Abstract: A connection destination server instruction apparatus for causing a client terminal to connect to a specific sever in a plurality of servers, including: parameter acquisition means configured to acquire a server parameter on each server; area name acquisition means configured to acquire an area name of a location of the client terminal based on a connection request; connection destination determination means configured, when an area indicated by the area name belongs to a specific area, to regard one or more servers placed in the specific area in the plurality of servers to be candidates of the specific server, and to determine the specific server from the one or more servers that are the candidates by using the server parameter acquired by the parameter acquisition means; and connection destination instruction means configured to transmit, to the client terminal, information of the specific server.

Abstract: A communication system including a first address notification apparatus provided in a first communication network, and a second address notification apparatus provided in a second communication network, wherein the first address notification apparatus includes means that receives an address request from a terminal that can communicate with the first address notification apparatus and with the second address notification apparatus, obtains a source address from the address request, and transmits a response including the source address to the terminal, and the second address notification apparatus includes means that receives an address request from the terminal, obtains a source address from the address request, and transmits a response including the source address to the terminal.

Abstract: A communication controller performs route control in a communication system including a specific network, a first network configured to accommodate a specific device connected to the specific network, a second network provided between the specific network and the first network, and a filter configured to restrict communication according to a predetermined condition. The communication controller includes: a route-setter which, in accordance with routing information defining a path leading from the specific network side to the first network to be branched in the second network, controls the path such that a first path of the branched path is set as a path leading to a predetermined address space including an address of the specific device via the filter, and a second path of the branched path is set as a path leading to the first network wherein the predetermined address space is excluded from an address space of the first network.

Abstract: A search apparatus including: a storage configured to store search target data; and a calculator configured to perform search processing for the search target data based on key data, the search target data being data of a multiway tree structure including an internal node array and a leaf node array, each internal node includes a bit vector representing whether a transition destination is an internal node or a leaf node by a bit, and the calculator is configured to repeatedly execute, until a transition node becomes a leaf node, processing of obtaining a chunk of a predetermined bit length from the key data, determining whether a transition destination from the internal node is an internal node or a leaf node based on a bit, in the bit vector of the accessing internal node, that corresponds to a value of the chunk, and accessing a node of the transition destination.

Abstract: A load distribution apparatus connected, via a network, to a plurality of relay apparatuses that relay communication performed by a terminal, and to the terminal, including: storage means configured to store relay apparatus identifiers that identify each of the plurality of relay apparatuses, installation site information that indicates installation sites of each of the plurality of relay apparatuses, and load information that indicates loads of each of the plurality of relay apparatuses; load management means configured to collect the load information from each of the plurality of relay apparatuses to store the load information in the storage means; selection means configured, when receiving a request from the terminal, to select a relay apparatus for relaying communication performed by the terminal from among the plurality of relay apparatuses based on the installation site information or the load information; and transmission means configured to transmit, to the terminal that transmits the request, a relay

Abstract: A communication control apparatus connected to two terminals and to a relay apparatus that relays P2P communication performed between the two terminals, including: storage means configured to store authority information including a communication method of the P2P communication permitted for each of the two terminals; reception means configured to receive a signaling signal mutually transmitted between the two terminals; and control means configured to control the communication method of the P2P communication based on the authority information when receiving the signaling signal.

Abstract: A communication system including a transmission apparatus and a reception apparatus, the transmission apparatus including: a buffer configured to hold first data to transmit; transmission means configured to transmit the first data to the reception apparatus; reception means configured to receive second data that the reception apparatus returns; comparison means configured to compare the second data with the first data held by the buffer; and control means configured, when a result of the comparison by the comparison means is unmatch, to instruct the transmission means to retransmit the first data.

Abstract: A method for establishing an encrypted communication channel between a first apparatus and a second apparatus by using a session management apparatus. The method includes: establishing a first encrypted communication channel between the session management apparatus and the first apparatus by performing mutual authentication between the session management apparatus and the first apparatus; establishing a second encrypted communication channel between the session management apparatus and the second apparatus by performing mutual authentication between the session management apparatus and the second apparatus; and exchanging key information between the first apparatus and the second apparatus via the first encrypted communication channel and the second encrypted communication channel so as to establish an encrypted communication channel between the first apparatus and the second apparatus.

Abstract: A communication light detecting device interconnecting light transmission paths and collocated therebetween, comprises: an optical coupling body including a core portion for photo coupling with the light transmission paths, and a light extracting portion for extracting a part of the communication light as a leakage light; and a light detecting portion having a light receiving member for receiving the leakage light. The light extracting portion is preferable to possess a lower refractive index than that of the core portion. Besides, the light extracting portion is preferable to include a light detecting use groove with a groove width of 50 ?m or more and 140 ?m or less formed by cutting and separating the core portion. Besides, the light extracting portion is preferable to be the optical coupling body in which outer diameter of the core portion is different from the outer diameter of a core of the light transmission path.

Abstract: A packet transfer apparatus is provided with: storage means configured to store a predetermined search pattern and an address identifying a predetermined apparatus; determination means configured to determine whether predetermined data in a packet received from a network interface matches the search pattern; determination means configured to determine a network interface for outputting the packet using the determination result; replacement means configured to replace an address identifying a destination apparatus of the packet with an address identifying the predetermined apparatus when outputting the packet from a network interface connected to the predetermined apparatus; and packet sending means configured to send the packet to the determined network interface.

