Patents by Inventor Toshiro Okubo

Toshiro Okubo 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: 20200118782
    Abstract: According to one embodiment, a klystron includes an electron gun unit, a plurality of resonant cavities, a collector, and a plurality of drift tubes. The resonant cavities include an input cavity, a plurality of intermediate cavities, and an output cavity, positioned sequentially along the traveling direction of electrons from the electron gun unit. The intermediate cavities include a plurality of second harmonic cavities. The collector captures the electrons that have passed through the resonant cavities. The drift tubes are provided between the electron gun unit and the input cavity, between the resonant cavities, and between the output cavity and the collector.
    Type: Application
    Filed: December 13, 2019
    Publication date: April 16, 2020
    Applicant: CANON ELECTRON TUBES & DEVICES CO., LTD.
    Inventors: Toshiro ANNO, Yoshihisa OKUBO
  • Patent number: 10269726
    Abstract: Disclosed herein is an electronic circuit package includes a substrate having a power supply pattern, a first electronic component mounted on a first region of a front surface of the substrate, a mold resin that covers the front surface of the substrate so as to embed the first electronic component therein, and a laminated film covering an upper surface of the mold resin, the laminated film including a magnetic film and a first metal film. The first metal film is connected to the power supply pattern. The magnetic film is selectively thick on the first region.
    Type: Grant
    Filed: July 5, 2017
    Date of Patent: April 23, 2019
    Assignee: TDK CORPORATION
    Inventors: Kenichi Kawabata, Toshio Hayakawa, Toshiro Okubo
  • Patent number: 10170431
    Abstract: Disclosed herein is an electronic circuit package includes a substrate having a power supply pattern, a first electronic component mounted on a first region of a front surface of the substrate, a mold resin that covers the front surface of the substrate so as to embed the first electronic component therein and has a concave portion above the first region, a magnetic film selectively provided in the concave portion, and a first metal film that is connected to the power supply pattern and covers the mold resin.
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: January 1, 2019
    Assignee: TDK CORPORATION
    Inventors: Kenichi Kawabata, Toshio Hayakawa, Toshiro Okubo
  • Patent number: 9966343
    Abstract: Disclosed herein is an electronic circuit package includes: a substrate having a power supply pattern; an electronic component mounted on a surface of the substrate; a mold resin covering the surface of the substrate so as to embed therein the electronic component; a magnetic film formed of a composite magnetic material obtained by dispersing magnetic fillers in a thermosetting resin material, the magnetic film covering upper and side surfaces of the molding resin and an edge portion of the front surface exposed to a side surface of the substrate; and a metal film connected to the power supply pattern and covering the molding resin through the magnetic film.
    Type: Grant
    Filed: March 21, 2017
    Date of Patent: May 8, 2018
    Assignee: TDK CORPORATION
    Inventors: Kenichi Kawabata, Toshio Hayakawa, Toshiro Okubo
  • Patent number: 9953932
    Abstract: Disclosed herein is an electronic circuit package includes: a substrate having a power supply pattern; an electronic component mounted on a surface of the substrate; a mold resin covering the surface of the substrate so as to embed therein the electronic component; a laminated structure of a magnetic film and a metal film, the laminated structure covering at least an upper surface of the molding resin. The metal film is connected to the power supply pattern, and a resistance value at an interface between the magnetic film and the metal film is equal to or larger than 106?.
    Type: Grant
    Filed: March 21, 2017
    Date of Patent: April 24, 2018
    Assignee: TDK CORPORATION
    Inventors: Kenichi Kawabata, Toshio Hayakawa, Toshiro Okubo
  • Publication number: 20180033738
    Abstract: Disclosed herein is an electronic circuit package includes a substrate having a power supply pattern, a first electronic component mounted on a first region of a front surface of the substrate, a mold resin that covers the front surface of the substrate so as to embed the first electronic component therein, and a laminated film covering an upper surface of the mold resin, the laminated film including a magnetic film and a first metal film. The first metal film is connected to the power supply pattern. The magnetic film is selectively thick on the first region.
    Type: Application
    Filed: July 5, 2017
    Publication date: February 1, 2018
    Applicant: TDK Corporation
    Inventors: Kenichi KAWABATA, Toshio Hayakawa, Toshiro Okubo
  • Publication number: 20170309576
    Abstract: Disclosed herein is an electronic circuit package includes: a substrate having a power supply pattern; an electronic component mounted on a surface of the substrate; a mold resin covering the surface of the substrate so as to embed therein the electronic component; a magnetic film formed of a composite magnetic material obtained by dispersing magnetic fillers in a thermosetting resin material, the magnetic film covering upper and side surfaces of the molding resin and an edge portion of the front surface exposed to aside surface of the substrate; and a metal film connected to the power supply pattern and covering the molding resin through the magnetic film.
