Abstract: A first confirmation unit performs a first confirmation of confirming presence of a connection to a correspondent node in a first communication layer, presence of a connection to a correspondent node in a second communication layer, and presence of a connection to a correspondent node in a third communication layer. A locating unit locates a failure point in communication based on a result of the first confirmation. An output unit outputs a result of the location.

Abstract: There is provided with a server device which outputs a result of computation processing to an output device, including: a communication unit configured to receive a connection request from an input device; an output device manager configured to store an identifier of the output device; and an connection controller configured to acquire output capability information of the output device, configured to acquire input capability information of the input device, configured to generate secret information which can be input to the input device and can be output by the output device, on the basis of the input capability information and the output capability information, configured to transmit the secret information to the output device, and configured to generate a result of computation processing based on input information received from the input device for transmitting to the output device in a case of receiving the secret information from the input device.

Abstract: A communication apparatus for dividing voice data into a plurality of packets and transmitting the packets to a destination communication apparatus includes a detection unit configured to detect one of predetermined events which are triggers of change processing of a packet division length used for the dividing, a determination unit configured to determine, when the detection unit detects the one of the predetermined events, a possible range of the packet division length after the change processing based on predetermined external information which influence the packet division length, a negotiation unit configured to negotiate the packet division length after the change processing with the destination communication apparatus based on the range determined by the determination unit, and, a control unit configured to control the packet transmission based on the packet division length negotiated by the negotiation unit.

Abstract: There is provided with a communication method including: attempting to receive a media packet from a network; storing a received media packet in a first buffering unit; receiving an FEC packet including redundant data to recover a lost media packet and information which specifies a plurality of media packets associated with the redundant data; storing a received FEC packet in a second buffering unit; selecting the FEC packet from the second buffering unit; dividing FEC operation processing to be carried out using the redundant data included in selected FEC packet and the media packets related to the redundant data into a plurality of processes and sequentially carrying out each process so that one process is carried out every time the receiving of a media packet is attempted; and inserting a media packet recovered through the FEC operation processing in the first buffering unit.

Abstract: A content distribution arbitration apparatus is built in a LAN connected to a plurality of content receivers receiving a content transmitted in multicast from a content distribution server through a network, and includes a first memory to store constraint information indicating the number of channels capable of receiving contents simultaneously in the LAN and a communication band, a second memory to store connection information indicating a distribution channel used by each of the content receivers which receives a content, a message receiver to receive a message for requesting distribution of content by a desired distribution channel, and a controller to determine whether the message is accepted based on request of the message, the constraint information and the connection information.

Abstract: A signal mixer includes: a receiving unit receiving plural multicast packets each containing a DMX signal; a mixing unit mixing the DMX signals contained in the plural multicast packets received by the receiving unit; a generating unit generating a packet containing the DMX signal mixed by the mixing unit; and a transmitting unit transmitting the packet generated by the generating unit.

Abstract: There is provided with a remote control method using a terminal device connected to a first network and an information processing server connected to a second network, including: setting a tunnel between the terminal device and the information processing server; transmitting a broadcast or multicast packet output from service providing servers on the first network to the information processing server via the tunnel to cause the server to find the service providing servers and services provided by the service providing servers; notifying the terminal device of the services found, from the information processing server via the tunnel or the second network; and if execution request of the service is received by the information processing server from the terminal device via the tunnel or the second network, conducting data communication concerning the service between a service providing server providing the service and the information processing server, via the second network.

Abstract: According to an aspect of the present invention, there is provided with a screen transmission device including: an information receiver configured to receive operating condition information indicating an operating condition of a screen display device; a coloring determiner configured to determine coloring of screen data to be displayed on the screen display device based on the operating condition information; a screen data generator configured to generate screen data to be displayed on the screen display device according to the coloring; and a screen data transmitter configured to transmit the screen data to the screen display device.

