Patents by Inventor Masanobu Yukumatsu

Masanobu Yukumatsu 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: 10830870
    Abstract: An axial displacement judgment device has a first detector acquiring a first detection value from a G sensor which detects an acceleration applied to a radar device, a second detector acquiring a second detection value from a YG sensor which detects the acceleration applied to a vehicle body, and a difference calculator calculating a detection difference value, which is a difference between the first detection value and the second detection value, every first period. The device further has an average difference value calculator calculating an average difference value as an average value of the detection difference values calculated during an acquisition period including the first periods, a deviation calculator calculating a difference standard deviation of the detection difference values calculated during the acquisition period, and a judgment section detecting occurrence of an axial displacement of the radar device based on the average difference value and the difference standard deviation.
    Type: Grant
    Filed: November 13, 2014
    Date of Patent: November 10, 2020
    Assignee: DENSO CORPORATION
    Inventors: Kenji Goto, Masanobu Yukumatsu, Takamasa Ando, Nobuyuki Terada
  • Patent number: 10295654
    Abstract: A determination unit that determines a positional change of a radar apparatus mounted on a vehicle including a vehicle body is provided with a reference member, a displacement sensor and displacement determining means. The reference member is fixed to the vehicle body and disposed such that at least a part of the reference member is adjacent to the radar apparatus. The displacement sensor detects a displacement of the radar apparatus with respect to the reference member. The determining means determines whether or not a position of the radar apparatus has changed with respect to the vehicle body, based on the displacement detected by the displacement sensor.
    Type: Grant
    Filed: October 22, 2014
    Date of Patent: May 21, 2019
    Assignee: DENSO CORPORATION
    Inventors: Masanobu Yukumatsu, Kenji Goto, Takamasa Ando
  • Patent number: 10050348
    Abstract: An antenna device 1 has a dielectric substrate 2, a patch antenna 5 and electric power absorbing passive elements 21, 24 formed on a surface of the dielectric substrate. Each electric power absorbing passive element 21, 24 is formed between the patch antenna 5 and an edge portion in a polarized wave direction of the dielectric substrate 2. The electric power absorbing passive elements 21, 24 absorb a part of electric power received by the patch antenna 5. This makes it possible to suppress a surface current flowing to the edge portions of the dielectric substrate on a conductive plate (a front-surface conductor plate 3 or a back surface conductor plate 4) on the dielectric substrate.
    Type: Grant
    Filed: December 11, 2013
    Date of Patent: August 14, 2018
    Assignee: DENSO CORPORATION
    Inventors: Kazushi Kawaguchi, Yuji Sugimoto, Masanobu Yukumatsu, Asahi Kondo
  • Patent number: 10001556
    Abstract: An FMCW (frequency modulated continuous wave) radar apparatus is provided. The apparatus transmits a transmission signal that includes a first frequency-rise time period whose frequency sequentially rises with a first modulated gradient, a first frequency-fall time period whose frequency sequentially falls with the first modulated gradient, a second frequency-rise time period whose frequency sequentially rises with a second modulated gradient different from the first modulated gradient, and a second frequency-fall time period whose frequency sequentially falls with the second modulated gradient. In the apparatus, frequencies of a plurality of peaks are specified in respect of each of beat signals obtained in response to the transmission.
    Type: Grant
    Filed: December 13, 2013
    Date of Patent: June 19, 2018
    Assignee: DENSO CORPORATION
    Inventor: Masanobu Yukumatsu
  • Patent number: 9797991
    Abstract: In a FMCW radar device, a transmission unit transmits a transmission signal that has a rising portion in which the frequency successively increases and a falling portion in which the frequency successively decreases. A reception unit receives a reception signal resulting from the transmission signal being reflected by a target and outputs a beat signal based on the transmission signal and the reception signal. A control unit determines whether or not three or more targets that have the same relative speed are present at the same orientation among a plurality of targets extracted from a plurality of peak frequencies in each of the rising portion and the falling portion of the beat signal, and when determined that three or more targets are present, gives notification that oscillation has occurred in a power supply bias circuit that supplies power supply voltage to the transmission unit or the reception unit.
