Abstract: Disclosed are an OFDM transmission method and apparatus. In the present invention, channel bonding information includes at least one of information indicating whether or not a channel through which the transport frame is transmitted is a bonded channel, information indicating how many channels form the bonded channel, and information about a transmission frequency of each of the bonded channels.

Abstract: A method and apparatus for transmitting and receiving Ultra High Definition (UHD) broadcasting service in a digital broadcasting system are provided. The method includes receiving a TS through a transport channel, determining whether or not the TS includes information about an association relation with other TSs, analyzing the information about the association relation from the TS, determining whether or not the TS includes information about a program provided in association with the other TSs based on the information about the association relation, extracting the information about the program from the TS, and obtaining the program based on the information about the program. In accordance with the present invention, high definition broadcasting service can be provided because a broadcasting program having a great transmission bandwidth can be transmitted and received in a digital broadcasting system.

Abstract: Disclosed herein is an apparatus and method that enable data sharing to be performed between short-range/middle-range/long-range mobile terminals by minimizing specific intervention of a user. The apparatus includes a social relationship management unit for managing social network group information formed by a user while the user utilizes a social network service. A device recognition and authentication unit identifies a mobile terminal of another party attempting to make a connection and allocates a data communication channel for data exchange, based on device information received from the mobile terminal of the other party attempting to make a connection and the social network group information. A shared data setting unit sets data to be shared with the mobile terminal of the other party between which the data communication channel has been established. A shared data transmission unit transmits the data to be shared to the mobile terminal of the other party.

Abstract: A demultiplexing apparatus, a multiplexing apparatus, and a multi-channel transmission and reception method using the same are provided. The demultiplexing apparatus includes a broadcasting data reception unit for separating a broadcasting data stream into N input packets, an output packet generation unit for generating (N+1) output packets by connecting a pre-header, including a field for multi-channel transmission, with each of the N input packets, and a packet distribution unit for distributing the (N+1) output packets over at least two channels.

Abstract: Disclosed are a multi-hop MIMO system and method. The multi-hop MIMO system according to an exemplary embodiment of the present invention includes: a server including a plurality of virtual machines; one remote screen device first connected to the server through at least one virtual machine of the plurality of virtual machines, receiving screen data from the server in a unicast scheme, and driven as a multicast server; and a plurality of different remote screen devices connected to the server through the at least one virtual machine, existing on a sub network where the one remote screen device exist, operating as multicast clients, receiving the screen data from the server or the one remote screen device in a multicast scheme, wherein the one remote screen device and the plurality of different remote screen devices simultaneously output the same screen data.

Abstract: An apparatus for controlling load allocation in a cluster system includes a cluster module having a plurality of target nodes and a cluster power management module. The cluster power management module analyzes resource usage of the target nodes by monitoring the load states of the target nodes. The cluster power management module adaptively allocates loads to the target nodes based on the analyzed resource usage and N allocation thresholds settled in response to an increase of the analyzed resource usage. The cluster power management module controls the target nodes so that the power state can be changed with the adaptively allocated loads.

Abstract: Disclosed herein are a server and method for providing collaboration service, and a sociality management server. The server includes a service provision unit and a space construction unit. The service provision unit sets up collaboration service corresponding to the results of combining functions of at least two collaboration terminals based on sociality values corresponding to the at least two collaboration terminals. The space construction unit constructs a service provision device space via which the collaboration service is to be provided. The service provision unit provides the collaboration service to the at least two collaboration terminals via the service provision device space.

Abstract: Disclosed are a method and an apparatus for a scalable broadcast. The method includes scalably dividing a broadcast frequency band into segments, scalably dividing a video image into segments, and linking the segment of the broadcast frequency band to the scalably divided video image, and broadcasting the linked segments to at least one receiving apparatus.

Abstract: A terminal for handover using channel characteristics and a control method thereof are provided. Reception level information is received from a neighboring base station. A state of the neighboring base station having transmitted the reception level information is measured. A corresponding neighboring base station to which the handover is possible is selected using a corrected reception level value by computing the corrected reception level value using a value of the reception level information received from the neighboring base station and a channel characteristic value of the neighboring base station. A better neighboring base station for the handover can be selected by applying a reception level based on detected channel characteristics (quality) of a corresponding neighboring base station even when an actually measured reception level of the neighboring base station is high.

Abstract: A method and apparatus for transmitting and receiving Ultra High Definition (UHD) broadcasting service in a digital broadcasting system are provided. The method includes receiving a TS through a transport channel, determining whether or not the TS includes information about an association relation with other TSs, analyzing the information about the association relation from the TS, determining whether or not the TS includes information about a program provided in association with the other TSs based on the information about the association relation, extracting the information about the program from the TS, and obtaining the program based on the information about the program. In accordance with the present invention, high definition broadcasting service can be provided because a broadcasting program having a great transmission bandwidth can be transmitted and received in a digital broadcasting system.

