Patents by Inventor Takaharu Ishida

Takaharu Ishida 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).

  • Patent number: 10103575
    Abstract: A communicating unit 113 of a power interchange management system 101 is coupled to a plurality of power interchange apparatuses 102 that control electrical equipment 131 to 133. Each power interchange apparatus is coupled via a system power supply line 160. A computing unit 117 creates a group for interchanging power by acquiring prescribed pieces of information 126 to 128 from the respective power interchange apparatuses and selecting a plurality of prescribed power interchange apparatuses based on the prescribed pieces of information. Prescribed conditions include a condition related to control power. The condition related to control power may be that a first power interchange apparatus on a power transmitting side has power for power transmission control necessary for transmitting power and, at the same time, a second power interchange apparatus on a power receiving side has power for power reception control necessary for receiving power.
    Type: Grant
    Filed: February 13, 2014
    Date of Patent: October 16, 2018
    Assignee: HITACHI, LTD.
    Inventors: Hiroki Satoh, Takaharu Ishida
  • Patent number: 9793723
    Abstract: A plurality of storage battery modules include storage battery control devices that can mutually communicate with each other and obtain a demand for electric power in a predetermined consumer in which the plurality of storage battery modules are provided. The storage battery control devices mutually transmit and receive charging/discharging electric power of the storage batteries and control charging/discharging of the plurality of storage battery modules, respectively, on the basis of the demand for electric power in the predetermined consumer.
    Type: Grant
    Filed: November 19, 2012
    Date of Patent: October 17, 2017
    Assignee: HITACHI, LTD.
    Inventors: Taminori Tomita, Yasuko Shiga, Takaharu Ishida, Michiki Nakano
  • Patent number: 9722443
    Abstract: There is a request for charging and discharging of a lithium-ion battery with as less degradation as possible. In an operation using only binary values as in conventional technology, however, in a charged state in which the battery is used, there is a high possibility that the battery is used toward accelerating the degradation thereof. In a power distribution device for distributing power between a plurality of batteries and a plurality of customers, when distributing the power of the batteries to the loads of the customers, by being based at least on the degradation information of the batteries, the state of charge, and the temperature data of the batteries, a battery discharging function is achieved that makes the degradation of the batteries minimum.
    Type: Grant
    Filed: September 16, 2011
    Date of Patent: August 1, 2017
    Assignee: HITACHI, LTD.
    Inventors: Takaharu Ishida, Kazumi Rissen, Tohru Watanabe
  • Publication number: 20170012467
    Abstract: A communicating unit 113 of a power interchange management system 101 is coupled to a plurality of power interchange apparatuses 102 that control electrical equipment 131 to 133. Each power interchange apparatus is coupled via a system power supply line 160. A computing unit 117 creates a group for interchanging power by acquiring prescribed pieces of information 126 to 128 from the respective power interchange apparatuses and selecting a plurality of prescribed power interchange apparatuses based on the prescribed pieces of information. Prescribed conditions include a condition related to control power. The condition related to control power may be that a first power interchange apparatus on a power transmitting side has power for power transmission control necessary for transmitting power and, at the same time, a second power interchange apparatus on a power receiving side has power for power reception control necessary for receiving power.
    Type: Application
    Filed: February 13, 2014
    Publication date: January 12, 2017
    Applicant: HITACHI, LTD.
    Inventors: Hiroki Satoh, Takaharu Ishida
  • Patent number: 9483306
    Abstract: A calculation device is provided that executes calculations within real-time restrictions. The calculation device implements a step of predicting a processing time of a calculation related to the amount and property of input data based on a prediction model; a step of adjusting the processing time by decreasing the amount of data used for the calculation or decreasing the number of iterative calculations when the processing time exceeds a time slice allocated to the calculation; a step of executes the calculation using the adjusted processing time; a step of updating, as required, the prediction model used for predicting the processing time according to the result of the calculation which is executed in a period where the calculation is not performed while implementing a change of the amount of data or the number of iterative calculations or change to an approximation.
    Type: Grant
    Filed: August 26, 2011
    Date of Patent: November 1, 2016
    Assignee: Hitachi, Ltd.
