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Assignee: Hitachi, Ltd.


Location: Tokyo, JP
No. of patents: 32239

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NumberTitleIssue Date
8132448Steam turbine test facility, low-load test method, and load dump test method
A steam turbine test facility 1 includes a test steam turbine 2 which simulates the behavior of a real steam turbines 11 included in the steam turbine plant 10, and a motor-generator 4 connected to the test steam turbine 2. ...
03/13/2012
D655710Computer display with a graphical user interface
03/13/2012
8132063Semiconductor device
To realize a fast and highly reliable phase-change memory system of low power consumption, a semiconductor device includes: a memory device which includes a first memory array having a first area including a plurality of first memory cells and a second area includin...
03/06/2012
8132033Storage system
There is provided a storage system including a file server connecting to a computer over a network and a storage apparatus connecting to the file server connecting over the network, wherein the file server includes a first controller, the storage apparatus includes ...
03/06/2012
8132025Management method for archive system security
Creating a plaintext index from a text that is extracted from a file presents the risk of a leak of confidential information from the created index. To address this problem, provided is a computer system which has a computer, a storage subsystem coupled to the compu...
03/06/2012
8131963Remote copy system
Even when a host does not give a write time to write data, consistency can be kept among data stored in secondary storage systems. The present system has plural primary storage systems each having a source volume and plural secondary storage systems each having a ta...
03/06/2012
8131962Storage system and method of producing recovery volume
A storage system for writing data sent from a computer to storage regions is described. The storage system includes storage regions configured to store data, and a controller coupled with the storage regions. The controller is configured to control writing of the da...
03/06/2012
8131958Storage system, storage device, and data updating method using a journal volume
A storage device including a data volume for storing data sent from a host computer and a journal volume to which update data in the data volume is written in a chronologically identifiable manner, comprises an update unit updating update data from a data restoratio...
03/06/2012
8131956Virtual storage system and method for allocating storage areas and releasing storage areas from allocation based on certain commands
The storage system includes a plurality of storage devices and a controller that manages a virtual volume including a plurality of virtual storage areas, and manages a storage pool including a plurality of storage areas prepared on the storage devices in order to al...
03/06/2012
8131927Fast accessible compressed thin provisioning volume
A computerized data storage system includes at least one storage device including a nonvolatile writable medium; a cache memory operatively coupled to the storage port and including a data storing area and a data management controller and a storage port. The storage...
03/06/2012
8131922Storage system
The storage system includes a disk controller for receiving write commands from a computer, and a plurality of disk devices in which data is written in accordance with the control of the disk controller. The size of the first block which constitutes the data unit ha...
03/06/2012
8131892Storage apparatus and a data management method employing the storage apparatus
A storage apparatus is provided that is capable of reducing data maintenance management costs with a performance that is both highly reliable and fast. The present invention is storage apparatus where an intermediary device is arranged between a controller and a plu...
03/06/2012
8131863Address translator, message processing method and equipment
An address translator includes an SIP message detecting function. Upon detection of an SIP message, the address translator sends the SIP message to an SIP address translator. The SIP address translator extracts addresses for translation, and makes a query to the add...
03/06/2012
8131855Management computer, resource management method, resource management computer program, recording medium, and information processing system
A resource management method executed by an information processing system having a plurality of physical servers 104 and a plurality of virtual servers 120 to be operated on the physical server, and a management server 101 connected to the physi...
03/06/2012
8131783Storage system, volume management method, and management computer
A storage system for optimizing volume capacity among file management computers of sharing a storage apparatus is provided. A capacity management computer acquires statistical information such as access history information from the file management computers and the ...
03/06/2012
8131682System and method for replacing contents addressable storage
Data is migrated from a first CAS (contents addressed storage) system to a second CAS system. When the migration process is started, the second CAS system retrieves a list of the objects stored on the first CAS system. The second CAS system, based on the list, retri...
03/06/2012
8131679Exclusive control method for database and program
A technology capable of preventing a problem which occurs when log writing of a preceding transaction fails while reducing waiting time of a subsequent transaction is provided. A database control method for releasing locking of data held by a transaction upon recept...
03/06/2012
8131675Map data delivering device, communication terminal, and map delivering method
There is disclosed a map data delivering system for providing consistent road network information from supplement map information and map update information. The map data delivering system includes a navigation terminal and a map distribution server. The map distrib...
03/06/2012
8131388Electronic controller for power converter and motor drive circuit
The electronic controller fetches an external signal and performs an input process such as A-D conversion. Upon receipt of processing results for executing operations according to a predetermined program, an output process is performed for sending a signal to the ou...
03/06/2012
8131299Location registration area assigning method and wireless communication system
A call processing control apparatus automatically detects that a lot of handover and location registration simultaneously occur, and notifies a monitor control server. The monitor control server receiving the notification from the call processing control apparatus t...
03/06/2012
8131155Optical signal transmission apparatus
There is provided an optical signal transmission apparatus having a stable dispersion compensation function without unnecessarily controlling a compensation value even when a main signal quality is deteriorated due to a factor other than dispersion or in the case of...
