Abstract: There is provided a network control device capable of surely distributing a content even when a relay function of one of the nodes contained in a network stops, without affecting the process in nodes below the node and while improving the re-liability of the network system itself. When controlling a node contained in a network system including a server and a plurality of nodes constituting a plurality of hierarchies and connected to one another, wherein a content is distributed from the server to the respective nodes, it is checked whether a content relay function in a node located at the uplink with respect to the node in the content distribution has stopped. When the stop of the relay function is detected, control is performed so that the consumption speed of the content accumulated in the lower node in the process executed in the node is smaller than the consumption speed before the relay function has stopped.

Abstract: A first node device transmits to a second node device unique identification information corresponding to specific common information, receives from the information saving node device the relevant information regarding the information saving node device, and requests to a selected information saving node device delivery of the specific common information, the second node device searches the node information and, in a case where there is node information, transfers the identification information to the information saving node device, which is indicated by node information, and the information saving node device, in a case where the transmission of the specific common information indicated by the identification information is available, transmits to the first node device the relevant information regarding the information saving node device, and, in a case where delivery request for the specific common information is received from the first node device, delivers specific common information.

Abstract: The present invention provides a distribution system in which even in the case where the content distributability varies among content holders, desired content can be promptly and efficiently received by a requester. To index information recorded in a root node or cache node so that it can be referred to from the requester, in addition to content ID and IP address of a content holder, easiness information indicative of easiness of distribution of content from the content holder are added. When the requester determines a content holder as a distribution source, a content holder having high distributability is preferentially selected with reference to the easiness information and content is distributed from the selected content holder.

Abstract: An apparatus is disclosed for displaying to a viewer an image stereoscopically representing a three-dimensional object to be displayed. The apparatus includes: an emitter emitting light, having an intensity modulating section capable of intensity modulation for modulating an intensity of the light emitted from the emitter; a wavefront-curvature modulator capable of wavefront-curvature modulation for modulating a curvature of wavefront of the light emitted from the emitter; and a controller controlling the intensity modulation and the wavefront-curvature modulation, based on a luminance signal indicative of luminance of the image, and a depth signal indicative of depth of the image. The depth signal is a signal corresponding to depth data produced in a rendering process for the object to be displayed.

Abstract: It is the object of the present invention to provide a processing apparatus, processing method, processing program and recording medium capable of reducing the concentration of load upstream in the communication path of a network, and to improve the efficiency of a network system.

Abstract: A node device which participates in an overlay network formed by participation of all or part of a plurality of node devices which are connected to each other via a communication device. The node device includes a search information transmission device, a reply information receiving device, a communication load information device, a communication load comparison device, a node selection device and a participation request information transmission device. The search information transmission device transmits search information to search a node device transmitted to an information processing device connected to the communication device. The receiving device receives information replied from the plurality of node devices. The comparison device compares information regarding communication load in each of the communication routes. The selection device selects a node device on the basis of comparison result by the comparison device.

Abstract: To provide a content distribution system, method, and the like wherein, in a distribution aspect in which, being made a tree-shaped hierarchical structure, content data are forwarded from a content distribution apparatus at an apex to a downstream terminal apparatus, there is no need to separately provide a connection management server for managing the tree-shaped hierarchical structure. In a content distribution system in which a content distribution apparatus and a plurality of terminal apparatus participate, when configuring a distribution aspect in which the terminal apparatus are logically connected in a tree-shaped hierarchical structure, with the content distribution apparatus as an apex, and content data are sequentially forwarded from the content distribution apparatus to a downstream terminal apparatus, one terminal apparatus among the plurality of terminal apparatus participating in the content distribution system is caused to manage a connection condition of the tree-shaped hierarchical structure.

Abstract: In a first node in a system having nodes connected to each other as a network, request information including identification information and request number of location information indicating a location in the network of information saving nodes is transmitted to a second node. In the second node, the location information and identification information are saved. At least the location information whose number corresponds to the request number is transmitted to the first node when the number of the saved location information meets the request number. Otherwise, the location information whose number corresponds to the number of the saved location information is transmitted to the first node. The received request information is transferred when the second node itself is not a management node, to a node interposed between the second node and the management node, or to the management node when there is no node therebetween.

Abstract: A connection state control device is provided that can promptly perform a reproducing operation by smoothly switching channels at each node and reduce the load on the management server in a case where operations are performed so as to sequentially change distribution information to be received at each node in a network system having a tree structure. A node receives content being distributed over a network, and performs an operation of reproducing the received content. When the node is to receive different content being distributed over a different network, the node is connected to the different network. After that, the node receives and reproduces the different content. The node continues to receive the original content but suspends the operation of reproducing the original content after connected to the different network.

Abstract: The apparatus includes effective bandwidth information obtaining means for obtaining effective bandwidth information indicative of an effective bandwidth of each of the communication paths attached to the receiving devices so that each of the receiving devices is connected to the receiving device or the distributing device at the higher hierarchical level; effective bandwidth comparing means for comparing the effective bandwidths of the communication paths; and connection mode setting means for setting a mode of connection among the devices on the basis of a result of comparison of the effective bandwidth comparing means.

