Patents by Inventor Masahiko Onishi

Masahiko Onishi 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: 20220181788
    Abstract: Antenna apparatus and spacecraft to be deployed in a more easily stored state are disclosed. In an example of the disclosed technology, and antenna apparatus includes: a main-reflection unit including a plurality of ribs formed to be deployable in a stored state in which the ribs are folded and a sheet body provided between a plurality of the ribs and configured to be capable of reflecting a radio wave radiated from a radiator and emitting the radio wave outside, and a restriction member configured to restrict deployment of the plurality of ribs in the stored state, and release the restriction by operation of a restriction release member different from the main-reflection unit.
    Type: Application
    Filed: April 18, 2019
    Publication date: June 9, 2022
    Applicant: Institute for Q-shu Pioneers of Space, Inc.
    Inventors: Shunsuke ONISHI, Tetsuo YASAKA, Kazuo KUNO, Masahiko UETSUHARA, Yohei KOGA, Shinji ITO, Yonosuke ICHIKI, Kazuo KISO, Mutsuhito TOBO
  • Publication number: 20220181789
    Abstract: Antenna apparatus and spacecraft to be deployed in a more compactly stored state are disclosed. In an example of the disclosed technology, a spacecraft includes: a main-reflection unit configured to reflect and emit a radio wave outside, a sub-reflection unit configured to face the main-reflection unit, a radiator arranged to face the sub-reflection unit and configured to radiate the radio wave in a direction of the sub-reflection unit, a main body configured to be able to accommodate at least one part of the sub-reflection unit therein, and a delivery device connected to the sub-reflection unit and configured to deliver the sub-reflection unit, at least one part of which is accommodated in the main body, to a position where the sub-reflection unit is able to reflect the radio wave radiated from the radiator to the main-reflection unit and cause the main-reflection unit to radiate the radio wave outside.
    Type: Application
    Filed: April 18, 2019
    Publication date: June 9, 2022
    Applicant: Institute for Q-shu Pioneers of Space, Inc.
    Inventors: Shunsuke ONISHI, Tetsuo YASAKA, Kazuo KUNO, Masahiko UETSUHARA, Yohei KOGA, Shinji ITO, Yonosuke ICHIKI, Kazuo KISO, Mutsuhito TOBO
  • Publication number: 20220006178
    Abstract: An antenna module to be provided to a vehicle includes: an array antenna configured to form a beam directed from an aperture provided in an exterior body panel of the vehicle, toward a vehicle outside; and a housing holding the array antenna in a vehicle inside.
    Type: Application
    Filed: July 8, 2019
    Publication date: January 6, 2022
    Applicant: Sumitomo Electric Industries, Ltd.
    Inventors: Tatsuhiro SHIMURA, Isao KATSURA, Masahiko ONISHI
  • Publication number: 20210305946
    Abstract: Provided is a distortion compensation device performing distortion compensation on a signal to be amplified by an amplifier, of which an internal state affecting a distortion characteristic varies, using a distortion compensation model, wherein the distortion compensation model includes a plurality of calculation models having respective distortion compensation characteristic for the amplifier in different internal states, and a combiner combining the plurality of calculation models at a combination ratio corresponding to the internal state that varies.
    Type: Application
    Filed: March 15, 2021
    Publication date: September 30, 2021
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Masahiko ONISHI, Eiji MOCHIDA
  • Publication number: 20210303756
    Abstract: Provided is a modeling device performing calculation using an amplifier model that models an amplifier of which an internal state affecting a distortion characteristic varies, wherein the amplifier model includes a plurality of calculation models that model the amplifier in different internal states, and a combiner that combines the plurality of calculation models at a combination ratio corresponding to the internal state that varies.