    Type: Application
    Filed: March 21, 2017
    Publication date: October 26, 2017
    Applicant: TDK Corporation
    Inventors: Kenichi KAWABATA, Toshio HAYAKAWA, Toshiro OKUBO
  • Publication number: 20170301628
    Abstract: Disclosed herein is an electronic circuit package includes: a substrate having a power supply pattern; an electronic component mounted on a surface of the substrate; a mold resin covering the surface of the substrate so as to embed therein the electronic component; a laminated structure of a magnetic film and a metal film, the laminated structure covering at least an upper surface of the molding resin. The metal film is connected to the power supply pattern, and a resistance value at an interface between the magnetic film and the metal film is equal to or larger than 106?.
    Type: Application
    Filed: March 21, 2017
    Publication date: October 19, 2017
    Applicant: TDK Corporation
    Inventors: Kenichi KAWABATA, Toshio HAYAKAWA, Toshiro OKUBO
  • Publication number: 20170294387
    Abstract: Disclosed herein is an electronic circuit package includes a substrate having a power supply pattern, a first electronic component mounted on a first region of a front surface of the substrate, a mold resin that covers the front surface of the substrate so as to embed the first electronic component therein and has a concave portion above the first region, a magnetic film selectively provided in the concave portion, and a first metal film that is connected to the power supply pattern and covers the mold resin.
    Type: Application
    Filed: December 16, 2016
    Publication date: October 12, 2017
    Applicant: TDK Corporation
    Inventors: Kenichi KAWABATA, Toshio HAYAKAWA, Toshiro OKUBO
  • Publication number: 20170278804
    Abstract: Disclosed herein is an electronic circuit package includes: a substrate having a power supply pattern; an electronic component mounted on a surface of the substrate; a mold resin covering the surface of the substrate so as to embed therein the electronic component; a magnetic film formed so as to contact at least a top surface of the mold resin; and a metal film electrically connected to the power supply pattern and covering the mold resin through the magnetic film.
    Type: Application
    Filed: November 15, 2016
    Publication date: September 28, 2017
    Applicant: TDK Corporation
    Inventors: KENICHI KAWABATA, Toshio HAYAKAWA, Toshiro OKUBO
  • Patent number: 7630616
    Abstract: A coil load driving circuit in which generation of radiation noise when a motor is stationary is minimized, includes output buffers that output a PWM pulse to both terminals of a motor; a transfer voltage generating circuit that outputs transfer voltages VTR1, VTR2 proportional to the difference between an input control voltage VIN and input reference voltage VREF; PWM comparators that output PWM signals PW1, PW2 corresponding to the transfer voltages VTR1, VTR2; and an output PWM pulse synthesis circuit that controls the output buffer in accordance with an AND signal of the PWM signal PW1 and an exclusive OR signal EX of the PWM signals PW1 and PW2, and controls the output buffer in accordance with an AND signal of the PWM signal PW2 and the exclusive OR signal EX.
    Type: Grant
    Filed: May 26, 2005
    Date of Patent: December 8, 2009
    Assignee: Rohm Co., Ltd.
    Inventor: Toshiro Okubo
  • Publication number: 20080018365
    Abstract: A coil load drive output circuit permits a reduction in radiation noise caused by switching.
    Type: Application
    Filed: June 1, 2005
    Publication date: January 24, 2008
    Applicant: ROHM CO., LTD.
    Inventor: Toshiro Okubo
  • Publication number: 20080019678
    Abstract: A coil load driving circuit in which generation of radiation noise when a motor is stationary is minimized, includes output buffers that output a PWM pulse to both terminals of a motor; a transfer voltage generating circuit that outputs transfer voltages VTR1, VTR2 proportional to the difference between an input control voltage VIN and input reference voltage VREF; PWM comparators that output PWM signals PW1, PW2 corresponding to the transfer voltages VTR1, VTR2; and an output PWM pulse synthesis circuit that controls the output buffer in accordance with an AND signal of the PWM signal PW1 and an exclusive OR signal EX of the PWM signals PW1 and PW2, and controls the output buffer in accordance with an AND signal of the PWM signal PW2 and the exclusive OR signal EX.
    Type: Application
    Filed: May 26, 2005
    Publication date: January 24, 2008
    Applicant: ROHM CO., LTD.
    Inventor: Toshiro Okubo
  • Publication number: 20040155621
    Abstract: A drive controller for brushless motors, comprising: a multiplicity of switching means each having a first switching element connected between a first power supply providing a first potential and an output terminal of the drive controller, and a second switching element connected between the output terminal and a second power supply providing a second potential; oscillator means for generating triangular signals; position signal generation means for generating sinusoidal position detection signals based on the signal detected by a position detector of the brushless motor; and comparator means for comparing the magnitudes of the triangular signals with the sinusoidal position detection signals to generate PWM signals. The first switching element and the second switching element of each switching means are turned ON/OFF alternately by the PWM signals. The mean potentials of the triangular signals and the sinusoidal position detection signals are set to the same potential.
    Type: Application
    Filed: February 2, 2004
    Publication date: August 12, 2004
    Applicant: ROHM CO., LTD.
