Patents by Inventor Kaoru Matsunaga

Kaoru Matsunaga 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: 20180301129
    Abstract: An electronic piano including a plurality of keys and a sound source device (sound emission section) that emits a sound by pressing down the key, is provided with a resonance circuit that stereo-inputs a sound source from the sound source device corresponding to the each key, a plurality of resonance circuit groups that execute a stereo mix process with the plurality of resonance circuits being made one group, and delay circuits that provide a time difference to each stereo output from the each resonance circuit group, and outputs of the respective delay circuits are synthesized to obtain a stereo output.
    Type: Application
    Filed: April 10, 2018
    Publication date: October 18, 2018
    Inventor: Kaoru Matsunaga
  • Patent number: 10102837
    Abstract: An electronic piano including a plurality of keys and a sound source device (sound emission section) that emits a sound by pressing down the key, is provided with a resonance circuit that stereo-inputs a sound source from the sound source device corresponding to the each key, a plurality of resonance circuit groups that execute a stereo mix process with the plurality of resonance circuits being made one group, and delay circuits that provide a time difference to each stereo output from the each resonance circuit group, and outputs of the respective delay circuits are synthesized to obtain a stereo output.
    Type: Grant
    Filed: April 10, 2018
    Date of Patent: October 16, 2018
    Assignee: KAWAI MUSICAL INSTRUMENTS MANUFACTURING CO., LTD.
    Inventor: Kaoru Matsunaga
  • Patent number: 10049651
    Abstract: In an electronic piano including plural keys and a sound source device (sound emission section) that emits a sound by pressing of the key, an intermediary resonance state of a resonance sound can be reproduced by including a resonance circuit that inputs a sound source from the sound source device corresponding to the each key and outputs a resonance sound, a position detection sensor (multi-stage switch section) in which plural switches close sequentially according to a key pressing state of the key, and a resonance sound control device that controls the resonance sound by an open/close state of plural switches by the position detection sensor.
    Type: Grant
    Filed: April 10, 2018
    Date of Patent: August 14, 2018
    Assignee: KAWAI MUSICAL INSTRUMENTS MANUFACTURING CO., LTD.
    Inventor: Kaoru Matsunaga
  • Patent number: 10028073
    Abstract: An effect giving device that can solve a problem that sound is localized inside a head when using a headphone and a problem that timbre changes depending on kind of the headphone is provided. A DSP 10 performs a speaker adjusting equalizer process that processes an entire bandwidth with seven bands. When output selecting means select a headphone 320, the DSP 10 performs a headphone adjusting equalizer process of the entire bandwidth with three bands of the equalizer process, and processes a process of other bands by replacing it to a lateralization sense alleviating process for the headphone 320. Since the headphone 320 and a speaker 318 are exclusively used, using an identical program storage area efficiently ensures an alleviation of a lateralization sense when using the headphone 320 and an adjustment of the timbre.
    Type: Grant
    Filed: October 5, 2015
    Date of Patent: July 17, 2018
    Assignee: Kawai Musical Instruments Manufacturing Co., Ltd.
    Inventors: Kaoru Matsunaga, Ikuya Kato
  • Publication number: 20170048642
    Abstract: An effect giving device that can solve a problem that sound is localized inside a head when using a headphone and a problem that timbre changes depending on kind of the headphone is provided. A DSP 10 performs a speaker adjusting equalizer process that processes an entire bandwidth with seven bands. When output selecting means select a headphone 320, the DSP 10 performs a headphone adjusting equalizer process of the entire bandwidth with three bands of the equalizer process, and processes a process of other bands by replacing it to a lateralization sense alleviating process for the headphone 320. Since the headphone 320 and a speaker 318 are exclusively used, using an identical program storage area efficiently ensures an alleviation of a lateralization sense when using the headphone 320 and an adjustment of the timbre.
    Type: Application
    Filed: October 5, 2015
    Publication date: February 16, 2017
    Applicant: Kawai Musical Instruments Manufacturing Co., Ltd.
    Inventors: Kaoru MATSUNAGA, Ikuya KATO
  • Patent number: 9330648
    Abstract: An electronic keyboard musical instrument includes a storage device, a musical tone generation unit, a resonating sound generation unit, and an adding unit. The musical tone generation unit reads out corresponding musical tone waveform data from the storage device according to key depression information to generate a musical tone waveform signal and a first register resonating sound waveform signal. The resonating sound generation unit receives the musical tone waveform signal to cause the resonating sound generation circuit to generate a second register resonating sound waveform signal according to damper pedal operator manipulation information and the key depression information, and outputs the second register resonating sound waveform signal. The adding unit is configured to add the musical tone waveform signal and the resonating sound waveform signal from the musical tone generation unit and the resonating sound generation unit respectively, and outputting a resulting signal.
