Abstract: A method for providing content where one device from among a plurality of devices is determined as a device to transmit the content to, based on the attribute of the requested content. Accordingly, device utilization is optimized by providing the content to the device with the highest priority to play back the content based on the attribute of the content.

Abstract: A method for providing a search service of a display apparatus includes receiving a selection of an object by displaying a screen that displays at least one object, and providing location information adaptive to the user terminal to the user terminal using all location information of the searched object and information regarding a user location. Accordingly, a user may conveniently search a desired object.

Abstract: A service providing apparatus and method are provided. The service providing apparatus includes a receiving unit that receives content metadata and a controller that determines a related service based on the received content metadata and a user metadata, and provides a determined related service.

Abstract: A method for reproducing contents in a device is provided. The method includes identifying whether an event occurs based on a change in distance between a device and another device or a change in power status of the device or the another device, and if the event occurs, performing seamless play of contents between the another device and the device. Accordingly, seamless play may be performed effectively.

Abstract: Provided are a method and an apparatus for predicting a preference rating for content, and a method and an apparatus for selecting sample content in order to predict a preference rating for the content. In the method of predicting a preference rating for the content, a list of users having similar preferences to a target user is extracted from content usage information collected with respect to the same content, and the target user's preference rating for the content is predicted by applying preference rating information of the users with similar preferences to a machine learning algorithm.

Abstract: Provided is data transmission method and apparatus. A method for transmitting data from a first device to a second device includes detecting information on a communication environment of the first device; receiving information on a communication environment of the second device from the second device; and adjusting the QoS of the data transmission in an application layer based on at least one of the information on the communication environment of the first device and the information on the communication environment of the second device. Accordingly, when a sender transmits data to a receiver, the QoS of data transmission can be adjusted by considering communication environments of the sender and the receiver, and thus optimized data transmission can be achieved.

Abstract: Provided is a content recommending method including receiving from second users meta data regarding content belonging to each of the second users having a content preference similar to a content preference of a first user, detecting based on the received meta data a plurality of pieces of recommended content similar to content that the first user is currently using, and outputting information regarding the respective pieces of detected recommended content.

Abstract: A method of generating integrated metadata. The method includes receiving metadata about second contents including content access information for accessing the second contents from one or more content providers, which provide the second contents generated by changing at least one of quality, viewing cost, viewing time, and content providing method of at least one piece of first content; and generating integrated metadata using the received metadata about the second contents.

Abstract: A method of adjusting quality of service (QoS) with respect to changes in a transmission environment of a mobile terminal receiving data based on a stream control transmission protocol (SCTP) session. When the transmission environment of the mobile terminal receiving data based on the SCTP session changes, the mobile terminal transmits link information indicating a new transmission environment to a destination node, and the destination node adjusts the quality of data or the size of a transmission window based on the link information. Thus, without adding separate network devices, the QoS of the data being transmitted can be adjusted with respect to the changed transmission environment, only by adding functions with software to the transmission terminal and the reception terminal. Also, since the destination node manually adjusts the transmission window according to the link information, packet loss can be minimized compared to the conventional congestion control method.

Abstract: Provided is a method of performing communication by using a plurality of network interfaces mounted on a communication terminal apparatus. The method includes allocating different Internet protocol (IP) addresses corresponding to the plurality of network interfaces to a plurality of applications of the communication terminal apparatus, relaying data transmitted or received between the plurality of applications and the plurality of network interfaces based on the allocated IP addresses, and simultaneously performing communication with an external network by the plurality of network interfaces through the relaying of the data.

Abstract: A method and apparatus for managing a neighbor node having a similar characteristic to that of an active node, the method including: generating a neighbor list containing information about at least one neighbor node; selecting at least one parent node from among the at least one neighbor node; determining fitness parameters using a characteristic value of the active node, characteristic values of the at least one neighbor node included in the neighbor list of the active node, and characteristic values of at least one neighbor node included in a neighbor list of each parent node; and updating the neighbor list of the active node according to values of the determined fitness parameters.

Abstract: A method of and apparatus for constructing a user profile using a content tag, a method of recommending digital content by using a user profile including a tag included in the digital content and a preference value for the tag. According to the methods and apparatus, a user profile is generated by using a content tag, and thus the taste of the user according to digital content consumption can be expressed in more varied ways. Also, by suggesting a method of generating a tag from web content, construction of a user profile for digital content having no tag is enabled. Furthermore, a tag extracted from digital content used by a user is included in a profile and it can be used for a variety of purposes, such as expansion of a comparison scope, use of preference keywords, providing of content links, and expansion of search scope.

Abstract: A method and apparatus for generating a recommendation content list by the cooperation of user groups. Sets of content that are classified according to a predetermined criterion are distributed to user terminals within a user terminal group. Assessment information on the content included in the sets of content is collected from the corresponding user terminals, and the recommendation content list is then generated based on the collected assessment information.

Abstract: A method, an apparatus, and a system to provide content using content preference information of users, and a computer readable medium to store a computer readable program to execute the content providing method. The method comprises searching the content preference information to identify one of the users that is likely to prefer the content; and transmitting the content to the selected user.

Abstract: A method and apparatus for discovering a location of an information server using a router advertisement (RA) message that is utilized to automatically set an address in an IPv6 environment and receiving information necessary for determining mobility by using the location of the information server.

Abstract: A method and apparatus that generates an electronic content guide using received metadata associated with content provided from a plurality of servers and which has different formats. The received metadata is collected, the formats of the collected metadata are converted into a same format, and an electronic content guide is generated using the metadata having the same format.

Abstract: An IP packet version converting apparatus and method, the IP packet header converting method includes recognizing one of fields of a header of an IP packet of a first type, in which a value regarding an expansion function is recorded, the expansion function being incompatible between the IP packet of the first type and an IP packet of a second type; and converting the field recognized in one of the fields of the header of the IP packet into a field compatible with the IP packet of the second type.

Abstract: A tunneling service method and system enabling data communication between different networks, in which an address of a tunneling service server used in a client node can be easily designated, the tunneling service method includes: transmitting an information request message, which requests information required for connection to the network, to a dynamic host configuration protocol (DHCP) server selected by the client node; receiving an acknowledgement message, which contains an address of the tunnel router, from the DHCP server selected by the client node; and the client node detecting the address of the tunnel router contained in the acknowledgement message and generating a packet for a tunneling service using the detected address of the tunnel router.

Abstract: A method and apparatus perform a handover of a mobile node with a decreased latency that occurs when the mobile node performs an Internet protocol (IP) configuration. The method of performing a handover of a mobile node includes: when the mobile node is connected to a network before the handover is performed, receiving first information on an IP configuration method to be used in a new network after the handover is performed from an information server (IS); when the mobile node is connected to the new network, receiving second information on the IP configuration method of the new network from a point of attachment (PoA) of the new network; determining whether the first information and the second information are identical; and, if it is determined that the first and second information are identical, performing an IP configuration according to the first information.

Abstract: A method and system for interconnecting an Internet protocol version 4 (IPv4) network and an Internet protocol version 6 (IPv6) network are provided. The system for interconnecting an IPv4 network and an IPv6 network includes IPv4 nodes, IPv6 nodes, and apparatuses for transmitting IP packets between the IPv4 nodes and the IPv6 nodes, wherein the apparatuses for transmitting IP packets share processing state information of the IP packets, using a predetermined message, to distribute their load of processing the IP packets. The IPv4-IPv6 interconnection method involves appropriately arranging NAT-PT apparatuses depending on the size of the networks such that packet processing speed and performance are improved over the use of a single NAT-PT apparatus.