Abstract: Provided is a wireless communication system, comprising: a base station providing communication by a plurality of communication methods; and a mobile node for communicating with the base station by the plurality of communication methods. The mobile node calculates a first distance between a wireless LAN access point and the mobile node; and judges whether the communication by the wireless LAN is possible by comparing the calculated first distance and a second distance that is a distance within which communication by a wireless LAN is available.

Abstract: A method and a device to resolve the problem of long communication paths between a mobile node, and a node not supporting mobile IP wherein a plurality of home agents are established in the network and by using the anycast address as the home address, the home agent nearest the communication node or mobile node is selected from among the home addresses.

Abstract: An object of the invention is to provide a diagnosis method for standby systems in an optical ring network having a redundant configuration, which can confirm normal states of standby systems in all optical transmission apparatuses on the network, even during operations of active systems. To this end, in the present diagnosis method for standby systems, when a diagnosis start command is given to an arbitrary optical transmission apparatus on the network, the optical transmission apparatus provides a false signal to a standby system unit to diagnoses an operation state thereof, and transmits the result to the optical transmission apparatus on the downstream side by utilizing overhead information in the active system optical channel.

Abstract: To prevent a hung-up of communications due to changes in a radio wave condition resulting from frequent displacement of the terminals and changes in a number of the terminals, and to realize switching of the radio systems adapting to the radio condition. A radio communication system comprising: a base station for providing a plurality of radio systems, and terminals for communicating with the base station through the plurality of radio systems. The base station decides a priority of the radio system on which the each terminal will communicate thereafter and transmits paging signals of one of the plurality of radio systems which includes information on the decided priority to the each terminal.

Abstract: In ad hoc systems using OLSR, when a mobile node moves out of the fixed node's communication area, communication is impossible in the period from leaving the communication area until the time-out, even if there is a node to relay communications between the fixed node and mobile node. Switching from direct communication to 2-hop communication without interruption is therefore important for achieving continuous communication. Each node reports its position information and speed information to a neighbor mode. The fixed node compares that information with its own communication area, detects mobile node movement to outside the communication area from the mobile node's position and speed information, and switches beforehand to 2-hop communication via a relay node.

Abstract: An object of this invention is to reduce a calculation amount and required storage capacity of a URL switch by dividing transfer destination determining processing among a plurality of devices. Provided is a computer system including: a plurality of servers; and a packet transfer device, in which: the servers are coupled to the packet transfer device; the packet transfer device is coupled to a client terminal via a network; the packet transfer device receives a content request including a fixed-length hash value that is calculated from a variable-length identifier of the content requested by the client terminal; extracts the hash value from the received content request; and determines, based on the extracted hash value, to which one of the plurality of servers the content request is to be transferred.

Abstract: A method and a device to resolve the problem of long communication paths between a mobile node, and a node not supporting mobile IP wherein a plurality of home agents are established in the network and by using the anycast address as the home address, the home agent nearest the communication node or mobile node is selected from among the home addresses.

Abstract: An apparatus for horizontally loading and unloading an ink-jet print cartridge from a carriage in a printer. The apparatus includes a generally rectangular print cartridge, an elongate supporting lip located on a side wall of the print cartridge, a carriage body, a chute mounted on the carriage for receiving the print cartridge, and a generally horizontal rail on a side wall of the chute for guiding the print cartridge into the carriage. In operation, the apparatus horizontally loads a print cartridge into a carriage by translating the print cartridge horizontally forward into a carriage, engaging a lip on the print cartridge with a guide rail on the carriage, sliding the print cartridge up and over a datum on the carriage with the guide rail and latching the print cartridge in the carriage.

Abstract: An object of the invention is to provide a diagnosis method for standby systems in an optical ring network having a redundant configuration, which can confirm normal states of standby systems in all optical transmission apparatuses on the network, even during operations of active systems. To this end, in the present diagnosis method for standby systems, when a diagnosis start command is given to an arbitrary optical transmission apparatus on the network, the optical transmission apparatus provides a false signal to a standby system unit to diagnoses an operation state thereof, and transmits the result to the optical transmission apparatus on the downstream side by utilizing overhead information in the active system optical channel.

