Patent ID: 7302464

Claim:
A user request processing method, using an upstream channel, after a three-dimensional scene generated based on a binary format is transmitted from a server to a terminal, the user request processing method comprising the steps of: (a) setting downstream/upstream channels between the server and the terminal as initialization; (b) the terminal forming an upstream channel message if a user request of predetermined processing of a predetermined object occurs in a scene transmitted from the server to the terminal through the downstream channel, and transmitting the message to the server through the upstream channel, wherein the upstream channel message identifies a corresponding node in the scene in which the user request occurred, wherein the user request is generated by the user selecting the predetermined object in the scene transmitted from the server to the terminal through the downstream channel, and wherein step (b) further comprises the steps of: (b1) defining the corresponding node in the scene, in which the user request occurred, using information on objects forming the transmitted scene; (b2) determining a node identifier of the defined node, using information on the objects; (b3) defining a command to be executed in the server for the defined node, in, response to the user request; and (b4) forming the upstream channel message containing the node identifier and the command; (c) the server receiving the upstream channel message, interpreting the message, processing the message as the user request of predetermined processing, and transmitting the result to the terminal; and (d) the terminal substituting the processing result of step (c) for the predetermined object in the scene transmitted in step (b), and providing it to the user.