Patents by Inventor Takaharu Nakamura

Takaharu Nakamura 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: 20240120870
    Abstract: An abnormality diagnosis device includes: a feature quantity calculation unit which calculates a plurality of feature quantities from the time-series data of the current values; an operation mode determination unit which determines an operation mode of a compressor on the basis of the load torque and the drive frequency; a feature quantity distribution generation unit which generates a feature quantity distribution from values of the plurality of feature quantities; a reference region generation unit which generates a reference region on the basis of the feature quantity distribution that is obtained in a normal case; and a determination unit which compares the feature quantity distribution that is obtained during an abnormality diagnosis and the reference region corresponding to the operation mode that is applied during the abnormality diagnosis, to determine whether an abnormality is present or absent in either of the compressor and the electric motor.
    Type: Application
    Filed: April 8, 2021
    Publication date: April 11, 2024
    Applicant: Mitsubishi Electric Corporation
    Inventors: Hiroshi INOUE, Ken HIRAKIDA, Makoto KANEMARU, Takaharu NAKAMURA
  • Patent number: 11619224
    Abstract: Provided is a degradation diagnostic device, which is configured to perform a diagnosis for degradation of a compressor including a compression mechanism unit to be driven along with a rotational motion of a rotary shaft, and a shell, which is configured to form an outer casing. The degradation diagnostic device includes a vibration detection device to be fixed onto an outer wall of the shell at a position at which the compression mechanism unit is located. The vibration detection device includes: a vibration sensor, which is configured to detect vibration of the compressor; a sensor holding unit including the vibration sensor; a base portion to which the sensor holding unit is connected; and a plurality of projecting portions, which are formed on a surface of the base portion on a side opposite to the sensor holding unit and to be brought into contact with the outer wall.
    Type: Grant
    Filed: October 31, 2016
    Date of Patent: April 4, 2023
    Assignee: Mitsubishi Electric Corporation
    Inventor: Takaharu Nakamura
  • Publication number: 20200049364
    Abstract: A degradation diagnosis device that diagnoses whether or not a compressor is abnormal includes a current detector configured to detect electric current and output electric-current information being information of a power current supplied to the compressor; a vibration detector configured to detect vibration of the compressor and output vibration information being information of the vibration of the compressor every set measurement period; an arithmetic unit connected with the current detector and the vibration detector and configured to diagnose whether or not the compressor is abnormal using the electric-current information inputted by the current detector and the vibration information inputted by the vibration detector; and a notification unit configured to give notification about a result of diagnosis as to whether or not the compressor is abnormal.
    Type: Application
    Filed: April 26, 2017
    Publication date: February 13, 2020
    Inventors: Takaharu NAKAMURA, Nobuaki TANAKA
  • Publication number: 20190242375
    Abstract: Provided is a degradation diagnostic device, which is configured to perform a diagnosis for degradation of a compressor including a compression mechanism unit to be driven along with a rotational motion of a rotary shaft, and a shell, which is configured to form an outer casing. The degradation diagnostic device includes a vibration detection device to be fixed onto an outer wall of the shell at a position at which the compression mechanism unit is located. The vibration detection device includes: a vibration sensor, which is configured to detect vibration of the compressor; a sensor holding unit including the vibration sensor; a base portion to which the sensor holding unit is connected; and a plurality of projecting portions, which are formed on a surface of the base portion on a side opposite to the sensor holding unit and to be brought into contact with the outer wall.
    Type: Application
    Filed: October 31, 2016
    Publication date: August 8, 2019
    Inventor: Takaharu NAKAMURA
  • Patent number: 9629164
    Abstract: A radio communication system including: a first and second base station apparatuses which include one or more of sells or sectors respectively; and a terminal apparatus, wherein the first and second base station apparatuses and the terminal apparatus performs radio communication, the first and second base station apparatuses includes: a process unit which performs a scrambling process to a first and second transmission data respectively by using a common scrambling code when the first and second transmission data differing each of the cells or the sectors are transmitted to the terminal apparatus; and a transmission unit which transmits the scrambling processed first and second transmission data to the terminal apparatus respectively, and the terminal apparatus includes a reception unit which receives the first and the second transmission data and performs descrambling process to the first and the second transmission data by using the common scrambling code.