    Type: Grant
    Filed: January 30, 2015
    Date of Patent: May 3, 2016
    Assignee: Kabushiki Kaisha Kawai Gakki Seisakusho
    Inventor: Kaoru Matsunaga
  • Publication number: 20150269922
    Abstract: An electronic keyboard musical instrument includes a storage device, a musical tone generation unit, a resonating sound generation unit, and an adding unit. The musical tone generation unit reads out corresponding musical tone waveform data from the storage device according to key depression information to generate a musical tone waveform signal and a first register resonating sound waveform signal. The resonating sound generation unit receives the musical tone waveform signal to cause the resonating sound generation circuit to generate a second register resonating sound waveform signal according to damper pedal operator manipulation information and the key depression information, and outputs the second register resonating sound waveform signal. The adding unit is configured to add the musical tone waveform signal and the resonating sound waveform signal from the musical tone generation unit and the resonating sound generation unit respectively, and outputting a resulting signal.
    Type: Application
    Filed: January 30, 2015
    Publication date: September 24, 2015
    Applicant: Kabushiki Kaisha Kawai Gakki Seisakusho
    Inventor: Kaoru MATSUNAGA
  • Patent number: 5693901
    Abstract: According to a first invention, provided is an electronic musical instrument, which decodes and reads waveforms that are compressed by the DPCM method or the ADPCM method, that stores a prediction filter coefficient that is consonant with each waveform and reproduces musical tones by using the prediction filter coefficient. In the first invention, a waveform that is stored in the electronic musical instrument is stored together with a prediction filter coefficient that is used when the waveform was prepared, and the optimal prediction filter coefficient is employed for each waveform to reproduce a waveform.According to a second invention, provided is an electronic musical instrument, which decodes waveforms that are compressed by the DPCM method or the ADPCM method and repeatedly reads the decoded data, that can repetitiously read waveform data at the loop top without requiring a device for setting a decoding device.
    Type: Grant
    Filed: April 4, 1996
    Date of Patent: December 2, 1997
    Assignee: Kabushiki Kaisha Kawai Gakki Seisakusho
    Inventor: Kaoru Matsunaga
  • Patent number: 5597970
    Abstract: In the waveform processing apparatus of the present invention, an original sound signal is divided into a plurality of bands, parameters such as amplitude and frequency are extracted for each band, and correction is made so that the amount of deviation of the parameters from the mean value thereof is gradually decreased to zero from a certain time to the time when the repetition period begins, whereby a musical tone signal is re-synthesized based on the corrected parameters. The electronic musical instrument which stores the waveforms processed by the apparatus of the present invention generates musical tones having more natural tone color change.
    Type: Grant
    Filed: October 21, 1994
    Date of Patent: January 28, 1997
    Assignee: Kabushiki Kaisha Kawai Gakki Seisakusho
    Inventors: Hiroshi Sato, Kaoru Matsunaga
  • Patent number: 5447829
    Abstract: A package of a rolled photosensitive material comprising a core, a rolled photosensitive material wound around the core, a light-shielding leader which shields the peripheral face of the rolled photosensitive material from light, a pair of side plate inner rings which shield both sides of the rolled photosensitive material, an adhesive layer which adheres each of the side plate inner rings to the core, a caulking part which is formed on the adhesive layer and which enters the core, and a light-shielding part which is formed on the side plate inner ring, which adheres to the caulking part, and of which the inner end is positioned on the inner part from the surface of the core. The package can ensure light-shielding at the side plate inner ring simply and inexpensively, and having a sufficient adhesive strength between the side plate inner ring and the core.
    Type: Grant
    Filed: January 18, 1994
    Date of Patent: September 5, 1995
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kyoushi Tamai, Kazuo Ui, Kaoru Matsunaga, Yoshio Ishizuka
  • Patent number: 5270481
    Abstract: An electronic musical instrument comprises a filter coefficient generator, including a control signal generator for receiving timbre information, tone range information and touch information and for generating the first and second parameters to control a filter characteristic; a trigonometric function generator for generating a trigonometric function value based on the first parameter generated by the control signal generator; and a filter coefficient computing circuit for computing the trigonometric function value generated by the trigonometric function generator and the second parameter generated by the control signal generator. The filter coefficient generator sequentially generates filter coefficients by computation and sends them to a digital filter to continuously change the filter characteristic of the digital filter, thereby producing musical tones.
    Type: Grant
    Filed: July 13, 1992
    Date of Patent: December 14, 1993
    Assignee: Kabushiki Kaisha Kawai Gakki Seisakusho
    Inventors: Kaoru Matsunaga, Yutaka Washiyama
  • Patent number: 4760016
    Abstract: A silver halide color photographic light sensitive material is disclosed, which is excellent in the resistance to the back contamination of the processing liquid. The color photographic material comprises a support having thereon photographic component layers containing at least one silver halide emulsion layer. The emulsion containing at least one emulsion layer of the photographic component layers is a surface latent image forming type silver chloride or silver chloro-brobromide emulsion. And at least one of the photographic component layers contains at least one compound selected from the compounds represented by the formula [I]:A-(TIME)n-Z [I]in which A is a coupler component capable of coupling with the oxidized product of a color developing agent, Z is a component capable of releasing from A upon the coupling reaction of A with the oxidized product of the color developing agent and inhibiting the development of the silver halide, and Z has at least one hydrophilic group.
    Type: Grant
    Filed: October 14, 1986
    Date of Patent: July 26, 1988
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Shigeto Hirabayashi, Kaoru Matsunaga