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: 20140101384
    Abstract: Disclosed is a storage system that suppress occurrence of a bottleneck in the storage system, efficiently uses a bandwidth of hardware, and achieves high reliability. A storage system includes a storage apparatus that stores data, a controller that controls data input/output with respect to the storage apparatus, and an interface that couples the storage apparatus and the controller. The storage apparatus has a plurality of physical ports that are coupled to the interface. The controller logically partitions a storage area of the storage apparatus into a plurality of storage areas and provides the plurality of storage areas, or allocates the plurality of physical ports to the logically partitioned storage areas.
    Type: Application
    Filed: December 31, 2012
    Publication date: April 10, 2014
    Applicant: Hitachi, Ltd.
    Inventor: Hitachi, Ltd.
  • Publication number: 20140066313
    Abstract: The present invention provides a MgB2 multi-core wire including a plurality of MgB2 single-core wires having a MgB2 superconducting core part and a metal sheath part the metal sheath part is provided on the outer surface of the MgB2 superconducting core part, wherein a plurality of the MgB2 single-core wires is bound with each other, and a gap is provided between a plurality of the MgB2 single-core wires, and a refrigerant for flowing in the gap in a direction of a longitudinal axis of the MgB2 single-core wires.
    Type: Application
    Filed: February 4, 2013
    Publication date: March 6, 2014
    Applicant: HITACHI, LTD.
    Inventor: HITACHI, LTD.
  • Publication number: 20140046907
    Abstract: An operation arrangement work is accelerated by improving efficiency of generating an operation arrangement proposal and confirming whether the operation arrangement proposal is good or not. An operation support system has an operation arrangement proposal generation part (1110) which executes automatic generation of an operation arrangement proposal, a diagram prediction part which executes simulation of train operation in the future, a diagram display part (1120) which displays an operation schedule and the operation arrangement proposal as a diagram, and a user input part which receives input of a parameter from the user. System has a snapshot restoration part (1130) which restores snapshots of the operation arrangement proposal in an automatic generation process on the basis of a diagram change history outputted by the operation arrangement proposal generation part (1110), and a snapshot display input part (1140) which displays to the user a snapshot according to input from the user.
    Type: Application
    Filed: January 14, 2013
    Publication date: February 13, 2014
    Applicant: Hitachi, Ltd.
    Inventor: Hitachi, Ltd.
  • Publication number: 20140036662
    Abstract: An apparatus for terminating and replaying transmission control protocol (TCP) communication between a server and cellular phone is disclosed. The TCP relay apparatus performs precise control for each TCP connection in the process of executing default TCP transmission control for the server and performing wireless-optimized TCP transmission control for the cell phone while facilitating setup for determination of the type of a network to which a communication destination terminal belongs. The TCP relay apparatus includes a unit capable of setting TCP control information suitable for the characteristics of a network linked to the destination device on a per-TCP connection basis, a unit which enables an application program to instruct the TCP control information setting, and a unit which determines the network type by judging whether the connection is a passive connection to a listen port or a TCP connection to the server.
    Type: Application
    Filed: January 22, 2013
    Publication date: February 6, 2014
    Applicant: Hitachi, Ltd.
    Inventor: Hitachi, Ltd.
  • Publication number: 20140020470
    Abstract: According to a method by a frequency analysis of tap tones at the time when a tightness of a ripple member fixed by an elastic force has been tapped by a hammer or a method of detecting a response at the time when the ripple member has been vibrated, an enough precision cannot be obtained for a tightness estimation. A tapping force is applied to a plurality of positions on the member surface, thereby allowing a plurality of tap tones to be generated. Feature amounts are obtained from the plurality of tap tones. An average feature amount is obtained by averaging the feature amounts. The tightness of the ripple member is estimated from the average feature amount by using a correlation between the tightness of the ripple member and the average feature amount.
    Type: Application
    Filed: December 7, 2012
    Publication date: January 23, 2014
    Applicant: Hitachi, Ltd.
    Inventor: Hitachi, Ltd.
  • Publication number: 20140024533
    Abstract: An MgB2 superconducting wire excellent in critical current density property is supplied by using a crystalline boron powder which is low in costs and easy to obtain. For the wire, a precursor of the MgB2 superconducting wire is used, the precursor having a linear structure including a core region containing a magnesium powder and a boron powder, and a sheath region formed of a metal covering an outer circumferential portion of the core region. The boron powder is crystalline, and has a volume-mean particle size of 2 ?m or less.
    Type: Application
    Filed: January 23, 2013
    Publication date: January 23, 2014
    Applicants: HITACHI, LTD., THE UNIVERSITY OF TOKYO
    Inventors: The University of Tokyo, Hitachi, Ltd.
  • Publication number: 20140016020
    Abstract: A video signal processing apparatus, comprises: an image pickup unit, having a focus lens; an evaluation value calculator unit, specifying a region, in which brightness higher than a predetermined value lies, from within a region to be a target, for which a focal point estimation value is calculated to be used for moving the focus lens to a focal point, and to calculate the focal point estimation value by excluding the region, in which the brightness higher than the predetermined value lies, from a focal point estimation value calculation target; and a system controller unit, to be focused upon basis of the focal point estimation value calculated by the evaluation value calculator unit, wherein the system controller unit controls the focus lens to move to a position, which is determined in advance.
