摘要:
A porous structure 12, which is disposed so as to be immersed in molten metal 16 contained in a vessel 14 and is made of a material having no affinity with the molten metal 16, comprises a hollow passage 42 formed therein so as to communicate with an atmospheric environment, wherein a gas, which is produced on an outer surface of the structure in contact with the molten metal, is directed into the hollow passage 42, whereby the gas is restrained from rising as bubbles on the outer surface of the structure 12.
摘要:
In a communication system using a mobile terminal capable of accessing both a mobile communication network and a local network simultaneously and a gateway provided between a fixed communication network and the local network, the mobile terminal transmits an inquiry message for inquiring information regarding a location on networks of a correspondent of packet communications, to the gateway through the local network, and receives a response message indicating the lookup processing result from the gateway through the local network. Then, the mobile terminal acquires an address to be used in the packet communications with the correspondent according to the response message, and assigns the address to a communication interface for the local network.
摘要:
A mobile IP communication scheme capable of authenticating an individual user who is operating the mobile computer when the mobile computer is connected to a visited site network and transmits a current location registration message to the home agent is disclosed. A user authentication to judge a properness of a user of the mobile computer is carried out according to a user input based information, and the current location of the mobile computer is registered at the mobile computer management device (home agent) when the user is judged as a proper user. The user authentication can be carried out either at the mobile computer management device according to a user input based information received from the mobile computer, or at the mobile computer according to an information entered by the user at the mobile computer.
摘要:
The invention provides an optical disc apparatus which restricts an operation sound generated from an objective lens driving portion of an optical pickup and has a reduce sound, in an optical disc apparatus, in particular, an optical disc apparatus installing a microphone for recording an external voice therein. Coils (107, 108), a magnet (109) and opposing surfaces of a yoke (110) are respectively arranged at substantially point symmetrical positions with respect to an optical axis (111) of an objective lens (103) in a state in which no electric current is applied, the yoke (110) and a unit base (117) are connected via a spring member (118), and the unit base (117) is mounted to a casing (120). In this case, the spring member (118) is connected at a position (121) forward apart from the objective lens (103) with respect to the yoke (110), and is formed so as to have at least a deformation freedom in a direction of the optical axis of the objective lens (103). The casing (120) is made in a closed structure surrounding a space in which the unit base (117), a lens holder (106), the yoke (110) and the magnet (109) are arranged, except a surface opposing to a disc-like recording medium (104).
摘要:
A semiconductor integrated circuit device includes a non-volatile memory having a pseudo pass function of returning a pass as a status even if a bit error reaching an allowable number of bits occurs after at least one of write or erase sequence is completed. The non-volatile memory includes an issue timing control section for controlling timing of issuing the pseudo pass function.
摘要:
When a first mobile node is moved, it reports binding information including a compatible node identifier (virtual mobile guaranteed general network identifier and a node identifier) and a compatible position identifier (mobile guaranteed real network identifier identified on a network to which the first mobile node is moved, and a node identifier) to a first server which is assigned to the first mobile node. A second mobile node also reports the binding information to a second server. For communicating with the second mobile node to which a second server is assigned, if the destination address of a packet addressed to the second mobile node is designated with a compatible node identifier, the first mobile node acquires the binding information of the second mobile node from the second server. Then, the first mobile node converts the destination address of the packet into the acquired compatible position identifier and sets the compatible position identifier of the first mobile node as the source address of the packet. The first mobile node then transmits the packet.
摘要:
In a communication system, even when a mobile terminal device belonging to some mobile carrier does not have a right or a qualification for accessing the fixed communication network via the local network/gateway that is given in advance, this mobile terminal device is enabled to access the fixed communication network via the local network/gateway, by carrying out a procedure for paying the fee from the user of the mobile terminal device to the fixed communication network provider or a procedure for monitoring the mobile terminal device. Also, a device other than the mobile terminal device is enabled to access the resource in the mobile carrier network to which the mobile terminal device belongs, from the local network through the mobile terminal device.
摘要:
A mobile IP communication scheme for supporting a mobile computer moving over different address spaces is disclosed. A packet relay device for relaying packets having an address of the mobile computer device as a destination or source is provided at a border between a private address space and a global address space, where the packet relay device has a packet receiving unit for receiving a packet in a first format using a global address which is transmitted by the mobile computer for a location registration from a visited site managed by a global address system, and checking a content of the packet, and a packet transfer unit for transferring the packet in a second format using a private address, to a correspondent computer in a home network of the mobile computer managed by a private address system, according to the content of the packet.
摘要:
When a first mobile node is moved, it reports binding information including a compatible node identifier (virtual mobile guaranteed general network identifier and a node identifier) and a compatible position identifier to a first server which is assigned to the first mobile node. A second mobile node reports the binding information to a second server. For communicating with the second mobile node to which a second server is assigned, if the destination address of a packet addressed to the second mobile node is designated with a compatible node identifier, the first mobile node acquires the binding information of the second mobile node from the second server. Then, the first mobile node converts the destination address of the packet into the acquired compatible position identifier and sets the compatible position identifier of the first mobile node as the source address of the packet. The first mobile node then transmits the packet.
摘要:
In the disclosed information delivery scheme for delivering WWW information provided by information servers on the Internet to mobile computers connected to the Internet through a wireless network, a plurality of cache servers capable of caching WWW information provided by the information servers are provided in association with the wireless network. The cache servers can be managed by receiving a message indicating at least a connected location of a mobile computer in the wireless network from the mobile computer, selecting one or more cache servers located nearby the mobile computer according to the message, and controlling these one or more cache servers to cache selected WWW information selected for the mobile computer, so as to enable faster accesses to the selected WWW information by the mobile computer. Also, the cache servers can be managed by selecting one or more cache servers located within a geographic range defined for an information provider who provides WWW information from an information server, and controlling these one or more cache servers to cache selected WWW information selected for the information provider, so as to enable faster accesses to the selected WWW information by the mobile computer.