Patents by Inventor Hirotoshi Yamada

Hirotoshi Yamada 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: 9147879
    Abstract: This invention provides a nano composite porous electrode material that has high charge-discharge behavior and charge or discharge capacity and a manufacturing method thereof. It also provides a lithium-ion secondary battery using this nano composite porous electrode material. The nano composite porous electrode material according to this invention has a porous structure such that nano-size pores are three-dimensionally connected with each other wherein walls of the pores thereof are composed of olivine type LiMnPO4 and carbon, a specific surface area Sa is 55 m2g?1<Sa<248 m2g?1, an amount of contained carbon Cc is 15.5 wt %<Cc<28 wt % and a diameter of crystallite is less than 39 nm. This enables a high charge-discharge capacity and a fast charge or discharge behavior to be obtained.
    Type: Grant
    Filed: June 24, 2010
    Date of Patent: September 29, 2015
    Assignee: NAGASAKI UNIVERSITY
    Inventors: Isamu Moriguchi, Hirotoshi Yamada
  • Patent number: 8295390
    Abstract: A communications device 100, which performs data communication, includes an AC cycle sensor 30 which is connected to a power line 106 supplied with an a.c. voltage and generates a synchronous signal SS at timing of an a.c. voltage waveform AC of the power line 106; a data communicator 10 for performing data communication; and a communications controller 20 which performs communication of a control signal including information showing at least one of a communications device and a communications standard and controls the data communicator 101. When the a.c. voltage supplied to the power line 106 is an N-phase and when the cycle of the a.c. voltage waveform is T, data communication to be performed in a communication period subsequent to the period is controlled on the basis of the control signal included in the period of T/2M on condition that M is a natural multiple of N.
    Type: Grant
    Filed: December 30, 2009
    Date of Patent: October 23, 2012
    Assignees: Panasonic Corporation, Mitsubishi Electric Corporation, Sony Corporation
    Inventors: Hisao Koga, Yuji Igata, Go Kuroda, Koji Ikeda, Akio Kurobe, Hirotoshi Yamada, Hiromu Okamoto, Yoshinori Mizugai, Takehiro Sugita, Junichi Ohshima, Shigeru Takasu
  • Publication number: 20120100422
    Abstract: This invention provides a nano composite porous electrode material that has high charge-discharge behavior and charge or discharge capacity and a manufacturing method thereof. It also provides a lithium-ion secondary battery using this nano composite porous electrode material. The nano composite porous electrode material according to this invention has a porous structure such that nano-size pores are three-dimensionally connected with each other wherein walls of the pores thereof are composed of olivine type LiMnPO4 and carbon, a specific surface area Sa is 55 m2g?1<Sa<248 m2g?1, an amount of contained carbon Cc is 15.5 wt %<Cc<28 w t% and a diameter of crystallite is less than 39 nm. This enables a high charge-discharge capacity and a fast charge or discharge behavior to be obtained.
    Type: Application
    Filed: June 24, 2010
    Publication date: April 26, 2012
    Applicant: NAGASAKI UNIVERSITY
    Inventors: Isamu Moriguchi, Hirotoshi Yamada
  • Publication number: 20120094173
    Abstract: This invention provides a macroporous graphite electrode material that may be manufactured at a low temperature of 1500° C. or less and may be fast charged and discharged and a manufacturing method thereof. It also provides a lithium-ion secondary battery using this macroporous graphite electrode material. The macroporous graphite electrode material according to this invention is composed of graphite having macropores in which a ratio of specific surface area of micropores in relation to total specific surface area is not less than 0 and not more than 0.74 and a ratio of D band area and G band area in Raman spectrum (D/G area ratio) is not less than 0 and not more than 1.33.
    Type: Application
    Filed: June 24, 2010
    Publication date: April 19, 2012
    Applicant: NAGASAKI UNIVERSITY
    Inventors: Isamu Moruiguchi, Hirotoshi Yamada
  • Publication number: 20100104030
    Abstract: A communications device 100, which performs data communication, includes an AC cycle sensor 30 which is connected to a power line 106 supplied with an a.c. voltage and generates a synchronous signal SS at timing of an a.c. voltage waveform AC of the power line 106; a data communicator 10 for performing data communication; and a communications controller 20 which performs communication of a control signal including information showing at least one of a communications device and a communications standard and controls the data communicator 101. When the a.c. voltage supplied to the power line 106 is an N-phase and when the cycle of the a.c. voltage waveform is T, data communication to be performed in a communication period subsequent to the period is controlled on the basis of the control signal included in the period of T/2M on condition that M is a natural multiple of N.
