Patents by Inventor Kenichi Miyazawa

Kenichi Miyazawa 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: 20200341047
    Abstract: A power module according to the present invention switches an operation mode between a control mode where an ON/OFF operation of a switching element having a first electrode, a second electrode, and a third electrode is controlled, and a deterioration determination mode where the deterioration is determined based on information including ?Vgs based on information including a threshold voltage detected before a stress current is supplied to the switching element and a threshold voltage detected after the stress current is supplied to the switching element. According to the power module of the present invention, the deterioration can be determined during an operation time and hence, breaking of the device can be prevented, and operation efficiency of the power module can be increased, and a manufacturing cost of the power module can be lowered.
    Type: Application
    Filed: December 22, 2017
    Publication date: October 29, 2020
    Inventors: Kenichi SUZUKI, Wataru MIYAZAWA
  • Publication number: 20200287532
    Abstract: A switching element control circuit includes a third electrode voltage control part which controls a third electrode voltage; a temperature detection part which detects an operation temperature of the switching element; a memory part which stores an initial threshold voltage, an initial temperature when the initial threshold voltage is measured, and a temperature characteristic of a threshold voltage; and a threshold voltage calculation part which calculates a threshold voltage at the time of operating the switching element based on information including the operation temperature of the switching element, the initial threshold voltage, and an initial temperature when the initial threshold voltage is measured, and information relating to a temperature characteristic of a threshold voltage, wherein the third electrode voltage control part controls the third electrode voltage based on a threshold voltage at the time of operating the switching element calculated by the threshold voltage calculation part.
    Type: Application
    Filed: September 21, 2017
    Publication date: September 10, 2020
    Inventors: Kenichi SUZUKI, Wataru MIYAZAWA
  • Publication number: 20200052692
    Abstract: A switching element control circuit is configured to perform a measurement mode in which a threshold voltage of a switching element is measured and a control mode in which an ON/OFF operation of the switching element is controlled in a switching manner. The switching element control circuit includes: a threshold voltage measurement power source; a third electrode voltage control part; an ON/OFF state determination part; and a memory part which stores the third electrode voltage applied to the third electrode as a threshold voltage of the switching element. The third electrode voltage control part controls, in the control mode, the third electrode voltage based on information including the threshold voltage stored in the memory part at the time of bringing the switching element into an ON state.
    Type: Application
    Filed: April 25, 2017
    Publication date: February 13, 2020
    Applicant: SHINDENGEN ELECTRIC MANUFACTURING CO., LTD.
    Inventors: Kenichi SUZUKI, Wataru MIYAZAWA
  • Publication number: 20190325850
    Abstract: A manufacturing method for a board for a stringed instrument that is used as a top plate or a back plate of an acoustic stringed instrument such as a violin, where the board has a purfling, includes forming, for instance, a groove with a depth that is 20% or more and less than 60% of a thickness of the board for a stringed instrument, filling the groove with a resin in which, for instance, colored particles having a diameter of 3 ?m or more and less than 70 ?m are dispersed and which has a degree of elongation of 20% or more, removing the resin that has flowed out of the groove, and curing the resin.
    Type: Application
    Filed: July 3, 2019
    Publication date: October 24, 2019
    Inventors: Kazuki SOGA, Toshihisa YAMAZAKI, Hiroshi NAKAYA, Kenichi MIYAZAWA
  • Patent number: 9666168
    Abstract: A board for a stringed instrument which forms a front plate or a back plate of a stringed instrument, includes: a laminated plate that is obtained by laminating a plurality of veneers having a uniform thickness by an adhesive, at least one of the veneers having a different planar shape than the other veneers, in which the laminated plate is curved to be convex toward one surface side and has a thin portion and a thick portion.