Abstract: It is the object of the present invention to provide a processing apparatus, a tree-type network system, processing program and recording method that are capable of performing requests to a higher-order apparatus at the same time, while reducing the load that is concentrated in the communication path upstream in the network. One node apparatus which is provided with tree-type network system including broadcasting apparatus sending inquiry information as request-reception-begin data etc. for requesting sending response message as select-node information etc.

Abstract: To provide a content distribution system, method, and the like wherein, in a distribution aspect in which, being made a tree-shaped hierarchical structure, content data are forwarded from a content distribution apparatus at an apex to a downstream terminal apparatus, there is no need to separately provide a connection management server for managing the tree-shaped hierarchical structure. In a content distribution system in which a content distribution apparatus and a plurality of terminal apparatus participate, when configuring a distribution aspect in which the terminal apparatus are logically connected in a tree-shaped hierarchical structure, with the content distribution apparatus as an apex, and content data are sequentially forwarded from the content distribution apparatus to a downstream terminal apparatus, one terminal apparatus among the plurality of terminal apparatus participating in the content distribution system is caused to manage a connection condition of the tree-shaped hierarchical structure.

Abstract: The present invention enables replicas of the necessary number in a distribution system to be disposed autonomously in proper positions in the distribution system without providing a server or the like and enables necessary content to be distributed more efficiently. One or plural pieces of content is/are recorded in nodes N1 to N4 as components of a distribution system in which content C1 to C4 to be distributed are directly transmitted/received among the nodes N via a network. An evaluation value having a value based on at least the number of distribution requests is generated and stored for each piece of the content C1 to C4.

Abstract: The present invention provides a distribution system in which even in the case where the content distributability varies among content holders, desired content can be promptly and efficiently received by a requester. To index information recorded in a root node or cache node so that it can be referred to from the requester, in addition to content ID and IP address of a content holder, easiness information indicative of easiness of distribution of content from the content holder are added. When the requester determines a content holder as a distribution source, a content holder having high distributability is preferentially selected with reference to the easiness information and content is distributed from the selected content holder.

Abstract: In an information delivery system including a plurality of node devices connected each other to thereby configure a network, a first node device includes a device for transmitting request information based on unique identification information corresponding to specific common information and request number information indicative of request number of node information to a second node device to thereby request transmission of the node information concerning a plurality of information saving node devices, included in the plurality of node devices and saving specific common information, which is specified out of common information to be shared among the plurality of node devices, and the second node device includes : a device for searching node information corresponding to the identification information and indicated by request number information included in the request information as many as request number upon receipt of request for the specific common information and a device for transmitting the node informati

Abstract: A first node device transmits to a second node device unique identification information corresponding to specific common information, receives from the information saving node device the relevant information regarding the information saving node device, and requests to a selected information saving node device delivery of the specific common information, the second node device searches the node information and, in a case where there is node information, transfers the identification information to the information saving node device, which is indicated by node information, and the information saving node device, in a case where the transmission of the specific common information indicated by the identification information is available, transmits to the first node device the relevant information regarding the information saving node device, and, in a case where delivery request for the specific common information is received from the first node device, delivers specific common information.

Abstract: A node device which participates in an overlay network formed by participation of all or part of a plurality of node devices which are connected each other via a communication means, including: a search information transmission means for transmitting search information to thereby search a node device transmitted to an information processing device connected to the communication means; a reply information receiving means which is a plurality of node devices and receives reply information replied from the plurality of node devices, a communication load information obtaining means; a communication load comparison means for comparing information regarding communication load in each of the communication routes; a node device selection means for selecting a node device on the basis of comparison result by the communication load comparison means; and a participation request information transmission means to transmit the participation request information to the selected node device.

Abstract: Providing a charging information generating apparatus, a charging information generating process program, a consideration information generating apparatus, a consideration information generating process program, and the like capable of generating reliable and certain charging information or consideration information more efficiently. The apparatus includes; a log obtaining means for obtaining a log recorded in at least two nodes out of first, second, and third nodes; a log consistency determining means for determining consistency of the at least two logs obtained; and a charging information generating means, when it is determined that the logs have consistency, for generating charging information to the user of the first node.

Abstract: The present invention provides a node apparatus, a shared information updating method, a shared information storing method, a shared information updating process program, a shared information storing process program, and the like capable of efficiently obtaining shared information in the latest state at any time without providing a management server.

Abstract: There is provided a network control device capable of surely distributing a content even when a relay function of one of the nodes contained in a network stops, without affecting the process in nodes below the node and while improving the re-liability of the network system itself. When controlling a node contained in a network system including a server and a plurality of nodes constituting a plurality of hierarchies and connected to one another, wherein a content is distributed from the server to the respective nodes, it is checked whether a content relay function in a node located at the uplink with respect to the node in the content distribution has stopped. When the stop of the relay function is detected, control is performed so that the consumption speed of the content accumulated in the lower node in the process executed in the node is smaller than the consumption speed before the relay function has stopped.