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Assignee: Hitachi, Ltd.


Location: Tokyo, JP
No. of patents: 32239

1                      
NumberTitleIssue Date
8185793Data reproducing apparatus
A data reproducing apparatus has a nonvolatile memory in addition to a memory for data processing. When data error is uncorrected, data and error correction codes other than uncorrected data are accumulated in the memory for data processing. Corrected data is couple...
05/22/2012
8185775Virtual computer system and control method thereof
When a failure occurs in an LPAR on a physical computer under an SAN environment, a destination LPAR is set in another physical computer to enable migrating of the LPAR and setting change of a security function on the RAID apparatus side is not necessary. When a fai...
05/22/2012
8185765Storage apparatus and its power saving control method
Provided are a storage apparatus and its power saving control method capable of performing sufficient power saving to multiple memory devices without deteriorating the response performance to a host system. If multiple logical volumes formed in disk drives configuri...
05/22/2012
8185707Storage system and path management method for multi-host environment
A storage system and a path management method, which can facilitate node replacement, are proposed. In the storage system, the host sets plural paths between the host and the volume and holds path information composed of management information on each of the paths. ...
05/22/2012
8185667Storage system comprising power saving function
A storage system constituted such that power saving to an administrator-desired storage device can be performed from a management device. That is, the storage system comprises a power-saving indication receiving section for receiving from a management console a powe...
05/22/2012
8185582Storage system, management server, system reconfiguration support method for a storage system, and system reconfiguration support method for a management server
In order to provide support for a system to operate in a manner appropriate for system requests desired by a user, a management server acquires functions corresponding to system requests acquired using a user interface using a second table for storing a corresponden...
05/22/2012
8185570Three-term input floating-point adder-subtractor
The adder-subtractor includes a pre-processing circuit which divides three inputted terms into a mantissa having an exponent of maximum value, mantissa having an exponent of intermediate value and mantissa having an exponent of minimum magnitude and outputting a man...
05/22/2012
8185502Backup method for storage system
The present invention provides a backup method that makes it possible to specify the recovery-enabled time of an application even in a case where a backup has been performed without staticizing the application. In response to a first instruction from a management co...
05/22/2012
8185500Information processing apparatus, and operation method of storage system
A server apparatus performs data I/O processing on a P-VOL in response to a request from a client apparatus and includes a file system which receives data write and read requests in units of files from the client apparatus. The server apparatus stores, into a D-VOL,...
05/22/2012
8185216Plant controlling device and method, thermal power plant, and its control method
A controlling device that includes a model that predicts the value of a measured signal obtained when an operation signal is given to a thermal power generation plant, a function that learns a method of generating a model input such that a model output satisfies the...
05/22/2012
8185159Wireless communication system
A wireless communication system including a wireless terminal, a plurality of base stations and a call processing control unit is disclosed. The wireless terminal, upon reception of the notification information from any of the base stations, judges whether the area ...
05/22/2012
8184992Optical field receiver and optical transmission system
An optical field receiver comprises an optical brancher that branches a received optical multilevel signal into first and second optical signals; an optical delayed detector that performs delayed detection on the first optical signal by a delayed detector with a del...
05/22/2012
8184977Optical line terminal capable of active bandwidth allocation for passive optical network system
In a GPON system conforming to ITU-T Recommendations G.984.3, an optical line terminal is provided which has an active bandwidth allocation function that preferentially puts small bandwidth signals in a particular segment of a frame, e.g., at a head of the frame, to...
05/22/2012
8184976Passive optical network system and operating method thereof
The passive optical network includes a master station and slave stations connected via an optical fiber network including an optical splitter and a plurality of optical fibers. The master station includes a bandwidth control unit which decides a volume of a transmis...
05/22/2012
8184975Passive optical network system and optical line terminator
In a passive optical network system in which signals from a master station to plural slave stations are time-division multiplexed and transmitted, the slave stations different in transmission speed are mixedly contained. The master station (OLU) performs ranging for...
05/22/2012
8184957Video recording method and video recording device
An increase in the number of files to be managed is suppressed as much as possible even if the number of video recording is increased when the video is recorded on a recording medium. A file is produced according to a format based on a BDMV-s standard that is so def...
05/22/2012
8184950Recording apparatus optical disk and computer-readable recording medium
Arrangements including a specifying unit for specifying a local recording time in a location where the data has been recorded, in accordance with in accordance with the data recording time information (REC_TM), the time zone information (TM_ZONE), and the recording ...
05/22/2012
8184949Recording apparatus optical disk and computer-readable recording medium
A reproduction apparatus includes a specifying unit for specifying a local recording time in a location where the data first or last recorded on the data group has been recorded while the data is reproduced, and wherein the specifying means calculates, by (REC_TM)âˆ...
05/22/2012
8184948Recording apparatus optical disk and computer-readable recording medium
Data management information includes: recording time zone information (REC_TM_ZONE) at a time of recording data, indicating a time difference between the world standard time (Greenwich Mean Time) and a standard time in a location where the data of the group data for...
05/22/2012
8184860Image processing device for controlling a plurality of tasks
An image processing device of the present invention performs a task to execute an image processing This image processing device comprises a picture frame assigning unit that assigns an identification number to the image data to be collected by a picture collection d...
