Abstract: The present invention relates to a network device and method available for use in non-secure use mode. A network device according to the present invention includes an ownership establishment determination unit for determining whether ownership has been established in the network device and establishing either a secure or non-secure use mode, upon reception of a use request message from a user through a control unit; and a non-secure use range search unit for searching for a non-secure use range available in non-secure use mode, if the ownership establishment determination unit determines the establishment of the non-secure use mode, and granting the user a license for the searched non-secure range. According to the present invention, there is an advantage in that a license for an appropriate range of content of a secure network device can be granted to a user even during the initial construction stage of a home network.

Abstract: A method for controlling screen layout in an electronic device includes recognizing a screen layout in which a plurality of application icons are arranged on a display, storing information regarding the screen layout along with a first tag, and when a screen layout change event occurs, displaying a changed screen layout according to the screen layout change event on the screen, and storing information regarding the changed screen layout along with a second tag. An electronic device includes a processor configured to detect a screen layout in which a plurality of application icons are arranged on a screen, and a first storage configured to store information regarding the detected screen layout along with a first tag, and wherein, when a screen layout change event occurs, the processor is configured to cause the first storage to store information regarding the changed screen layout along with a second tag.

Abstract: An apparatus and method for processing a data stream using a cluster query, are provided. Collected queries are clustered into a predetermined vector space based on a feature vector of the collected queries. In response to a query received from a user, the received query is classified to a cluster and may be replaced with a centroid query of the cluster to which the received query belongs. The data stream processing apparatus processes the centroid query and provides an approximate result to the user.

Abstract: An apparatus and method for processing a data stream using a cluster query, are provided. Collected queries are clustered into a predetermined vector space based on a feature vector of the collected queries. In response to a query received from a user, the received query is classified to a cluster and may be replaced with a centroid query of the cluster to which the received query belongs. The data stream processing apparatus processes the centroid query and provides an approximate result to the user.

Abstract: The present invention relates to a network device and method available for use in non-secure use mode. A network device according to the present invention includes an ownership establishment determination unit for determining whether ownership has been established in the network device and establishing either a secure or non-secure use mode, upon reception of a use request message from a user through a control unit; and a non-secure use range search unit for searching for a non-secure use range available in non-secure use mode, if the ownership establishment determination unit determines the establishment of the non-secure use mode, and granting the user a license for the searched non-secure range. According to the present invention, there is an advantage in that a license for an appropriate range of content of a secure network device can be granted to a user even during the initial construction stage of a home network.

Abstract: A method and system for constructing and utilizing home-state information, which systematically defines home-state information, that is, complicated information within a home generated with the development of a home network, and enables a user to utilize the home-state information. In order to accomplish the object of providing a method of constructing home-state information, the present invention comprises the steps of constructing a home-state set using home-state information sources, constructing home-state objects which are specific instances of the home-state set, and constructing home-state properties expressing properties of the home-state objects.

Abstract: Provided are method and system for remotely updating a household device. The household device, which is coupled to a predetermined server through a communication network and can be remotely updated with update function data downloaded from the server, includes a first unit that forcibly converts the household device into a download mode when the household device is in a state in which it cannot automatically or manually receive the update function data; and a second unit that receives the update function data from the server according to the authorization of the first unit and updates a system function. Accordingly, the external update function data can be downloaded to the household device through the network to update the function of the household device without expense of human resources, even if the household device operates abnormally.