Method and device for synchronously presenting display content

Abstract

The invention discloses a method and a device for synchronously presenting display content, wherein the method comprises the steps as follows: a multicast server receives client display description information from an electronic whiteboard in a plurality of electronic whiteboards, wherein the client display description information is used for describing the content which has been displayed on the electronic whiteboard of the client or which will be displayed on the electronic whiteboard of the client; the multicast server generates display description information for synchronizing according to the client display description information and the server display description information stored in the multicast server, and replaces the client display description information as the display description information for synchronizing, wherein the server display description information is used for describing the content which is commonly and synchronously displayed on at least one electronic whiteboard in the plurality of electronic whiteboards, and the multicast server performs multicasting the display description information for synchronizing to at least one electronic whiteboard. The method and the device of the invention solve the problem that the load of the electronic whiteboard is high brought by transmitting pictured to be displayed synchronously to other electronic whiteboard via one electronic whiteboard.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method and device for synchronous presentation of display content. Background technique [0002] In related technologies, network teaching has two modes: offline classroom and online classroom. [0003] Among them, offline classrooms generally use pre-recorded videos, and students watch learning video courses. Offline classrooms cannot interact with teachers during the teaching process, so students can only passively accept video content during the learning process, and the learning process is boring and inefficient. . [0004] Online classrooms generally adopt the form of real-time lectures by teachers and students. During the teaching process, teachers and students can communicate through audio or additional interactive windows. Among them, the content communicated through the interactive windows is not limited to text, and graphics can also be used, but Since the interact...

AI Technical Summary

Problems solved by technology

[0006] However, the inventor found in the research process that the interactive operation and synchronous display of electronic whiteboards proposed in the related art are only applicable to the interaction between two electronic whiteboards.

In an online classroom scenario, there may be dozens or even hundreds of electronic whiteboards that need to be interactively operated or displayed simultaneously. The whiteboard sends input information to achieve synchronous display, which will not only increase the difficulty of configuration management, but also cause a very high load on the electronic whiteboard that sends input information, resulting in system crashes or high display delays and screen lags

[0007] In the related art, there is no effective solution to the problem that an electronic whiteboard sends images to be displayed synchronously to other electronic whiteboards, resulting in a high load on this electronic whiteboard.

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