Patents by Inventor Masafumi Nakata

Masafumi Nakata 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: 9478203
    Abstract: A resonance tone generation apparatus 20 is applied to an electronic musical instrument DM having a tone generator for generating a musical tone signal indicative of a piano sound in accordance with a tone generation instruction signal having a key number n, and a plurality of output portions for externally outputting a musical tone signal. The resonance tone generation apparatus 20 has a plurality of resonance tone generation circuits 30(n) each of which is assigned a different key number n, retrieves a musical tone signal indicative of a musical sound of the piano, generates a musical tone signal indicative of a resonance tone imitating a tone of a string of the piano resonated by the musical sound of the piano indicated by the retrieved musical tone signal, and supplies the generated musical tone signal to the plurality of output portions.
    Type: Grant
    Filed: January 29, 2015
    Date of Patent: October 25, 2016
    Assignee: Yamaha Corporation
    Inventor: Masafumi Nakata
  • Patent number: 9245506
    Abstract: A resonance tone generation apparatus 20 is applied to an electronic musical instrument DM having a tone generator for generating, in accordance with a tone generation instruction signal having a key number n, a musical tone signal indicative of a piano sound having a key tone pitch specified by the key number. In the resonance tone generation apparatus 20, the key numbers n are assigned. The resonance tone generation apparatus 20 has a plurality of resonance tone generation circuits 30(n) each being configured to have a plurality of resonance frequencies and each retrieving a musical tone signal indicative of a musical sound of the piano and generating a musical tone signal indicative of a resonance tone which imitates a sound of strings of the piano, the sound being resonated by the piano sound indicated by the retrieved musical tone signal.
    Type: Grant
    Filed: January 29, 2015
    Date of Patent: January 26, 2016
    Assignee: Yamaha Corporation
    Inventor: Masafumi Nakata
  • Publication number: 20150228261
    Abstract: A resonance tone generation apparatus 20 is applied to an electronic musical instrument DM having a tone generator for generating, in accordance with a tone generation instruction signal having a key number n, a musical tone signal indicative of a piano sound having a key tone pitch specified by the key number. In the resonance tone generation apparatus 20, the key numbers n are assigned. The resonance tone generation apparatus 20 has a plurality of resonance tone generation circuits 30(n) each being configured to have a plurality of resonance frequencies and each retrieving a musical tone signal indicative of a musical sound of the piano and generating a musical tone signal indicative of a resonance tone which imitates a sound of strings of the piano, the sound being resonated by the piano sound indicated by the retrieved musical tone signal.
    Type: Application
    Filed: January 29, 2015
    Publication date: August 13, 2015
    Inventor: Masafumi NAKATA
  • Publication number: 20150221296
    Abstract: A resonance tone generation apparatus 20 is applied to an electronic musical instrument DM having a tone generator for generating a musical tone signal indicative of a piano sound in accordance with a tone generation instruction signal having a key number n, and a plurality of output portions for externally outputting a musical tone signal. The resonance tone generation apparatus 20 has a plurality of resonance tone generation circuits 30(n) each of which is assigned a different key number n, retrieves a musical tone signal indicative of a musical sound of the piano, generates a musical tone signal indicative of a resonance tone imitating a tone of a string of the piano resonated by the musical sound of the piano indicated by the retrieved musical tone signal, and supplies the generated musical tone signal to the plurality of output portions.
    Type: Application
    Filed: January 29, 2015
    Publication date: August 6, 2015
    Inventor: Masafumi NAKATA
  • Patent number: 5987162
    Abstract: An image processing method includes the steps of setting a predetermined concentric circular area of first and second image data as a workpiece image, dividing a plurality of pixels constituting the workpiece image in the concentric circular area into a concentric circuit arrangement and extracting the plurality of pixels, generating the plurality of pixels in the divided concentric circuit arrangement as a function of the central angular position of the concentric circle, computing the initial term resulting from subjecting the luminance of the plurality of pixels in the concentric circular arrangement to Fourier expansion together with the central angular position, computing the central angular position where the initial term of Fourier expansion is maximized as a function of a plurality of concentric radii, and comparing the function with the first and second image data so as to recognize the arrangement of an object to be detected.
    Type: Grant
    Filed: September 27, 1996
    Date of Patent: November 16, 1999
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Masafumi Nakata
  • Patent number: 5761068
    Abstract: A machining path in die sinking electrospark machining is more precisely checked before actual machining by displaying shaded images of a machined surface of a workpiece during and after die sinking electrospark machining, whereby and faulty machining operation in die sinking electrospark machining is minimized.
    Type: Grant
    Filed: February 29, 1996
    Date of Patent: June 2, 1998
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Masafumi Nakata
  • Patent number: 5532933
    Abstract: A CAD/CAM system comprises a removal shape extraction section for extracting removal shape data from the defined finish shape data and work shape data, and a machining step generation section for generating a machining step for each machining surface Z height of the removal shape extracted by the removal shape extraction section.
    Type: Grant
    Filed: March 14, 1994
    Date of Patent: July 2, 1996
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Masafumi Nakata