    Type: Grant
    Filed: October 20, 2014
    Date of Patent: May 30, 2017
    Assignee: Yamaha Corporation
    Inventors: Kazuki Soga, Toshihisa Yamazaki, Tatsuya Hiraku, Hiroshi Nakaya, Kenichi Miyazawa
  • Patent number: 9406285
    Abstract: A board for a stringed instrument which forms a front plate or a back plate of a stringed instrument, includes: a veneer that includes a concave portion for partially reducing the thickness of the veneer, in which the veneer is curved to be convex toward one surface side. In this board for a stringed instrument, fiber of the veneer may extend along the curved shape of the veneer.
    Type: Grant
    Filed: October 20, 2014
    Date of Patent: August 2, 2016
    Assignee: Yamaha Corporation
    Inventors: Kazuki Soga, Toshihisa Yamazaki, Tatsuya Hiraku, Hiroshi Nakaya, Kenichi Miyazawa
  • Publication number: 20150107434
    Abstract: A board for a stringed instrument which forms a front plate or a back plate of a stringed instrument, includes: a veneer that includes a concave portion for partially reducing the thickness of the veneer, in which the veneer is curved to be convex toward one surface side. In this board for a stringed instrument, fiber of the veneer may extend along the curved shape of the veneer.
    Type: Application
    Filed: October 20, 2014
    Publication date: April 23, 2015
    Inventors: KAZUKI SOGA, Toshihisa Yamazaki, Tatsuya Hiraku, Hiroshi Nakaya, Kenichi Miyazawa
  • Publication number: 20150107435
    Abstract: A board for a stringed instrument which forms a front plate or a back plate of a stringed instrument, includes: a laminated plate that is obtained by laminating a plurality of veneers having a uniform thickness by an adhesive, at least one of the veneers having a different planar shape than the other veneers, in which the laminated plate is curved to be convex toward one surface side and has a thin portion and a thick portion.
    Type: Application
    Filed: October 20, 2014
    Publication date: April 23, 2015
    Inventors: Kazuki Soga, Toshihisa Yamazaki, Tatsuya Hiraku, Hiroshi Nakaya, Kenichi Miyazawa
  • Patent number: 7560634
    Abstract: An electronic musical instrument includes a tuning device, a keyboard, a tone generator, a microphone, a measurement unit, and a display attached to the backside of the housing. The tone generator generates a plurality of reference tones in response to the operation of the keyboard, while the microphone receives a plurality of musical tones, which are generated by at least one musical instrument subjected to tuning. Different tone colors can be applied to the reference tones. The measurement unit measures a plurality of pitch differences between the reference tones and the musical tones subjected to tuning, so that the display displays the pitch differences in comparison with each other.
    Type: Grant
    Filed: January 17, 2007
    Date of Patent: July 14, 2009
    Assignee: Yamaha Corporation
    Inventor: Kenichi Miyazawa
  • Patent number: 7528318
    Abstract: There is provided a musical tone control apparatus that enables a user to easily play a musical instrument without spoiling the user's feeling that he is actually playing a musical instrument. A storage device stores musical piece data containing interval data indicative of intervals of musical tones constituting a musical piece. A motion of an operator is detected. A controller provides control so as to instruct a musical tone output device capable of outputting musical tones to adopt the intervals as one of characteristic amounts relating to musical tones to be output from the musical tone output device, according to the interval data, and instruct the musical tone output device to adopt at least one of the characteristic amounts other than the intervals according to the detected motion of the operator.
    Type: Grant
    Filed: October 12, 2007
    Date of Patent: May 5, 2009
    Assignee: Yamaha Corporation
    Inventors: Yoshiki Nishitani, Kenichi Miyazawa, Nagayuki Kato, Masaharu Ono
  • Patent number: 7512246
    Abstract: A stereo sounding method which can provide realistic sounds such as stereo sounds for a large number of listeners while reducing the number of speakers. A stereo sounding system is comprised of a plurality of stereo sound sources, and a plurality of speakers. A smaller number of speakers than twice the number of the plurality of stereo sound sources are arranged, and an R-channel output from at least one stereo sound source among the plurality of stereo sound sources and an L-channel output from a stereo sound source other than the at least one stereo sound source are mixed, and the mixing result is output to at least one of the arranged speakers.