    Type: Application
    Filed: March 15, 2021
    Publication date: September 30, 2021
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Masahiko ONISHI, Eiji MOCHIDA
  • Patent number: 10381516
    Abstract: A semiconductor light emitting device which includes at least one concave on a light extraction surface opposite to a surface on which a semiconductor stack comprising a light emitting layer between a n-type semiconductor layer and a p-type semiconductor layer is mounted. The concave has not less than two slopes each having a different slope angle in a direction that a diameter of the concave becomes narrower toward a bottom of the concave from an opening of the concave and a slope having a gentle slope angle is provided with irregularities and a slope having a steep slope angle is a flat surface.
    Type: Grant
    Filed: July 21, 2016
    Date of Patent: August 13, 2019
    Assignee: NICHIA CORPORATION
    Inventors: Yohei Wakai, Masahiko Onishi
  • Patent number: 10026879
    Abstract: A light emitting element includes an n-type semiconductor layer having an upper surface; a p-type semiconductor layer over a portion of the upper surface of the n-type semiconductor layer, the p-type semiconductor layer having an upper surface; a protective film continuously covering the n-type semiconductor layer and the p-type semiconductor layer, the protective film defining an n-side opening at the upper surface of the n-type semiconductor layer and a p-side opening at an upper surface of the p-type semiconductor layer; a p-side electrode on the upper surface of the p-type semiconductor layer that is exposed in the p-side opening; an n-side electrode on the upper surface of the n-type semiconductor layer that is exposed at the n-side opening, n-side electrode having an n-side light-transmissive electrode; and an n-side pad electrode on the upper surface of the n-side light-transmissive electrode.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: July 17, 2018
    Assignee: NICHIA CORPORATION
    Inventors: Masahiko Onishi, Yasuhiro Miki
  • Patent number: 9837579
    Abstract: In a method for producing a semiconductor light emitting device: a semiconductor lamination of first and second semiconductor layers having different conductive types is formed; a portion of the semiconductor lamination is removed to expose an area of a surface of the first semiconductor layer; a conductor layer connecting the first and second semiconductor layers is formed; a first electrode is formed on the exposed areas of the first semiconductor layer and a second electrode is formed on an upper surface of the second semiconductor layer; a barrier layer covering at least one of the first and second electrodes is formed; and a connection part in the conductor layer connecting the first and second semiconductor layers is removed.
    Type: Grant
    Filed: January 23, 2015
    Date of Patent: December 5, 2017
    Assignee: NICHIA CORPORATION
    Inventors: Masahiko Onishi, Shun Kitahama
  • Patent number: 9712122
    Abstract: A distortion compensation apparatus that compensates for distortion of an amplifier is provided. The distortion compensation apparatus includes: a distortion compensation processing section that performs a predistortion process for a signal provided to the amplifier, based on an amplifier model of the amplifier, and outputs a compensated signal; an estimation section that estimates the amplifier model; and a filter. The estimation section estimates the amplifier model, based on the compensated signal and a monitor signal obtained by monitoring an output of the amplifier. The monitor band of the monitor signal provided to the estimation section is narrower than a frequency band of the compensated signal. The filter is provided so as to eliminate an influence of a signal component outside the monitor band among signal components of the compensated signal, on the estimation of the amplifier model by the estimation section.
    Type: Grant
    Filed: August 22, 2013
    Date of Patent: July 18, 2017
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventor: Masahiko Onishi
  • Publication number: 20160329465
    Abstract: A semiconductor light emitting device which includes at least one concave on a light extraction surface opposite to a surface on which a semiconductor stack comprising a light emitting layer between a n-type semiconductor layer and a p-type semiconductor layer is mounted. The concave has not less than two slopes each having a different slope angle in a direction that a diameter of the concave becomes narrower toward a bottom of the concave from an opening of the concave and a slope having a gentle slope angle is provided with irregularities and a slope having a steep slope angle is a flat surface.
