Patents by Inventor Koichi Yamashita

Koichi Yamashita 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: 20150016722
    Abstract: A region determination circuit (60) determines whether or not each of the pixels in an image is within a region subject to correction, in which pixels having at most a predetermined brightness level appear with a frequency equal to or less than a predetermined value. An offset level generation circuit (10) generates an offset level (Offset) on the basis of the brightness of the pixels determined to be within the region subject to correction. An offset subtraction circuit (1) subtracts the offset level (Offset) from the image signal (Yi) to generate an offset image signal (Yofst). A gain generation circuit (20) generates a gain for the offset image signal (Yofst). A gain multiplication circuit (2) multiplies the offset image signal (Yofst) by the gain to generate a corrected image signal (Ya).
    Type: Application
    Filed: February 21, 2013
    Publication date: January 15, 2015
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Tsubasa Onda, Yoshitaka Toyoda, Daisuke Suzuki, Koichi Yamashita, Narihiro Matoba
  • Patent number: 8929580
    Abstract: Provided are a sound generation system and a sound recording system, which are placed in a room to adjust sound. A columnar body is disposed around a sound source to adjust how much sound of a low-tone range, as well as of a middle- and high-tone range, is absorbed and diffused. Moreover, a columnar body is disposed around a recording device to adjust how much sound of a low-tone range, as well as of a middle- and high-tone range, is absorbed and diffused. The columnar bodies may be made of a combination of different diameters and/or lengths. The arrangement distances may be random. With the columnar body disposed at the most appropriate location, it is possible to adjust sound in a wide band.
    Type: Grant
    Filed: February 3, 2010
    Date of Patent: January 6, 2015
    Assignee: Nittobo Acoustic Engineering Co., Ltd.
    Inventors: Shinji Ohashi, Koichi Yamashita, Yasushi Satake, Katsuyuki Kanazawa
  • Publication number: 20140334654
    Abstract: Provided are a sound generation system and a sound recording system, which are placed in a room to adjust sound. A columnar body is disposed around a sound source to adjust how much sound of a low-tone range, as well as of a middle- and high-tone range, is absorbed and diffused. Moreover, a columnar body is disposed around a recording device to adjust how much sound of a low-tone range, as well as of a middle- and high-tone range, is absorbed and diffused. The columnar bodies may be made of a combination of different diameters and/or lengths. The arrangement distances may be random. With the columnar body disposed at the most appropriate location, it is possible to adjust sound in a wide band.
    Type: Application
    Filed: May 15, 2014
    Publication date: November 13, 2014
    Applicant: NITTOBO ACOUSTIC ENGINEERING CO., LTD
    Inventors: Shinji OHASHI, Koichi YAMASHITA, Yasushi SATAKE, Katsuyuki KANAZAWA
  • Patent number: 8818108
    Abstract: An image processing device includes an in-plane pattern detector that selects a pixel of interest in a frame image of interest, calculates in-plane correlation index values representing correlations between the pixel of interest and in-plane pixel patterns including the pixel of interest, and selects a most highly correlated pattern as an in-plane addition pattern. A reference pattern detector calculates inter-plane correlation index values representing correlations between the in-plane pixel addition pattern and reference pixel patterns in a reference frame image temporally adjoining the frame of interest, and selects a most highly correlated reference pixel pattern. A pixel adder adds the values of the pixels in the selected in-plane pixel pattern and the selected reference pixel addition pattern to generate a corrected pixel value, thereby achieving high sensitivity and a high signal-to-noise ratio under low illumination, with little loss of resolution.
    Type: Grant
    Filed: June 12, 2012
    Date of Patent: August 26, 2014
    Assignee: Mitsubishi Electric Corporation
    Inventors: Daisuke Suzuki, Koichi Yamashita
  • Patent number: 8712740
    Abstract: Provided is a high-accuracy signal judgment method for noise or vibrations of a living environment. Provided is a signal judgment method associated with noise or vibrations of a living environment. The signal judgment method includes: inputting, into a model equation of a to-be-measured/analyzed target, unknown data; and obtaining an output value as a probability value of whether the unknown data is a to-be-measured/analyzed target. The model equation of the to-be-measured/analyzed target is created with the use of measured already-known data. The model equation is created by prediction model equation calculation means. Incidentally, a logistic regression equation can be used as the prediction model equation.
    Type: Grant
    Filed: May 14, 2008
    Date of Patent: April 29, 2014
    Assignee: Nittobo Acoustic Engineering Co., Ltd.