    Type: Grant
    Filed: November 12, 2013
    Date of Patent: October 24, 2017
    Assignee: DENSO CORPORATION
    Inventor: Masanobu Yukumatsu
  • Patent number: 9797992
    Abstract: In a frequency modulated continuous wave (FMCW) radar apparatus, a transmitting section transmits a transmission signal and a receiving section outputs a beat signal. During this output period, a frequency-intensity property of a bias power supply voltage supplied from a power supply bias circuit is obtained. On the basis of determining whether or not the obtained frequency-intensity property satisfies a predetermined oscillation condition, it is checked whether or not there occurs oscillation in the power supply bias circuit.
    Type: Grant
    Filed: December 17, 2013
    Date of Patent: October 24, 2017
    Assignee: DENSO CORPORATION
    Inventor: Masanobu Yukumatsu
  • Patent number: 9692132
    Abstract: An antenna apparatus includes a dielectric substrate, a ground plate, a patch antenna provided with a patch radiating element, and a plurality of EBGs (Electromagnetic Band Gaps). The EBGs are composed of patch-shaped patterns formed on a surface of the substrate and connecting conductors electrically connecting the patch-shaped patterns and the ground plate. Each EBG is arranged to provide an EBG absent region having no EBG on the surface of the substrate. The patch radiating element is arranged within the EBG absent region. The EBG absent region is formed such that distances (absent distances) in a dominant polarized wave direction changes into a plurality of types depending on the position on a vertical patch line, where the distances range, to the boundary of the region, from an arbitrary position on the virtual patch line which is perpendicular to the dominant polarized wave direction of the patch antenna.
    Type: Grant
    Filed: March 12, 2014
    Date of Patent: June 27, 2017
    Assignee: DENSO CORPORATION
    Inventors: Kazushi Kawaguchi, Yuji Sugimoto, Asahi Kondo, Masanobu Yukumatsu
  • Publication number: 20160291132
    Abstract: An axial displacement judgment device has a first detector acquiring a first detection value from a G sensor which detects an acceleration applied to a radar device, a second detector acquiring a second detection value from a YG sensor which detects the acceleration applied to a vehicle body, and a difference calculator calculating a detection difference value, which is a difference between the first detection value and the second detection value, every first period. The device further has an average difference value calculator calculating an average difference value as an average value of the detection difference values calculated during an acquisition period including the first periods, a deviation calculator calculating a difference standard deviation of the detection difference values calculated during the acquisition period, and a judgment section detecting occurrence of an axial displacement of the radar device based on the average difference value and the difference standard deviation.
    Type: Application
    Filed: November 13, 2014
    Publication date: October 6, 2016
    Inventors: Kenji Goto, Masanobu Yukumatsu, Takamasa Ando, Nobuyuki Terada
  • Publication number: 20160266241
    Abstract: A determination unit that determines a positional change of a radar apparatus mounted on a vehicle including a vehicle body is provided with a reference member, a displacement sensor and displacement determining means. The reference member is fixed to the vehicle body and disposed such that at least a part of the reference member is adjacent to the radar apparatus. The displacement sensor detects a displacement of the radar apparatus with respect to the reference member. The determining means determines whether or not a position of the radar apparatus has changed with respect to the vehicle body, based on the displacement detected by the displacement sensor.
    Type: Application
    Filed: October 22, 2014
    Publication date: September 15, 2016
    Inventors: Masanobu YUKUMATSU, Kenji GOTO, Takamasa ANDO
  • Patent number: 9445535
    Abstract: A high-frequency module includes a substrate, an integrated circuit mounted to the substrate, a cylindrical shield enclosing the integrated circuit to block radio waves, a casing provided on an opposite side of the substrate relative to the shield to block radio waves, and a choke portion provided in an inner wall of the casing, the inner wall being opposed to the shield, or provided in the substrate, with a predetermined gap being formed relative to the shield, to create an antiphase in radio waves having a predetermined frequency emitted from the integrated circuit into a space above the substrate.
