Brother Kogyo Kabushiki-Kaisha

Xing Inc.

Hideki Matsuo

Kentaro Ushiyama

Hiroaki Suzuki

Yuji Kiyohara

Koichi Iijima

Yoshihiko Hibino

Kazuyuki Shudo

Tomohiro Kudo

Osamu Tatebe

Yuetsu Kodama

Yasushi Yanagihara

Koichi Hayashi

Hirotsugu Unotoro

Kazuhiro Nakamura

In a content distributed-storage system in which divided content data obtained by dividing content data of a single unit having a plurality of pieces of frame image data into a plurality of pieces is stored so as to be distributed to a plurality of node devices, unique identification information is assigned to each of the divided content data, each of the node devices can obtain the divided content data on the basis of the identification information. In the system, content catalog information having the identification information of at least one piece of the divided content data and key frame information including information indicative of an offset position of the frame image data in each of the divided content data, is stored. An instruction related to playback of the content data from the user is received.

Content distributed-storage system, frame image obtaining method, node device, and recording medium on which node processing program is recorded

In a node device included in an information communication system which has a plurality of node devices capable of performing communication with each other via a network, common information shared by the plurality of node devices is stored so as to be spread to the plurality of node devices. The node device includes:

Node device, recording medium where storage control program is recorded, and information storing method

The present invention is to provide an information communication system with its communication load of the communication network as a whole reduced. The above problem is solved with the information communication system formed by participation of a plurality of node devices mutually connected through the communication network, wherein a node device having a memory means for memorizing an IP address indicative of the specific node device of one or more, and an node ID corresponding to the IP address, wherein in a case where the node ID of other node device (node A) is further memorized in an area of a memory means, to which a node ID corresponding to a node device (node K) of a sending source of received information belongs, and in a case where a HOP number of from the node K to the own node device is smaller than a HOP number of from the node A to the own node device, an IP address and identification information of the node K being the information sending source is memorized in the memory means in place of the IP address and the node ID of the node A memorizing the node ID.

Information communication system, information communication method, node device included in information communication system and recording medium recording information processing program

A node device in an overlay network formed by a plurality of node devices comprises: a memory unit that memorizes a plurality of routing tables where a plurality of node identification information are registered, the node identification information is indicative of identifying the node device from other node devices; and a searching unit that searches the node device as a destination of a message transmission by referring to the routing tables. The node device also comprises a transmitting unit that transmits the message to the node device searched by the searching unit. An amount of the node identification information which can be registered in the routing table to be first referred to by the searching unit is more than an amount of the node identification information which can be registered in the routing table other than the routing table to be first referred.

Node device, information process method, and recording medium recording node device program

A distributed storage system that includes: a plurality of node apparatuses connected to a plurality of different networks through a high order apparatus group or a low order apparatus group, the distributed storage system comprising: a first node apparatus that includes: a first storage unit which stores connection relationship information on the high order apparatus group and the low order apparatus group connected through the network; and a second node apparatus that includes: an acquisition unit which acquires first connection information, which indicates the high order apparatus group or the low order apparatus group that is a connection destination of the node apparatus, from the first node apparatus based on location information indicating locations of the plurality of node apparatuses; and a transmission unit which transmits the first connection information acquired by the acquisition unit to any of the plurality of node apparatuses included in the distributed storage system.

Distributed storage system, connection information notifying method, and recording medium in which distributed storage program is recorded

In a transmitting node device, a first storing device stores address information and node identification information of a plurality of first specific node devices, a detecting device detects a change in address information of the transmitting node device, a first selecting device selects at least one node device from the first specific node devices, and a notifying device transmits an address change notification message to the node device selected by the first selecting device. In a receiving node device which receives the address change notification message, a second storing device stores address information and node identification information of a plurality of the second specific node devices, and an updating device updates the address information stored in the second storing device with the address information included in the received message.

Distributed storage system, node device, recording medium in which node processing program is recorded, and address information change notifying method

A node device connected to other node devices has a particular obtaining unit that obtains search information including, a first determination unit that applies a predetermined rule to determine whether the search information obtained by the particular obtaining unit is required to be stored in the node device. The node device has a first storage unit that stores search information when required, and a second determination unit that determines whether the search information obtained by the particular obtaining unit is newly published in the network. A second storage unit stores the search information when the second determination unit determines that the storage information is newly published. A search unit searches the content data, based on the search information stored in at least one of the first storage unit and the second storage unit.

Node device, information communication system, method for retrieving content data, and computer readable medium

A node device communicates with a plurality of node devices via a network. The node device includes a first obtaining unit that obtains search information for searching the content data stored in at least one node device, and a particular determination unit that applies a predetermined rule to determine whether the search information is required to be stored. A first storage unit stores the search information when required. A second obtaining unit obtains the content data from the information communication system, and a second storage unit stores the content data from the second obtaining unit. A third storage unit stores the search information corresponding to the stored content data in the second storage unit. A management unit manages the stored content in the second storage unit based on the search information stored in at least one of the first storage unit and the third storage unit.

Node device, information communication system, method for managing content data, and computer readable medium

A group of nodes mutually connected through a communication route form an information communication system. The nodes include a memory for memorizing node information indicating a candidate node of information transfer destination, a participation request information transfer unit for judging whether node information indicating a node of a transfer destination in response to information of the participation request node is memorized, when participation request information is received, and for transferring the participation request information to the node when the node information is memorized, an existence confirmation information sending unit for judging whether information of other than the transfer destination is memorized when the participation request information is received, and for sending existence confirmation information to the node when the information other than the transfer destination is memorized, and a unit for sending return information to the participation request node device when the existence confirmation information is received.

Information communication system, information communication method, node device included in information communication system and recording medium recording information process program

To prevent a preview of contents by a person who does not have a right to view or listen, by distributing encoded contents data which are difficult for a third person to decode. A new participation terminal apparatus, as well as transmitting a participation request to a parent terminal apparatus of a connection destination candidate, transmits a participation disclosure key for encoding a contents decoding key. The parent terminal of the connection destination candidate which receives the participation disclosure key from the new participation terminal apparatus generates an encoded decoding key, which is a contents decoding key encoded using the participation disclosure key received, and transmits it to the new participation terminal apparatus. The new participation terminal apparatus decodes the encoded decoding key received, using a participation secret key stored in a participation key storage section, acquiring a contents decoding key. Using the contents decoding key, the new participation terminal apparatus decodes distributed encoded contents data, and carries out a reproduction process.

Contents distribution system, contents distribution method, terminal apparatus, and recording medium on which program thereof is recorded

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,

Information delivery system, delivery request program, transfer program, delivery program, and the like

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.

Information processing apparatus and storing apparatus, information processing method and storing method, and recording medium that promptly and efficiently distributes content

A tree type network system including an information delivery device, a plurality of node devices, and an administration, wherein the node devices are connected in a tree-like shape via a communication route while placing the information delivery device in an uppermost level and forming a plurality of hierarchy levels, and the delivery information is sequentially transferred from the node device in an upper hierarchy level to the node devices in lower hierarchy levels, wherein the administration device includes: a device for acquiring attribute information of a node device, which transmits participation request information, and determines device information on the basis of the attribute information thus acquired upon receipt of participation request information of requesting device information of node device as connection candidate, and a device for transmitting the connection end candidate information thus determined to the node device which transmits the participation request information.

Tree-type network system, node device, broadcast system, broadcast method, and the like

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.

Growing community of inventors

Nagoya, Japan

Hideki Matsuo