Patents by Inventor Hitachi, Ltd.

Hitachi, Ltd. has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20130166841
    Abstract: A storage system and data management method is provided that improves the reliability and fault tolerance of the hard disks saving data utilizing an AOU function. A storage system comprises a first correlating section for correlating a plurality of RAID groups composed of a plurality of physical disks, and the pool region, a second correlating section for correlating the pool region and the storage regions of the virtual volumes, a first allocation section for allocating first data from the host apparatus to the first storage region of the first RAID group based on write requests from the host apparatus, and a second allocation section for distributing second data from the host apparatus at and allocating the second data to any storage regions of the RAID group, with the exception of the first storage region of the first RAID group allocated by the first allocation section, based on write requests.
    Type: Application
    Filed: February 21, 2013
    Publication date: June 27, 2013
    Applicant: HITACHI, LTD.
    Inventor: HITACHI, LTD.
  • Publication number: 20130161807
    Abstract: Reliability is improved by improving adhesiveness, crack resistance, and moisture resistance of a metal member-resin jointed body by enhancing adhesiveness between the metal member and the resin. A jointed body of a metal member and a resin including: an intermediate layer and a silane coupling agent layer formed on the metal member at an interface between the metal member and the resin, wherein the silane coupling agent layer and the resin are contacted; the intermediate layer is any one of an oxide layer of the metal, a chelating agent layer, a composite layer made of the oxide layer and the chelating agent layer, and a mixed layer made of the oxide and the chelating agent; and the intermediate layer has an electrically non-insulating characteristic, and a method of manufacturing the same.
    Type: Application
    Filed: December 19, 2012
    Publication date: June 27, 2013
    Applicant: HITACHI, LTD.
    Inventor: HITACHI, LTD.
  • Publication number: 20130160466
    Abstract: It is an objective of the invention to provide an Ni-based forged alloy having good large ingot formability and good hot formability as well as high mechanical strength at high temperature. There is provided an Ni-based forged alloy comprising: 0.001 to 0.1 mass % of C; 0.001 to 0.01 mass % of B; 16 to 22 mass % of Cr; 0.5 to 1.5 mass % of Al; 0.1 to 6.0 mass % of W; 3.5 to 5.5 mass % of Nb; 0.8 to 3.0 mass % of Ti; 16 to 20 mass % of Fe; 2.0 mass % or less of Mo; and the balance including Ni and unavoidable impurities, in which: a segregation parameter Ps defined by a formula of “Ps (mass %)=1.05[Al concentration (mass %)]+0.6[Ti concentration (mass %)]?0.8[Nb concentration (mass %)]?0.3[Mo concentration (mass %)]” satisfies a relationship of “Ps??3.0 mass %”; and total amount of W and Mo is 1.75 atomic % or less.
    Type: Application
    Filed: December 20, 2012
    Publication date: June 27, 2013
    Applicant: HITACHI, LTD.
    Inventor: Hitachi, Ltd.
  • Publication number: 20130166247
    Abstract: A process of the invention analyzes a moving speed using acceleration data by an acceleration sensor and calculates a moving distance of the object. The process removes each of given candidate values of drift components from angular velocity data by a gyro sensor and generates relative azimuths data pieces. Based on the respective relative azimuths data pieces, the process calculates moving directions of the object. Using the moving distance and moving directions calculated, the process creates plural moving loci corresponding to the candidate values of drift components. By comparing the positions of actual starting and end points of moving in a building with the positions of starting and end points of each moving locus, the process evaluates the moving loci and determines an optimal moving locus out of the moving loci, based on the evaluation result.
    Type: Application
    Filed: December 18, 2012
    Publication date: June 27, 2013
    Applicant: Hitachi, Ltd.
    Inventor: Hitachi, Ltd.
  • Publication number: 20130160583
    Abstract: Disclosed is a roller screw including a screw shaft and a nut cage with the screw shaft inserted therein, the roller screw being adapted to convert a rotary motion of either the screw shaft or the cage into a rectilinear or linear motion of the other; the roller screw further including: a plurality of rollers, each formed to roll along a flank surface la of the screw shaft; and plurality of roller bearings, each formed to support one of the rollers so as to allow the roller to rotate. At least one of the roller bearings is retained in the case so as to move forward and backward in an axial direction of rotation of the corresponding roller supported by the roller bearing.
    Type: Application
    Filed: December 10, 2012
    Publication date: June 27, 2013
    Applicant: HITACHI, LTD.
    Inventor: Hitachi, Ltd.
  • Publication number: 20130152586
    Abstract: An integrated solar combined cycle power generation system includes a solar heat collector for collecting solar heat and generating solar heat steam; a gas turbine; a gas turbine exhaust heat recovery boiler; and a steam turbine; wherein the solar heat steam is decreased in temperature by a solar heat steam desuperheater under a normal condition, and the temperature decrease is stopped or a temperature decrease rate is reduced when the solar heat steam temperature falls due to a cause such as a sudden weather change, wherein the solar heat steam is joined to generated steam by a high-pressure drum or exit steam of a primary superheater, and wherein a main steam temperature control by a main steam temperature control valve is combined so that the main steam, the temperature of which is controlled to a predetermined temperature, is supplied to the steam turbine.