Abstract: A method for transmitting data using a downlink dummy control block and a system using the same. The method includes receiving, by a Base Station, data to be broadcast to Mobile Stations (MSs) from a mobile communication service provider server, and inserting, by the BS, the received data into a padding bit field within a downlink dummy control block and broadcasting the downlink dummy control block to the MSs.

Abstract: Provided is apparatus and method for transforming cable channel. The apparatus includes a data mixing unit for receiving and mixing a band data and a first broadband data, to thereby generate a second broadband data of a broadband cable channel, and a channel adapting unit for dividing a band data from the second broadband data received through the broadband cable channel, bypassing the second broadband data to a first subscriber apparatus and transmitting the band data to a second subscriber apparatus.

Abstract: Disclosed are a focus regulating apparatus for use with a projector and a projector using the same. The apparatus has a structure which is designed to overcome asymmetry in focus regulation due to the optical characteristics of the projector. The focus regulating apparatus of a projector includes: a focus regulator, which is provided in a projection lens unit of a projector main body so that the focus can be regulated by rotating a lens barrel of the projection lens unit; and an actuator, which gears with the focus regulator and moves rectilinearly with respect to the projector main body, thereby causing the focus regulator to rotate. The rotation of the focus regulator is varied when the actuator rectilinearly moves at a constant speed. The apparatus thus enables an asymmetry in focus regulation to be overcome when a screen size for the projector is adjusted.

Abstract: A method provides achieving a phone call function of a tablet terminal using a portable terminal. The method includes performing synchronization with the portable terminal when the tablet terminal receives a request for a call connection from a wireless network. After making the call connection to the wireless network, the tablet terminal transmit voice signals received from the wireless network to the portable terminal and transmit voice signals generated by the portable terminal to the wireless network. Upon terminating the call connection with the wireless network, the tablet terminal terminates the communication with the portable terminal.

Abstract: Disclosed are a multi-hop MIMO system and method. The multi-hop MIMO system according to an exemplary embodiment of the present invention includes: a server including a plurality of virtual machines; one remote screen device first connected to the server through at least one virtual machine of the plurality of virtual machines, receiving screen data from the server in a unicast scheme, and driven as a multicast server; and a plurality of different remote screen devices connected to the server through the at least one virtual machine, existing on a sub network where the one remote screen device exist, operating as multicast clients, receiving the screen data from the server or the one remote screen device in a multicast scheme, wherein the one remote screen device and the plurality of different remote screen devices simultaneously output the same screen data.

Abstract: A method for transmitting a multi-view program composed of a plurality of video streams in a digital broadcasting system includes generating information representing that the program is a multi-view program, information on a composition of the multi-view program and information on the plurality of physical channels through which the multi-view program is transmitted; and transmitting the multi-view program and the generated information through the plurality of physical channels.

Abstract: Disclosed are a method and apparatus of scheduling a bandwidth in a cable network. The method includes receiving variable information set according to a condition of a network, calculating a packet time slot value in which a delay time gain is maximized using the received variable information; setting an algorithm allocating a bandwidth between channels of the network using the packet time slot value, and operating a Cable Modem Termination System (CMTS) according to the algorithm.

Abstract: The present invention relates to an apparatus and method for allocating and releasing an imaging device in a virtualization system. An image processing management module in the virtualization system, in response to an allocation command or a release command from the device management module, generates or removes an image processing module corresponding to the imaging device, and, upon generating the image processing module, transmits connection information on the image processing module to the imaging device so that image data from the virtual machine is transmitted and received between the imaging device and the image processing module. According to the present invention, it can be possible to establish a computing environment appropriate for an environment using various imaging devices in a ubiquitous environment by constituting a virtualization computing environment that allows a user to dynamically select an imaging device in a server where a plurality of imaging devices have been registered.

Abstract: A packet transmission device of a physical layer receives a plurality of packets from a media access control layer that is an upper layer of the physical layer, and detects a packet including a sync message from the packets. The packet transmission device receives first time information for synchronization from the media access control layer, inserts first time information into the sync message, and transmits packets at a predetermined data rate.

Abstract: Provided is a method for providing a service based on a subscriber level. The method includes the steps of: a) initializing a Data Back-off Start (DBS) value and a Data Back-off End (DBE) value; b) acquiring subscriber information from an external management system; c) acquiring service flow identifier (SFID) and service identifier (SID) information from an object model for quality of service (QoS) based on information on Service Class Name (SCN) of the subscriber acquired in the step b); d) creating manufacturing automation protocol (MAP) according to a priority by grasping the SID information based on the service level and controlling the DBS value and the DBE value of a cable modem (CM); and e) transmitting the created MAP to the cable modem.