plug, so that the resolution of the display cannot be automatically adjusted to be the optimal mode or the problem that an output of the display card exceeds a resolution value range, so that the display has a black screen and outputs abnormally can be solved.

The invention discloses a method for preventing a sticking film from affecting normal working of a proximity transducer. The method comprises the following steps: detecting whether a current touch screen is provided with the sticking film or not, detecting an infrared strength value of the proximity transducer when the proximity transducer is not shielded by objects, judging whether the infrared strength value is in the normal range or not, if it is detected that the current touch screen is provided with the sticking film and the infrared strength value of the proximity transducer exceeds the normal range when the proximity transducer is not shielded by the objects, judging that the sticking film affects the normal working of the proximity transducer, and reminding a user. According to the method for preventing the sticking film from affecting the normal working of the proximity transducer, whether the sticking film affects the normal working of the proximity transducer or not is judged by monitoring whether the touch screen is provided with the sticking film or not and monitoring whether the infrared strength value exceeds the normal range or not when the proximity transducer is not shielded by the objects, the user is timely reminded, and the blank screen phenomenon caused by the sticking film on the mobile phone screen is prevented from appearing. The invention further provides a device for preventing the sticking film from affecting the normal working of the proximity transducer.

The invention discloses an over-current protection circuit and a display panel. The over-current protection circuit includes: a current detection unit, which detects output current of a clock signal and outputs a prompt signal if the output current of the clock signal is abnormal; and a countering unit, which is coupled to the current detection unit, counts the frequency of reception of the prompt signal and outputs a control signal if the frequency of reception of the prompt signal is higher than a preset threshold so that a gate driving chip is turned off, wherein the preset threshold is greater than one. Through the above way, a black screen caused by an over-current protection mechanism triggered by mistake by external interference is avoided, and the over-current protection accuracy is improved.

The invention provides an automobile, an automobile instrument and a control method thereof. The automobile instrument comprises a micro control unit MCU, a central processor CPU, a display processor and a display screen; the MCU is respectively connected with the CPU and the display processor; the display processor is also connected with the CPU and the display screen; when the MCU judges that the CPU has no fault, the MCU transmits vehicle information to the CPU, the display processor transmits a decoded backing video signal to the CPU, and the CPU generates main display information according to the vehicle information and the backing video signal and drives the display screen to display the main display information through the display processor; and when the MCU judges that the CPU has a fault, the MCU transmits the vehicle information to the display processor, and the display processor generates backup display information according to the vehicle information and the backing video signal and drives the display screen to display the backup display information. According to the automobile, the automobile instrument and the control method thereof, two display modes are provided so that a problem of blank screen of the display screen of the automobile instrument in the related technologies can be solved and the driving safety can be enhanced.

The invention discloses a method and device for processing camera video data at a cloud terminal, and the method comprises the steps that the cloud terminal receives an instruction, transmitted by a virtual machine, of starting a camera for photographing, and starts the camera on the cloud terminal for photographing; raw photographing data is compressed and transmitted to the virtual machine for display after the cloud terminal determines that the camera has the raw photographing data through capturing. Therefore, the method and device can solve a problem that a high-resolution high-frame-rate camera cannot achieve a good display effect.

The embodiment of the invention discloses a video loading method and device, and relates to the technical field of multimedia. The method comprises the following steps: setting a background image of a loading interface of a player as a non-black screen video image; and removing the non-black screen video image according to a preset time to avoid a black screen in a loading process. According to the video loading method and device disclosed by the embodiment of the invention, the background image of the loading interface of the player is set as the non-black screen video image, and the non-black screen video image is removed according to the preset time to avoid the black screen in the loading process.

The invention discloses a method and a device for playing a video in a browser. The method comprises the steps of when receiving a loading request used for requesting for loading a first video in a browser; responding to the loading request to load and display a first masking in the browser; loading the video resources of the first video in the browser, and canceling the display of the first masking in the browser when starting for playing the video resources of the first video. According to the method, the technical problem that in the related technology, the viewing experience of the user is influenced due to the blank screen phenomenon of a page when the webpage is opened and the video is automatically loaded and played is solved.

