Abstract: Embodiments relate to a method and a device for switching media service channels, which minimize the time required to detect the first I frame for a switch channel by utilizing a caching server when switching channels in an IP-based media service, such as IPTV, and at the same time, minimize the time required for synchronization by changing time information in caching information transmitted from the caching server, such that channel switching between media service channels can be performed more quickly.

Abstract: The present disclosure in some embodiments provides a packet loss recovery apparatus and a packet loss recovery method for use in an Internet Protocol Television (IPTV) multicast service, which utilizes additional information received from an IPTV UE for causing a cache server to detect and transmit a lost packet to the IPTV UE to recover the packet loss.

Abstract: A display apparatus and a controlling method of the same are provided. The display apparatus includes: an input unit configured to receive an image from at least one input source; a storage configured to store a program for performing an electronic blackboard function; a display configured to output a screen providing the electronic blackboard function; and a processor configured to control to output, via the display, the received image on at least one area of the screen, and to perform the electronic blackboard function with respect to an entire area of the screen.

Abstract: Embodiments relate to a method and a device for switching media service channels, which minimize the time required to detect the first I frame for a switch channel by utilizing a caching server when switching channels in an IP-based media service, such as IPTV, and at the same time, minimize the time required for synchronization by changing time information in caching information transmitted from the caching server, such that channel switching between media service channels can be performed more quickly.

Abstract: An electronic conference apparatus, a method for controlling the same, and a digital pen are provided. The electronic conference apparatus includes a sensor configured to sense a touch point of a digital pen through first hand writer during a period in which handwriting is input to paper through second hand writer. The electronic conference apparatus further includes a controller configured to generate handwriting information based on the sensed touch point, and a communicator configured to transmit the handwriting information.

Abstract: A display apparatus and a controlling method of the same are provided. The display apparatus includes: an input unit configured to receive an image from at least one input source; a storage configured to store a program for performing an electronic blackboard function; a display configured to output a screen providing the electronic blackboard function; and a processor configured to control to output, via the display, the received image on at least one area of the screen, and to perform the electronic blackboard function with respect to an entire area of the screen.

Abstract: An electronic white board that includes a display configured to display a screen, a first sensor configured to sense a touch on the display, a second sensor configured to sense electromagnetic waves emitted from an object that touches the display, and a controller configured to perform a function that corresponds to the touch that is sensed by any one of the first sensor and the second sensor depending on whether the electromagnetic waves are sensed by the second sensor.

Abstract: A remote user interface (RUI) system, an RUI server, an RUI terminal apparatus and a controlling method are provided. The controlling method of the RUI server includes receiving stream data from an external server in response to streaming service request information being received a requesting RUI terminal apparatus among a plurality of RUI terminal apparatuses, determining whether it is possible perform, in the RUI server, trans-coding of the received stream data, and performing, based on a result of the determining, at least one of trans-coding the stream data, and transmitting trans-coding process information regarding the received stream data to RUI terminal apparatuses that can perform trans-coding among the plurality of RUI terminal apparatuses, other than the requesting RUI terminal apparatus.

Abstract: A multivision display apparatus which enables participants who conduct a video conference to conduct the video conference in a manner in which the participants keep eye contact with each other. The multivision display apparatus includes a plurality of display apparatuses which output images, a bezel provided on an edge of each of the plurality of display apparatuses, a light receiving device which is provided on the bezel positioned at the center of a screen formed with the plurality of display apparatuses to have a vertical length, and receives an image, and an image receiving device which is provided on an upper end of the bezel to be connected to the light receiving device, receives the image received by the light receiving device, generates image data, and transmits the image data to the display apparatuses.

Abstract: An electronic conference apparatus, a method for controlling the same, and a digital pen are provided. The electronic conference apparatus includes a sensor configured to sense a touch point of a digital pen through first hand writer during a period in which handwriting is input to paper through second hand writer. The electronic conference apparatus further includes a controller configured to generate handwriting information based on the sensed touch point, and a communicator configured to transmit the handwriting information.

Abstract: A conference proceeding apparatus a conference proceeding method for advancing a conference are provided. The conference proceeding apparatus includes an interface configured to receive an input, a display configured to display subjects of a conference in response to the interface receiving an input to start the conference, and a voice recognizer configured to recognize voices of participants of the conference. The conference proceeding apparatus further includes a voice-text converter configured to convert the recognized voices into texts, and a controller configured to register, in a record of the conference, the converted texts corresponding to the subjects.

