WO2021092827A1 - Procédé et dispositif de traitement de commutation sans écran noir de signal vidéo - Google Patents

Procédé et dispositif de traitement de commutation sans écran noir de signal vidéo Download PDF

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Publication number
WO2021092827A1
WO2021092827A1 PCT/CN2019/118319 CN2019118319W WO2021092827A1 WO 2021092827 A1 WO2021092827 A1 WO 2021092827A1 CN 2019118319 W CN2019118319 W CN 2019118319W WO 2021092827 A1 WO2021092827 A1 WO 2021092827A1
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WO
WIPO (PCT)
Prior art keywords
output
image
timing
video signal
module
Prior art date
Application number
PCT/CN2019/118319
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English (en)
Chinese (zh)
Inventor
贾正东
Original Assignee
深圳爱特天翔科技有限公司
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 深圳爱特天翔科技有限公司 filed Critical 深圳爱特天翔科技有限公司
Priority to PCT/CN2019/118319 priority Critical patent/WO2021092827A1/fr
Priority to CN201980002420.4A priority patent/CN110999275B/zh
Publication of WO2021092827A1 publication Critical patent/WO2021092827A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/222—Studio circuitry; Studio devices; Studio equipment
    • H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
    • H04N5/268—Signal distribution or switching

Definitions

  • the invention relates to the technical field of multimedia conferences, in particular to a method and device for processing video signals without black screen switching.
  • the matrix and switcher are the core equipment for signal circulation. All input and output signals of the system enter and exit from the matrix and switcher, and enter the designated output terminal from the input end according to the operator's design.
  • the display device Due to the diversity of signals in the system, when input signals of different formats and resolutions are switched to the output terminal for display, the display device will have a black screen, off screen or flicker, which affects the effect and experience of the entire multimedia conference, and cannot meet high requirements. Quality output requirements.
  • the present invention provides a method and device for processing video signals without black screen switching, so as to solve at least one of the above technical problems.
  • a method for processing a video signal without black screen switching includes: receiving a video signal; timing the received signal according to the current application configuration and the EDID information of the back-end display device Monitoring; when the input timing is monitored, the output screen is locked, and the effect of locking the last frame of the screen when the signal is lost or switched; when the input timing is monitored to be stable, the image resolution conversion is performed according to the configured resolution; Display the image after resolution conversion.
  • the method further includes: receiving and storing image data to be output, so as to freely adjust the number of stored picture frames to be output according to the configuration of the application.
  • the method further includes: reading the image after resolution conversion, and generating the final output timing according to the pre-configured timing, supporting multiple output timings such as 4K@60HZ, 720P, 1080P, WUXGA, etc.
  • the black-screen switching processing method of the video signal can be designed into the output circuit of the matrix and the switcher, or designed as a separate processing device connected to the output terminal of the matrix and the switcher.
  • the present invention also provides a video signal non-black screen switching processing device, including:
  • Signal receiving module for receiving video signals
  • the MCU module is used to perform timing monitoring and timing generation control on the received signals according to the current application configuration and the EDID information of the back-end display device;
  • Timing monitoring module used to lock the output screen when the input timing is detected to change, and then to achieve the effect of locking the last frame of the picture when the signal is lost or switched, and used to zoom to the following image when the input timing is stable.
  • Output image data used to lock the output screen when the input timing is detected to change, and then to achieve the effect of locking the last frame of the picture when the signal is lost or switched, and used to zoom to the following image when the input timing is stable.
  • An image scaling module configured to receive image data from the timing monitoring module, and perform image resolution conversion according to the configured resolution
  • the signal sending module is used to send the image after resolution conversion to the display device.
  • a to-be-output image processing module for receiving and storing image data to be output, so as to freely adjust the number of stored image frames to be output according to the configuration of the application.
  • a timing generation module for reading the image after resolution conversion, and generating the final output timing according to the pre-configured timing, supporting multiple output timings such as 4K@60HZ, 720P, 1080P, WUXGA, etc. .
  • the video signal non-black screen switching processing device is built into the output circuit of the matrix and the switcher, or as a separate processor, is connected to the output terminal of the matrix and the switcher.
  • the present invention can combine seamless switching with advanced image resolution conversion technology, and can provide switching actions without black screen, no screen off, and no flicker during video signal switching, which meets the requirements of high quality and high resolution. Rate the demand for video presentations.
  • the image resolution can also be converted through the non-black screen switching processor, and converted to a supported resolution output.
  • Fig. 1 schematically shows a flow chart of the present invention.
  • the present invention proposes a method and device for realizing signal switching without black screen, which can be built into the output circuit of matrix and switcher to realize signal switching without black screen Processing; can also be used as a separate processor, connected to the output of the matrix and switcher, to achieve no black screen, no extinguishing, and no flicker during the signal switching process, which can meet the high-quality output of multimedia conferences, command centers, video surveillance, teaching and other fields Requirements.