The invention relates to a method and a system for quickly changing programs. The system for quickly changing programs comprises a data receiving module, a filtering module, a decoding module and a storage module, wherein the data receiving module is used for receiving original audio and video data, the filtering module is used for filtering audio and video data of a first program and a second program, the decoding module is used for decoding the filtered audio and video data to play, and the storage module is used for storing one channel of video data and one channel of audio data of the second program after filtering. The data receiving module, the filtering module and the decoding module are sequentially connected, and the storage module is connected with the filtering module and the decoding module. During playing of one program, other programs are filtered on the background, and one of channels of the video data and the audio data are selected to cache, so that cache data can be played during changing, and halt during program changing is shortened, black screen is avoided and good experience is provided for users.

The embodiment of the invention relates to an audio and video playing method and device, electronic equipment and a storage medium, and the method comprises the steps: obtaining slice addresses of a plurality of resolutions of an audio and video according to an audio and video on demand request; constructing an M3U8 playlist according to the slice address; matching a target address of a corresponding slice from the M3U8 playlist in real time according to the change information of the network state; and obtaining a slice corresponding to the target address to play the audio and video, so the resolution can be automatically switched according to the network state, and slice addresses with different resolutions do not need to be re-requested from the server, so that a system player does not need to be restarted if resolution switching needs to be carried out in an audio and video playing process, a black screen is prevented from appearing in a current playing interface, a smooth playing effect is achieved, and the audio and video watching experience of a user is improved.

The invention discloses an online audio-video playing method and an inline audio-video playing system. When a definition switching command is received, videos with various definitions are synchronously downloaded in a multi-threading manner, so that the normal playing of the current definition is ensured and the loading of the target definition is also completed, and the seamless definition switching function is achieved. The black screen waiting phenomenon that exists when the current playing is ended and the playing instance is built once more is avoided, and the watching experience of the user is improved.

The invention discloses a timing control device and method and a display device. The timing control device comprises a clock module which is used for generating a clock signal, an interface module which is used for generating a hot plug detection signal, a counting module which is used for calculating the periodicity of the clock signal and continuously outputs a low-level signal when the periodicity reaches a predetermined periodicity, and a delay shaping module which is used for sampling the hot plug detection signal when the low-level signal is received, and outputting the sampled hot plug detection signal. The timing control device can carry out delay shaping on the hot plug detection signal to improve the anti-interference ability of the hot plug detection signal. The hot plug detection signal is in normal timing, which prevents a display from the phenomenon of abnormal black screen.

An embodiment of the invention provides a television page switching method and an apparatus thereof. The method comprises the following steps of receiving a switching instruction input by a user, wherein the switching instruction is used for requesting to switch a page displayed by a television to a target page, and the target page includes a video play window and a static state window; displaying a preset page on a top image layer of a video screen; simultaneously, displaying the static state window in the video screen and loading a video corresponding to the target page in the video play window; and cancelling to display the preset page on the top image layer of the video screen so as to display the static state window in the video screen and carry out video play through the video play window. By using the method and the apparatus of the invention, page switching efficiency and a watching experience of a user are increased.

The invention discloses a black screen prevention circuit and method, a driving circuit and a display device, and belongs to the technical field of display. The black screen prevention circuit is applied to a driving circuit of a display. The driving circuit comprises an integrated power supply management circuit, a level conversion circuit and a counter control register, and the black screen prevention circuit comprises a determination sub-circuit which is configured to determine whether more than two clock signals exist in multiple clock signals output by the counter control register and areboth effective levels; and a control sub-circuit which is configured to cut off the grid electrode high level signal and the grid electrode low level signal output to the level conversion circuit bythe integrated power supply management circuit when the determination sub-circuit determines that more than two paths of clock signals exist at the same time as effective levels, so as to avoid the black screen phenomenon when the liquid crystal display is started.

The invention provides a detection screen of a new-generation information technology for image enhancement and relates to the technical field of image enhancement. The new-generation information technology detection screen capable of image enhancement comprises a machine body shell, wherein a mercury groove is fixedly formed in the machine body shell, an electromagnet is movably connected to an end, away from the mercury groove, of an electrified ball, a rotating wheel is movably installed in the machine body shell, and a magnetic pole piece is fixedly connected to the outer side of the rotating wheel. Mercury in a mercury groove expands and drives a moving rod at the top of the mercury groove to move through temperature rise of a detection screen, a baffle is driven to move through cooperative use of magnetic blocks, a ventilation opening is opened, a mainboard is cooled, the picture enhancement effect is achieved, and a telescopic rod is driven to rotate through cooperative use of anelectromagnet and a rotating wheel; and under the action of centrifugal force, a brush wheel is driven to clean dust on the shell of the machine body, and the effect of preventing black screen causedby mainboard short circuit is achieved.