    Type: Grant
    Filed: November 5, 2013
    Date of Patent: September 13, 2016
    Assignee: DENSO CORPORATION
    Inventors: Takuya Kouya, Masanobu Yukumatsu, Asahi Kondo
  • Publication number: 20160028161
    Abstract: An antenna apparatus includes a dielectric substrate, a ground plate, a patch antenna provided with a patch radiating element, and a plurality of EBGs (Electromagnetic Band Gaps). The EBGs are composed of patch-shaped patterns formed on a surface of the substrate and connecting conductors electrically connecting the patch-shaped patterns and the ground plate. Each EBG is arranged to provide an EBG absent region having no EBG on the surface of the substrate. The patch radiating element is arranged within the EBG absent region. The EBG absent region is formed such that distances (absent distances) in a dominant polarized wave direction changes into a plurality of types depending on the position on a vertical patch line, where the distances range, to the boundary of the region, from an arbitrary position on the virtual patch line which is perpendicular to the dominant polarized wave direction of the patch antenna.
    Type: Application
    Filed: March 12, 2014
    Publication date: January 28, 2016
    Inventors: Kazushi Kawaguchi, Yuji Sugimoto, Asahi Kondo, Masanobu Yukumatsu
  • Publication number: 20160013557
    Abstract: An antenna device 1 has a dielectric substrate 2, a patch antenna 5 and electric power absorbing passive elements 21, 24 formed on a surface of the dielectric substrate. Each electric power absorbing passive element 21, 24 is formed between the patch antenna 5 and an edge portion in a polarized wave direction of the dielectric substrate 2. The electric power absorbing passive elements 21, 24 absorb a part of electric power received by the patch antenna 5. This makes it possible to suppress a surface current flowing to the edge portions of the dielectric substrate on a conductive plate (a front-surface conductor plate 3 or a back surface conductor plate 4) on the dielectric substrate.
    Type: Application
    Filed: December 11, 2013
    Publication date: January 14, 2016
    Inventors: Kazushi Kawaguchi, Yuji Sugimoto, Masanobu Yukumatsu, Asahi Kondo
  • Publication number: 20150355321
    Abstract: An FMCW (frequency modulated continuous wave) radar apparatus is provided. The apparatus transmits a transmission signal that includes a first frequency-rise time period whose frequency sequentially rises with a first modulated gradient, a first frequency-fall time period whose frequency sequentially falls with the first modulated gradient, a second frequency-rise time period whose frequency sequentially rises with a second modulated gradient different from the first modulated gradient, and a second frequency-fall time period whose frequency sequentially falls with the second modulated gradient. In the apparatus, frequencies of a plurality of peaks are specified in respect of each of beat signals obtained in response to the transmission.
    Type: Application
    Filed: December 13, 2013
    Publication date: December 10, 2015
    Inventor: Masanobu Yukumatsu
  • Publication number: 20150338506
    Abstract: In a FMCW radar device, a transmission unit transmits a transmission signal that has a rising portion in which the frequency successively increases and a falling portion in which the frequency successively decreases. A reception unit receives a reception signal resulting from the transmission signal being reflected by a target and outputs a beat signal based on the transmission signal and the reception signal. A control unit determines whether or not three or more targets that have the same relative speed are present at the same orientation among a plurality of targets extracted from a plurality of peak frequencies in each of the rising portion and the falling portion of the beat signal, and when determined that three or more targets are present, gives notification that oscillation has occurred in a power supply bias circuit that supplies power supply voltage to the transmission unit or the reception unit.
    Type: Application
    Filed: November 12, 2013
    Publication date: November 26, 2015
    Inventor: Masanobu YUKUMATSU
  • Publication number: 20150331089
    Abstract: In a frequency modulated continuous wave (FMCW) radar apparatus, a transmitting section transmits a transmission signal and a receiving section outputs a beat signal. During this output period, a frequency-intensity property of a bias power supply voltage supplied from a power supply bias circuit is obtained. On the basis of determining whether or not the obtained frequency-intensity property satisfies a predetermined oscillation condition, it is checked whether or not there occurs oscillation in the power supply bias circuit.
    Type: Application
    Filed: December 17, 2013
    Publication date: November 19, 2015
    Inventor: Masanobu YUKUMATSU
  • Publication number: 20150289419
    Abstract: A high-frequency module includes a substrate, an integrated circuit mounted to the substrate, a cylindrical shield enclosing the integrated circuit to block radio waves, a casing provided on an opposite side of the substrate relative to the shield to block radio waves, and a choke portion provided in an inner wall of the casing, the inner wall being opposed to the shield, or provided in the substrate, with a predetermined gap being formed relative to the shield, to create an antiphase in radio waves having a predetermined frequency emitted from the integrated circuit into a space above the substrate.