  • the principle of the present invention is to combine seamless switching with advanced image resolution conversion technology to realize that the matrix and switcher have no black screen, no screen off, and no flicker during the signal switching process, and meet the needs of high-quality, high-resolution video presentations. .
  • the present invention provides a method for realizing signal switching without black screen.
  • the method can be applied to a separate processor designed to be externally connected to the output back end of the matrix and switcher; it can also be built into the output circuit of the matrix and switcher.
  • Realize the signal switching processing without black screen including: receiving video signals; monitoring the received signal timing according to the current application configuration and the EDID information of the back-end display device; when monitoring the input timing changes, locking the output screen, and then Realize the effect of locking the last frame of the picture when the signal is lost or switched; when the input timing is monitored to be stable, the image resolution conversion is performed according to the configured resolution; the image after the resolution conversion is displayed.
  • the present invention also provides a device for realizing the method, which belongs to a new type of application in the video matrix switching system, which can provide switching actions without black screen, no screen off, and no flicker during video signal switching, and meets the requirements of high quality and high Resolution video presentation requirements.
  • the device is equipped with signal receiving module, image resolution conversion processing module (including timing monitoring, image scaling, image to be output, timing generation), signal sending module and MCU control module, including at least 2 physical interfaces: 1 video signal input Interface, 1 video signal output interface.
  • image resolution conversion processing module including timing monitoring, image scaling, image to be output, timing generation
  • signal sending module and MCU control module, including at least 2 physical interfaces: 1 video signal input Interface, 1 video signal output interface.
  • the output terminal of the matrix and switcher is connected to the input interface of the non-black screen switching processing device, and the input supports the VESA mainstream resolution standard, up to 4K@60Hz; the display device (such as monitor, projector, etc.) is connected to the output interface of the non-black screen switching processing device ,
  • the output supports 4K@60Hz, 720P, 1080P, WUXGA, etc., adapted to the best resolution of the display device.
  • the switching processing equipment without black screen detects that the input signal sequence has changed, and immediately locks the output screen, so as to lock the last frame of the screen when the signal is lost or switched. Effect: When the device monitors that the input timing is stable, it performs image resolution conversion processing on the input signal, and finally generates the timing required by the application configuration, and the output signal is sent to the display device (support 4K@60Hz, 720P, 1080P, WUXGA, etc.) Output sequence), the whole process has no black screen, no flicker, and fast switching in an instant.
  • the video signal non-black screen switching processing device includes:
  • the signal receiving module is used to receive video signals, and can receive signals output by various types of matrixes, switchers, and multimedia program sources. It supports VESA mainstream resolution standards and supports up to 4K@60Hz;
  • the MCU module is used to perform timing monitoring and timing generation control on the received signals according to the current application configuration and the EDID information of the back-end display device;
  • the timing monitoring module is used to monitor the timing of the received signal. When the input timing is monitored, it will immediately notify the "image to be output” module to lock the output screen, so as to lock the last frame of the screen when the signal is lost or switched effect. When it is monitored that the input timing is stable, the image data is output to the image scaling module.
  • the image scaling module is used to receive the image data from the timing monitoring module, perform image resolution conversion according to the resolution configured by the MCU control module (that is, perform image scaling processing at the specified resolution), and output the converted image data to the Output image module;
  • the to-be-output image processing module is used to receive and store the image data to be output, and freely adjust the number of stored frames to be output according to the application configuration to ensure that the output screen can be "perfectly locked” under various conditions.
  • Timing generation module reads image data from the "image module to be output”, generates the final output timing according to the timing configured by the MCU control module, and sends it to the signal sending module. It supports 4K@60HZ, 720P, 1080P, WUXGA and other output timings .
  • the signal sending module is used to send the image after resolution conversion to the display device.
  • the display device includes various multimedia display terminals (such as projectors, TVs, monitors, etc.).
  • the present invention can combine seamless switching with advanced image resolution conversion technology, and can provide switching actions without black screen, no screen off, and no flicker during video signal switching, which meets the requirements of high quality and high resolution. Rate the demand for video presentations.
  • the image resolution can also be converted through the non-black screen switching processor, and converted to a supported resolution output.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Controls And Circuits For Display Device (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Transforming Electric Information Into Light Information (AREA)