    Type: Application
    Filed: December 30, 2009
    Publication date: April 29, 2010
    Applicants: PANASONIC CORPORATION, Mitsubishi Electric Corporation, Sony Corporation
    Inventors: Hisao KOGA, Yuji Igata, Go Kuroda, Koji Ikeda, Akio Kurobe, Hirotoshi Yamada, Hiromu Okamoto, Yoshinori Mizugai, Takehiro Sugita, Junichi Ohshima, Shigeru Takasu
  • Patent number: 7660365
    Abstract: A communications device 100, which performs data communication, includes an AC cycle sensor 30 which is connected to a power line 106 supplied with an a.c. voltage and generates a synchronous signal SS at timing of an a.c. voltage waveform AC of the power line 106; a data communicator 10 for performing data communication; and a communications controller 20 which performs communication of a control signal including information showing at least one of a communications device and a communications standard and controls the data communicator 101. When the a.c. voltage supplied to the power line 106 is an N-phase and when the cycle of the a.c. voltage waveform is T, data communication to be performed in a communication period subsequent to the period is controlled on the basis of the control signal included in the period of T/2M on condition that M is a natural multiple of N.
    Type: Grant
    Filed: June 30, 2006
    Date of Patent: February 9, 2010
    Assignee: Panasonic Corporation
    Inventors: Hisao Koga, Yuji Igata, Go Kuroda, Koji Ikeda, Akio Kurobe, Hirotoshi Yamada, Hiromu Okamoto, Yoshinori Mizugai, Takehiro Sugita, Junichi Ohshima, Shigeru Takasu
  • Patent number: 7301942
    Abstract: A method for determining a combination of data for transfer comprises counting the number of candidates in data for candidates of a data transfer request for each row as the number of candidates at lattice points of a lattice composed of N rows×N columns, searching for a minimum value out of count values equal to or greater than 1, selecting and storing one row showing the minimum value. Regarding the candidates in the selected row, the method also comprises counting the number of candidates in each column where candidates exist, searching for a minimum value, selecting and storing one column, deleting all candidates on the row and the column determined, and repeating these processes until no more candidates exist to determine combinations of rows and columns stored at a point of time when no more candidates exist.
    Type: Grant
    Filed: October 31, 2002
    Date of Patent: November 27, 2007
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Shinji Furuya, Hirotoshi Yamada, Nobuyuki Kobayashi
  • Publication number: 20070160172
    Abstract: A communications device 100, which performs data communication, includes an AC cycle sensor 30 which is connected to a power line 106 supplied with an a.c. voltage and generates a synchronous signal SS at timing of an a.c. voltage waveform AC of the power line 106; a data communicator 10 for performing data communication; and a communications controller 20 which performs communication of a control signal including information showing at least one of a communications device and a communications standard and controls the data communicator 101. When the a.c. voltage supplied to the power line 106 is an N-phase and when the cycle of the a.c. voltage waveform is T, data communication to be performed in a communication period subsequent to the period is controlled on the basis of the control signal included in the period of T/2M on condition that M is a natural multiple of N.
    Type: Application
    Filed: June 30, 2006
    Publication date: July 12, 2007
    Applicants: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD., MITSUBISHI ELECTRIC CORPORATION, SONY CORPORATION
    Inventors: Hisao Koga, Yuji Igata, Go Kuroda, Koji Ikeda, Akio Kurobe, Hirotoshi Yamada, Hiromu Okamoto, Yoshinori Mizugai, Takehiro Sugita, Junichi Ohshima, Shigeru Takasu
  • Patent number: 7219159
    Abstract: A searching method of a plurality of routes includes the steps of defining, as an X direction, one direction of a bidirectional transmission line connected to each of the plurality of nodes, and another direction as a Y direction; respecifying an initial node and a terminal node; searching a first shortest route extending from the specified initial node to the specified terminal node; searching a second shortest route for nodes connected to another transmission line in the X direction; searching a third shortest route extending from the specified initial node to the specified terminal node; searching a fourth shortest route for nodes connected to another transmission line in the Y direction; comparing the sum of the X group first route and second route with the sum of the Y group first route and second route; and determining the group having a smaller sum as an optimal route in the comparison.
