Abstract: A terminal apparatus provides shared profile information that is selectively received from a server based on a relationship between a first user and a second user, according to whether information of the second user is stored in the terminal apparatus of the first user as local profile information and information of the first user is stored in the terminal apparatus of the second user as the local profile information. Accordingly, a phonebook service for desired profile information is provided only for users in a buddy relationship sharing contact information with each other.

Abstract: A method and apparatus for adaptively transmitting and receiving media data to a streaming environment by segmenting into segments a plurality of media data, which is generated by encoding content to have different qualities.

Abstract: A terminal apparatus provides shared profile information that is selectively received from a server based on a relationship between a first user and a second user, according to whether information of the second user is stored in the terminal apparatus of the first user as local profile information and information of the first user is stored in the terminal apparatus of the second user as the local profile information. Accordingly, a phonebook service for desired profile information is provided only for users in a buddy relationship sharing contact information with each other.

Abstract: A terminal apparatus provides shared profile information that is selectively received from a server based on a relationship between a first user and a second user, according to whether information of the second user is stored in the terminal apparatus of the first user as local profile information and information of the first user is stored in the terminal apparatus of the second user as the local profile information. Accordingly, a phonebook service for desired profile information is provided only for users in a buddy relationship sharing contact information with each other.

Abstract: A terminal apparatus provides shared profile information that is selectively received from a server based on a relationship between a first user and a second user, according to whether information of the second user is stored in the terminal apparatus of the first user as local profile information and information of the first user is stored in the terminal apparatus of the second user as the local profile information. Accordingly, a phonebook service for desired profile information is provided only for users in a buddy relationship sharing contact information with each other.

Abstract: Provided are a method and apparatus for receiving and providing data. The method of receiving data includes: receiving first information including information about a first interval of a plurality of media data generated by encoding content in different qualities; acquiring renewal time information indicating a point of time for a first file to be renewed by using the first information; and receiving second information comprising information about a second interval of the plurality of media data based on the renewal time information.

Abstract: A method and apparatus for reproducing media data are provided. The method includes: receiving a first file including information about a period of first content and information about a period of second content; receiving and reproducing media data of the first content based on the received first file; stopping reproducing of the media data of the first content and receiving and reproducing media data of the second content based on the first file; and receiving and reproducing the media data of the first content when the reproducing the media data of the second content is completed, wherein the information about the period of the second content includes location information about the second media data of the second content or location information of a second file including the location information about the second media data of the second content.

Abstract: A method and apparatus for transmitting and receiving data are provided. In the method of receiving data, at least one of a plurality of media data generated by encoding content to have different qualities is received, the plurality of media data each including at least one segment; location information indicating a randomly accessible point of each of the at least one segment is obtained; and random accessing is provided on the received media data, based on the location information.

Abstract: A method and apparatus are provided for performing adaptive streaming according to a streaming environment based on information about a plurality of elements for determining qualities of a plurality of media data with respect to the same content.

Abstract: A streaming method and apparatus, in which information regarding a plurality of chapters of content is inserted into a media presentation description that includes information regarding a plurality of media data generated by encoding the content so as to have different qualities, and then, streaming is performed based on the information.

Abstract: A terminal apparatus provides shared profile information that is selectively received from a server based on a relationship between a first user and a second user, according to whether information of the second user is stored in the terminal apparatus of the first user as local profile information and information of the first user is stored in the terminal apparatus of the second user as the local profile information. Accordingly, a phonebook service for desired profile information is provided only for users in a buddy relationship sharing contact information with each other.

Abstract: A contents reproducing method and apparatus for adjusting a contents reproducing time are provided. The method includes: receiving a target reproducing time and user preference information, the user preference information including at least one of user preferred contents sections or scenes from an external source; obtaining contents reproducing data for adjusting a reproducing speed of the contents based on the target reproducing time and the user preference information; and adjusting the reproducing speed of the contents based on the reproducing data.

Abstract: A security method and system for maintaining security between a client and a server and a computer-readable medium storing a computer program for executing the security method are provided. The security system includes a memory which stores current authentication information; an authentication information transmission module which transmits the current authentication information to a server and receives latest authentication information from the server; an authentication information management module which authenticates the latest authentication information using the current authentication information and updates the current authentication information with the latest authentication information if the latest authentication information is successfully authenticated; and an authentication module which authenticates data received from the server using the updated current authentication information stored in the memory.

Abstract: A method and apparatus for providing a trick play service in a hypertext transfer protocol (HTTP) adaptive streaming (HAS) architecture for adaptively streaming media data according to fluctuation of a streaming environment are provided. The method at a server includes: generating a media presentation description (MPD) file including information about at least one piece of trick play data; transmitting the MPD file to a client; and transmitting the at least one piece of trick play data to the client in response to a request by the client based on the MPD file. The method at a client includes: receiving a media presentation description (MPD) file including information about at least one piece of trick play data; and receiving the at least one piece of trick play data from a server based on the MPD file.

Abstract: A method and apparatus are provided for transmitting and receiving information in an Internet Protocol (IP) network. In the method of allowing a client to receive information from a server, the client requests that a third client in a subnet to which the client belongs transmit the information, and receives the information that the third client transmits in response to the request. Accordingly, it is possible to quickly share information for a broadcast, which the server provides, while minimizing the load on the server.

Abstract: A system, apparatus, and method of providing a personal broadcasting service according to scheduling are provided. The system for providing a personal broadcasting service includes a producer client which produces and transmits a broadcasting schedule, a broadcasting server which establishes a broadcasting channel according to the broadcasting schedule and provides broadcasting content produced by the producer client through the broadcasting channel, and a viewer client which receives the broadcasting content through the broadcasting channel.

Abstract: An information file pertaining to media data includes reproduction rating information for each of a plurality of segments. The information file is used by a client to determine what segment or segments to request from a server. The server responds to the request by sending the segment or segments to the client. Since the reproduction rating information may be provided for each of the segments, the selection of the segment or segments by the client can take into account a reproduction rating threshold.

Abstract: A method of controlling at least one home network device, in which a home network periodically connects to a rich site summary (RSS) server, fetches a control command for the at least one home network device, and controls the at least one home network device on the basis of the fetched control command.

Abstract: A method and apparatus are provided for performing adaptive streaming according to a streaming environment based on information about a plurality of elements for determining qualities of a plurality of media data with respect to the same content.

Abstract: A method and apparatus for providing a trick play service in a hypertext transfer protocol (HTTP) adaptive streaming (HAS) architecture for adaptively streaming media data according to fluctuation of a streaming environment are provided. The method at a server includes: generating a media presentation description (MPD) file including information about at least one piece of trick play data; transmitting the MPD file to a client; and transmitting the at least one piece of trick play data to the client in response to a request by the client based on the MPD file. The method at a client includes: receiving a media presentation description (MPD) file including information about at least one piece of trick play data; and receiving the at least one piece of trick play data from a server based on the MPD file.