The invention relates to a television display method, which discloses a display method of the turning on and off of the television and the channel-conversion and curtain-drawing. The curtain-drawing process comprises the following steps; the television receives the instruction of turning on or off the television or converting the channel, reads the curtain-drawing parameters, namely the curtain-drawing mode and the curtain-drawing color information, operates the display process of the corresponding curtain-drawing mode and curtain-drawing color according to the curtain-drawing parameters of the television and displays the common and corresponding picture after the turning on and off and the channel-conversion of the television. The television that adopts the curtain-drawing control method of the invention can freely choose and set in a plurality of curtain-drawing modes and curtain-drawing colors with colorful content, which can greatly satisfy the need of the consumers. Meanwhile, the television with the method can greatly reduce the impulse on the parts and the damage to the eye, which avoids the long-time black screen when turning on the television.

The invention discloses a multi-thread software concurrent design method, which comprises the following steps of: 1, designing a user interface (UI) lane, a downloading thread lane and a java virtual machine thread lane; 2, downloading a java application program in the downloading thread lane through a browser, and transmitting a uniform resource locator (URL) of a java archive (JAR) to the browser in the java virtual machine thread lane in a call-back mode; and 3, downloading the JAR in the downloading thread lane by using the browser, and calling a third party asynchronous interface to install the java application program after the JAR is downloaded. In the software concurrent design method, threads are divided into different lanes, and steps which are needed to be executed in the lanes are designed in the lanes, so that synchronization and mutex relationships among the threads can be comprehensively designed; and severe phenomena such as crash, black screen, fixed screen, restart and the like due to improper processing are avoided.

The invention provides an air conditioner control method and control system based on a vehicle-mounted central control device and a vehicle. According to the invention, communication information of acentral control device and an air conditioner controller is monitored; whether the central control device is in a crash state or not is determined according to the communication information; and whenthe duration of the crash state reaches a preset value, an anti-fogging mode is started. Therefore, a problem that a central control large screen becomes black due to sudden crash of a central controldevice in the running process of the vehicle and thus an air conditioning system cannot be controlled and a vehicle window is fogged can be solved, and excellent riding experience can be brought to passengers.

The invention provides a screen projection output control method and device and electronic equipment, and the method comprises the steps that the electronic equipment can obtain to-be-projected screendata which contains the display content of the screen projection equipment in a first display mode and has a first streaming media formatand current screen state information of the electronic equipment in a process that the screen projection equipment carries out the wireless screen projection application to the AIO (All-In-One Computer) and other electronic equipment; , and then whether the screen state information is matched with a first streaming media format and a first display mode or not is detected, so that the to-be-projected screen data is decoded according to a decoding rule corresponding to the obtained matching detection result. The electronic equipment is controlled to be in the first display mode, the target screen projection data obtained through decoding is output, it is guaranteed that the electronic equipment can display the display content of the screen projection equipment in a full-screen mode, display resources of the electronic equipment are fully utilized, it is avoided that the periphery of the screen projection display content of the electronic equipment is a black screen, and the wireless screen projection display effect is improved.

The invention provides electronic equipment, a display screen, and a glass cover plate and a manufacturing method thereof, wherein the electronic equipment comprises the display screen, the display screen comprises the glass cover plate and a display module, the glass cover plate is installed on the display module, and comprises a glass substrate and an antistatic layer, the antistatic layer is arranged on the glass substrate, and the surface resistance of the antistatic layer is 1.0*10<5>-1.0*10<12> ohm. According to the present invention, the glass cover plate comprises the antistatic layer,the surface resistance of the antistatic layer is smaller than the surface resistance of the glass substrate (ie., the antistatic layer has high static conductivity), and static electricity can be discharged to water vapor in air, a human body or other conductors in time through the antistatic layer, such that the static charges can be prevented from being accumulated on the surface of the glasscover plate so as to prevent the display problems of black screen, blurred screen, static transverse lines and the like, and the problem of dirt adsorption caused by electrostatic adsorption can be relieved.

