| Patent application number | Description | Published |
|---|
| 20080275952 | Overlay Network System and Service Providing Method - In an overlay network system in which at least one node is mapped in a hash space by distributed hash table techniques, each node having a nods identifier obtained by hashing identification information of the own node, at least one service concerning all the nodes is provided. Each node includes a storage unit and a controller. The storage unit stores a service name and a service body of the service. The controller searches for a current service provider node using a service key obtained by hashing the service name, checks whether the own node is allowed to take over the service if a distance between the node identifier of the own node and the service key is less than a distance between the node identifier of the current service provider node and the service key, and invokes the service body to provide the service if the takeover is permitted. | 11-06-2008 |
| 20090106391 | Information delivery apparatus, information delivery method, and information delivery system - An information delivery apparatus is disclosed which delivers update information about a specific resource designated by a terminal to the terminal, the information delivery apparatus includes: a delivery section configured to receive from the terminal a request to deliver the update information about the resource and for delivering the update information to the terminal; and an update information generation section configured to generate the update information about the resource upon detection of an update of the resource, before outputting the generated update information to the delivery section; wherein, the moment the update information is acquired from the update information generation section, the delivery section delivers the acquired update information to the terminal. | 04-23-2009 |
| 20090113482 | PROGRAM GUIDE PROVIDING SYSTEM, PROGRAM GUIDE PROVIDING APPARATUS, PROGRAM GUIDE PROVIDING METHOD, AND PROGRAM GUIDE PROVIDING PROGRAM - Disclosed herein is a program guide providing system including: a terminal; a content providing server including a service providing section for providing programs and a related service to the terminal in response to a request from the terminal; a SIP proxy server; a program guide providing server including a communication history acquisition section for acquiring a communication history between the content providing server and the terminal, a communication history storage section, an audience situation calculation section for calculating an audience situation concerning each of the programs based on the communication history, a program guide generation section for generating a program guide in which each program is assigned an indicator based on the audience situation, and a program guide providing section for providing the program guide to the terminal; and an NGN to which the terminal, the content providing server, the SIP proxy server, and the program guide providing server are connected. | 04-30-2009 |
| 20090119401 | CONTENT PROVIDING SYSTEM, MONITORING SERVER, AND SIP PROXY SERVER - A content providing system that provides content to a user terminal via a network includes a content providing server that is connected to the network and provides content, an SIP proxy server that is connected to the network and relays transmission and reception between the user terminal and the content providing server, and a monitoring server that is connected to the network and stores monitoring information regarding transmission and reception between the user terminal and the content providing server, the monitoring information being transmitted from the SIP proxy server. | 05-07-2009 |
| 20090192999 | SEARCH SERVICE PROVIDING SYSTEM AND SEARCH SERVICE PROVIDING METHOD - A search service providing system provides, on an overlay network configured such that at least one node is assigned on a hash space by a distributed hash table technique, a search service for searching at least one resource shared on the overlay network. The node includes: an information collecting unit that collects the resource; a resource database in which the resource collected by the information collecting unit is stored; and a search service providing unit that when a search request for the resource shared on the overlay network is received from a node other than an own node, searches the content of the resource stored in the resource database and outputs a result of the search to the node which has requested the search. | 07-30-2009 |
| 20100020807 | COMMUNICATION NODE, COMMUNICATION METHOD, AND COMPUTER PROGRAM - A communication node includes: a routing information storing unit configured to store, as routing information, node information indicating a succeeding node and a preceding node in a ring network using a distributed hash table; and a routing information updating unit configured to update the node information, wherein when the succeeding node becomes inaccessible, the routing information updating unit acquires node information from one predetermined node accessible on the network at all times, determines, based on the acquired node information, whether the node that has supplied the node information satisfies a determination criterion for becoming its succeeding node, and designates the node that has supplied the node information as its succeeding node if the determination criterion is satisfied, while acquires node information from the preceding node indicated by the acquired node information if the determination criterion is not satisfied, and determines whether the node that has supplied the node information satisfies the determination criterion. | 01-28-2010 |