    Inventor: Toshiro Okubo
  • Patent number: 6710572
    Abstract: A drive controller for brushless motors, comprising: a multiplicity of switching means each having a first switching element connected between a first power supply providing a first potential and an output terminal of the drive controller, and a second switching element connected between the output terminal and a second power supply providing a second potential; oscillator means for generating triangular signals; position signal generation means for generating sinusoidal position detection signals based on the signal detected by a position detector of the brushless motor; and comparator means for comparing the magnitudes of the triangular signals with the sinusoidal position detection signals to generate PWM signals. The first switching element and the second switching element of each switching means are turned ON/OFF alternately by the PWM signals. The mean potentials of the triangular signals and the sinusoidal position detection signals are set to the same potential.
    Type: Grant
    Filed: August 30, 2001
    Date of Patent: March 23, 2004
    Assignee: Rohm Co., Ltd.
    Inventor: Toshiro Okubo
  • Patent number: 6449427
    Abstract: Upon receipt of a reference voltage signal Vi and a multiplicity of logic control signals L1 and L2, the loading drive system converts the signals received into a first control voltage Vi1 and a second control voltage Vi2 in such that the voltage difference between the two logic control signals L1 and L2 represents the reference voltage signal, and the polarity of the difference represents the logic control signals. When the first and the second control voltages Vi1 and Vi2 are below a predetermined level, the one lower than the predetermined level is converted to zero Volt, and then the differences Vi1−Vi2 and Vi2−Vi1 are formed to define a first and a second output voltages, Vo1 and Vo2, respectively. Thus, the logic control signals and the reference voltage signal can be supplied from the controller to the loading driver by a fewer number of signal lines, and so are input and output terminals or pins associated with the signals.
    Type: Grant
    Filed: November 2, 2000
    Date of Patent: September 10, 2002
    Assignee: Rohm Co., Ltd.
    Inventor: Toshiro Okubo
  • Patent number: 6429635
    Abstract: A drive circuit for driving an FET includes a charge pump circuit which comprises multi-stage switching elements, condensers, and inversion buffers, and operates in response to the oscillatory output of an oscillator circuit; and a comparison means for comparing the output voltage of the charge pump circuit with a preset reference voltage to thereby control the oscillation of the oscillator circuit. The charge pump circuit is thus operated intermittently so as to provide a sufficiently large gate voltage to the MOSFET in a stable manner, thereby maintaining a constant output-load characteristic.
    Type: Grant
    Filed: March 8, 2001
    Date of Patent: August 6, 2002
    Assignee: Rohm Co., Ltd.
    Inventor: Toshiro Okubo
  • Patent number: 6369638
    Abstract: A balanced transformer-less (BTL) power drive circuit comprises a push-pull type output transistor section connected with a main power supply PowVcc, and an input control section connected with an auxiliary power supply for providing the output transistor section with a control signal. The potential of the auxiliary power supply is selectively set equal to or above the supply potential of the main power supply, depending on the requirements for the dynamic range of the power drive circuit. In accord with the potential of the auxiliary power supply thus set, the output reference potential Vref is set to the medium of the dynamic range, thereby ensuring the linearity of the input-output characteristic of the drive circuit, irrespective of the selected level of the auxiliary power supply.
    Type: Grant
    Filed: December 5, 2000
    Date of Patent: April 9, 2002
    Assignee: Rohm Co., Ltd.
    Inventor: Toshiro Okubo
  • Publication number: 20020030464
    Abstract: A drive controller for brushless motors, comprising: a multiplicity of switching means each having a first switching element connected between a first power supply providing a first potential and an output terminal of the drive controller, and a second switching element connected between the output terminal and a second power supply providing a second potential; oscillator means for generating triangular signals; position signal generation means for generating sinusoidal position detection signals based on the signal detected by a position detector of the brushless motor; and comparator means for comparing the magnitudes of the triangular signals with the sinusoidal position detection signals to generate PWM signals. The first switching element and the second switching element of each switching means are turned ON/OFF alternately by the PWM signals. The mean potentials of the triangular signals and the sinusoidal position detection signals are set to the same potential.
    Type: Application
    Filed: August 30, 2001
    Publication date: March 14, 2002
    Applicant: ROHM CO., LTD.
    Inventor: Toshiro Okubo
  • Publication number: 20010020841
    Abstract: A drive circuit for driving an FET including: a charge pump circuit (40) which comprises multi-stage switching elements (Q1-Q3), condensers (C1-C3), and inversion buffers (B1-B5), and operates in response to the oscillatory output of an oscillator circuit (OSC); and a comparison means (OP) for comparing the output voltage of the charge pump circuit with a preset reference voltage to thereby control the oscillation of the oscillator circuit (OSC). The charge pump circuit (40) is thus operated intermittently so as to provide a sufficiently large gate voltage to the MOSFET in a stable manner, thereby maintaining a constant output-load characteristic.
    Type: Application
    Filed: March 8, 2001
    Publication date: September 13, 2001
    Applicant: ROHM CO., LTD.
    Inventor: Toshiro Okubo