Abstract: To provide a network unit that includes a diagnosis-information management unit that transmits a diagnosis-information transmission request by designating a destination network number while assuming a value other than a station number; a routing control unit that holds routing information indicating correspondence between a destination control network and identification information, and that relay-controls the diagnosis-information transmission request received from the diagnosis-information management unit, another network unit connected to the same programmable logic controller, or a control network connected to the network unit in accordance with the routing information; and a diagnosis-information creation unit that creates the diagnosis information when the diagnosis-information transmission request having a network number of the control network connected to the network unit as the destination network number is received, and it transmits the created diagnosis information to a sender of the diagnosis-info

Abstract: There are included: a device to be located (500) that transmits sound waves; a positioning device (100) that transmits sound waves to the device to be located (500) upon receiving the sound waves transmitted from the device to be located (500); and a positioning execution device (300) that calculates a distance between the positioning device (100) and the device to be located (500) by using required time for the device to be located (500) to receive the sound waves transmitted by the positioning device (100) after transmitting the sound waves and return delay time before the positioning device (100) transmits the sound waves to the device to be located (500) after receiving the sound waves, and calculates a location of the device to be located (500) by using the distance between the positioning device (100) and the device to be located (500).

Abstract: A radio communication system according to the present invention includes a plurality of nodes that collect data of apparatuses and an access point that collects the data of the plurality of nodes. The access point arranges the plurality of nodes into a plurality of groups including nodes, each of which can receive radio waves transmitted from one another, the number of the nodes being equal to or smaller than a number with which interference avoidance of radio by an access method for avoiding congestion efficiently functions. The access point transmits a polling packet for granting a transmission right to each of the groups. When determining that a transmission right is granted to the group to which the plurality of nodes belong, the plurality of nodes transmit the data to the access point while avoiding interference with the other nodes in the group according to the access method.

Abstract: To provide a network unit that includes a diagnosis-information management unit that transmits a diagnosis-information transmission request by designating a destination network number while assuming a value other than a station number; a routing control unit that holds routing information indicating correspondence between a destination control network and identification information, and that relay-controls the diagnosis-information transmission request received from the diagnosis-information management unit, another network unit connected to the same programmable logic controller, or a control network connected to the network unit in accordance with the routing information; and a diagnosis-information creation unit that creates the diagnosis information when the diagnosis-information transmission request having a network number of the control network connected to the network unit as the destination network number is received, and it transmits the created diagnosis information to a sender of the diagnosis-info

Abstract: It is aimed to prevent access to data when a storage device 1 is lost without damaging security and convenience of a user even if the storage device 1 is under condition in which communication with an authentication server is unavailable and further a personal identification number is leaked. The storage device 1 includes a data storing unit 11 which stores security target data and valid duration of use data showing a valid duration of use of the security target data and a validity checking unit 14 which implements a validity check process for checking if the security target data stored in the data storing unit 10 is valid based on the valid duration of use data stored in the data storing unit 10. Then, when the communication with the authentication server is unavailable, access to the data is controlled by implementing the validity check process.

Abstract: The present invention aims to prevent heating and ignition of a material powder of a rare-earth alloy while reducing the oxygen content thereof so as to improve the magnetic properties of the rare-earth magnet. A rare-earth alloy powder is compacted by using a powder compacting apparatus including: an airtight container capable of storing a rare-earth alloy powder therein; an airtight feeder box moved between a powder-filling position and a retracted position; and an airtight powder supply device capable of supplying the rare-earth alloy powder from the container into the feeder box without exposing the rare-earth alloy powder to the atmospheric air.

Abstract: The present invention aims to prevent heating and ignition of a material powder of a rare-earth alloy while reducing the oxygen content thereof so as to improve the magnetic properties of the rare-earth magnet. A rare-earth alloy powder is compacted by using a powder compacting apparatus including: an airtight container capable of storing a rare-earth alloy powder therein; an airtight feeder box moved between a powder-filling position and a retracted position; and an airtight powder supply device capable of supplying the rare-earth alloy powder from the container into the feeder box without exposing the rare-earth alloy powder to the atmospheric air.

Abstract: The present invention aims to prevent heating and ignition of a material powder of a rare-earth alloy while reducing the oxygen content thereof so as to improve the magnetic properties of the rare-earth magnet. A rare-earth alloy powder is compacted by using a powder compacting apparatus including: an airtight container capable of storing a rare-earth alloy powder therein; an airtight feeder box moved between a powder-filling position and a retracted position; and an airtight powder supply device capable of supplying the rare-earth alloy powder from the container into the feeder box without exposing the rare-earth alloy powder to the atmospheric air.

Abstract: In the data sharing system which maintains the identical data among the all terminals, the update log of the updated data is deleted as early as possible. This way, the amount of data of the update logs to be recorded in a terminal can be made small. Instead of transmitting the update logs (for example, total 100 bytes) which are extracted by the extracting unit to the other terminals, an amount of data involved in transmitting is less by transmitting the data copy of the inspection data and the log applied information (for example, total 90 bytes). Because of this, the comparing unit decides that the update logs are the update logs that need not be transmitted to the other terminals. The transmitting unit transmits the data copy of the inspection data and the log applied information to the other terminals. The deleting unit decides that the update logs need not be transmitted to all the terminals, therefore, the update logs are deleted from the terminal.

Abstract: The present invention aims to prevent heating and ignition of a material powder of a rare-earth alloy while reducing the oxygen content thereof so as to improve the magnetic properties of the rare-earth magnet. A rare-earth alloy powder is compacted by using a powder compacting apparatus including: an airtight container capable of storing a rare-earth alloy powder therein; an airtight feeder box moved between a powder-filling position and a retracted position; and an airtight powder supply device capable of supplying the rare-earth alloy powder from the container into the feeder box without exposing the rare-earth alloy powder to the atmospheric air.