05/22/2012
8184724Wireless communication system and wireless communication method
In a wireless communication system in which a sending side derives transmit weight vectors based on feedback information and carries out precoding, performance degradation is caused when the channel at the time when the transmit weight vectors are derived and the tr...
05/22/2012
8184700Image decoder
The present invention relates to an image decoder which implements high speed image decoding with a low cost and simple configuration. By a stream dividing module, an input video stream is divided in units of frames as a plurality of frame rows for distribution. Eac...
05/22/2012
8184634Packet transfer method and node apparatus
In a L2VPN, where Ethernet frames are encapsulated and transferred, when an edge node disposed at an entrance of the L2VPN encapsulates an Ethernet frame, the data type of the payload of the Ethernet frame is checked. If the payload data type includes time-to-live (...
05/22/2012
8184575Packet communication network and subscriber-associated-information delivery controller
In a packet communication network comprising an MNO network, and an MVNO network including an application server for providing an information service to wireless terminals via the MNO network, the MNO network includes a subscriber-associated-information delivery con...
05/22/2012
8184463Semiconductor apparatus
The need for mediation operation is eliminated by adoption of a connection topology in which a circuit for executing one transmission (TR—00T), and a circuit for executing a plurality of receptions (TR—10R, TR—...
05/22/2012
8184438Control device
A modular control device comprises a control board, a sub-module and a housing cover, with a microcomputer mounted on the control board. The sub-module has a sub-module case provided with a wiring layer that is mounted into a wall of the sub-module case. Electronic ...
05/22/2012
8184084Liquid crystal display control device
There is provided a liquid crystal display control device which can display pictures in a magnification mode by using only a memory having a low-speed access and a low storage capacity. When a video signal has intermediate resolution or less, the enlargement process...
05/22/2012
8183862Eddy current testing device
An eddy current testing device which confirms that a change in characteristics of a target object is detected regardless of the magnitude of the change and specifying the position of a portion from which the change is detected. The device uses an eddy current probe ...
05/22/2012
8183735Rotating electrical machine
The present invention provides a rotating electrical machine including a rotor core that does not produce narrow areas in rotor slots even if circumferential ends of fan-shaped segment cores are displaced radially outwardly and circumferentially during operation. In...
05/22/2012
8183681Semiconductor device
A semiconductor device which includes a semiconductor chip; an electrically conductive base electrode bonded to the lower surface of the chip by a first bonding member; an electrically conductive lead electrode bonded to the upper surface of the chip by a second bon...
05/22/2012
8183635Semiconductor device
A technique to be applied to a semiconductor device for achieving low power consumption by improving a shape at a boundary portion of a shallow trench and an SOI layer of an SOI substrate. A position (SOI edge) at which a main surface of a silicon substrate and a li...
05/22/2012
8183054Instrument and method for collecting nucleic acids
An instrument and a method for conveniently collecting nucleic acids from a biological nucleic acid-containing sample are provided. A nucleic acid-capturing tip having silica-containing solid phases enclosed therein in such a state as being capable of coming into co...
05/22/2012
8182957Fuel cell, polymer electrolyte and ion-exchange resin for the same
A fuel cell includes an electrode assembly, current collectors, and electroconductive separators. The electrode assembly includes an anode, a cathode, and a polymer electrolyte membrane arranged between the anode and cathode. The current collectors are arranged adja...
05/22/2012
8182097Projection type image display apparatus
A projection type image display apparatus includes an image display element, a projection unit including a first lens group and a second lens group formed with a plural number of lenses, a reflection mirror configured to reflect light emitted from the second lens gr...
05/22/2012
8181647Powder medicine administering device
A powder medicine administering device includes a main body, an air supply section, and a movable member slidably attached to the main body, and arranged to be moved relative to the main body from a first position through a second position to a third position. One o...
05/22/2012
8181628Throttle valve controller for internal combustion engine
A throttle valve controller for an internal combustion engine has a throttle valve driven by a motor. The target opening of the throttle valve is determined based on the operating state of the vehicle or internal combustion engine. A first lower limit is determined ...
05/22/2012
8181268Scanning probe microscope and method of observing sample using the same
Optical information and topographic information of the surface of a sample are measured at a nanometer-order resolution and with high reproducibility without damaging a probe and the sample by combining a nanometer-order cylindrical structure with a nanometer-order ...
05/15/2012
8180989Storage controller and storage control method
A storage controller having a plurality of storage devices and a control circuit providing a plurality of virtual volumes, to each of which a storage area in a plurality of pool volumes provided with the plurality of storage devices can be mapped for writing data in...
05/15/2012
8180979Storage system and operation method of storage system
The present invention is able to improve the processing performance of a storage system by respectively virtualizing the external volumes and enabling the shared use of such external volumes by a plurality of available virtualization storage devices. By virtualizing...
05/15/2012
8180962Performance managed computer, program and method for a storage system
Since the threshold excess is judged by a value of high-workload IO of backup that is designed on the assumption that the workload of storage is high, whether the performance limit has been reached remains uncertain. Furthermore, although an optimistic prediction tr...
05/15/2012
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