Abstract: There is provided with a communication apparatus connected to a first network on which service providing servers are disposed, including: a service finder configured to find a service providing server on the first network; and a transmitter configured to transmit an information packet including a header part and a data part to a packet relay apparatus which connects the first network to a second network, wherein the header part contains an address of the found service providing server and a port number at which the found service providing server waits, as a source address and a source port number and an address of an information processing server disposed on the second network and a port number at which the information processing server waits, as a destination address and a destination port number, and the data part contains service identification information which identifies a service provided by the found service providing server.

Abstract: The name resolution system has a name registration intermediary device for intermediating between a name resolution server and a communication device which transmits a registration request for registering a set of a name and an address of the communication device as an address information of the communication device to the name resolution server, and a name registration intermediary device for intermediating between a name resolution server and a communication device which transmits a name resolution request for requesting a name resolution of a desired communication device to the name resolution server, which convert an original name of the communication device contained in the request into another name by using an encryption key.

Abstract: Image control involves receiving source images defined with respect to respective source coordinate systems from source image generators also respectively associated with source IDs. The source images are composed to generate a composite image defined with respect to a composed coordinate system, and the composed image is sent to a viewer which displays the composed image and outputs an HID signal which indicates information defined with respect to the composed coordinate system. A layout manager stores source IDs respectively associated with layout information including position and size of at least one of the source images. An image composer composes the source images according to the layout information. An analyzer analyzes the HID signal for editing layout information stored in the layout manager, and determines a source ID associated with a source image according to the edited layout information.

Abstract: An information processing terminal connectable to a WWW (World Wide Web) server via a public network includes a storage unit that stores content data including image information or sound information with identification information of the content data, an acquiring unit that acquires identification information of content data from the WWW server, a retrieving unit that retrieves content data corresponding to the identification information acquired by the acquiring unit from the storage unit, and a presenting unit that presents the content data retrieved by the retrieving unit.

Abstract: Disclosed is a communication apparatus including: an estimating unit which estimates a first wireless channel state from a first frame wirelessly received and a second wireless channel state from a second frame wirelessly received after the first frame; a storing unit capable of storing the first wireless channel state as a past wireless channel state; a comparing unit which compares a difference between the second wireless channel state and the past wireless channel state with a threshold value; and a processing unit which discards the second frame when the difference is larger than the threshold value.

Abstract: An access point apparatus includes a first communication unit sending a radio terminal a beacon representing the availability of an access point apparatus, and receiving a connection request signal from the radio terminal in response to the beacon; a second communication unit communicating with a control unit which controls a load state of the access point apparatus via the first communication unit; a memory storing connection control information received from the control unit via the second communication unit, the connection control information depending upon the load state of the access point apparatus; and a connection control unit controlling the operation of the first communication unit on the basis of the connection control information.

Abstract: A communication resource management scheme capable of guaranteeing the communication quality with respect to the flow while not requiring the processing for each flow to nodes other than edge nodes is disclosed. The edge node stores an information for obtaining an available amount of communication resources that can be newly allocated in the network to one set of flows which share at least a route from that edge node to an egress node of the network.

Abstract: A communication resource management scheme capable of guaranteeing the communication quality with respect to the flow while not requiring the processing for each flow to nodes other than edge nodes is disclosed. The edge node stores an information for obtaining an available amount of communication resources that can be newly allocated in the network to one set of flows which share at least a route from that edge node to an egress node of the network.

Abstract: A communication resource management scheme capable of guaranteeing the communication quality with respect to the flow while not requiring the processing for each flow to nodes other than edge nodes is disclosed. The edge node stores an information for obtaining an available amount of communication resources that can be newly allocated in the network to one set of flows which share at least a route from that edge node to an egress node of the network.

Abstract: A packet transfer method at a node device in which the virtual channel merging is unnecessary at the label switch router even when the communication resource reservation or the high priority transfer is requested is disclosed. At each node, one or more virtual channels for a specific flow are set up toward all receivers regardless of whether each receiver requested a communication quality for the specific flow or not, upon receiving a message used in a procedure for reserving the communication quality for the specific flow that is transmitted from an upstream side to a downstream side on a route of the specific flow toward the receivers.