Abstract: Methods and apparatuses for sharing a virtual image. An apparatus includes a virtual image creating unit which creates a moving virtual image, a virtual image registration requesting unit which requests a virtual image sharing server to register the virtual image created by the virtual image creating unit, and a virtual image sharing unit which receives the virtual image having the moving coordinates, which corresponds to current position information of the terminal device, from the virtual image sharing server.

Abstract: A method for selecting an operational channel of a wireless narrow area network, a coordinator using the same, and a computer-readable recording media recording a program for realizing the method. More particularly, a method for selecting an operational channel of a wireless narrow area network in which one radio channel is occupied by a plurality of coordinators at different timings by selecting a predetermined period of a radio channel where a coordinator of the wireless narrow area network is used by another coordinator as own operational channel, a coordinator using the same, and a computer-readable recording media recording a program for realizing the method.

Abstract: Provided is a method for localization message process. The method includes allocating cluster resources for recognizing a location of a mobile node, setting operation of each node by deciding a cluster operation state for the mobile node, measuring distances between the mobile node to each of anchor nodes, and recognizing a location of the mobile node.

Abstract: Methods and apparatuses for sharing a virtual image. An apparatus includes a virtual image creating unit which creates a moving virtual image, a virtual image registration requesting unit which requests a virtual image sharing server to register the virtual image created by the virtual image creating unit, and a virtual image sharing unit which receives the virtual image having the moving coordinates, which corresponds to current position information of the terminal device, from the virtual image sharing server.

Abstract: A method for selecting an operational channel of a wireless narrow area network, a coordinator using the same, and a computer-readable recording media recording a program for realizing the method. More particularly, a method for selecting an operational channel of a wireless narrow area network in which one radio channel is occupied by a plurality of coordinators at different timings by selecting a predetermined period of a radio channel where a coordinator of the wireless narrow area network is used by another coordinator as own operational channel, a coordinator using the same, and a computer-readable recording media recording a program for realizing the method.

Abstract: Provided is a method for localization message process. The method includes allocating cluster resources for recognizing a location of a mobile node, setting operation of each node by deciding a cluster operation state for the mobile node, measuring distances between the mobile node to each of anchor nodes, and recognizing a location of the mobile node.

Abstract: An apparatus and a method for video transmission in a video conferencing system in which in order to efficiently transmit the speaker's picture in meetings, conferences, workshops and the like, the text data is separately transmitted by being separated from the speaker's picture.

Abstract: An apparatus and a method for video transmission in a video conferencing system in which in order to efficiently transmit the speaker's picture in meetings, conferences, workshops and the like, the text data is separately transmitted by being separated from the speaker's picture.