Abstract: A power device of the present invention makes a plurality of DC/DC converters redundant, and supplies power individually to a plurality of disk drives. Each first DC/DC converter is respectively made correspondent to a subgroup. One first DC/DC converter is connected to the disk drives respectively inside one subgroup, and the other first DC/DC converter is connected to the disk drives inside the other subgroup. A second DC/DC converter is made correspondent to all of the subgroups. Second DC/DC converters respectively supply direct-current power to any one disk drive of the disk drives in the subgroups.

Abstract: Provided is a group subordinate terminal in a key updating system that includes a server and a group of terminals including: a group managing terminal; and group subordinate terminals including the group subordinate terminal, the group subordinate terminal comprising: a group withdrawal request processing unit which transmits a group withdrawal request to the group managing terminal in response to an instruction to update its apparatus-unique key, the group withdrawal request requesting for withdrawal of the group subordinate terminal from the group; an update apparatus-unique key requesting unit which requests for another apparatus-unique key by transmitting to the server a group withdrawal certificate indicating that the withdrawal of the group subordinate terminal from the group of terminals is completed through invalidation of its group key; and an update processing unit which updates the apparatus-unique key held in an apparatus-unique key holding unit to the another apparatus-unique key obtained from th

Abstract: Provided are a utilization apparatus, a server apparatus, and a key utilization system which enable the utilization apparatus to control deletion of the old key without using a secure clock and allow encrypted communications irrespective of whether the accessed server has updated its key or not. In key utilization system 1, one or more server apparatuses 5-1 to 5-n each provide service to an apparatus having an apparatus key corresponding with a server key. Update apparatus 2 distributes an update server key to each server apparatus and a new apparatus key to key utilization apparatus 3. CRL distribution apparatus 4 distributes to key utilization apparatus 3 a CRL indicating one or more server apparatuses which have completed key-updating. Key utilization apparatus 3 holds both the old and new apparatus key, judges whether the server apparatuses monitored using the CRL have completed key-updating, and if affirmative, deletes the old apparatus key.

Abstract: A power device of the present invention makes a plurality of DC/DC converters redundant, and supplies power individually to a plurality of disk drives. Each first DC/DC converter is respectively made correspondent to a subgroup. One first DC/DC converter is connected to the disk drives respectively inside one subgroup, and the other first DC/DC converter is connected to the disk drives inside the other subgroup. A second DC/DC converter is made correspondent to all of the subgroups. Second DC/DC converters respectively supply direct-current power to any one disk drive of the disk drives in the subgroups.

Abstract: Arylamine compounds having at least one spiro bond are provided to the layers of an electroluminescent device. The compounds act as hole transporting and luminescent host materials for both fluorescent and phosphorescent emission. Electroluminescent devices employing the arylamine compounds exhibit excellent luminous efficiency, heat resistance and device life.

Abstract: The cloning source of an authorized receiving device cannot be identified. A key distribution system 1 concerning the present invention includes: a communication channel 10; a key distribution center 11; a server 12; and receiving devices 13a to 13n. The key distribution center 11 distributes, to the server 12, the information necessary for distributing shared keys SK to the receiving devices 13a to 13n, and distributes the individual information group EMMG necessary for receiving the shared keys SK from the server 12. The server 12 generates the shared keys SK, generates the common information ECM based on the shared keys SK and the system secret variable group set SPGS, and distributes the common information ECM to the receiving devices 13a to 13n. The receiving devices 13a to 13n obtain the shared keys SK based on the individual information group EMMG and the common information ECM and outputs them to outside.

Abstract: In an organic electroluminescence device in which one or more organic compound layer is interposed between a pair of electrodes constituted from an anode and a cathode, the organic compound layer comprises a hole transporting layer and/or a hole injecting layer, and polyarylamine having a specific structure is contained in the above hole transporting layer and/or hole injecting layer, whereby the organic electroluminescence device obtained by using polyarylamine is provided. In particular, materialized is the organic electroluminescence device in which a production process is simplified and which is increased in a size of a screen and a improved in device performance.

Abstract: A maintenance information output apparatus which can output maintenance information of a speed reducer more adequately than the prior art is provided. A maintenance information output apparatus 130 has: an operating portion 131 which is operated by the user; a wired communicating portion which receives data of an amount of iron from an iron amount detecting device that is attached to a speed reducer 20 of an industrial robot 10, and that detects the amount of iron in a lubricant in the speed reducer 20, through a portable wireless receiver 120; a hard disk which stores the data of the amount of iron received by the wired communicating portion; a display 134 which outputs maintenance information of the speed reducer 20; and a processing device which is configured by a CPU, a ROM, a RAM, and the like, and which controls the operations of the wired communicating portion, the hard disk, and the display 134 in accordance with an operation on the operating portion 131.

Abstract: To provide a liquid crystal display device capable of improving display characteristics. The liquid crystal display device of the present invention is a liquid crystal display device including a structure in which the first substrate including a reflective layer, a liquid crystal layer, the second substrate, and a polarizer are stacked in this order from a back face to a display face, wherein the liquid crystal display device includes a retardation layer, in a region on a liquid crystal layer side of the reflective layer of the first substrate, or in a region where the reflective layer is not arranged of the first substrate, or in the second substrate, and the retardation layer provides two or more regions having different retardations in a display surface plane.