    Type: Grant
    Filed: May 13, 2002
    Date of Patent: May 15, 2007
    Assignees: Fujitsu Limited, NTT Communications Corporation
    Inventors: Tsunehito Mouri, Osamu Nakazawa, Hiroyuki Saito, Akihito Shinozaki, Sadayo Hirata, Hirotoshi Yamada
  • Publication number: 20070064783
    Abstract: An in-home-system master station of an in-home communication system detects a frequency band (a channel number corresponding to a data communication subchannel) or a time slot used by each station of an access communication system, using a coexistence signal subchannel. Based on the detected information, the in-home-system master station determines a frequency band or a time slot to be used in the in-home communication system to which the in-home-system master station belongs, so as not to avoid overlapping the frequency or time slot used in the access communication system, and informs each in-home-system slave station of the determined frequency band or time slot.
    Type: Application
    Filed: July 5, 2006
    Publication date: March 22, 2007
    Inventors: Go Kuroda, Akio Kurobe, Koji Ikeda, Hisao Koga, Yuji Igata, Hirotoshi Yamada, Yoshinori Mizugai, Hiromu Okamoto, Junichi Ohshima, Shigeru Takasu, Takehiro Sugita
  • Patent number: 7058080
    Abstract: In a cell assembly and disassembly device having a cell disassembly unit (2) for disassembling the cell received from an ATM circuit interface, extracting data from the payload, distributing the data in plural time slots divided and multiplexed in time in frame period, and sending out to an STM circuit interface, the cell disassembly unit (2) comprises a fluctuation absorption buffer unit (11) provided in each time slot, and the data distributed in each time slot is once held in these buffers to absorb cell fluctuations, thereby suppressing both increase of total capacity of the memory for absorbing fluctuations and complication of memory control circuit, and reducing the cost.
    Type: Grant
    Filed: October 5, 2000
    Date of Patent: June 6, 2006
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Hirotoshi Yamada, Kentaro Tanaka
  • Patent number: 6675314
    Abstract: A source clock regenerating section (10) comprises an operating section (2) for taking a weighted average value of a plurality of buffer remaining volumes H that have been sequentially detected, multiplying a predetermined sensitivity coefficient A to this weighted average value, and further adding a predetermined offset value, thereby to obtain a control value U for regenerating the source clock; and an operation control section (5) for setting a local clock (14) to a manipulated variable to be used for calculating the control value capable of converging to the source clock at a high speed during a period from when a source clock regeneration operation has started till when the local clock (14) as a regeneration source clock satisfies a predetermined condition for coming closer to a source clock frequency, and for setting the local clock to the manipulated variable capable of stably regenerating the source clock after this predetermined condition has been satisfied.
    Type: Grant
    Filed: November 1, 2000
    Date of Patent: January 6, 2004
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Hirotoshi Yamada, Koichi Nakashima, Kentaro Tanaka
  • Publication number: 20030108037
    Abstract: A method for determining a combination of data for transfer comprises counting the number of candidates in data for candidates of a data transfer request for each row as the number of candidates at lattice points of a lattice composed of N rows×N columns, searching for a minimum value out of count values equal to or greater than 1, selecting and storing one row showing the minimum value. Regarding the candidates in the selected row, the method also comprises counting the number of candidates in each column where candidates exist, searching for a minimum value, selecting and storing one column, deleting all candidates on the row and the column determined, and repeating these processes until no more candidates exist to determine combinations of rows and columns stored at a point of time when no more candidates exist.
    Type: Application
    Filed: October 31, 2002
    Publication date: June 12, 2003
    Inventors: Shinji Furuya, Hirotoshi Yamada, Nobuyuki Kobayashi
  • Publication number: 20030023751
    Abstract: A searching method of a plurality of routes includes the steps of defining, as an X direction, one direction of a bidirectional transmission line connected to each of the plurality of nodes, and another direction as a Y direction; respecifying an initial node and a terminal node; searching a first shortest route extending from the specified initial node to the specified terminal node; searching a second shortest route for nodes connected to another transmission line in the X direction; searching a third shortest route extending from the specified initial node to the specified terminal node; searching a fourth shortest route for nodes connected to another transmission line in the Y direction; comparing the sum of the X group first route and second route with the sum of the Y group first route and second route; and determining the group having a smaller sum as an optimal route in the comparison.