    Type: Grant
    Filed: July 23, 2015
    Date of Patent: April 18, 2017
    Assignee: FUJITSU LIMITED
    Inventors: Takayoshi Ode, Takaharu Nakamura
  • Patent number: 9215714
    Abstract: A radio communication system including: a first and second base station apparatuses which include one or more of sells or sectors respectively; and a terminal apparatus, wherein the first and second base station apparatuses and the terminal apparatus performs radio communication, the first and second base station apparatuses includes: a process unit which performs a scrambling process to a first and second transmission data respectively by using a common scrambling code when the first and second transmission data differing each of the cells or the sectors are transmitted to the terminal apparatus; and a transmission unit which transmits the scrambling processed first and second transmission data to the terminal apparatus respectively, and the terminal apparatus includes a reception unit which receives the first and the second transmission data and performs descrambling process to the first and the second transmission data by using the common scrambling code.
    Type: Grant
    Filed: August 27, 2013
    Date of Patent: December 15, 2015
    Assignee: FUJITSU LIMITED
    Inventors: Takayoshi Ode, Takaharu Nakamura
  • Publication number: 20150326413
    Abstract: A radio communication system including: a first and second base station apparatuses which include one or more of sells or sectors respectively; and a terminal apparatus, wherein the first and second base station apparatuses and the terminal apparatus performs radio communication, the first and second base station apparatuses includes: a process unit which performs a scrambling process to a first and second transmission data respectively by using a common scrambling code when the first and second transmission data differing each of the cells or the sectors are transmitted to the terminal apparatus; and a transmission unit which transmits the scrambling processed first and second transmission data to the terminal apparatus respectively, and the terminal apparatus includes a reception unit which receives the first and the second transmission data and performs descrambling process to the first and the second transmission data by using the common scrambling code.
    Type: Application
    Filed: July 23, 2015
    Publication date: November 12, 2015
    Inventors: Takayoshi ODE, Takaharu NAKAMURA
  • Patent number: 8711827
    Abstract: A mobile terminal having a receive diversity function using a plurality of receive antennas, having a calculation section which combines respective level measurement results of the receive antennas and calculates a level measurement value after being combined as the level measurement result of the mobile terminal.
    Type: Grant
    Filed: November 28, 2007
    Date of Patent: April 29, 2014
    Assignee: Fujitsu Limited
    Inventors: Syuuichi Murata, Takaharu Nakamura
  • Publication number: 20140016565
    Abstract: A communication system includes a terminal apparatus; and primary and secondary base station apparatuses each providing one or more cells. Further, the primary base station apparatus includes a transmission unit transmitting communication conditions to the secondary base station apparatus in a coordinated communication mode where the primary and secondary base station apparatuses perform radio communications with the terminal apparatus in coordination with each other, and a radio communication unit performing radio communications with the terminal apparatus using the communication conditions in the coordinated communication mode.
    Type: Application
    Filed: September 18, 2013
    Publication date: January 16, 2014
    Applicant: FUJITSU LIMITED
    Inventors: Takayoshi ODE, Takaharu NAKAMURA
  • Patent number: 8619725
    Abstract: A radio communication system including: a first and second base station apparatuses which include one or more of sells or sectors respectively; and a terminal apparatus, wherein the first and second base station apparatuses and the terminal apparatus performs radio communication, the first and second base station apparatuses includes: a process unit which performs a scrambling process to a first and second transmission data respectively by using a common scrambling code when the first and second transmission data differing each of the cells or the sectors are transmitted to the terminal apparatus; and a transmission unit which transmits the scrambling processed first and second transmission data to the terminal apparatus respectively, and the terminal apparatus includes a reception unit which receives the first and the second transmission data and performs descrambling process to the first and the second transmission data by using the common scrambling code.