The invention discloses an HBBTV display processing method and apparatus. The method comprises the following steps: determining an HBBTV application page state in real time or periodically, when the HBBTV application page state changes, sending a change HBBTV application page state to a user interface UI, so that when a broadcast channel is in a preset mode, the UI judges whether to perform bulletbox prompt according to the HBBTV application page state received at the last time. The bullet box prompt is performed in the preset mode, the black screen phenomenon is avoided, and the user experience is improved.

Embodiments of the invention disclose a display control method and apparatus for an application interface. The method comprises the steps of executing exit operation for a first application accordingto an exit request when the exit request for the first application is received; executing startup operation for the first application according to a startup request when the startup request for the first application is received in a preset time period; and determining a to-be-removed first display interface in the first application as a to-be-displayed display interface in the startup operation. The black screen phenomenon caused by relatively long exit processing time when the application is restarted after exiting can be avoided; the display effect is improved; and the application startup processing duration is shortened.

The invention provides a wallpaper display method and a wallpaper display device. The method comprises the steps: starting the wallpaper carousel service of a system when a user-defined instruction ofwallpaper is received, and enabling the system authority of the wallpaper carousel service not to belong to the background application cleaning authority; obtaining a plurality of pieces of wallpaperto be played, drawing a switching entry display parameter corresponding to each piece of wallpaper according to a preset rendering algorithm in the wallpaper carousel service, and setting switching time between the pieces of wallpaper; when it is monitored that the switching time arrives, obtaining a to-be-displayed target wallpaper, and inquiring switching entry display parameters; and obtaininga target entrance display parameter corresponding to the target wallpaper, and switching the target wallpaper according to the target entrance display parameter. Therefore, the technical problems that in the prior art, a black screen occurs during wallpaper switching during wallpaper carousel, and carousel service is unstable due to the fact that wallpaper carousel is easy to clean by a user aresolved.

The invention provides a decoding method for judging video playing of an Android mobile phone, and belongs to the field of video decoding. The method comprises the following steps: intercepting a video clip, decoding the intercepted video clip through an initialized MediaCodec decoder, capturing rendering data through a GPU, and judging whether the target video can be decoded and played by current equipment or not according to a capturing result, namely, decoding the video clip by a client before playing the video; in addition, the length of the video clip is very small, so that the decoding speed is very high, whether the equipment supports the video in the coding format or not can be quickly judged, and if no equipment is supported for decoding, software is used for decoding. In other words, the decoding priority level is that the code stream with the high coding level in the GPU is smaller than the code stream with the low coding level in the GPU which is smaller than the CPU.

The invention relates to a data processing method of a multimedia device. The multimedia device suspends playing of a multimedia datum in response to a suspending signal. The method comprises the following steps: temporarily storing the multimedia datum before reception of the suspending signal in order to obtain a pre-stored multimedia datum; writing the pre-stored multimedia datum into a storage unit in response to the suspending signal; reading the pre-stored multimedia datum from the storage unit in response to a playing signal; and playing the pre-stored multimedia datum.

The invention provides an online video cut-off continuous playing method and system in the technical field of set top boxes. The method comprises the following steps: step S10, acquiring an online video by a set top box; step S20, the set top box splitting the online video into an audio packet and a video packet; step S30, the set top box respectively decoding the audio packet and the video packet to obtain an audio frame and a video frame; step S40, the set top box setting a proportion threshold value, synchronizing each audio frame and each video frame to obtain a synchronous video, judging whether the frame drop rate of the synchronous video is greater than the proportion threshold value or not, and playing the synchronous video if the frame drop rate of the synchronous video is not greater than the proportion threshold value; if yes, indicating that the current network is abnormal, recording the current playing progress, and entering the step S50; step S50, monitoring whether the network is recovered or not, and if yes, playing the synchronous video based on the playing progress; and if not, continuing to monitor the network. The method has the advantages that the on-line video can be continuously played in a cut-off manner, a blank screen and a stuck frame are avoided, and the user experience is greatly improved.