Abstract: When an edge node whose order is lower than that of a primary switch detects a failure of the primary switch, the edge node requests a secondary switch that the secondary switch serves as a host of the edge node itself. At this time, the secondary switch establishes a connection between the secondary switch and the edge node, generates routing information and label information in a core network which does not comprise the primary switch to give the routing information and the label information to the edge node. The secondary switch performs communication between the edge node and the secondary switch by using the routing information and the label information which are received from the secondary switch.

Abstract: According to one embodiment of the invention, a method for providing communications service in a communications ring undergoing an upgrade process is provided. The communications ring is formed from a plurality of existing nodes each operable to transmit, at an existing rate, a first frame having a number of occupied time slots equal to N occupied by data. N is an integer. The method includes increasing the existing rate of a node to a higher rate. With the increase, the node is operable to transmit a second frame at the higher rate. The second frame has a higher number of time slots than the first frame. The method also includes occupying a number of the time slots of the second frame equal to N using data to be received by an existing node. The method also includes providing at least one identifier to the existing node that will receive the second frame. The identifier identifies the occupied time slots of the second frame. The method also includes transmitting the second frame of data to the existing node.

Abstract: To suppress the peak traffic on a network, a control server for making a plurality cache servers cooperative is provided on the network and the control server is caused to predict a demand for specified data. In connection with data for which the demand is expected to increase, the data is copied and distributed in advance to a cache server subordinate to the control server.

Abstract: A method for producing a semiconductor light emitting device includes the steps of forming a mask layer having a plurality of openings on a surface of a silicon substrate; and forming a column-like multi-layer structure including a light emitting layer in each of the plurality of openings with nitride semiconductor materials. A width between two adjacent openings of the plurality of openings of the mask layer is 10 &mgr;m or less.

Abstract: A print carriage assembly for an ink jet printer. The print carriage assembly includes a print carriage slidably supported on a printer slider rod, and a sub-carriage that is separate from the printer carriage and slidably supported on the printer slider rod for pushing the printer carriage.

Abstract: An apparatus for horizontally loading and unloading an ink-jet print cartridge from a carriage in a printer. The apparatus includes a generally rectangular print cartridge, an elongate supporting lip located on a side wall of the print cartridge, a carriage body, a chute mounted on the carriage for receiving the print cartridge, and a generally horizontal rail on a side wall of the chute for guiding the print cartridge into the carriage. In operation, the apparatus horizontally loads a print cartridge into a carriage by translating the print cartridge horizontally forward into a carriage, engaging a lip on the print cartridge with a guide rail on the carriage, sliding the print cartridge up and over a datum on the carriage with the guide rail and latching the print cartridge in the carriage.

Abstract: A carriage assembly for holding one or more inkjet print cartridges. A mechanical key on a carriage chute is formed in a predetermined pattern having a plurality of columns such that at least one of the columns acts as a barrier preventing a non-compatible print cartridge from staying in a secured mounting position.

Abstract: A method for producing a semiconductor light emitting device includes the steps of forming a mask layer having a plurality of openings on a surface of a silicon substrate; and forming a column-like multi-layer structure including a light emitting layer in each of the plurality of openings with nitride semiconductor materials. A width between two adjacent openings of the plurality of openings of the mask layer is 10 &mgr;m or less.

Abstract: A mechanical key scheme is integrated into a composite pattern on both a print cartridge and its corresponding printer carriage chute. In a preferred embodiment the pattern incorporates a plurality of adjacent contiguous columns on both sides of a latch, with each column capable of defining multiple position bits in order to precisely differentiate between different types and/or different families of print cartridges.

Abstract: A bicyclolactam compound of the formula (1) is disclosed, which has an excellent anxiolytic effect, is high in safety, and is useful as an effective component of medicinals which are greatly diminished in side effects such as hypnotic, muscle relaxant and sedative effects A bicyclolactam derivative represented by the following formula (1) is also disclosed, and is useful as an effective component of an anxiolytic agent

Abstract: A horizontally loadable carriage for an ink-jet print cartridge. The carriage scans in an ink-jet printer and includes a carriage body, a chute for receiving an ink-jet print cartridge, and a generally horizontal guide rail within the chute. The guide rail is arcuate and inclined slightly upward to facilitate loading print cartridges into the carriage. The carriage further includes a cantilever bias spring having a horizontal axis.