    Type: Application
    Filed: January 2, 2013
    Publication date: January 16, 2014
    Applicant: Hitachi, Ltd.
    Inventor: Hitachi, Ltd.
  • Publication number: 20140019430
    Abstract: A method of increasing a processing performance by setting a suitable upper limit of a resources count for each processing request according to an arrangement of hardware such as a storage device or to contents of the processing request. A processing request acceptor accepts the processing request as a data query. An auxiliary storage device forms a storage area where a database is stored. A data operation executor analyzes the accepted processing request and executed the data operations on the basis of the analyzed result. A resource manager manages the respective data operations allocated to generated processes or threads. A buffer manager caches data of the data operations upon execution of the data operations from the auxiliary storage device to a memory, and determines whether or not the data as the target of the data operations are present in the cache.
    Type: Application
    Filed: December 31, 2012
    Publication date: January 16, 2014
    Applicant: Hitachi, Ltd.
    Inventor: Hitachi, Ltd.
  • Publication number: 20140010516
    Abstract: A recording apparatus, including: a photographing unit which picks up a moving picture and a still picture; a first encoder which encodes the moving picture and the still picture by a first encoding method; a second encoder which encodes the still picture by a second encoding method which is different from the first encoding method; and a recorder which records a file of the moving picture encoded by the first encoding method, a file of the still picture encoded by the first encoding method and a file of the still picture encoded by the second encoding method, on a recording medium, wherein both of the file of the still picture encoded by the first encoding method and the file of the still picture encoded by the second encoding method, are based on one still picture picked up with a single photographing.
    Type: Application
    Filed: April 9, 2013
    Publication date: January 9, 2014
    Applicant: Hitachi, Ltd.
    Inventor: Hitachi, Ltd.
  • Publication number: 20140002987
    Abstract: An information processing system which determines an allowable temperature of intake air to an information processing apparatus based on information of a temperature of intake air to the information processing apparatus, information of a temperature of exhaust air of the information processing apparatus, information of a power consumption of the information processing apparatus, and information of an allowable temperature of exhaust air of the information processing apparatus to thereby save power of the information processing system.
    Type: Application
    Filed: December 12, 2012
    Publication date: January 2, 2014
    Applicant: Hitachi, Ltd.
    Inventor: Hitachi, Ltd.
  • Publication number: 20130312055
    Abstract: In a case where a master virtual machine, which is constructed on the basis of master information for configuring either part or all of a virtual machine, and an individual virtual machine, which is constructed on the basis of individual information that is configured partially or entirely in accordance with the master information, exist as the types of virtual machines that a physical client provides to a user terminal, a security check of a plurality of virtual machines is selectively executed, with respect to each check item, for a virtual machine of the type corresponding to the contents of the check item.
    Type: Application
    Filed: November 5, 2012
    Publication date: November 21, 2013
    Applicant: Hitachi, Ltd.
    Inventor: Hitachi, Ltd.
  • Publication number: 20130311617
    Abstract: There is provided a unit for reducing the amount of data to be transmitted and received to reduce a network load. Heartbeat acting servers monitor heartbeat signals to be transmitted and received by respective physical servers (virtual machines) at entrances of data center sites, consolidate heartbeat presence or absence information of the plural physical servers (virtual machines) within the data centers, and transmit and receive the collected heartbeat information of the respective physical servers (virtual machines) between the sites in a lump.
    Type: Application
    Filed: November 12, 2012
    Publication date: November 21, 2013
    Applicant: Hitachi, Ltd.
    Inventor: Hitachi, Ltd.
  • Publication number: 20130311623
    Abstract: Interdomain federation, for example, generation or management of a virtual network (slice) that extends among domains can be performed without changing a function of a server or a node of a network domain without a function to manage the other domain. A pseudo node receiving a management message with the same protocol as a general node is added, in interdomain management information from an own domain, the other domain part in management information is received as the management information by the pseudo node (the other domain part is concealed) and when interdomain management information is transmitted to the other domain through the pseudo node by a federation protocol and the pseudo node and the interdomain management information is received from the other domain, the other domain part in the management information is bound as the management information of the pseudo node (the other domain part is concealed) and transmitted to a management server of an own domain.
    Type: Application
    Filed: November 7, 2012
    Publication date: November 21, 2013
    Applicant: Hitachi, Ltd.
    Inventor: Hitachi, Ltd.
  • Publication number: 20130300374
    Abstract: A storage battery control system comprises multiple storage batteries disposed in a power grid, and a storage battery control apparatus. The storage battery control apparatus is communicably coupled to the multiple storage batteries and an energy management system. The storage battery control apparatus acquires storage battery information comprising a charging-discharging performance and a remaining capacity from each of the storage batteries, acquires power supply-demand prediction information showing a prediction of power supply and demand in a prescribed range from the energy management system, decides an individual charging-discharging rate for each of the storage batteries based on the storage battery information and the power supply-demand prediction information, and sends the decided individual charging-discharging rate to each of the storage batteries. Each of the storage batteries operates based on the individual charging-discharging rate received from the storage battery control apparatus.