    Type: Grant
    Filed: November 23, 2011
    Date of Patent: December 31, 2013
    Assignee: Fujitsu Limited
    Inventors: Takayoshi Ode, Takaharu Nakamura
  • Publication number: 20130343331
    Abstract: A radio communication system including: a first and second base station apparatuses which include one or more of sells or sectors respectively; and a terminal apparatus, wherein the first and second base station apparatuses and the terminal apparatus performs radio communication, the first and second base station apparatuses includes: a process unit which performs a scrambling process to a first and second transmission data respectively by using a common scrambling code when the first and second transmission data differing each of the cells or the sectors are transmitted to the terminal apparatus; and a transmission unit which transmits the scrambling processed first and second transmission data to the terminal apparatus respectively, and the terminal apparatus includes a reception unit which receives the first and the second transmission data and performs descrambling process to the first and the second transmission data by using the common scrambling code.
    Type: Application
    Filed: August 27, 2013
    Publication date: December 26, 2013
    Applicant: Fujitsu Limited
    Inventors: Takayoshi Ode, Takaharu Nakamura
  • Patent number: 8588187
    Abstract: A communications system includes a first reception device and a transmission device. The transmission device includes a modulator operable to modulate a plurality of subcarriers using a signal series obtained by multiplexing a first signal series to be transmitted to the first reception device and a second signal series to be transmitted to a plurality of reception devices including the first reception device in a communications area of the transmission device and a transmitter operable to transmit the modulation signals. The first reception device includes a demodulator operable to regenerate the first signal series and the second signal series.
    Type: Grant
    Filed: April 5, 2007
    Date of Patent: November 19, 2013
    Assignee: Fujitsu Limited
    Inventor: Takaharu Nakamura
  • Patent number: 8548486
    Abstract: A radio communication system including: a base station; a terminal; and a relay station, wherein the base station and the terminal perform radio communication via the relay station, the base station includes: a change unit which changes at least any of a radio resource allocation method for the relay station and the terminal, the radio resource allocation method and a scheduling method, or the radio resource allocation method, the scheduling method and a relay method in the relay station; and a transmission unit which transmits a change notice for notifying the relay station of the change by the change unit, the relay station includes a reception unit which receives the change notice, and the base station, the relay station, and the terminal perform radio communication using at least the radio resources allocating or allocated by the radio resource allocation method after the change.
    Type: Grant
    Filed: December 28, 2011
    Date of Patent: October 1, 2013
    Assignee: Fujitsu Limited
    Inventors: Takayoshi Ode, Takaharu Nakamura
  • Publication number: 20120099730
    Abstract: A radio communication system, including: a first and second base station apparatuses which includes one or plurality of cells or sectors, respectively; and a terminal apparatus, wherein each of the first and second base station apparatuses includes: a processing unit which executes scrambling processing on a first and second transmission data that are different from each other for each cell or sector by using a first and second scrambling codes having a predetermined phase difference respectively, when the first and second transmission data are to be transmitted to the terminal apparatus respectively; and a transmission unit which transmits the first and second transmission data processed by the scrambling processing to the terminal apparatus respectively, and the terminal apparatus includes a reception unit which executes descrambling processing on the first and second transmission data by using the first and second scrambling codes respectively.
    Type: Application
    Filed: December 28, 2011
    Publication date: April 26, 2012
    Applicant: FUJITSU LIMITED
    Inventors: Takaharu Nakamura, Takayoshi Ode
  • Publication number: 20120094682
    Abstract: A radio communication system including: a base station; a terminal; and a relay station, wherein the base station and the terminal perform radio communication via the relay station, the base station includes: a change unit which changes at least any of a radio resource allocation method for the relay station and the terminal, the radio resource allocation method and a scheduling method, or the radio resource allocation method, the scheduling method and a relay method in the relay station; and a transmission unit which transmits a change notice for notifying the relay station of the change by the change unit, the relay station includes a reception unit which receives the change notice, and the base station, the relay station, and the terminal perform radio communication using at least the radio resources allocating or allocated by the radio resource allocation method after the change.