    Type: Application
    Filed: December 13, 2012
    Publication date: June 20, 2013
    Applicant: Hitachi, Ltd.
    Inventor: Hitachi, Ltd.
  • Publication number: 20130152682
    Abstract: A high-performance angular rate detecting device is provided. A driving part including a drive frame and a Coriolis frame is levitated by at least two fixing beams which share a fixed end and are extending in a direction orthogonal to a driving direction, thereby vibrating the driving part. Even when a substrate is deformed by mounting or heat fluctuation, internal stress generated to the fixed beam and a supporting beam is small, thereby maintaining a vibrating state such as resonance frequency and vibration amplitude constant. Therefore, a high-performance angular rate detecting device which is robust to changes in mounting environment can be obtained.
    Type: Application
    Filed: November 14, 2012
    Publication date: June 20, 2013
    Applicant: HITACHI, LTD.
    Inventor: Hitachi, Ltd.
  • Publication number: 20130159806
    Abstract: Packet communication apparatus connects plural LANs to each other, in termination of a WAN that conducts data communication using handshake communication protocol. Apparatus buffers data packets between the LANs, and transfers, as a proxy, response packets and data packets to a terminal device. The apparatus stops transmission of data packets belonging to an arbitrary packet flow when the reception of the response packets belonging to the packet flow from the WAN is ceased for a network outage detection time or more set, while transmitting data packets belonging to the arbitrary packet flow. The apparatus retransmits a first data packet whose corresponding response packet is not received, belonging to the packet flow immediately after the data packet transmission stops, and retransmits all data packets whose corresponding response packets are not received, belonging to the packet flow, when receiving the response packets from the WAN.
    Type: Application
    Filed: December 10, 2012
    Publication date: June 20, 2013
    Applicant: Hitachi, Ltd.
    Inventor: Hitachi, Ltd.
  • Publication number: 20130159513
    Abstract: An object is to prevent overload on a shared resource. In an information processing system including a resource possibly shared between a plurality of work loads, an additional load is applied to the resource while operating the work loads, and the performances of the work loads are monitored.
    Type: Application
    Filed: December 17, 2012
    Publication date: June 20, 2013
    Applicant: HITACHI, LTD.
    Inventor: HITACHI, LTD.
  • Publication number: 20130159651
    Abstract: A storage system and storage migration method where migration may be carried out to an access destination of a host apparatus without stopping the exchange of data between the host apparatus and the storage apparatus. This system is provided with a host apparatus inputting and outputting requests for data, a migration source storage apparatus having logical unit(s) correlated to storage regions of physical devices for storing the data, a migration destination storage apparatus having logical unit(s). The system also has an editing unit for editing configuration control information relating to the logical unit(s) for the migration source so as to match with settings for the migration destination storage apparatus, an importing unit for importing edited configuration control information to the migration destination storage apparatus, and a mapping unit for mapping the logical unit(s) of the migration source to the logical unit(s) of the migration destination.
    Type: Application
    Filed: February 12, 2013
    Publication date: June 20, 2013
    Applicant: HITACHI, LTD.
    Inventor: HITACHI, LTD.
  • Publication number: 20130160065
    Abstract: It is provided a video distribution system including a video distribution module, a control module, and a bookmark management module. The bookmark management module manages a first type bookmark whose status is not changed by viewing of the video and a second type bookmark whose status is changeable after the viewing of the video. The control module generates screen data that enables one of the first type bookmark and the second type bookmark to be selected with regard to the video stored in the library, transmits the generated screen data to the one of the receiving terminals, and sets one of the first type bookmark and the second type bookmark, which is selected by a user using the one of the receiving terminals, for the video and record the one of the first type bookmark and the second type bookmark in the bookmark management module.
    Type: Application
    Filed: December 6, 2012
    Publication date: June 20, 2013
    Applicant: HITACHI, LTD.
    Inventor: Hitachi, Ltd.
  • Publication number: 20130146897
    Abstract: A trench groove is formed and a silicon oxide film is buried in the periphery of a channel region of (0001) surface 4h-SiC semiconductor element. The oxide film in the trench groove is defined in such a planar layout that a tensile strain is applied along the direction of the c-axis and a compressive strain is applied along two or more of axes on a plane perpendicular to the c-axis. For example, trench grooves buried with an oxide film may be configured to such a layout that they are in a trigonal shape surrounding the channel, or are arranged symmetrically with respect to the channel as a center when arranged discretely.
    Type: Application
    Filed: November 23, 2012
    Publication date: June 13, 2013
    Applicant: HITACHI, LTD.
    Inventor: Hitachi, Ltd.
  • Publication number: 20130149864
    Abstract: Wirings mainly containing copper are formed on an insulating film on a substrate. Then, after forming insulating films for reservoir pattern and a barrier insulating film, an insulating film for suppressing or preventing diffusion of copper is formed on upper and side surfaces of the wirings, the insulating film on the substrate, and the barrier insulating film. Here, thickness of the insulating film for suppressing or preventing diffusion of copper at the bottom of a narrow inter-wiring space is made smaller than that on the wirings, thereby efficiently reducing wiring capacitance of narrow-line pitches. Then, first and second low dielectric constant insulating films are formed. Here, a deposition rate of the first insulating film at an upper portion of the side surfaces of facing wirings is made higher than that at a lower portion thereof, thereby forming air gaps. Finally, the second insulating film is planarized by interlayer CMP.