Abstract: A process for producing an aromatic compound which can effectively decrease the contents of halogen elements in the aromatic compound and an aromatic compound which is produced in accordance with the process and useful as the material for obtaining an organic electroluminescence device having a long life are provided. The process for producing an aromatic compound comprises bringing an aromatic compound which is produced via an intermediate compound having halogen elements and has contents of halogen elements of 10 to 1,000 ppm by mass into reaction with a dehalogenating agent to decrease the contents of halogen elements to 10 ppm by mass or smaller, and an aromatic compound which is produced in accordance with the process.

Abstract: A storage system includes a plurality of disk drives, one or more controller boards for controlling data read and write from/to the plurality of the disk drives, and a Fibre Channel switching board for controlling path switching between the controller boards and the plurality of the disk drives. The Fibre Channel switching board has a control logical circuit for adjusting a control signal system between the controller boards and the disk drives according to a connection confirmation signal indicating whether or not the control signal cable is connected to the Fibre Channel switching board.

Abstract: Provided is a storage subsystem capable of inhibiting the deterioration in system performance to a minimum while improving reliability and availability. This storage subsystem includes a first controller for controlling multiple drive units connected via multiple first switch devices, and a second controller for controlling the multiple drive units connected via multiple second switch devices associated with the multiple first switch devices. This storage subsystem also includes a connection path that mutually connects the multiple first switch devices and the corresponding multiple second switch devices. When the storage [sub]system detects the occurrence of a failure, it identifies the fault site in the connection path, and changes the connection configuration of the switch device so as to circumvent the fault site.

Abstract: The storage control device of the present invention detects faults on the disk drives at an early stage, thus enhancing convenience of use. The disk drives are switchingly connected to a subordinate communication control unit via a switching circuit. An error information collection unit of an error monitoring unit detects errors which have occurred at each port of the switching circuit. The errors which have been detected are stored in an intermediate storage unit, and are input via an error information notification unit to a fault recovery control unit of the subordinate communication control unit. By doing this, it is possible to immediately specify whether or not a fault has occurred on any of the disk drives, and to start a fault recovery procedure.

Abstract: The power supply device of the present invention supplies power highly reliably by suppressing an increase in costs even when a multiplicity of load groups are present. When operating normally, each of the normal power supply units supplies power via a normal path to each of the load groups. One redundant power supply unit is provided for a plurality of normal power supply units. When any of the normal power supply units fail, the redundant power supply unit continues to supply power to the load group via the redundant path. A diode for connecting the redundant path to the normal path is provided in each normal power supply unit and the redundant paths that are routed through the respective normal power supply units are connected so as to intersect one another between the normal power supply units.

Abstract: In an organic electroluminescence device including a hole injecting layer, an emitting layer, an electron transporting layer and a cathode, the hole injecting layer contains poly(alkylene dioxythiophene) and at least one type of fluorine-containing colloid-forming polymer acids. The electron transporting layer contains a nitrogen-containing heterocycle derivative represented by a formula (1) below. HAr-L-Ar1—Ar2??(1) (In the formula: HAr represents a substituted or unsubstituted nitrogen-containing heterocycle group having 3 to 40 carbon atoms; L represents, a single bond, a substituted or unsubstituted arylene group having 6 to 60 carbon atoms, a substituted or unsubstituted heteroarylene group having 3 to 60 carbon atoms, or a substituted or unsubstituted fluorenylene group; Ar1 represents a substituted or unsubstituted divalent aromatic hydrocarbon group having 6 to 60 carbon atoms; and Ar2 represents a substituted or unsubstituted aryl group having 3 to 60 carbon atoms.

Abstract: A process for producing an aromatic compound which can effectively decrease the contents of halogen elements in the aromatic compound and an aromatic compound which is produced in accordance with the process and useful as the material for obtaining an organic electroluminescence device having a long life are provided. The process for producing an aromatic compound comprises bringing an aromatic compound which is produced via an intermediate compound having halogen elements and has contents of halogen elements of 10 to 1,000 ppm by mass into reaction with a dehalogenating agent to decrease the contents of halogen elements to 10 ppm by mass or smaller, and an aromatic compound which is produced in accordance with the process.

Abstract: A system for removing a thin metal film is disclosed. The system comprises an inclined metal plate electrode for guiding a downward electrolyte flow, an auxiliary electrode placed on either the upstream or downstream side of the metal plate electrode such that a part of the auxiliary electrode is immersed into the electrolyte, and a power supply for applying a DC voltage to the both electrodes. The system is used to remove a metal thin film on the surface of an insulator by making the electrolyte flowing down the metal plate electrode strike against the metal thin film while the DC voltage is applied to the metal plate electrode and auxiliary electrode.

Abstract: One or more switches are interposed between a controller portion and a storage device. When transmission of a command to a certain storage device fails, a command is transmitted starting from an upstream side to a downstream side of a path between the controller portion and the switch to which the certain storage device is connected, and when command transmission fails while transmitting a command from a kth switch (k is an integer of 0 or more) which is connected to a (k+1)th switch and is one level upstream of the (k+1)th switch or from any port of the controller portion, it is determined that a failure has occurred in a power source that supplies power to the (k+1)th switch.

Abstract: A polymer compound for an organic electroluminescence device, which has a halogen element content of 50 ppm by mass or less.

Abstract: A fluoranthene compound with a specified asymmetric structure; an organic EL device which is composed of one or more organic compound layers including at least one emitting layer sandwiched between a pair of electrodes, wherein at least one of the organic compound layers contains at least one kind of the fluoranthene compound; and a solution containing a material for the organic EL which is composed of the fluoranthene compound as the material for the organic EL and a solvent. An organic electroluminescence (EL) device having a superior luminance of light emission, an enhanced efficiency of light emission, and a prolonged lifetime and a compound realizing the device are provided.