    Type: Grant
    Filed: April 28, 2004
    Date of Patent: March 31, 2009
    Assignee: Yamaha Corporation
    Inventors: Yoshiki Nishitani, Kenichi Miyazawa, Akira Miki, Kenji Ishida
  • Patent number: 7371954
    Abstract: A tuner apparatus 10 causes a user to designate a musical instrument that is to be tuned and a reference pitch that is a standard upon tuning, by a process at a setting portion 110. A pitch detecting portion 130 detects a pitch of a performed note inputted via a microphone 20 and input portion 120. A target note specifying portion 140 defines a note name, which is positioned nearest to the performed note in a predetermined temperament (e.g., 12-note equal temperament), as a target note based upon the detected pitch of the performed note and the inputted reference pitch. Then, a calculating portion 150 calculates a difference between the pitch of the performed note and the pitch of the target note, and a display control portion 160 causes the display device 30 to display the calculated difference.
    Type: Grant
    Filed: August 2, 2005
    Date of Patent: May 13, 2008
    Assignee: Yamaha Corporation
    Inventors: Hideyuki Masuda, Mari Yana, Kenichi Miyazawa, Tsuyoshi Miyaki
  • Patent number: 7351903
    Abstract: There is provided a musical composition data editing apparatus which enables the generation of musical composition data using which a user can cause his/her own musical image to be reflected to a high degree in a musical composition performance through simple operations, whereby a wide variety of users from beginners having no knowledge of musical composition data such as MIDI data to experts who want to arrange musical compositions in their own manner can be satisfied. A standard musical composition data generating section 230 of a contents server CS refers to musical composition reproduction control codes for controlling reproduction of a musical composition contained in source musical composition data, to determine whether or not a musical image in the musical composition reproduction changes.
    Type: Grant
    Filed: July 29, 2003
    Date of Patent: April 1, 2008
    Assignee: Yamaha Corporation
    Inventors: Kenji Ishida, Kenichi Miyazawa, Yoshitaka Masumoto, Yoshiki Nishitani
  • Publication number: 20080049204
    Abstract: A multi-column type electron beam exposure apparatus includes: plural column cells disposed over a wafer, each including an electron gun, deflector for deflecting an electron beam emitted by the electron gun, and exposure data receiving unit for receiving exposure data; and correction computing unit for calculating the exposure data for use in the column cells. The correction computing unit includes exposure data controlling unit and exposure data transmitting unit for each of the column cells. The exposure data transmitting unit encodes the exposure data corrected by the exposure data controlling unit to convert the data into serial data, converts the serial data into a light signal, and transmits the light signal. The exposure data receiving unit converts the light signal into an electric signal, and decodes the encoded exposure data to convert the data into parallel data.
    Type: Application
    Filed: August 30, 2007
    Publication date: February 28, 2008
    Inventors: Hidefumi Yabara, Kenichi Miyazawa, Tomohiro Sakazaki, Kazuaki Tanaka
  • Publication number: 20080034949
    Abstract: There is provided a musical tone control apparatus that enables a user to easily play a musical instrument without spoiling the user's feeling that he is actually playing a musical instrument. A storage device stores musical piece data containing interval data indicative of intervals of musical tones constituting a musical piece. A motion of an operator is detected. A controller provides control so as to instruct a musical tone output device capable of outputting musical tones to adopt the intervals as one of characteristic amounts relating to musical tones to be output from the musical tone output device, according to the interval data, and instruct the musical tone output device to adopt at least one of the characteristic amounts other than the intervals according to the detected motion of the operator.
    Type: Application
    Filed: October 12, 2007
    Publication date: February 14, 2008
    Applicant: Yamaha Corporation
    Inventors: Yoshiki NISHITANI, Kenichi Miyazawa, Nagayuki Kato, Masaharu Ono
  • Patent number: 7323631
    Abstract: In an instrument performance learning apparatus, a storage section stores model performance waveform data representing a time series of individual performance sounds of a model performance. An input section inputs real performance waveform data representing a time series of individual performance sounds of a real performance. A pitch graph display control section detects each pitch of each individual performance sound from the stored model performance waveform data and from the inputted real performance waveform data, and displays a pitch graph representing transitions of the detected pitches.