    Inventors: Yoshiyuki Tajima, Koichiro Iijima, Tohru Watanabe, Takaharu Ishida
  • Publication number: 20160218543
    Abstract: The electric power loss at the time of charging/discharging storage batteries is reduced. An electric power system control device maintains a balance of power supply and demand of an electric power system by controlling charging/discharging of a storage battery, and includes a frequency detection unit; a frequency prediction unit which predicts the frequency from the frequency calculated by the frequency detection unit and history data of power generation/load supply-demand data. A charging/discharging amount determination unit sets a charging/discharging amount corresponding to a value lower or higher than the frequency of the electric power system predicted by the frequency prediction unit within a range not exceeding a lower or higher limit value of the frequency and determines the charging/discharging amount of the storage battery based on the value. And, a control command unit transmits a control command to the storage battery based on a result of the charging/discharging amount determination unit.
    Type: Application
    Filed: September 27, 2013
    Publication date: July 28, 2016
    Applicant: Hitachi, Limited
    Inventors: Takaharu ISHIDA, Shinsuke ANDOH, Hiroki SATOH, Hideyuki KOBAYASHI, Kazuya SHOJIKI
  • Patent number: 9225198
    Abstract: A power monitoring and control apparatus and system are provided, which level charge loads of electric vehicles over an overall power system as well as make the power loads fall within the maximum contract power, in plug-in charging of the electric vehicles in individual houses. The power monitoring and control apparatus is used in charging a battery-mounted equipment from the power system through a battery charger. The apparatus compares a current value available for charging the battery-mounted equipment from the power system with a charging current value requested to the battery charger from the battery-mounted equipment, and employs as the charging current to the battery-mounted equipment a smaller one among the charging current available value and the charging request value.
    Type: Grant
    Filed: February 3, 2012
    Date of Patent: December 29, 2015
    Assignee: Hitachi, Ltd.
    Inventor: Takaharu Ishida
  • Patent number: 9178381
    Abstract: The battery charging of electric vehicles, etc. is controlled so that the impact on the electric power system is lightened even when a lot of electric vehicles, etc. start the charging all at once. A device for controlling an electricity storage device installed in an electric vehicle or the like calculates a voltage drop by applying a load current at the time of performing the charging of the electricity storage device, and limits the charging quantity of the storage battery (installed in the electric vehicle or the like) based on the calculated voltage drop so that the voltage drop of the electric power system remains less than a prescribed level. Consequently, it becomes possible to reduce the voltage fluctuation around each of the electric vehicles, etc. that is about to execute the charging in cases where a lot of electric vehicles, etc. start the charging all at once.
    Type: Grant
    Filed: August 1, 2011
    Date of Patent: November 3, 2015
    Assignee: Hitachi, Ltd.
    Inventors: Takaharu Ishida, Masahiro Watanabe
  • Patent number: 9153966
    Abstract: Provided are charging/discharging spots which are connected to a power grid and which charge storage batteries of electric vehicles connected thereto and discharge charged power of the storage batteries to the power grid; a data center which collects and stores current position information of electric vehicles located in a territory and charging state information of storage batteries of the electric vehicles; and a power aggregator which ranks degrees of necessity of charging/discharging the storage batteries of the respective electric vehicles based on the stored position information, the charging state information of the storage batteries and position information of the charging/discharging spots and creates a ranking list indicating the ranks. The power aggregator distributes information for guiding each of the electric vehicles to a designated one of the charging/discharging spots for charging or discharging in accordance with the ranking list.
    Type: Grant
    Filed: August 24, 2010
    Date of Patent: October 6, 2015
    Assignee: Hitachi, Ltd.
    Inventor: Takaharu Ishida
  • Publication number: 20150249350
    Abstract: A plurality of storage battery modules include storage battery control devices that can mutually communicate with each other and obtain a demand for electric power in a predetermined consumer in which the plurality of storage battery modules are provided. The storage battery control devices mutually transmit and receive charging/discharging electric power of the storage batteries and control charging/discharging of the plurality of storage battery modules, respectively, on the basis of the demand for electric power in the predetermined consumer.
