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Method for model postil and operation transmission in universal type synergic communion system

A communication system, general-purpose technology, applied in transmission systems, digital transmission systems, data exchange details, etc., can solve problems such as large amount of model data, reduce misunderstandings, improve enterprise competitiveness, and shorten product development cycles.

Inactive Publication Date: 2007-09-05
TSINGHUA UNIV
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

In the process of data transmission, the data volume of product model data is large. Compared with the high interaction and real-time requirements of collaborative design for model operation, the bandwidth and delay of network communication become the main application obstacles.

Method used

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  • Method for model postil and operation transmission in universal type synergic communion system
  • Method for model postil and operation transmission in universal type synergic communion system
  • Method for model postil and operation transmission in universal type synergic communion system

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Embodiment Construction

[0045] The present invention contains following steps successively, see Fig. 5;

[0046](1) The collaborative communication tools based on 3D model and 2D model are slightly different in system structure. The system structure of the collaborative communication tool based on the VRML model is shown in Figure 2. It is mainly composed of three functional modules, namely the model display module, the user interaction module and the communication module. The model display module uses the VRML browser CORTONA VRML VIEWER to interpret the VRML file, reads the model into the memory, and uses the 3D processing function of OpenGL to perform operations such as blanking and lighting on the model to realize the display and rendering of the VRML model. The user interaction module is used to process the user's input and return the output to the user. The user's operations include viewpoint conversion, zooming in and out of views, inserting annotations, activating annotations, and so on. Th...

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Abstract

Disclosed is an invention, which cooperates with CAD for production design. It is characterized in that: employing the separate transmission mechanism of model synchronization and operation synchronization between client and server to realize real time synergetic design; also employing stream sockets for information exchange. For three-dimensional model, server terminal and each client terminals are provided with: model display module based on VRML files, customer interchange and communication modules; for two-dimensional model, the server terminal and client terminals are provided with communication module, remark module based on VECT library and communication module. The invention has the advantage of improving the real time communication efficiency between designers, of shorting production-developing cycle.

Description

technical field [0001] The method for model annotation and operation transmission in a general collaborative communication system belongs to the field of computer aided collaborative product design tools. Background technique [0002] At present, in the traditional design method of manufacturing industry, product design using single-user CAD system has become the mainstream. However, as more and more engineering projects are designed, and the number of users and participants is increasing, the single-user CAD system can no longer meet the design needs; the main performance is that designers cannot communicate and communicate with each other through the system. Information sharing leads to repeated design, data inconsistency and repeated copying, which affects the quality and progress of engineering design. Therefore, it is a development direction of CAD technology to develop a CAD system that supports multi-user collaborative product development in a network environment and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/18H04L12/56G06F17/50
Inventor 田凌吕振远
Owner TSINGHUA UNIV
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