    Type: Application
    Filed: November 5, 2013
    Publication date: October 8, 2015
    Applicant: DENSO CORPORATION
    Inventors: Takuya Kouya, Masanobu Yukumatsu, Asahi Kondo
  • Publication number: 20150268336
    Abstract: An antenna apparatus includes a substrate, a first antenna, and a second antenna. The substrate includes two or more pattern-forming layers which are layered via at least one insulating layer. The two or more pattern-forming layers include a first pattern-forming layer and a second pattern-forming layer which are different from each other. The first pattern-forming layer forms one of both outer layers located at both surfaces of the substrate. The first antenna is formed on the first pattern-forming layer, includes a plurality of antenna elements arrayed in a row, and radiates electromagnetic waves in a layer direction of the plurality of layers. The second antenna is formed on the second pattern-forming layer, is arranged on at least one side of both sides of the antenna array direction of the plurality of antenna elements of the first antenna section, and radiates electromagnetic waves in the antenna array direction.
    Type: Application
    Filed: June 4, 2015
    Publication date: September 24, 2015
    Inventors: Masanobu YUKUMATSU, Asahi KONDOU, Yasuyuki MIYAKE
  • Publication number: 20120194377
    Abstract: An antenna apparatus includes a substrate, a first antenna, and a second antenna. The substrate includes two or more pattern-forming layers which are layered via at least one insulating layer. The two or more pattern-forming layers include a first pattern-forming layer and a second pattern-forming layer which are different from each other. The first pattern-forming layer forms one of both outer layers located at both surfaces of the substrate. The first antenna is formed on the first pattern-forming layer, includes a plurality of antenna elements arrayed in a row, and radiates electromagnetic waves in a layer direction of the plurality of layers. The second antenna is formed on the second pattern-forming layer, is arranged on at least one side of both sides of the antenna array direction of the plurality of antenna elements of the first antenna section, and radiates electromagnetic waves in the antenna array direction.
    Type: Application
    Filed: January 30, 2012
    Publication date: August 2, 2012
    Applicant: DENSO CORPORATION
    Inventors: Masanobu Yukumatsu, Asahi Kondou, Yasuyuki Miyake
  • Patent number: 6097331
    Abstract: An FM-CW radar apparatus is provided which may be employed in automotive anti-collision or radar cruise control systems. The radar apparatus transmits as a radar wave a high-frequency signal which is so modulated in frequency with a modulating signal as to vary with time in the form of a triangular wave and mixes a received signal with a local signal that is part of the transmitted signal to produce a beat signal consisting of a fundamental frequency component as a function of the distance to and relative speed of a target object. The radar apparatus also includes an amplitude modulator which modulates the amplitude of at least one of the transmitted signal, the received signal, and the local signal in accordance with the modulating signal so that the modulation index falls within a range of zero (0) to one (1). This allows harmonic components with an improved SN ratio to be extracted from the beat signal which may be used in calculating the fundamental frequency component of the beat signal.
    Type: Grant
    Filed: April 1, 1999
    Date of Patent: August 1, 2000
    Assignee: Denso Corporation
    Inventors: Kazuoki Matsugatani, Masanobu Yukumatsu
  • Patent number: 6040796
    Abstract: A modulation signal generating section produces a modulation signal for controlling an oscillation frequency of a voltage-controlled oscillator. The modulation signal generating section comprises a triangular wave oscillator producing a linear modulation component of a triangular waveform which varies the modulation frequency linearly, a sine wave oscillator producing a cyclic modulation component of a sine waveform which varies the modulation frequency cyclically, and a signal adder producing the modulation signal by adding the linear modulation component and the cyclic modulation component. A transmitting signal frequency modulated by the modulation signal is mixed with a received signal and produces a beat signal comprising a fundamental wave component of a beat frequency and harmonic components.
    Type: Grant
    Filed: March 17, 1998
    Date of Patent: March 21, 2000
    Assignee: Denso Corporation
    Inventors: Kazuoki Matsugatani, Masanobu Yukumatsu