03/06/2012
8130794Video signal transmission device, video signal transmission and receiving system, and video processing system, that transmit/receive over a clock line
The present invention is intended to permit both real-time display of a picture represented by a non-compressed video signal on a television and display of a picture represented by a compressed video signal at any desired time by simultaneously transmitting the comp...
03/06/2012
8130716Radio base station and scheduling method
The present invention is to accommodate a large number of users required in a digital radio communication system and to prevent communication quality from deteriorating. The present invention is to prevent the occurrence of a delay by adding a process for restrictin...
03/06/2012
8130598Head for thermal assisted magnetic recording device, and thermal assisted magnetic recording device
The aim of the present invention is to apply an intense magnetic field to a portion where an optical near-field is generated by a thermal assisted magnetic recording head with a scatterer having conductivity as an optical near-field generating element. To this end, ...
03/06/2012
8130575Semiconductor device
A highly reliable large capacity phase change memory module is realized. A semiconductor device according to the present invention includes a memory array having a structure in which a storage layer using a chalcogenide material and a memory cell constituted of a di...
03/06/2012
8130521On-vehicle charging generator and rectifier unit thereof
In a rectifier unit having a MOSFET, there is provided a stable MOSFET rectifying operation which is not influenced by a power generation condition from a start of an engine. An output VS obtained by adding phase voltages VU, VV, and VW and a power generation voltag...
03/06/2012
8130497Blade server
A server system with a cooling ability that can cope with an increase in the amount of heat generated by a CPU of a server module detachably mounted on a blade server. The server module includes an enclosure accommodating therein a motherboard on which a CPU, memory...
03/06/2012
8130430Holographic storage device and method using phase conjugate optical system
A monocular holographic storage device or system to provide for compact recording and/or reading of data pages in a holographic storage medium. Also provided are methods for carrying out such data storage and/or data recovery using a monocular holographic storage de...
03/06/2012
8130284Imaging apparatus and method for controlling white balance
An imaging apparatus has: a white balance control circuit for detecting an achromatic portion of an image of an object and controlling gains of the chrominance; an object distance detecting circuit for detecting a distance to the object; and a zoom value detecting c...
03/06/2012
8129851Wind power generation system and control method thereof
In a wind power generation system, an energy consuming unit is connected to a DC part of a generator-side converter. A shunt circuit is connected between the generator-side converter and a rotor of an AC-excited power generator. In the event of system failure, the s...
03/06/2012
8129802Integrated micro electro-mechanical system and manufacturing method thereof
In the manufacturing technology of an integrated MEMS in which a semiconductor integrated circuit (CMOS or the like) and a micro machine are monolithically integrated on a semiconductor substrate, a technology capable of manufacturing the integrated MEMS without usi...
03/06/2012
8129707Semiconductor integrated circuit device
With a high-speed nonvolatile phase change memory, reliability in respect of the number of refresh times is enhanced. In a memory cell forming area of a phase change memory using a MISFET as a transistor for selection of memory cells, a phase change material layer o...
03/06/2012
8129705Nonvolatile memory device and method of manufacturing the same
Provided is a nonvolatile memory device including a phase-change memory configured with cross-point memory cells in which memory elements formed of a phase-change material and selection elements formed with a diode are combined. A memory cell is configured with a me...
03/06/2012
8128351Seals in steam turbine
A seal structure for a steam turbine is provided, which is capable of suppressing transfer of heat generated by a friction between a rotating portion and a fixed portion to the rotating portion and of suppressing an increase in the temperature of the rotating portio...
03/06/2012
8127549Burner and gas turbine combustor
A burner is provided that has high flame stability and reduces NOx emissions. In the burner, air holes of an air hole member have a central axis inclined relative to a burner central axis. The leading end portion of a first fuel nozzle is configured to be abl...
03/06/2012
8127322Optical disc drive with main shaft having end portion of particular configuration
For the purpose of suppressing an increase of temperature of a laser element, in an optical disc drive, even in case when recording/reproducing at such a low double speed that almost no expectation can be made upon the effect of the convection cooling due to circula...
02/28/2012
8127298Operations management apparatus of information-processing system
Information processing equipment and power/cooling facilities are managed together for power savings without degrading system processing performance. An operations management apparatus 60 is connected to an equipment group 201 to 20
02/28/2012
8127103Storage apparatus, memory area managing method thereof, and flash memory package
A storage device is provided, which allows a write area associated with a data area of interest to be allocated according to write performance of a host computer. The storage apparatus includes one or more flash memory packages having a plurality of flash memories a...
02/28/2012
8127102Storage system, copy method, and primary storage apparatus
A storage system having a primary storage apparatus for storing data from a host computer in a primary logical volume, and a secondary storage apparatus connected to the primary storage apparatus, for providing a secondary logical volume for storing a copy of the da...
02/28/2012
8127101File server which conducts a memory test upon boot up
Provided is a file server providing a file service to a host computer, including an interface coupled to the host computer; a processor; a memory; and an interface coupled to a disk drive. The file server is configured to calculate a capacity of storage areas in the...
02/28/2012
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