Abstract: A Universal Plug-and-Play (UPnP)-based network system and a control method thereof are provided. The UPnP-based network system includes a controlled device which transmits an advertisement message, and a control point which receives the transmitted advertisement message. The control point determines whether an extension header included in the advertisement message is changed, and if the extension header is changed, the control point transmits a message for requesting a description file to the controlled device. Also, the UPnP-based network system includes a controlled device which provides a description change advertisement service, and a control point which performs subscription of the description change advertisement service. The control point receives an event message for the description change advertisement service transmitted by the controlled device, and transmits a message for requesting a description file to the controlled device.

Abstract: Provided are a method and apparatus for efficiently transmitting and receiving information regarding a Universal Plug and Play (UPnP) event. In the method of receiving event information, a notice regarding a part of a plurality of status changes of a service is requested for an event indicating at least one of the status changes of the service, and information regarding the part of the status changes is received in response to the request. Accordingly, a control point can receive an event message that contains only necessary status parameters.

Abstract: A Universal Plug-and-Play (UPnP)-based network system and a control method thereof are provided. The UPnP-based network system includes a controlled device which transmits an advertisement message, and a control point which receives the transmitted advertisement message. The control point determines whether an extension header included in the advertisement message is changed, and if the extension header is changed, the control point transmits a message for requesting a description file to the controlled device. Also, the UPnP-based network system includes a controlled device which provides a description change advertisement service, and a control point which performs subscription of the description change advertisement service. The control point receives an event message for the description change advertisement service transmitted by the controlled device, and transmits a message for requesting a description file to the controlled device.

Abstract: A method and system for displaying status information about each of a plurality of devices and transmitting control information in a home network environment are provided. Includes (a) running an application program for providing a user interface; (b) the control device receiving status information from the controlled devices; (c) the application program displaying controlled devices in operation on the display referring to the status information received in step (b); (d) displaying a web page indicative of operation of a selected controlled device upon selection by a user; and (e) transmitting a control command to the controlled device. The application program may be system independent of an execution environment of a controlled device and run directly by a web browser.

Abstract: Provided are a method and apparatus for efficiently transmitting and receiving information regarding a Universal Plug and Play (UPnP) event. In the method of receiving event information, a notice regarding a part of a plurality of status changes of a service is requested for an event indicating at least one of the status changes of the service, and information regarding the part of the status changes is received in response to the request. Accordingly, a control point can receive an event message that contains only necessary status parameters.

Abstract: A network device and system for authentication and a method for authenticating network devices using the network device for authentication. The network system for authentication has a network device for authentication including an authentication information generation unit for generating the authentication information of the network device and an interface unit for transmitting the generated authentication information to the other network devices over the private network, and another network device for authentication including an interface unit for receiving the authentication information over the private network from a network device for requesting authentication and an authentication information registration unit for registering the received authentication information thereon.

Abstract: A method and system for displaying status information about each of a plurality of devices and transmitting control information in a home network environment are provided. Includes (a) running an application program for providing a user interface; (b) the control device receiving status information from the controlled devices; (c) the application program displaying controlled devices in operation on the display referring to the status information received in step (b); (d) displaying a web page indicative of operation of a selected controlled device upon selection by a user; and (e) transmitting a control command to the controlled device. The application program may be system independent of an execution environment of a controlled device and run directly by a web browser.