Patents by Inventor Masao Iijima

Masao Iijima 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: 20060244499
    Abstract: A spread spectrum clock generation circuit capable of further reducing the electromagnetic wave radiation with a simple configuration has been disclosed and, particularly in a spread spectrum clock generation circuit using a current control oscillator (ICO), a differential signal to which a spread spectrum modulation signal, the period or amplitude of which changes, is added is generated, and the differential signal is applied to the ICO and a clock is generated.
    Type: Application
    Filed: June 28, 2006
    Publication date: November 2, 2006
    Inventors: Shinji Miyata, Kouji Okada, Masao Iijima, Yukisato Miyazaki
  • Patent number: 7095260
    Abstract: A spread spectrum clock generation circuit capable of further reducing the electromagnetic wave radiation with a simple configuration has been disclosed and, particularly in a spread spectrum clock generation circuit using a current control oscillator (ICO), a differential signal to which a spread spectrum modulation signal, the period or amplitude of which changes, is added is generated, and the differential signal is applied to the ICO and a clock is generated.
    Type: Grant
    Filed: September 2, 2005
    Date of Patent: August 22, 2006
    Assignee: Fujitsu Limited
    Inventors: Shinji Miyata, Kouji Okada, Masao Iijima, Teruhiko Saitou, Yukisato Miyazaki
  • Publication number: 20050285641
    Abstract: A spread spectrum clock generation circuit capable of further reducing the electromagnetic wave radiation with a simple configuration has been disclosed and, particularly in a spread spectrum clock generation circuit using a current control oscillator (ICO), a differential signal to which a spread spectrum modulation signal, the period or amplitude of which changes, is added is generated, and the differential signal is applied to the ICO and a clock is generated.
    Type: Application
    Filed: September 2, 2005
    Publication date: December 29, 2005
    Inventors: Shinji Miyata, Kouji Okada, Masao Iijima, Teruhiko Saitou, Yukisato Miyazaki
  • Patent number: 6975148
    Abstract: A spread spectrum clock generation circuit capable of further reducing the electromagnetic wave radiation with a simple configuration has been disclosed and, particularly in a spread spectrum clock generation circuit using a current control oscillator (ICO), a differential signal to which a spread spectrum modulation signal, the period or amplitude of which changes, is added is generated, and the differential signal is applied to the ICO and a clock is generated.
    Type: Grant
    Filed: December 23, 2003
    Date of Patent: December 13, 2005
    Assignee: Fujitsu Limited
    Inventors: Shinji Miyata, Kouji Okada, Masao Iijima, Teruhiko Saitou, Yukisato Miyazaki
  • Publication number: 20040136440
    Abstract: A spread spectrum clock generation circuit capable of further reducing the electromagnetic wave radiation with a simple configuration has been disclosed and, particularly in a spread spectrum clock generation circuit using a current control oscillator (ICO), a differential signal to which a spread spectrum modulation signal, the period or amplitude of which changes, is added is generated, and the differential signal is applied to the ICO and a clock is generated.
    Type: Application
    Filed: December 23, 2003
    Publication date: July 15, 2004
    Applicant: FUJITSU LIMITED
    Inventors: Shinji Miyata, Kouji Okada, Masao Iijima, Teruhiko Saitou, Yukisato Miyazaki
  • Patent number: 6751276
    Abstract: A method of decoding a digital signal includes processing the digital using a delay operation in accordance with a frequency characteristic of 1+D, where D is an output signal of the delay element. The processed digital signal is then converted to a three level conversion signal (0, positive, negative). The conversion signal is then processed in accordance with a frequency of 1/(1+D) to generate a decoded signal. The conversion signal is also checked to determine if there is a conversion error. If a conversion error is detected, propagation of the error is restricted, such that a correct decoded signal is provided.
    Type: Grant
    Filed: March 27, 2000
    Date of Patent: June 15, 2004
    Assignee: Fujitsu Limited
    Inventors: Koji Okada, Masao Iijima
  • Patent number: 5804174
    Abstract: A deodorizer comprises a hydrophilic solvent extract of fruit-bodies of champignon mushroom or powder of the extract as an effective component. The extract of champignon mushroom used as an effective component can be prepared by a method which comprises the step of immersing the mushroom in a hydrophilic solvent at a temperature ranging from 60.degree. to 1000.degree. C. for 15 minutes to 2 hours to perform extraction. The extract can further be treated to obtain the effective components in the form of powder.
    Type: Grant
    Filed: December 31, 1996
    Date of Patent: September 8, 1998
    Assignees: Ricom Corporation, Zeria Pharmaceuticals, Mitsui & Company Ltd.
    Inventors: Sadami Ishibashi, Tadao Hamaya, Tadashi Imai, Masao Iijima
  • Patent number: 5639470
    Abstract: A deodorizer comprises a hydrophilic solvent extract of fruit-bodies of champignon mushroom or powder of the extract as an effective component. The extract of champignon mushroom used as an effective component can be prepared by a method which comprises the step of immersing the mushroom in a hydrophilic solvent at a temperature ranging from 60.degree. to 100.degree. C. for 15 minutes to 2 hours to perform extraction. The extract can further be treated to obtain the effective components in the form of powder.
    Type: Grant
    Filed: August 16, 1993
    Date of Patent: June 17, 1997
    Assignees: Ricom Corp, Zeria Pharmaceutical Co. Ltd., Mitsui & Co.
    Inventors: Sadami Ishibashi, Tadao Hamaya, Tadashi Imai, Masao Iijima
  • Patent number: 4610891
    Abstract: A process for sugar-coating a solid preparation such as tablet, pill, granule or grain with a sugar-coating liquid comprising pullulan and/or a water-soluble derivative thereof dissolved in an aqueous solution of sucrose. The solid preparation sugar-coated by the above-mentioned process exhibits an enhanced impact strength and shelf life.
    Type: Grant
    Filed: November 25, 1985
    Date of Patent: September 9, 1986
    Assignee: Zeria Shinyaku Kogyo Kabushiki Kaisha
    Inventors: Yosuke Miyamoto, Hajime Goto, Hiroshi Sato, Hiroshi Okano, Masao Iijima
  • Patent number: 4570030
    Abstract: A solar cell device in which short-circuiting between a connecting portion of a metal electrode and a transparent electrode of each cell unit is prevented. A plurality of cell units are formed by laminating a transparent electrode, an amorphous silicon layer and a metal electrode disposed on a common transparent substrate, with each two adjacent cell units being connected by an extension of the metal electrode which traverses an edge of the amorphous silicon layer of the cell unit and contacts the exposed extension of the transparent electrode of the adjacent unit. The edge of the amorphous silicon layer traversed by the extension of the metal electrode projects beyond the transparent electrode by a distance significantly greater than the distance between the edges of the amorphous silicon layer and the transparent electrode in the main portion of the cell unit.
    Type: Grant
    Filed: April 26, 1984
    Date of Patent: February 11, 1986
    Assignee: Fuji Electric Company Ltd.
    Inventors: Yoshiyuki Umemoto, Masao Iijima, Masahide Miyagi, Yoshihisa Muramatsu