Abstract: A wireless ad hoc communication system is provided in which in the case where an alternative route can not be discovered in a certain node, a restoration is attempted in an intermediate node instead of deleting all routes up to a transmission source. In order to do so, a route discovery process 20 discovers and sets a route when a corresponding route is not set at the time of data communication request 10. A link state management process 40 monitors a state of a link 30 on the route set by the route discovery process 20, and updates a link state in a route table of each wireless terminal. When the link quality deteriorates, a route information notification process 50 notifies the link state to urge a retention of transmission data. An alternative route search process 60 searches an alternative route when the link quality deteriorates, and traces back to a terminal on the transmission side in order to search further when the alternative route is not discovered.

Abstract: A content processing device includes: a keyword acquiring means for acquiring a keyword for specifying content; a title acquiring means for acquiring a content title; a processing means for processing the acquired title on the basis of a predefined processing rule; a similarity calculating means for calculating similarity between the processed title and the keyword; and an identifying means for identifying content having a title specified by the keyword on the basis of the calculated similarity.

Abstract: There is provided a control unit of an information processing apparatus for causing a display unit to display selected information stored in a storage unit at a selected information display position, as well as causing the display unit to display a first selection candidate information, which is one of object information and relationship information correlated with the selected information, at a first candidate information display position which is a position departing a predetermined distance from the selected information display position in a predetermined first direction, and to display a second selection candidate information, which is one of the object information and the relationship information correlated with the selected information other than the first selection candidate information, at a second candidate information display position which is a position departing a predetermined distance in a predetermined second direction opposite from the first direction.

Abstract: There is provided an information processing method, including the steps of: obtaining a first format document described using a mark-up language; and generating, based on definition data defining a hierarchical relationship of at least two types of tags of the mark-up language in a document structure, a second format document representing a tree structure having at least a node thereof corresponding to the tag or to a text related to the tag from the first format document.

Abstract: A set-N table (110) is a table holding information regarding other wireless communication devices that can be reached from a wireless communication device (a node) in one hop. A set-N2 table (120) is a table holding information regarding other wireless communication devices that can be reached from a wireless communication device (100) in two hops. A set-F table (170) is a table holding information regarding nodes whose reachability of flooding from the wireless communication device (100) has not been verified. An MPR setting unit (160) sets optimal MPR nodes with consideration of communication states of links in a wireless ad hoc network by selecting, with consideration of communication states of links between individual nodes, the communication states of links being held in the set-N table (110) and the set-N2 table (120), MPR nodes and setting the MPR nodes in an MPR table (180) while deleting nodes whose reachability of flooding has been verified from the set-F table (170).

Abstract: A wireless communication terminal, which forms a wireless network with a plurality of other wireless communication terminals, includes a detection portion to detect a first communication management signal periodically transmitted via broadcast from another wireless communication terminal prior to communication of a data signal, a communication control portion to determine whether to transmit a second communication management signal to the wireless communication terminal to transmit the first communication management signal based on a detection status of the first communication management signal, and a wireless communication portion serving as a transmission portion to transmit the second communication management signal via unicast to the wireless communication terminal as a transmission source of the first communication management signal and as a reception portion to receive an acknowledge signal transmitted via unicast in response to the second communication management signal.

Abstract: There is provided a wireless communication device forming an autonomous distributed wireless network by intermittently transmitting and receiving a predetermined communication management signal, which includes a reception portion to receive the communication management signal, an evaluation portion to evaluate a communication state of the wireless communication device in the wireless network based on a history of receiving the communication management signal by the reception portion, and a notification portion to provide a notification corresponding to an evaluation result of the communication state by the evaluation portion.

Abstract: A wireless communication device configured to perform communication with another wireless communication device which exists outside the wireless communication range by performing communication through a path via a neighboring wireless communication device includes: a communication control unit configured to compute the number of links until a signal from the other wireless communication device is received; a device information holding unit configured to associate the number of computed links with information relating to the other wireless communication device and holding therein; and a display control unit configured to control the information relating to the other wireless communication device associated to the number of links based on the number of links, so as to be displayed.

Abstract: The present invention proposes a highly reliable communication system and communication method, a communication terminal device used for the communication system, a control method thereof, and a program installed on the communication terminal device. In communication system and communication method, the communication terminal device used for the communication system, the control method thereof, and the program installed on the communication terminal device, a first communication terminal originates a first message. In response to the first message, a third communication terminal originates a second message. Based on these messages, the first through third communication terminals create routes to the first or third communication terminal. The first communication terminal transmits a route request composed of a request for a route used for communication with the third communication terminal. The second and third communication terminals create multiple routes to the first or third communication terminal.

