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1. WO2022001027 - PROJECTION SCREEN PICTURE SELF-ADAPTION METHOD AND APPARATUS IN NETWORK TEACHING

Publication Number WO/2022/001027
Publication Date 06.01.2022
International Application No. PCT/CN2020/138437
International Filing Date 22.12.2020
IPC
H04N 21/2343 2011.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
21Selective content distribution, e.g. interactive television or video on demand
20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
23Processing of content or additional data; Elementary server operations; Server middleware
234Processing of video elementary streams, e.g. splicing of video streams or manipulating MPEG-4 scene graphs
2343involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
CPC
G09B 5/02
GPHYSICS
09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
BEDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
5Electrically-operated educational appliances
02with visual presentation of the material to be studied, e.g. using film strip
H04N 21/4312
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
21Selective content distribution, e.g. interactive television or video on demand [VOD]
40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
43Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
431Generation of visual interfaces ; for content selection or interaction; Content or additional data rendering
4312involving specific graphical features, e.g. screen layout, special fonts or colors, blinking icons, highlights or animations
H04N 21/4402
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
21Selective content distribution, e.g. interactive television or video on demand [VOD]
40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
43Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
44Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs
4402involving reformatting operations of video signals for household redistribution, storage or real-time display
H04N 21/440263
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
21Selective content distribution, e.g. interactive television or video on demand [VOD]
40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
43Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
44Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs
4402involving reformatting operations of video signals for household redistribution, storage or real-time display
440263by altering the spatial resolution, e.g. for displaying on a connected PDA
Applicants
  • 深圳市鹰硕技术有限公司 SHENZHEN EAGLESOUL TECHNOLOGY CO., LTD. [CN]/[CN]
Inventors
  • 陈滢朱 CHEN, Yingzhu
  • 刘善果 LIU, Shanguo
  • 刘胜强 LIU, Shengqiang
Agents
  • 深圳余梅专利代理事务(特殊普通合伙) SHENZHEN YU MEI PATENT AGENCY (SPECIAL GENERAL PARTNERSHIP)
Priority Data
202010628635.102.07.2020CN
Publication Language Chinese (zh)
Filing Language Chinese (ZH)
Designated States
Title
(EN) PROJECTION SCREEN PICTURE SELF-ADAPTION METHOD AND APPARATUS IN NETWORK TEACHING
(FR) PROCÉDÉ ET APPAREIL D'AUTOADAPTATION D'IMAGE D'ÉCRAN DE PROJECTION DANS L'APPRENTISSAGE DE RÉSEAU
(ZH) 网络教学中投屏画面自适应的方法以及装置
Abstract
(EN) The present disclosure relates to a projection screen picture self-adaption method and apparatus in network teaching, an electronic device, and a storage medium. The method comprises: measuring the size of a network teaching projection screen source video, and comparing with the display size of a playing device to generate a first determining result; if the first determining result satisfies a first preset condition, detecting the actual playing region of a network teaching projection screen source video picture according to a preset detection method, so as to generate a second determining result; and if the second determining result satisfies a second preset condition, collecting the size of the actual playing region of the network teaching projection screen source video picture, and expanding the actual playing region of the network teaching projection screen source video picture to the display size of the playing device in an equal proportion, so as to adaptively adjust, according to the actual playing region of the network teaching projection screen source video picture, the display size of the playing device for playing. By realizing a self-adaptive playing device by means of the detection of the projection screen picture in network teaching, the present disclosure solves the problem that the display content is too small when performing display in a picture-in-picture mode, thereby improving user experience.
(FR) La présente invention concerne un procédé et un appareil d'évaluation d'autoadaptation d'image d'écran de projection dans l'apprentissage de réseau, un dispositif électronique et un support d'enregistrement. Le procédé consiste à : mesurer la taille d'une vidéo source d'écran de projection d'apprentissage de réseau, et exécuter une comparaison avec la taille d'affichage d'un dispositif de lecture pour générer un premier résultat de détermination ; si le premier résultat de détermination satisfait à une première condition prédéfinie, détecter la région de lecture réelle d'une image vidéo source d'écran de projection d'apprentissage de réseau selon un procédé de détection prédéfini, de façon à générer un second résultat de détermination ; et si le second résultat de détermination satisfait à une seconde condition prédéfinie, collecter la taille de la région de lecture réelle de l'image vidéo source d'écran de projection d'apprentissage de réseau, et agrandir la région de lecture réelle de l'image vidéo source d'écran de projection d'apprentissage de réseau à la taille d'affichage du dispositif de lecture dans une proportion égale, de façon à régler de manière adaptative, en selon la région de lecture réelle de l'image vidéo source d'écran de projection d'apprentissage de réseau, la taille d'affichage du dispositif de lecture aux fins de la lecture. Par réalisation d'un dispositif de lecture autoadaptative au moyen de la détection de l'image d'écran de projection dans l'apprentissage de réseau, la présente invention résout le problème selon lequel le contenu d'affichage est trop petit lors de l'affichage dans un mode d'incrustation d'image, ce qui permet d'améliorer l'expérience utilisateur.
(ZH) 本公开是关于一种网络教学中投屏画面自适应的方法、装置、电子设备以及存储介质。其中,该方法包括:检测网络教学投屏源视频尺寸,并与播放设备显示尺寸对比,生成第一判断结果;若其满足第一预设条件,则根据预设检测方法检测网络教学投屏源视频画面实际播放区域,生成第二判断结果;若其满足第二预设条件,则采集网络教学投屏源视频画面实际播放区域的尺寸,并将所述网络教学投屏源视频画面实际播放区域等比例扩展至播放设备显示尺寸,以根据所述网络教学投屏源视频画面实际播放区域自适应调整播放设备显示尺寸进行播放。本公开通过网络教学中投屏画面的检测实现自适应播放设备,解决了多重画面套用时显示内容过小的问题,提高了用户体验。
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