Patents by Inventor Kouji Miyawaki

Kouji Miyawaki 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: 9497805
    Abstract: An organic EL element driving device that drives an organic EL element with a constant current is provided. The organic EL element driving device includes a power supply connected in series with the organic EL element, and a current control unit connected in series with the organic EL element. The current control unit includes a current detection circuit having a resistor for detecting the value of the current passing through the organic EL element. The current control unit sets a prescribed value for the current to be passed through the organic EL element in accordance with the luminance control, and performs control such that the current passing through the organic EL element has the prescribed value in accordance with an output from the current detection circuit. A value of the resistor in the current detection circuit is varied in accordance with the luminance control.
    Type: Grant
    Filed: June 13, 2011
    Date of Patent: November 15, 2016
    Assignee: KONICA MINOLTA HOLDINGS, INC.
    Inventors: Tsukasa Yagi, Kouichi Ishida, Yuichi Iketsu, Kouji Miyawaki
  • Publication number: 20130088174
    Abstract: An organic EL element driving device that drives an organic EL element with a constant current is provided. The organic EL element driving device includes a power supply connected in series with the organic EL element, and a current control unit connected in series with the organic EL element. The current control unit includes a current detection circuit having a resistor for detecting the value of the current passing through the organic EL element. The current control unit sets a prescribed value for the current to be passed through the organic EL element in accordance with the luminance control, and performs control such that the current passing through the organic EL element has the prescribed value in accordance with an output from the current detection circuit. A value of the resistor in the current detection circuit is varied in accordance with the luminance control.
    Type: Application
    Filed: June 13, 2011
    Publication date: April 11, 2013
    Inventors: Tsukasa Yagi, Kouichi Ishida, Yuichi Iketsu, Kouji Miyawaki
  • Patent number: 7260266
    Abstract: There are described an image processing method, an image processing apparatus, an image processing program and an image recording apparatus characterized by reduced computation loads and capable of suppressing the mottled granular noise contained in color image signals and enhancing the sharpness of the image, without generating noises similar to color misregistration and false color contour appearing close to the edge.
    Type: Grant
    Filed: September 23, 2003
    Date of Patent: August 21, 2007
    Assignee: Konica Corporation
    Inventors: Takeshi Nakajima, Tsukasa Ito, Kouji Miyawaki
  • Patent number: 7202485
    Abstract: A radiation image conversion panel exhibiting enhanced luminance and superior sharpness is disclosed, comprising on a support a stimulable phosphor layer, wherein the stimulable phosphor layer which has been formed by gas phase deposition has a thickness of 50 ?m to 1 mm, and a protective layer composed of a thermosetting resin or a thermoplastic resin is further provided on the stimulable phosphor layer.
    Type: Grant
    Filed: November 11, 2004
    Date of Patent: April 10, 2007
    Assignee: Konica Minolta Medical & Graphic, Inc.
    Inventors: Akihiro Maezawa, Kouji Miyawaki, Noriyuki Mishina
  • Publication number: 20050104009
    Abstract: A radiation image conversion panel exhibiting enhanced luminance and superior sharpness is disclosed, comprising on a support a stimulable phosphor layer, wherein the stimulable phosphor layer which has been formed by gas phase deposition has a thickness of 50 ?m to 1 mm, and a protective layer composed of a thermosetting resin or a thermoplastic resin is further provided on the stimulable phosphor layer.
    Type: Application
    Filed: November 11, 2004
    Publication date: May 19, 2005
    Inventors: Akihiro Maezawa, Kouji Miyawaki, Noriyuki Mishina
  • Publication number: 20040213477
    Abstract: There is described an image-processing method for applying a predetermined image processing to image signals, to output processed image signals. The method includes the steps of: applying a first processing for increasing a signal intensity deviation to a first-objective pixel, which is included in objective pixels having a spatial frequency in a range of 1.5-3.0 lines/mm, and whose signal intensity deviation is in a range of 30-60% of a maximum signal intensity deviation; and applying a second processing for decreasing the signal intensity deviation or keeping the signal intensity deviation as it is to a second-objective pixel, which is included in objective pixels having a spatial frequency in a range of 0.7-3.0 lines/mm, and whose signal intensity deviation is in a range of 0-6% of the maximum signal intensity deviation. The first processing includes a sharpness-enhancement processing, while the second processing includes a noise-reduction processing.
    Type: Application
    Filed: April 14, 2004
    Publication date: October 28, 2004
    Applicant: Konica Minolta Photo Imaging, Inc.
    Inventors: Takeshi Nakajima, Tsukasa Ito, Kouji Miyawaki
  • Publication number: 20040066850
    Abstract: There are described an image processing method, an image processing apparatus, an image processing program and an image recording apparatus characterized by reduced computation loads and capable of suppressing the mottled granular noise contained in color image signals and enhancing the sharpness of the image, without generating noises similar to color misregistration and false color contour appearing close to the edge.
    Type: Application
    Filed: September 23, 2003
    Publication date: April 8, 2004
    Applicant: Konica Corporation
    Inventors: Takeshi Nakajima, Tsukasa Ito, Kouji Miyawaki
  • Publication number: 20040057617
    Abstract: There is described a method for providing processed image data to a client, who requests an image-processing service from an image-processing service provider. The processed image data are generated by processing an original image submitted by the client as an object of the image-processing service. The method includes the steps of acquiring original image data, which include expanded color-range image data, from the original image; determining a first optimizing condition for generating output-referred image data from device characteristic data in respect to the output device, in order to generate optimizing condition data; storing the original image data including the expanded color-range image data and the optimizing condition data, while correlating them; and providing the original image data including the expanded color-range image data and the first optimizing condition data, stored in the storing step, to the client, based on a providing procedure established in advance.
    Type: Application
    Filed: September 15, 2003
    Publication date: March 25, 2004
    Applicant: Konica Corporation
    Inventors: Kouji Miyawaki, Tsukasa Ito, Takeshi Nakajima, Hiroaki Takano, Chizuko Ikeda, Yumiko Nakatsuru