Client system for implementing 3-dimensional virtual reality and method for implementing virtual reality using same

A method for implementing a virtual reality in a client system by using a X3D data provided form a service server, comprising the steps of:

• (a) parsing the received X3D data to construct a scene graph;
• (b) conducting a rendering of the scene graph to have a predetermine form and, then, displaying the virtual reality on a navigation window;
• (c) updating a scene of the virtual reality according to a user's navigation through the virtual reality displayed on the navigation window;
• (d) determining whether an event occurs or not in response to an event information in the virtual reality displayed on the navigation window;
• (e) receiving from the service server a data required for processing the event in the virtual reality based on the event determination and generating an external window to display the received data.