    Type: Application
    Filed: December 28, 2011
    Publication date: April 19, 2012
    Applicant: FUJITSU LIMITED
    Inventors: Takayoshi Ode, Takaharu Nakamura
  • Publication number: 20120069825
    Abstract: A radio communication system including: a first and second base station apparatuses which include one or more of sells or sectors respectively; and a terminal apparatus, wherein the first and second base station apparatuses and the terminal apparatus performs radio communication, the first and second base station apparatuses includes: a process unit which performs a scrambling process to a first and second transmission data respectively by using a common scrambling code when the first and second transmission data differing each of the cells or the sectors are transmitted to the terminal apparatus; and a transmission unit which transmits the scrambling processed first and second transmission data to the terminal apparatus respectively, and the terminal apparatus includes a reception unit which receives the first and the second transmission data and performs descrambling process to the first and the second transmission data by using the common scrambling code.
    Type: Application
    Filed: November 23, 2011
    Publication date: March 22, 2012
    Applicant: FUJITSU LIMITED
    Inventors: Takayoshi Ode, Takaharu Nakamura
  • Publication number: 20110142148
    Abstract: A communications system includes a first reception device and a transmission device. The transmission device includes a modulator operable to modulate a plurality of subcarriers using a signal series obtained by multiplexing a first signal series to be transmitted to the first reception device and a second signal series to be transmitted to a plurality of reception devices including the first reception device in a communications area of the transmission device and a transmitter operable to transmit the modulation signals. The first reception device includes a demodulator operable to regenerate the first signal series and the second signal series.
    Type: Application
    Filed: December 14, 2010
    Publication date: June 16, 2011
    Applicant: FUJITSU LIMITED
    Inventor: Takaharu NAKAMURA
  • Patent number: 7843804
    Abstract: A transmission method includes transmitting a signal using an orthogonal frequency division multiplexing, receiving the transmitted signal at a plurality of reception devices, and controlling a transmission power for first signals transmitted to the plurality of reception devices in an area formed by the transmitter to be greater than a transmission power for second signals transmitted to a specific device in the area, wherein said first signals and said second signals are time division multiplexed.
    Type: Grant
    Filed: April 5, 2007
    Date of Patent: November 30, 2010
    Assignee: Fujitsu Limited
    Inventor: Takaharu Nakamura
  • Patent number: 7776691
    Abstract: The object is simplification of a manufacturing process for nonvolatile memory by reducing additional processes for forming a charge storage structure, and downsizing of nonvolatile memory.
    Type: Grant
    Filed: October 17, 2008
    Date of Patent: August 17, 2010
    Assignee: Oki Semiconductor Co., Ltd.
    Inventors: Takaharu Nakamura, Tetsuhiro Maruyama, Masao Tsujimoto, Ikuo Kurachi
  • Patent number: 7533306
    Abstract: In an apparatus such as a turbo decoding apparatus in which it is necessary to carry out interleave operation and deinterleave operation, there are provided a memory unit (5) and a memory control unit (12) capable of changing data writing order and data reading order with respect to the memory unit (5) depending on whether data is to be interleaved or deinterleaved. With this arrangement, the single unit of memory (5) can function as an interleaver and a deinterleaver, thereby reducing the size and cost the device.
    Type: Grant
    Filed: December 7, 2005
    Date of Patent: May 12, 2009
    Assignee: Fujitsu Limited
    Inventors: Kazuhisa Obuchi, Tetsuya Yano, Kazuo Kawabata, Takaharu Nakamura