Abstract: A wireless-communication device configured to communicate with a different wireless-communication device provided outside a wireless-communication range through a path via a neighbor wireless-communication device includes first identification-information storage storing information about at least one first opposite station, second identification-information storage storing information about at least one second opposite station, a broadcast-signal-generation unit generating a broadcast signal including a propagation-node number and a transfer-finish-instruction signal, and transmitting the broadcast signal to another different wireless-communication device, and a broadcast-signal-transfer unit setting the transfer-finish-instruction signal, so as to instruct to finish transferring the broadcast signal, setting another propagation-node number, and transferring the broadcast signal to another different wireless-communication device when being instructed not to finish transferring the broadcast signal.

Abstract: In an environment in which various usable information processing device exist in the neighborhood of a user, it is possible to a detect, from a main terminal used by a user, an information processing device having the function corresponding to a user request. By using the detected device, it is possible to perform data processing and data communication corresponding to the user request, which cannot be performed by one device. By transmitting a resources finding/using query packet to devices capable of data communication, the function confirmation and the environment setting of each information processing device can be performed. Even if the function of the information processing device dynamically changes, the device can be used based on the updated information.

Abstract: A terminal device includes: a session initiation request message generating section for generating a message for starting a session with an external device and in which capability information on the terminal device is described; a capability information analyzing section for analyzing capability information on the external device described in a response message transmitted from the external device; a communication mode determining section for determining a communication mode between the terminal device and the external device based on an analysis result by the capability information analyzing section and the capability information on the terminal device; and a control section for, based on the determined communication mode, controlling a data conversion device connected to the network such that data from the terminal device is converted into data receivable by the external device, and such that data from the external device is converted into data receivable by the terminal device.

Abstract: A remote control system includes an information processing apparatus and a remote controller. The remote controller includes a start notification transmitter that transmits a notification for causing the information processing apparatus to start recording an inter-device distance.

Abstract: A wireless communication system includes plural wireless terminals between which multi-hop communications are performed; wherein processing for extended route search is activated to carry out route search and key exchange at the same time, the processing using a routing control protocol including a key exchange protocol.

Abstract: A wireless ad hoc communication system is provided in which in the case where an alternative route can not be discovered in a certain node, a restoration is attempted in an intermediate node instead of deleting all routes up to a transmission source. In order to do so, a route discovery process 20 discovers and sets a route when a corresponding route is not set at the time of data communication request 10. A link state management process 40 monitors a state of a link 30 on the route set by the route discovery process 20, and updates a link state in a route table of each wireless terminal. When the link quality deteriorates, a route information notification process 50 notifies the link state to urge a retention of transmission data. An alternative route search process 60 searches an alternative route when the link quality deteriorates, and traces back to a terminal on the transmission side in order to search further when the alternative route is not discovered.

Abstract: A system capable of switching terminals while continuously receiving data on terminals monitored by a relay device such as a gateway. In devices such as a gateway for relaying data, the session status of the terminal under control is monitored and the relay processing status of data received externally over a network is changed according to requests such as pause, list, resume and call from a terminal, and the dynamic data address is changed or the relay of data is temporarily halted (pause). The present structure allows the user (client) to change the terminal receiving the data and change the receive processing status so that data can be continuously received on the terminal used after switching terminals.

Abstract: A terminal device includes: a session initiation request message generating section for generating a message for starting a session with an external device and in which capability information on the terminal device is described; a capability information analyzing section for analyzing capability information on the external device described in a response message transmitted from the external device; a communication mode determining section for determining a communication mode between the terminal device and the external device based on an analysis result by the capability information analyzing section and the capability information on the terminal device; and a control section for, based on the determined communication mode, controlling a data conversion device connected to the network such that data from the terminal device is converted into data receivable by the external device, and such that data from the external device is converted into data receivable by the terminal device.

Abstract: In an environment in which various usable information processing device exist in the neighborhood of a user, it is possible to a detect, from a main terminal used by a user, an information processing device having the function corresponding to a user request. By using the detected device, it is possible to perform data processing and data communication corresponding to the user request, which cannot be performed by one device. By transmitting a resources finding/using query packet to devices capable of data communication, the function confirmation and the environment setting of each information processing device can be performed. Even if the function of the information processing device dynamically changes, the device can be used based on the updated information.

Abstract: A system capable of switching terminals while continuously receiving data on terminals monitored by a relay device such as a gateway. In devices such as a gateway for relaying data, the session status of the terminal under control is monitored and the relay processing status of data received externally over a network is changed according to requests such as pause, list, resume and call from a terminal, and the dynamic data address is changed or the relay of data is temporarily halted (pause). The present structure allows the user (client) to change the terminal receiving the data and change the receive processing status so that data can be continuously received on the terminal used after switching terminals.