Abstract: A display apparatus and a controlling method of the same are provided. The display apparatus includes: an input unit configured to receive an image from at least one input source; a storage configured to store a program for performing an electronic blackboard function; a display configured to output a screen providing the electronic blackboard function; and a processor configured to control to output, via the display, the received image on at least one area of the screen, and to perform the electronic blackboard function with respect to an entire area of the screen.

Abstract: Systems, apparatuses and methods for a service providing method are provided. The service providing system includes a display apparatus configured to transmit a request signal for a parameter required for moving image reproduction to a server apparatus, and the server apparatus configured to transmit the parameter parsed from a moving image stream to the display apparatus in response to the request signal for the parameter being received from the display apparatus, and transmit the moving image stream to the display apparatus in response to a moving image request signal being received from the display apparatus.

Abstract: A video receiving apparatus of a predetermined first group out of a plurality of groups of video receiving apparatuses which receive a broadcasting or broadcast signal from a broad cast or broadcasting signal transmitting apparatus, the video receiving apparatus including: a communication interface which receives a broadcasting signal from the broadcasting signal transmitting apparatus based on tuning information of a channel that is set for the first group separately from the other groups; a processor which processes the broadcasting signal to display a broadcasting video of the channel based on a channel map that is generated by using the tuning information; and a controller which generates and stores the channel map when receiving the broadcasting signal including one or more basic channels, and if it is determined that another video receiving apparatus included in the first group displays a broadcasting video of an additional channel that is not included in the broadcasting signal transmitted when the sto

Abstract: A remote user interface (RUI) system is provided. The RUI system includes: a first device; a second device configured to call a common application program interface (API) to request a RUI service from a first device; and the first device being configured to process the called common API in response to the request to provide the RUI service to the second device.

Abstract: A method for providing an RUI service is provided. The method includes: providing an RUI service to a plurality of RUI terminal apparatuses; detecting resource are scarce in response to an RUI service request received from a new RUI terminal apparatus; and displaying a resource scarcity message and transmitting the resource scarcity message to at least one RUI terminal apparatus from among the plurality of RUI terminal apparatuses and the new RUI terminal apparatus in response to the detecting resources are scarce.

Abstract: A remote user interface (RUI) system, an RUI server, an RUI terminal apparatus and a controlling method are provided. The controlling method of the RUI server includes receiving stream data from an external server in response to streaming service request information being received a requesting RUI terminal apparatus among a plurality of RUI terminal apparatuses, determining whether it is possible perform, in the RUI server, trans-coding of the received stream data, and performing, based on a result of the determining, at least one of trans-coding the stream data, and transmitting trans-coding process information regarding the received stream data to RUI terminal apparatuses that can perform trans-coding among the plurality of RUI terminal apparatuses, other than the requesting RUI terminal apparatus.

Abstract: The present invention provides a method for reducing channel change time of an IPTV and an IPTV service provision server for implementing the same, which comprise: determining the type of each of individual channels to be provided to a user and the number of additional intraframes required to be inserted into video data to be provided via the channels; inserting the additional intraframes corresponding to the determined number into the video data; encoding the video data; and transmitting the encoded video data to a first router or a second router according to the determined channel type, before receiving a channel request signal from the user.

Abstract: A method and apparatus for controlling a channel for providing an IPTV is disclosed, which is capable of improving use efficiency of network resource and reducing a channel zapping time by controlling a channel type of each channel and a bit rate of video data to be transmitted through each channel, the method comprising (a) determining an optimal channel status vector among channel status vectors to indicate channel types of respective channels, wherein the optimal channel status vector enables a minimum cost corresponding to the sum of an average channel zapping time of respective channels and an average distortion value of video data transmitted through the respective channels; and determining an optimal bit rate at the determined optimal channel status vector; and (b) transmitting the video data at the optimal bit rate through the respective channels.

Abstract: A mobile IPTV system and a method of providing a mobile IPTV service are provided. The mobile IPTV system includes an IPTV head end, a base station, and a mobile terminal. The IPTV head end encodes data for an IPTV stream into a base layer and an enhancement layer and outputs the encoded data. The base station receives the IPTV stream from the IPV head end and partially truncates the enhancement layer of the IPTV stream according to a combination of a modulation technique and a cording rate which are determined in advance and outputs a transmission IPTV stream. The mobile terminal receives the transmission IPTV stream from the base station. Since an IPTV service is provided in view of a user distribution characteristic of a network, user can be efficiently provided with satisfactory QoS.