Abstract: Apparatuses for audience measurement on various user devices and data analysis methods for audience measurement on various user devices are disclosed. An audience measurement apparatus in an N-screen environment may comprise a gathering part configured to collect viewing data including screen images captured from a viewing device and time information on times at which the screen images are captured; and an analysis part configured to obtain information necessary for audience measurement by analyzing the collected viewing data.

Abstract: A network testing system according to an exemplary embodiment of the present invention includes: a radio wave transmitting apparatus which transmits a standard wave including timing data; a first network testing apparatus which performs time synchronization based on the timing data at the time of receiving the standard wave and generates first timing information; and a second network testing apparatus which performs time synchronization based on the timing data at the time of receiving the standard wave, generates second timing information, and transmits a network test reply and the second timing information for network testing at the time of receiving a network test request and the first timing information from the first network testing apparatus to perform the network testing along with the first network testing apparatus.

Abstract: A traffic control apparatus is provided which includes an interface connector to transmit/receive an Internet Protocol (IP) packet to/from an external circuit, a frame generator to receive the IP packet through the interface connector and to generate a Media Access Control (MAC) frame, and a network processor to transmit/receive the IP packet to/from the frame generator, to execute at least one programmable application, and to identify and classify the at least one programmable application.

Abstract: A traffic control apparatus is provided which includes an interface connector to transmit/receive an Internet Protocol (IP) packet to/from an external circuit, a frame generator to receive the IP packet through the interface connector and to generate a Media Access Control (MAC) frame, and a network processor to transmit/receive the IP packet to/from the frame generator, to execute at least one programmable application, and to identify and classify the at least one programmable application.

Abstract: Disclosed is a method for determining a transmission path of a router system, in which a forwarding table of the router system is managed with a dualized address system including an absolute address indicating a physical port and a relative address indicating the place of the absolute address. Only the absolute address in a relative forwarding table can be changed without changing the relative address when traffic congestion occurs on a certain port of the router system or when load-balancing is needed, so that the router can actively cope with a real-time change of a destination address.

Abstract: A terminal receives information of files required for a service and address information of a file agent storing the files from a server connected via a network, and downloads the files from the file agent corresponding to the address information received from the server.

Abstract: Disclosed is a method for determining a transmission path of a router system, in which a forwarding table of the router system is managed with a dualized address system including an absolute address indicating a physical port and a relative address indicating the place of the absolute address. Only the absolute address in a relative forwarding table can be changed without changing the relative address when traffic congestion occurs on a certain port of the router system or when load-balancing is needed, so that the router can actively cope with a real-time change of a destination address.

Abstract: An improved mediate server and real time delivery method between different networks which is capable of receiving various video services on the low speed Internet in real time after a predetermined time, and by which it is possible to receive various video services based on the service reserving system, which includes a service browser directly connected to a high speed network server for transferring a server address, service type, and selection list by receiving a service browsing request from a user when a selection is received from the user, receiving a result whether a mediate function is needed, and providing a service, a real time controller for transferring a result to the service browser when there is not a mediate function by judging whether the mediate function is needed by receiving a server address, service type, and selection list from the service browser, determining the buffer size after measuring a traffic based on the connection to the server when the mediate function is needed, allocating t