    Inventors: Kenichi Morio, Yoshio Tadahira, Koichi Yamashita, Shinji Ohashi, Toshihito Matsui
  • Publication number: 20130336596
    Abstract: For each pixel in an image (Din), a contrast correlation value (CT) is detected for peripheral areas centered around the pixel to be corrected (1), a contrast enhancement coefficient (Ken) is determined in accordance with the contrast correlation value (CT) (2), and in accordance with the enhancement coefficient (Ken), local contrast is enhanced for each pixel and an intermediate image (D3) is generated (3). When performing noise reduction (5) by smoothing the intermediate image (D3) in the time direction, the degree of noise reduction is controlled in accordance with a noise reduction coefficient (Knr) that is large where the enhancement coefficient (Ken) is large. With respect to a low-contrast image such as one captured under fog, haze or other poor weather conditions, the contrast in areas having reduced contrast is appropriately improved, and the noise that is enhanced in conjunction with contrast improvement is reduced, enabling a high quality image to be obtained.
    Type: Application
    Filed: January 31, 2012
    Publication date: December 19, 2013
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yoshitaka Toyoda, Daisuke Suzuki, Koichi Yamashita, Takashi Ito, Narihiro Matoba
  • Patent number: 8610551
    Abstract: A vehicle status notification device for a construction machine, includes: a key switch connected to a battery; an engine shut-off switch which is serially connected to a downstream side of the key switch in a connection line between the battery and an engine controller configured to control engine operation; and a control unit configured to perform control to notify a notification unit that the engine shut-off switch is in an OFF state in a case that a signal at the downstream side of the engine shut-off switch is in the OFF state while a signal at an upstream side of the engine shut-off switch is in an ON state.
    Type: Grant
    Filed: November 1, 2011
    Date of Patent: December 17, 2013
    Assignee: Komatsu Ltd.
    Inventors: Mitsuhiro Shimazu, Koichi Yamashita
  • Publication number: 20130216782
    Abstract: Provided are a decorative resin sheet that sufficiently brings together embossing property and embossment-retaining property, and a molded resin article on which an embossment excellent in design is formed and a method of manufacturing the molded resin article. The method of manufacturing a molded resin article includes the steps of: providing a resin sheet having a mold layer containing a polyolefin-based resin as a main component, followed by formation of an embossment on the resin sheet so that the embossment is formed on a surface of the mold layer; crosslinking the mold layer on which the embossment is formed so that a 100% modulus of the resin sheet at 200° C. becomes 0.
    Type: Application
    Filed: September 6, 2011
    Publication date: August 22, 2013
    Applicants: TATSUTA CHEMICAL CO., LTD., KANEKA CORPORATION
    Inventors: Koichi Yamashita, Shigehiro Kanou, Masami Nishikawa, Kaoru Yaguchi, Fumihito Tonomura
  • Publication number: 20130207797
    Abstract: A vehicle status notification device for a construction machine, includes: a key switch connected to a battery; an engine shut-off switch which is serially connected to a downstream side of the key switch in a connection line between the battery and an engine controller configured to control engine operation; and a control unit configured to perform control to notify a notification unit that the engine shut-off switch is in an OFF state in a case that a signal at the downstream side of the engine shut-off switch is in the OFF state while a signal at an upstream side of the engine shut-off switch is in an ON state.
    Type: Application
    Filed: November 1, 2011
    Publication date: August 15, 2013
    Applicant: KOMATSU LTD.
    Inventors: Mitsuhiro Shimazu, Koichi Yamashita
  • Publication number: 20130071036
    Abstract: An image processing device includes an in-plane pattern detector that selects a pixel of interest in a frame image of interest, calculates in-plane correlation index values representing correlations between the pixel of interest and in-plane pixel patterns including the pixel of interest, and selects a most highly correlated pattern as an in-plane addition pattern. A reference pattern detector calculates inter-plane correlation index values representing correlations between the in-plane pixel addition pattern and reference pixel patterns in a reference frame image temporally adjoining the frame of interest, and selects a most highly correlated reference pixel pattern. A pixel adder adds the values of the pixels in the selected in-plane pixel pattern and the selected reference pixel addition pattern to generate a corrected pixel value, thereby achieving high sensitivity and a high signal-to-noise ratio under low illumination, with little loss of resolution.