    Type: Application
    Filed: July 21, 2016
    Publication date: November 10, 2016
    Inventors: Yohei WAKAI, Masahiko ONISHI
  • Patent number: 9490393
    Abstract: A semiconductor light emitting device which includes at least one concave on a light extraction surface opposite to a surface on which a semiconductor stack comprising a light emitting layer between a n-type semiconductor layer and a p-type semiconductor layer is mounted. The concave has not less than two slopes each having a different slope angle in a direction that a diameter of the concave becomes narrower toward a bottom of the concave from an opening of the concave and a slope having a gentle slope angle is provided with irregularities and a slope having a steep slope angle is a flat surface.
    Type: Grant
    Filed: September 17, 2009
    Date of Patent: November 8, 2016
    Assignee: NICHIA CORPORATION
    Inventors: Yohei Wakai, Masahiko Onishi
  • Patent number: 9484868
    Abstract: Distortion is effectively reduced in a wide frequency band of an output signal from an amplifier. A distortion compensation apparatus includes: a distortion compensation processing section that performs a distortion compensation process on an input signal to the amplifier, based on a first amplifier model of the amplifier, and output a compensated signal; a signal generation section that receives the compensated signal and a first digital monitor signal, and generates a second digital monitor signal; and an estimation section that estimates the first amplifier model, based on the compensated signal and the second digital monitor signal. The first digital monitor signal is a signal generated by subjecting an analog monitor signal obtained by monitoring an output signal from the amplifier, to analog-to-digital conversion. A monitor band of the first digital monitor signal is narrower than a frequency band of the compensated signal.
    Type: Grant
    Filed: June 2, 2014
    Date of Patent: November 1, 2016
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventor: Masahiko Onishi
  • Publication number: 20160190394
    Abstract: A light emitting element includes an n-type semiconductor layer having an upper surface; a p-type semiconductor layer over a portion of the upper surface of the n-type semiconductor layer, the p-type semiconductor layer having an upper surface; a protective film continuously covering the n-type semiconductor layer and the p-type semiconductor layer, the protective film defining an n-side opening at the upper surface of the n-type semiconductor layer and a p-side opening at an upper surface of the p-type semiconductor layer; a p-side electrode on the upper surface of the p-type semiconductor layer that is exposed in the p-side opening; an n-side electrode on the upper surface of the n-type semiconductor layer that is exposed at the n-side opening, n-side electrode having an n-side light-transmissive electrode; and an n-side pad electrode on the upper surface of the n-side light-transmissive electrode.
    Type: Application
    Filed: December 28, 2015
    Publication date: June 30, 2016
    Inventors: Masahiko Onishi, Yasuhiro Miki
  • Publication number: 20160134248
    Abstract: Distortion is effectively reduced in a wide frequency band of an output signal from an amplifier. A distortion compensation apparatus includes: a distortion compensation processing section that performs a distortion compensation process on an input signal to the amplifier, based on a first amplifier model of the amplifier, and output a compensated signal; a signal generation section that receives the compensated signal and a first digital monitor signal, and generates a second digital monitor signal; and an estimation section that estimates the first amplifier model, based on the compensated signal and the second digital monitor signal. The first digital monitor signal is a signal generated by subjecting an analog monitor signal obtained by monitoring an output signal from the amplifier, to analog-to-digital conversion. A monitor band of the first digital monitor signal is narrower than a frequency band of the compensated signal.
    Type: Application
    Filed: June 2, 2014
    Publication date: May 12, 2016
    Inventor: Masahiko ONISHI
  • Patent number: 9281989
    Abstract: A compensation apparatus compensates a quadrature-demodulated signal output from a quadrature demodulator 5 that performs quadrature demodulation by using a signal of a carrier frequency fc, by removing an image component caused by the quadrature demodulator 5 from the quadrature-demodulated signal. The compensation apparatus includes a signal generator 10 that generates a reference signal having a predetermined bandwidth in a reception band, and provides the reference signal to an input side of the quadrature demodulator 5. The reference signal includes a frequency band that is biased to either a higher-frequency side or a lower-frequency side with respect to the carrier frequency.