    Type: Application
    Filed: November 19, 2012
    Publication date: September 3, 2015
    Applicant: Hitachi, Ltd.
    Inventors: Taminori Tomita, Yasuko Shiga, Takaharu Ishida, Michiki Nakano
  • Publication number: 20150115969
    Abstract: A storage battery analysis system includes a storage device storing data of time series variation of a voltage value and a current value during a charging period of a storage battery and data of time series variation of the voltage value and the current value during the charging period of the storage battery; and an arithmetic device that executes a process to read out the time series variation data of the voltage value and the current value during the charging period of the battery, compares the read time series variation data, identifies a difference in the time series variation between the initial usage period and the analysis period, and stores in the storage device the difference as an index indicating a degradation state of the storage battery.
    Type: Application
    Filed: March 2, 2012
    Publication date: April 30, 2015
    Applicants: Hitachi Solutions, Ltd., Hitachi, Ltd
    Inventors: Takaharu Ishida, Kazumi Rissen, Taminori Tomita, Michiki Nakano, Yasuko Shiga, Hiroki Kurita
  • Publication number: 20140210267
    Abstract: There is a request for charging and discharging of a lithium-ion battery with as less degradation as possible. In an operation using only binary values as in conventional technology, however, in a charged state in which the battery is used, there is a high possibility that the battery is used toward accelerating the degradation thereof. In a power distribution device for distributing power between a plurality of batteries and a plurality of customers, when distributing the power of the batteries to the loads of the customers, by being based at least on the degradation information of the batteries, the state of charge, and the temperature data of the batteries, a battery discharging function is achieved that makes the degradation of the batteries minimum.
    Type: Application
    Filed: September 16, 2011
    Publication date: July 31, 2014
    Applicant: HITACHI, LTD.
    Inventors: Takaharu Ishida, Kazumi Rissen, Tohru Watanabe
  • Publication number: 20140189416
    Abstract: A calculation device is provided that executes calculations within real-time restrictions. The calculation device implements a step of predicting a processing time of a calculation related to the amount and property of input data based on a prediction model; a step of adjusting the processing time by decreasing the amount of data used for the calculation or decreasing the number of iterative calculations when the processing time exceeds a time slice allocated to the calculation; a step of executes the calculation using the adjusted processing time; a step of updating, as required, the prediction model used for predicting the processing time according to the result of the calculation which is executed in a period where the calculation is not performed while implementing a change of the amount of data or the number of iterative calculations or change to an approximation.
    Type: Application
    Filed: August 26, 2011
    Publication date: July 3, 2014
    Applicant: Hitichi, Ltd.
    Inventors: Yoshiyuki Tajima, Koichiro Iijima, Tohru Watanabe, Takaharu Ishida
  • Publication number: 20130119947
    Abstract: The battery charging of electric vehicles, etc. is controlled so that the impact on the electric power system is lightened even when a lot of electric vehicles, etc. start the charging all at once. A device for controlling an electricity storage device installed in an electric vehicle or the like calculates a voltage drop by applying a load current at the time of performing the charging of the electricity storage device, and limits the charging quantity of the storage battery (installed in the electric vehicle or the like) based on the calculated voltage drop so that the voltage drop of the electric power system remains less than a prescribed level. Consequently, it becomes possible to reduce the voltage fluctuation around each of the electric vehicles, etc. that is about to execute the charging in cases where a lot of electric vehicles, etc. start the charging all at once.
    Type: Application
    Filed: August 1, 2011
    Publication date: May 16, 2013
    Applicant: HITACHI, LTD.
    Inventors: Takaharu Ishida, Masahiro Watanabe
  • Publication number: 20130096725
    Abstract: There is provided an electric power control apparatus in an electric power system (11) with power sources connected thereto, the power sources including a generator, and a storage cell, including a power aggregator (4) for selecting the power sources on the basis of a CO2 origination amount.
    Type: Application
    Filed: February 25, 2011
    Publication date: April 18, 2013
    Applicant: Hitachi, Ltd.