    Type: Application
    Filed: June 12, 2012
    Publication date: March 21, 2013
    Inventors: Daisuke SUZUKI, Koichi Yamashita
  • Publication number: 20130006495
    Abstract: A guidance output device, which outputs guidance for improving fuel economy when an energy wasting operation is detected in a construction machine that is provided with an exhaust gas purifying device for an internal combustion engine, includes a regeneration process determining unit that determines whether a regeneration process is in progress in the exhaust gas purifying device. It also includes a guidance output restriction unit that restricts an output of the guidance for energy saving by the guidance output unit when the regeneration process determining unit determines that the regeneration process is in progress in the exhaust gas purifying device.
    Type: Application
    Filed: November 4, 2011
    Publication date: January 3, 2013
    Applicant: KOMATSU LTD.
    Inventors: Kentarou Tajima, Seiji Kamada, Koichi Yamashita
  • Publication number: 20120014551
    Abstract: Provided are a sound generation system and a sound recording system, which are placed in a room to adjust sound. A columnar body is disposed around a sound source to adjust how much sound of a low-tone range, as well as of a middle- and high-tone range, is absorbed and diffused. Moreover, a columnar body is disposed around a recording device to adjust how much sound of a low-tone range, as well as of a middle- and high-tone range, is absorbed and diffused. The columnar bodies may be made of a combination of different diameters and/or lengths. The arrangement distances may be random. With the columnar body disposed at the most appropriate location, it is possible to adjust sound in a wide band.
    Type: Application
    Filed: February 3, 2010
    Publication date: January 19, 2012
    Inventors: Shinji Ohashi, Koichi Yamashita, Yasushi Satake, Katsuyuki Kanazawa
  • Publication number: 20110066411
    Abstract: Provided is a high-accuracy signal judgment method for noise or vibrations of a living environment. Provided is a signal judgment method associated with noise or vibrations of a living environment. The signal judgment method includes: inputting, into a model equation of a to-be-measured/analyzed target, unknown data; and obtaining an output value as a probability value of whether the unknown data is a to-be-measured/analyzed target. The model equation of the to-be-measured/analyzed target is created with the use of measured already-known data. The model equation is created by prediction model equation calculation means. Incidentally, a logistic regression equation can be used as the prediction model equation.
    Type: Application
    Filed: May 14, 2008
    Publication date: March 17, 2011
    Inventors: Kenichi Morio, Yoshio Tadahira, Koichi Yamashita, Shinji Ohashi, Toshihito Matsui
  • Publication number: 20110051952
    Abstract: A sound source can be identified and measured for a long time period outdoors and indoors. A sound source identifying and measuring apparatus including a baffle provided with a frame and a weather-resistant screen for providing an aerial clearance is used for long-term indoor and outdoor measurement at a sound source measurement location to acquire sound source information in all the directions and associate the azimuth, elevation, sound pressure information and/or frequency characteristics or the like per elapsed time. A directional digital filter as well as identification parameters of a target sound source and untargeted sound source are used to identify the sound source more accurately for identification and measurement of the target sound source. Contribution of all of a plurality of sound sources to a sound pressure level is separated in terms of the coming direction for analysis.
    Type: Application
    Filed: January 18, 2008
    Publication date: March 3, 2011
    Inventors: Shinji Ohashi, Yoshio Tadahira, Koichi Yamashita
  • Patent number: 7763795
    Abstract: Disclosed are a method for effectively preventing the contact between the surface of a titanium oxide semiconductor electrode and an electrolyte solution, a photoelectric conversion device exhibiting high photoelectric conversion efficiency, and a dye-sensitized solar cell using the said photoelectric conversion device. The photoelectric conversion device comprising a dye-sensitized semiconductor electrode is manufactured by letting a semiconductor adsorb a sensitizing dye, then rinsing the dye-adsorbed semiconductor, and finally letting the rinsed dye-adsorbed semiconductor adsorb a carboxylic acid in supercritical carbon dioxide. The adsorption of a dye and the rinsing are performed preferably in supercritical carbon dioxide in the presence or absence of an alcohol of 1-4 carbon atoms.