    Type: Grant
    Filed: April 17, 2015
    Date of Patent: March 8, 2016
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Masahiko Onishi, Isao Katsura
  • Patent number: 9257943
    Abstract: Distortion compensation is performed taking into account a memory effect that occurs in a signal path other than an input-to-output path of an amplifier. An amplifier circuit 1 includes an amplifier 2 that amplifies a signal, a variable power supply 3 that varies a power supply voltage of the amplifier 2 in accordance with envelope change, and a distortion compensation section 4 that performs compensation for distortion characteristics. The distortion compensation section 4 performs the distortion compensation, based on an amplifier model which represents a memory effect that occurs on a path from a signal input port 2a of the amplifier 2 to a signal output port 2b thereof, and a memory effect that occurs on a path from a power supply port 2c of the amplifier 2 to the signal output port 2b thereof.
    Type: Grant
    Filed: November 30, 2011
    Date of Patent: February 9, 2016
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventor: Masahiko Onishi
  • Patent number: 9231634
    Abstract: A compensation apparatus is provided which performs a compensation process of removing an image component in a quadrature-demodulated signal. The compensation apparatus includes a quadrature demodulation compensation section that compensates for the quadrature-demodulated signal including an I signal and a Q signal. The quadrature demodulation compensation section is configured to perform a compensation process of compensating for a characteristic difference between the frequency characteristic of a first filter that performs filtering of the I signal and the frequency characteristic of a second filter that performs filtering of the Q signal.
    Type: Grant
    Filed: August 22, 2013
    Date of Patent: January 5, 2016
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventor: Masahiko Onishi
  • Patent number: 9197263
    Abstract: A compensation apparatus compensates a quadrature-demodulated signal output from a quadrature demodulator 5 that performs quadrature demodulation by using a signal of a carrier frequency fc, by removing an image component caused by the quadrature demodulator 5 from the quadrature-demodulated signal. The compensation apparatus includes a signal generator 10 that generates a reference signal having a predetermined bandwidth in a reception band, and provides the reference signal to an input side of the quadrature demodulator 5. The reference signal includes a frequency band that is biased to either a higher-frequency side or a lower-frequency side with respect to the carrier frequency.
    Type: Grant
    Filed: July 24, 2012
    Date of Patent: November 24, 2015
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Masahiko Onishi, Isao Katsura
  • Publication number: 20150295545
    Abstract: A distortion compensation apparatus that compensates for distortion of an amplifier is provided. The distortion compensation apparatus includes: a distortion compensation processing section that performs a predistortion process for a signal provided to the amplifier, based on an amplifier model of the amplifier, and outputs a compensated signal; an estimation section that estimates the amplifier model; and a filter. The estimation section estimates the amplifier model, based on the compensated signal and a monitor signal obtained by monitoring an output of the amplifier. The monitor band of the monitor signal provided to the estimation section is narrower than a frequency band of the compensated signal. The filter is provided so as to eliminate an influence of a signal component outside the monitor band among signal components of the compensated signal, on the estimation of the amplifier model by the estimation section.
    Type: Application
    Filed: August 22, 2013
    Publication date: October 15, 2015
    Inventor: Masahiko Onishi
  • Publication number: 20150222309
    Abstract: A compensation apparatus is provided which performs a compensation process of removing an image component in a quadrature-demodulated signal. The compensation apparatus includes a quadrature demodulation compensation section that compensates for the quadrature-demodulated signal including an I signal and a Q signal. The quadrature demodulation compensation section is configured to perform a compensation process of compensating for a characteristic difference between the frequency characteristic of a first filter that performs filtering of the I signal and the frequency characteristic of a second filter that performs filtering of the Q signal.
    Type: Application
    Filed: August 22, 2013
    Publication date: August 6, 2015
    Inventor: Masahiko Onishi