    Type: Application
    Filed: May 13, 2002
    Publication date: January 30, 2003
    Inventors: Tsunehito Mouri, Osamu Nakazawa, Hiroyuki Saito, Akihito Shinozaki, Sadayo Hirata, Hirotoshi Yamada
  • Patent number: 6502235
    Abstract: The database generation unit refers to the source program, lists routes passed during the execution of the source program, and enters the route information in the route information database. As a result of executing the load module, the relevant information such as a value of a parameter used when a route is passed, and an execution state are entered in the route information database. The similar route determination unit extracts from the route information database a route path not passed, determines a similar route from passed routes, and transmits the relevant information in the input parameter generation unit. Based on the information about similar routes, the input parameter generation unit generates and outputs an input parameter required to pass a non-passed route path and a condition to be satisfied by an input parameter.
    Type: Grant
    Filed: January 10, 2000
    Date of Patent: December 31, 2002
    Assignee: Fujitsu Limited
    Inventors: Hideki Tosaka, Yoriko Yoshitomi, Hirotoshi Yamada, Ikunori Moriya, Shingo Kamuro, Tetsuro Imamura
  • Patent number: 6330692
    Abstract: A method of determining a route to be tested in the testing of a load module which includes a multiplicity of routes (route patterns) from the start to the end of the program, each route pattern being composed of a multiplicity of route paths. The method comprises the steps of: (1) testing an untested route pattern and managing the current state of the testing of all the route patterns with the untested route pattern changed to a tested route pattern; (2) managing the current state of the testing of all the route paths with the route paths constituting the untested route pattern changed to tested route paths; and (3) determining an untested route pattern which is constituted by the largest number of untested route paths to be the route pattern to be tested next. These steps are repeated until there exists no untested route path in the load module test.
    Type: Grant
    Filed: July 14, 1998
    Date of Patent: December 11, 2001
    Assignee: Fujitsu Limited
    Inventors: Shingo Kamuro, Ikunori Moriya, Ikuko Kubota, Yoriko Yoshitomi, Tetsuro Imamura, Hirotoshi Yamada, Hideki Tosaka
  • Patent number: 5619495
    Abstract: This invention provides a cell switching apparatus having buffer memories in which accesses of a plurality off cells can be implemented in one-cell time. The cell switching apparatus arranges a plurality of buffer memories, in which accesses of a plurality of cells can be performed, in parallel, and schedules a score table so that the writing and reading out operations may not overlap. Accordingly, the incoming lines may be increased lip to (the number of incoming lines n)=(the number of buffer memories p-1).times.(the number of outgoing lines m) without increasing the access speed of the buffer memories.
    Type: Grant
    Filed: August 21, 1995
    Date of Patent: April 8, 1997
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Hideaki Yamanaka, Hirotaka Saito, Munenori Tsuzuki, Yasuhito Sasaki, Hirotoshi Yamada, Kazuyoshi Oshima
  • Patent number: 5504741
    Abstract: A data queuing apparatus processes data switching and queuing using a smaller capacity memory, while reducing data discard and loss possibility. Received limited-length data at the input line is written in shift memories, which can shift the data to the next stage regardless of the destination of the data. Destination indicating bits, which indicate the destination of the data, are associated with each of shift memories. A search circuit detects an asserted bit among the destination indicating bits corresponding to the output lines. The data is extracted by a selector. Then the selector transmits the data to the desired output line, and the data stored in the previous stage of the shift memory is shifted. The memory is used in common with a plurality of output lines, so that a lower possibility of data discard and loss can be attained in a smaller capacity memory.
    Type: Grant
    Filed: February 2, 1994
    Date of Patent: April 2, 1996
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Hideaki Yamanaka, Hirotaka Saito, Munenori Tsuzuki, Hirotoshi Yamada, Harufusa Kondoh, Kazuyoshi Oshima, Hiromi Notani
  • Patent number: 5398235
    Abstract: A cell exchanging apparatus which distributes cells input through a plurality of input lines to output lines by destination for output. Without stopping the operation of the cell exchanging apparatus, active and standby cell switches of the cell exchanging apparatus can be changed over. The cell exchanging apparatus comprises a first and second cell switches, input selectors for feeding input cells only to either of the first and second cell switches, and output selectors for outputting cells output from either of the first and second cell switches to an external system. When a change-over is instructed by a system change-over signal, the input selectors start to feed input cells into the cell switch in the standby mode. When detecting completion of cell output operation from the active cell switch, the output selectors select a new active cell switch.
    Type: Grant
    Filed: February 22, 1993
    Date of Patent: March 14, 1995
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Munenori Tsuzuki, Hideaki Yamanaka, Hirotaka Saito, Hirotoshi Yamada, Kazuyoshi Oshima