    Type: Application
    Filed: November 6, 2012
    Publication date: November 14, 2013
    Applicant: Hitachi, Ltd.
    Inventor: Hitachi, Ltd.
  • Publication number: 20130301414
    Abstract: User traffic transmitted and received by a mobile station is distributed so as not to be converged on a gateway. The gateway includes a signaling processing device and bearer data processing devices, the signaling processing device is concentrated, and the bearer data processing devices are distributed to networks close to base stations. The signaling processing device recognizes, in response to a connection request from each mobile station, a position of the base station covering the mobile station, allocates the bearer data processing device connected to the network close to the base station, and connects the base station to the allocated bearer data processing devices.
    Type: Application
    Filed: November 6, 2012
    Publication date: November 14, 2013
    Applicant: HITACHI, LTD.
    Inventor: Hitachi, Ltd.
  • Publication number: 20130290651
    Abstract: If simultaneous replacement main system and standby system of a management module was necessary due to a failure, fault or other problem in a structure containing redundant management modules, then the management information retained in the management module will be lost. A computer system contains an external storage device that is outside the manager module. This external storage device stores the same information as the management information held by the main system management module, and after replacing the management modules the management information held in the external storage device is restored in the management module. A switch is further included between the external storage device and the management module, and controlling this switch from the management module allows the plurality of management modules to exclusively access the external memory device.
    Type: Application
    Filed: October 23, 2012
    Publication date: October 31, 2013
    Applicant: HITACHI, LTD.
    Inventor: HITACHI, LTD.
  • Publication number: 20130286955
    Abstract: In MU-MIMO communication in which an AP (access points: wireless base station) receives signals sent from plural terminals at the same time and at the same frequency, combinations of terminal users and decoding order of the received signals are determined so that interference reduction advantage by applying SIC can be effectively obtained. The access point includes: a plurality of antennas; and a scheduler used for performing the MU-MIMO communication with a plurality of terminals at the same time and at the same frequency. The scheduler is configured to determine the combinations of the terminal users on the basis of uplink communication quality information of the plurality of the terminals when the MU-MIMO communication is performed, and to send the determined combinations of the users as schedule information.
    Type: Application
    Filed: October 19, 2012
    Publication date: October 31, 2013
    Applicant: Hitachi, Ltd.
    Inventor: Hitachi, Ltd.
  • Publication number: 20130272116
    Abstract: In an example of the invention, network devices are classified into areas. Each of the areas includes edge nodes. A network management apparatus retains fault information including values each indicating whether or not a fault has occurred in each of the areas, retains detour path information including values indicating edge nodes, values indicating alternative areas to the areas and priorities assigned to the alternative areas, identifies, when determined that a fault has occurred in a first area based on the fault information, an alternative area to the first area based on the detour path information, determines, when determined that the fault has not occurred in the identified alternative area, the identified alternative area as a second area through which the active path passes, determines two edge nodes included in the second area, and detect network devices through which the active path passes between the two edge nodes.
    Type: Application
    Filed: October 4, 2012
    Publication date: October 17, 2013
    Inventor: Hitachi, Ltd.
  • Publication number: 20130223009
    Abstract: The object is to provide a power converter which is capable of minimizing an extent to which the power converter components other than the semiconductor module are thermally affected by the heat originating from the semiconductor module. A casing houses: semiconductor modules constituting a main circuit for power conversion; a capacitor electrically connected to the main circuit; drive circuits that provide the main circuit with a drive signal used in power conversion operation; a control circuit that provides the drive circuit with a control signal used to prompt the drive circuit to provide the drive signal. Within the casing, a cooling chamber including a coolant passage is formed, and a chamber wall of the cooling chamber is formed with a thermally conductive material. At least the semiconductor modules are housed inside the cooling chamber, and at least the capacitor and the control circuit are disposed outside the cooling chamber.
    Type: Application
    Filed: March 15, 2013
    Publication date: August 29, 2013
    Applicant: Hitachi, Ltd.
    Inventor: Hitachi, Ltd.
  • Publication number: 20130219903
    Abstract: Disclosed is a gas turbine combustor for stably burning low-BTU gases, such as blast furnace gases, that are heavily laden with CO2. The gas turbine combustor includes a double-swirling burner with an inner swirler and an outer swirler, the burner having a configuration with gas fuel injection holes and air injection holes arranged at alternate positions in the inner swirler and with gas injection holes arranged in the outer swirler. In addition, fuel injection holes for enhancing flame stability are provided at positions radially inward of the inner swirler. An inner flame by the inner swirler and an outer flame by the outer swirler interact with each other to stably burn the low-BTU gas. In the inner swirler, the gas injection holes and air injection holes arranged at alternate positions contributes to raising a temperature of the inner flame to a level required for flame stabilization.
    Type: Application
    Filed: February 15, 2013
    Publication date: August 29, 2013
    Applicant: HITACHI, LTD.
    Inventor: HITACHI, LTD.