    Type: Grant
    Filed: February 28, 2006
    Date of Patent: July 27, 2010
    Assignee: National University Corporation Kyushu Institute of Technology
    Inventors: Shuzi Hayase, Mitsuru Kono, Koichi Yamashita, Yoshihiro Yamaguchi
  • Patent number: 7719575
    Abstract: A regression analysis is carried out (8) using pixel signals having a K-th spectral characteristic as the explanatory variable and pixel signals having an L-th spectral characteristic as the purpose variable in a plurality of pixel positions in an area neighboring a pixel of interest to obtain a pixel signal having the L-th spectral characteristic (9). Pixel signals obtained by low-pass filtering (7a-7c) of the output signals of an imaging device may be used as the explanatory variable and the purpose variable. The occurrence of false colors is thereby reduced when, in a group of pixel signals from pixels arrayed on a two-dimensional plane, each pixel having one of a plurality of spectral characteristics, the missing colors at each pixel position are obtained by interpolation.
    Type: Grant
    Filed: December 10, 2004
    Date of Patent: May 18, 2010
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Junko Makita, Shoutarou Moriya, Hiroaki Sugiura, Koichi Yamashita, Takashi Itow, Tetsuya Kuno
  • Patent number: 7663668
    Abstract: An imaging device has color signal generating means (20) for outputting first color signals (R5, G5, B5) corresponding to incident light, and matrix operation means (67) for performing a matrix calculation including multiplication of the first color signals, color signals obtained by raising the first color signals to a power with a first constant (i) as an exponent, color signals obtained by raising the first color signals to a power with a second constant (j) as an exponent, and corresponding matrix coefficients to obtain second color signals (R6, G6, B6). The first and second constants and the matrix coefficients are determined so that the total characteristics of the color signal generating means and the spectral sensitivity characteristic correction means (6) approximate human chromatic curves or spectral sensitivity curves obtained by a linear transformation thereof.
    Type: Grant
    Filed: January 14, 2005
    Date of Patent: February 16, 2010
    Assignee: Mitsubishi Electric Corporation
    Inventors: Tetsuya Kuno, Hiroaki Sugiura, Takashi Itow, Koichi Yamashita, Katsutoshi Sugiyama
  • Publication number: 20080278592
    Abstract: An imaging device has color signal generating means (20) for outputting first color signals (R5, G5, B5) corresponding to incident light, and matrix operation means (67) for performing a matrix calculation including multiplication of the first color signals, color signals obtained by raising the first color signals to a power with a first constant (i) as an exponent, color signals obtained by raising the first color signals to a power with a second constant (j) as an exponent, and corresponding matrix coefficients to obtain second color signals (R6, G6, B6). The first and second constants and the matrix coefficients are determined so that the total characteristics of the color signal generating means and the spectral sensitivity characteristic correction means (6) approximate human chromatic curves or spectral sensitivity curves obtained by a linear transformation thereof.
    Type: Application
    Filed: January 14, 2005
    Publication date: November 13, 2008
    Applicant: Mitsubishi Electric Corporation
    Inventors: Tetsuya Kuno, Hiroaki Sugiura, Takashi Itow, Koichi Yamashita, Katsutoshi Sugiyama
  • Publication number: 20080210297
    Abstract: Disclosed are a method for effectively preventing the contact between the surface of a titanium oxide semiconductor electrode and an electrolyte solution, a photoelectric conversion device exhibiting high photoelectric conversion efficiency, and a dye-sensitized solar cell using the said photoelectric conversion device. The photoelectric conversion device comprising a dye-sensitized semiconductor electrode is manufactured by letting a semiconductor adsorb a sensitizing dye, then rinsing the dye-adsorbed semiconductor, and finally letting the rinsed dye-adsorbed semiconductor adsorb a carboxylic acid in supercritical carbon dioxide. The adsorption of a dye and the rinsing are performed preferably in supercritical carbon dioxide in the presence or absence of an alcohol of 1-4 carbon atoms.
    Type: Application
    Filed: February 28, 2006
    Publication date: September 4, 2008
    Applicant: National University Corporation Kyushu Institute of Technology
    Inventors: Shuzi Hayase, Mitsuru Kono, Koichi Yamashita, Yoshihiro Yamaguchi
  • Publication number: 20080044708
    Abstract: The present invention provides a hydrocarbon-based polymer for use in an electrolyte membrane of a fuel cell having high durability, an electrolyte membrane of a fuel cell using the polymer, a fuel cell using the electrolyte membrane.
    Type: Application
    Filed: November 21, 2006
    Publication date: February 21, 2008
    Applicant: THE UNIVERSITY OF TOKYO
    Inventors: Takeo Yamaguchi, Jimmy Lawrence, Koichi Yamashita