Abstract: In a secret information management system for managing a secret information of a user, the secret information is divided into a plurality of divided data by using a secret sharing scheme, such that the secret information can be recovered from a prescribed number of the divided data, and a part of the plurality of divided data is stored into a terminal of the user as user's divided data while a rest of the plurality of divided data are stored into one or more of deposit servers. Then, a plurality of re-divided data different from the plurality of divided data are generated, from a combination of the prescribed number of the divided data among the divided data stored in the deposit servers by using the secret sharing scheme, and a part of the plurality of re-divided data is stored into the terminal as newly generated user's divided data while a rest of the plurality of re-divided data are stored into the deposit servers as newly generated divided data.

Abstract: A mail address acquiring section (423) acquires destination mail addresses one by one from received envelope information; a mail header processing section (424) deletes unnecessary destination mail addresses from a mail header; and an envelope generating section (425) generates envelope information for delivering mail data. In this way, it is possible to delete the unnecessary destination mail addresses from the mail header and to transmit the mail data individually to each of the destination mail addresses included in the envelope information. Accordingly, a sender of an electronic mail can transmit a broadcast mail without leaking mail addresses of others.

Abstract: A storage device sends its storage-device-specific information A to a client apparatus. The client apparatus generates an encryption key P1, using client-apparatus key generation information B1 specific to the client apparatus and the received information A. The client apparatus generates information D? by encrypting its client-apparatus-specific information D, using the encryption key P1, and sends the information D? to the storage device. The storage device stores the information D?. When the storage device authenticates a client apparatus, the storage device has the client apparatus generate information D? through the process as described above and judges whether or not the information D? stored in the storage device matches the information D? generated by the client apparatus being examined.

Abstract: A plurality of original partial data are generated by dividing the original data by the prescribed processing unit bit length, a plurality of random number partial data each having a length less than or equal to the prescribed processing unit bit length are generated in correspondence to the plurality of original partial data, and a plurality of divided partial data that constitute each divided data are generated by using exclusive OR calculation of the original partial data and the random number partial data, each divided partial data having a length equal to the prescribed processing unit bit length. Then, the divided data in the desired number of division are generated from the plurality of divided partial data, such that the original data cannot be ascertained from any one divided data alone but the original data can be recovered from a prescribed number of the divided data among generated divided data.

Abstract: A packet transfer apparatus is provided with: storage means configured to store a predetermined search pattern and an address identifying a predetermined apparatus; determination means configured to determine whether predetermined data in a packet received from a network interface matches the search pattern; determination means configured to determine a network interface for outputting the packet using the determination result; replacement means configured to replace an address identifying a destination apparatus of the packet with an address identifying the predetermined apparatus when outputting the packet from a network interface connected to the predetermined apparatus; and packet sending means configured to send the packet to the determined network interface.

Abstract: A mark issuing server operated by a mark issuer manages mark information collectively. A terminal of a user sends an information providing request to an information providing server of an information provider, and issues a mark issuing request to the mark issuing server on the basis of the information providing request. The information providing server searches for information corresponding to the information providing request from the terminal of the user, and provides the terminal of the user with information including requested information and location information of the mark issuing server. The mark issuing server determines validity of information provided from the information providing server on the basis of the mark issuing request, and sends a mark to the terminal of the user when the validity is verified, and the terminal of the user displays the mark with the information provided from the information providing server.

Abstract: A playlist generating method for generating a playlist of content from received broadcasted data is provided. The playlist generating method includes the steps of: extracting features of broadcast content beforehand, storing the features in a content feature file, and storing information relating to the broadcast content in a content information DB; extracting features from the received data, and storing the features in a data feature file; searching for broadcast content of a predetermined kind by comparing data in the content feature file and data in the data feature file; when a name of the predetermined kind of content is determined, storing data corresponding to the broadcast content of the predetermined kind in a search result file; generating a playlist for the broadcast content of the predetermined kind from the search result file and the content information DB.

Abstract: A searching method of a plurality of routes includes the steps of defining, as an X direction, one direction of a bidirectional transmission line connected to each of the plurality of nodes, and another direction as a Y direction; respecifying an initial node and a terminal node; searching a first shortest route extending from the specified initial node to the specified terminal node; searching a second shortest route for nodes connected to another transmission line in the X direction; searching a third shortest route extending from the specified initial node to the specified terminal node; searching a fourth shortest route for nodes connected to another transmission line in the Y direction; comparing the sum of the X group first route and second route with the sum of the Y group first route and second route; and determining the group having a smaller sum as an optimal route in the comparison.

Abstract: A user registration processor unit registers the user registration information to the database, which includes the public key certification acquired from the certification authority that has jurisdiction over each party by the request from the transaction party including seller, buyer, and transportation company. A transfer registration processor unit changes the access right holder and the cargo owner of the shipment information registered to the database at the start of transaction in compliance with the request for request for changing registration of the party with the digital signature and public key certification attached. A verification processor unit achieves the transfer registration with legal binding power by verifying that the digital signature attached to the request for request for changing registration has been prepared by the private key which makes a pair with the public key certificate registered to the database and receiving the approval of the other party.

Abstract: To charge surely depending on data transmitted through a TCP/IP communication network or the like with a simple configuration. In charging method for data transmission in a communication network in which a plurality of positions are connected to each other through a wide area network, sub-networks being connected to the respective positions through LANs, and sending of data from terminal stations in the sub-networks or receiving of data in the terminal stations being performed, sampling measurements of transmission states of originated data in the LANs and transmission states of incoming data in the LANs are performed in the LANS connected to respective positions, the data of the transmission states subjected to the sampling measurement being periodically transmitted to a predetermined center connected to the communication network, and an amount of charging to each sub-network being decided on the basis of the data of the transmission states transmitted to the center.