Abstract

Procédé de traitement de commutation sans écran noir de signal vidéo, comprenant : la réception d'un signal vidéo ; la réalisation d'une surveillance de séquence temporelle sur le signal reçu en fonction de la configuration d'application actuelle et des informations EDID d'un dispositif d'affichage d'extrémité arrière ; le verrouillage d'une image de sortie lorsqu'une séquence temporelle d'entrée est surveillée pour changer, ce qui permet d'obtenir l'effet de verrouillage de la dernière image de trame lorsque le signal est perdu ou commuté ; la réalisation d'une conversion de résolution d'image en fonction de la résolution configurée lorsque la séquence temporelle d'entrée est surveillée pour être stable ; et l'affichage de l'image après conversion de résolution. La commutation continue est combinée à une technologie de conversion de résolution d'image avancée, qui peut fournir des actions de commutation sans écran noir, extinction d'écran et scintillement pendant la commutation de signal vidéo, et satisfaire aux exigences de présentations vidéo de haute qualité et à haute résolution.
PCT/CN2019/118319 2019-11-14 2019-11-14 Procédé et dispositif de traitement de commutation sans écran noir de signal vidéo WO2021092827A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2019/118319 WO2021092827A1 (fr) 2019-11-14 2019-11-14 Procédé et dispositif de traitement de commutation sans écran noir de signal vidéo
CN201980002420.4A CN110999275B (zh) 2019-11-14 2019-11-14 视频信号无黑屏切换处理方法和装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2019/118319 WO2021092827A1 (fr) 2019-11-14 2019-11-14 Procédé et dispositif de traitement de commutation sans écran noir de signal vidéo

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CN114567802A (zh) * 2021-12-29 2022-05-31 沈阳中科创达软件有限公司 一种数据显示方法和装置

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CN111696477B (zh) * 2020-06-03 2021-05-18 康佳集团股份有限公司 一种超高清电视的显示控制方法及8k超高清电视
CN111956920A (zh) * 2020-06-05 2020-11-20 北京无线电测量研究所 呼吸机显示装置、设备以及呼吸机
CN112135007B (zh) * 2020-08-25 2023-04-18 惠州华阳通用电子有限公司 一种流媒体视角切换方法及系统
CN112130796B (zh) * 2020-09-22 2023-12-12 北京计算机技术及应用研究所 一种适用于加固多单元服务器的kvm切换系统及方法
CN112367556A (zh) * 2020-11-02 2021-02-12 广州朗国电子科技有限公司 自动调整信号源输出画面方法、装置、及系统

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