    Type: Grant
    Filed: July 15, 2005
    Date of Patent: January 29, 2008
    Assignee: Yamaha Corporation
    Inventors: Tsuyoshi Miyaki, Hideyuki Masuda, Kenichi Miyazawa, Mari Yana
  • Patent number: 7297862
    Abstract: There is provided a musical tone control apparatus that enables a user to easily play a musical instrument without spoiling the user's feeling that he is actually playing a musical instrument. A storage device stores musical piece data containing interval data indicative of intervals of musical tones constituting a musical piece. A motion of an operator is detected. A controller provides control so as to instruct a musical tone output device capable of outputting musical tones to adopt the intervals as one of characteristic amounts relating to musical tones to be output from the musical tone output device, according to the interval data, and instruct the musical tone output device to adopt at least one of the characteristic amounts other than the intervals according to the detected motion of the operator.
    Type: Grant
    Filed: September 4, 2002
    Date of Patent: November 20, 2007
    Assignee: Yamaha Corporation
    Inventors: Yoshiki Nishitani, Kenichi Miyazawa, Masaharu Ono, Nagayuki Kato
  • Publication number: 20070169612
    Abstract: An electronic musical instrument includes a tuning device, a keyboard, a tone generator, a microphone, a measurement unit, and a display attached to the backside of the housing. The tone generator generates a plurality of reference tones in response to the operation of the keyboard, while the microphone receives a plurality of musical tones, which are generated by at least one musical instrument subjected to tuning. Different tone colors can be applied to the reference tones. The measurement unit measures a plurality of pitch differences between the reference tones and the musical tones subjected to tuning, so that the display displays the pitch differences in comparison with each other.
    Type: Application
    Filed: January 17, 2007
    Publication date: July 26, 2007
    Applicant: Yamaha Corporation
    Inventor: Kenichi Miyazawa
  • Patent number: 7147191
    Abstract: A display tilting apparatus includes a moving bracket that supports a display, a ratchet mechanism that controls pivoting of the moving bracket to a first direction, an anti-tilting mechanism that inhibits pivoting of the moving bracket to a second direction that is opposite of the first direction, and a fixed bracket that is pivotably connected to the moving bracket via a pivot axis. The anti-tilting mechanism includes a first anti-tilting member, and a second anti-tilting member that is mounted on the fixed bracket. The first anti-tilting member and the second anti-tilting member are mounted so as to make a physical contact to each other.
    Type: Grant
    Filed: July 16, 2004
    Date of Patent: December 12, 2006
    Assignees: Fujitsu Limited, Fujitsu Frontech Limited
    Inventors: Toshiyuki Ichikawa, Kenichi Miyazawa, Noboru Ishii, Takuma Yoshida, Satoshi Nishioka
  • Patent number: 7055334
    Abstract: An indoor air-conditioning unit 10 which can effectively deactivate allergens includes an intake grill 11 for drawing in indoor air. Indoor heat exchangers 13, 14, and 15 exchange heat between air drawn in from the intake grill 11 and a refrigerant to thereby cool or heat the air. A diffuser 16 returns the air which has been heat-exchanged with the indoor heat exchangers 13, 14, 15, back into the room. A cross-flow fan 17 blows air which has been drawn in from the inlet and heat exchanged from the diffuser 16 into the room. An allergen deactivation filter 18 is arranged in an internal space 5 through which the air flows and supports an allergen deactivation enzyme. An enzyme activation device maintains the internal space S in an atmosphere for activating the allergen deactivation enzyme.
    Type: Grant
    Filed: March 17, 2004
    Date of Patent: June 6, 2006
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Daisuke Tanaka, Katsuhiro Hashitsume, Seiji Ando, Yuji Nakajima, Susumu Kojima, Kenichi Miyazawa, Hiroshi Kanbara, Takayuki Suzuki