    Type: Application
    Filed: February 12, 2013
    Publication date: June 13, 2013
    Applicant: HITACHI, LTD.
    Inventor: Hitachi, Ltd.
  • Publication number: 20130147307
    Abstract: The purpose of the present invention is to provide a dry mica tape, and an electrically insulated coil using the same, and a electrical rotating machine using the same, with reduced amount of VOC (Volatile Organic Compound) generated during manufacturing thereof, while both of excellent impregnation property and excellent heat resistance are achieved. The dry mica tape, and the electrically insulated coil using the same, and the electrical rotating machine using the same, the dry mica tape including mica, a substrate, an adhesive which glues the mica and the substrate together, in which the adhesive includes unsaturated polyester compound which has a reactive double bond.
    Type: Application
    Filed: December 6, 2012
    Publication date: June 13, 2013
    Inventor: Hitachi, Ltd.
  • Publication number: 20130148865
    Abstract: A personal identification system, which uses a vein pattern of a finger, optimizes the amount of light of a light source based on a captured finger image and emphasizes the vein pattern during image processing for identification.
    Type: Application
    Filed: February 6, 2013
    Publication date: June 13, 2013
    Applicant: HITACHI, LTD.
    Inventor: HITACHI, LTD.
  • Publication number: 20130148972
    Abstract: An optical line terminal includes the transmission rate control table for storing a minimum bandwidth for an emergency status for each of optical network units in addition to a maximum assigned bandwidth in a normal status. When a decrease in a supply power is detected, the optical line terminal calculates a transmission clock rate providing a minimum bandwidth required by each optical network unit with reference to the transmission rate control table. The optical line terminal determines change timing of downstream and upstream transmission clock rates, and change timing of upstream data for time-division multiplexing to instruct each of the optical network units. Both the optical line terminal and the optical network unit change the transmission clock rates with substantial synchronization therebetween.
    Type: Application
    Filed: November 23, 2012
    Publication date: June 13, 2013
    Applicant: Hitachi, Ltd.
    Inventor: Hitachi, Ltd.
  • Publication number: 20130152083
    Abstract: A live migration in a virtual computer system. On a source physical computer, the control information area of the source logical FC-HBA (managed by an OS) is copied to the control information area of a dummy logical FC-HBA managed by a hypervisor. After an FC login to the dummy FC-HBA, an address conversion table is rewritten so that a host physical address for referring to the control information area of a logical HBA1? can be referred to using a guest logical address for referring to the control information area of the source FC-HBA. After the FC logout of the source FC-HBA, using a WWN of the FC used for the FC logout, a login to the destination logic FC-HBA is performed. Next, the OS on the source computer is taken over by the destination computer. Therefore, the disk accessed on the source computer can be accessed from the destination FC-HBA.
    Type: Application
    Filed: October 24, 2012
    Publication date: June 13, 2013
    Applicant: HITACHI, LTD.
    Inventor: HITACHI, LTD.
  • Publication number: 20130149177
    Abstract: A mechanism for reducing pressure pulsation includes a pair of metal dampers formed by joining two disk-shaped metal diaphragms over an entire circumference and forming a hermetically sealed space inside a joined portion, with gas being sealed in the aforementioned hermetically sealed space of the damper, has a pair of pressing members which give pressing forces to both outer surfaces of the aforementioned metal dampers at a position at an inner diameter side from the joined portion, and is unitized with the pair of pressing members being connected in a state in which they sandwich the metal damper.
    Type: Application
    Filed: January 31, 2013
    Publication date: June 13, 2013
    Applicant: Hitachi, Ltd.
    Inventor: Hitachi, Ltd.
  • Publication number: 20130151587
    Abstract: In a system without a TCP termination process at normal times, and in the case where a URL within an HTTP access is extracted from reception packets, a passage/access refusal determination of the URL is performed, and a determination result is an access refusal, the TCP termination process is performed, a filtering device has the possibility that when an UTTP access as a disconnect case is frequently performed, it is erroneously recognized as a DoS attack on the side of the Web server device. A network system has a detection unit of frequent accesses to access control object data in the same Web server device from the same client device and a disconnect unit of a TCP connection to the Web server device after detection through the detection unit.
    Type: Application
    Filed: November 2, 2012
    Publication date: June 13, 2013
    Applicant: Hitachi, Ltd.
    Inventor: Hitachi, Ltd.
  • Publication number: 20130151762
    Abstract: The present invention aims to improve the performance of accessing flash memory used as a storage medium in a storage device. In the storage device in accordance with the present invention, a storage controller, before accessing the flash memory, queries a flash controller as to whether the flash memory is accessible.
    Type: Application
    Filed: February 6, 2013
    Publication date: June 13, 2013
    Applicant: HITACHI, LTD.
    Inventor: HITACHI, LTD.