    Inventors: Takaharu Ishida, Hiroto Sasaki
  • Publication number: 20120274268
    Abstract: A power monitoring and control apparatus and system are provided, which level charge loads of electric vehicles over an overall power system as well as make the power loads fall within the maximum contract power, in plug-in charging of the electric vehicles in individual houses. The power monitoring and control apparatus is used in charging a battery-mounted equipment from the power system through a battery charger. The apparatus compares a current value available for charging the battery-mounted equipment from the power system with a charging current value requested to the battery charger from the battery-mounted equipment, and employs as the charging current to the battery-mounted equipment a smaller one among the charging current available value and the charging request value.
    Type: Application
    Filed: February 3, 2012
    Publication date: November 1, 2012
    Applicant: Hitachi, Ltd.
    Inventor: Takaharu ISHIDA
  • Patent number: 8291464
    Abstract: A digital broadcast receiving apparatus receives a digital broadcast signal, which consists of layers each obtained by dividing a transmission bandwidth into a plurality of segments and combining some of the segments, and outputs images and/or sound from one of the layers constituting the received digital signal. This apparatus is characterized by comprising broadcasting format retention means (channel to broadcasting format correspondence table database) for retaining the broadcasting format, for each layer, of each broadcast station and switching means (layer switching means) for switching the output layer based on the broadcasting format, for each layer, of each broadcast station retained in the broadcasting retention means. Thus, this apparatus can output images and sound without interruption.
    Type: Grant
    Filed: April 10, 2009
    Date of Patent: October 16, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Osamu Tomobe, Yukihiro Kawamata, Takaharu Ishida, Kimiya Yamaashi
  • Publication number: 20120249068
    Abstract: Provided are charging/discharging spots which are connected to a power grid and which charge storage batteries of electric vehicles connected thereto and discharge charged power of the storage batteries to the power grid; a data center which collects and stores current position information of electric vehicles located in a territory and charging state information of storage batteries of the electric vehicles; and a power aggregator which ranks degrees of necessity of charging/discharging the storage batteries of the respective electric vehicles based on the stored position information, the charging state information of the storage batteries and position information of the charging/discharging spots and creates a ranking list indicating the ranks. The power aggregator distributes information for guiding each of the electric vehicles to a designated one of the charging/discharging spots for charging or discharging in accordance with the ranking list.
    Type: Application
    Filed: August 24, 2010
    Publication date: October 4, 2012
    Applicant: Hitachi Ltd
    Inventor: Takaharu Ishida
  • Patent number: 7984465
    Abstract: A relay station comprises an emergency information detection unit for detecting an emergency information broadcasting flag in the digital broadcasting TMCC signal transmitted from the center station; a replacement data creation unit for issuing an instruction for creating replacement contents and replacing the data when emergency information is multiplexed in the TS; and a time synchronization unit for executing time synchronization between the TS created by the data replacement and the TS before the data replacement. On a receiving terminal, the replaced data broadcasting contents can be received while prefectural broadcasting video and audio contents are continuously received.
    Type: Grant
    Filed: January 29, 2008
    Date of Patent: July 19, 2011
    Assignee: Hitachi, Ltd.
    Inventors: Takaharu Ishida, Yoshihito Sato, Osamu Tomobe, Toshiyuki Oda
  • Patent number: 7864812
    Abstract: In a digital broadcast multiplexing apparatus for multiplexing a plurality of programs on a single physical channel so as to broadcast the digital multiplexed broadcasting program, there are provided with an apparatus for correcting positions of PCR packets contained in transport streams within the respective programs, and a PCR correction value forming apparatus for applying values of correcting PCR values with respect to a result of the position corrections in order to simply execute a function capable of uniformly synchronizing the PCR packets contained in the transport streams and capable of viewing the received programs without any interruption on the reception side even when a tuning operation is carried out. Then, the digital broadcast multiplexing apparatus outputs such a broadcast program packet stream which has been multiplexed as a single broadcast program in such a manner that the PCR packets are synchronized with each other among the plurality of programs.
    Type: Grant
    Filed: February 19, 2009
    Date of Patent: January 4, 2011
    Assignee: Hitachi, Ltd.
    Inventors: Takaharu Ishida, Osamu Tomobe