Patents by Inventor Akihiro Katahira

Akihiro Katahira 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).

  • Optical touch panel
    Patent number: 6836367
    Abstract: An optical touch panel is provided which includes a plurality of light-emitting elements, reflectors for reflecting the emitted light, and a plurality of light-receiving elements for receiving the reflected light. The plurality of light-emitting elements and the plurality of light-receiving elements are arranged alternately along each of first and second adjacent sides of a rectangular position-detecting surface, and the reflectors are arranged along each of third and fourth adjacent sides of the position-detecting surface. A drive controller causes the plurality of light emitting elements to light in a predetermined order to thereby cause respective ones of the light-receiving elements arranged on opposite sides of each of the plurality of light-emitting elements to receive the light reflected by the reflectors. Hollow cylinders opposed to the respective light-receiving elements inhibit light other than the light reflected by the reflectors from being incident on the plurality of light-receiving elements.
    Type: Grant
    Filed: February 24, 2003
    Date of Patent: December 28, 2004
    Assignee: Japan Aviation Electronics Industry, Limited
    Inventors: Takeshi Seino, Akihiro Katahira
  • Optical touch panel
    Publication number: 20030156332
    Abstract: An optical touch panel includes a plurality of light-emitting elements, reflectors for reflecting lights from the plurality of light-emitting elements, and a plurality of light-receiving elements for receiving reflected lights from the reflectors. The plurality of light-emitting elements and the plurality of light-receiving elements are arranged alternately along two adjacent sides of a rectangular position-detecting surface, and the reflectors are arranged along the other two adjacent sides of the position-detecting surface, respectively. A drive controller causes the plurality of light-emitting elements to light in a predetermined order to thereby cause ones of the light-receiving elements arranged on opposite sides of each of the plurality of light-emitting elements to receive reflected lights from the reflectors.
    Type: Application
    Filed: February 24, 2003
    Publication date: August 21, 2003
    Applicant: Japan Aviation Electronics Industry, Limited
    Inventors: Takeshi Seino, Akihiro Katahira
  • Optical touch panel having reduced number of elements
    Patent number: 6597508
    Abstract: An optical touch panel includes a plurality of light-emitting elements, reflectors for reflecting lights from the plurality of light-emitting elements, and a plurality of light-receiving elements for receiving reflected lights from the reflectors. The plurality of light-emitting elements and the plurality of light-receiving elements are arranged alternately along two adjacent sides of a rectangular position-detecting surface, and the reflectors are arranged along the other two adjacent sides of the position-detecting surface, respectively. A drive controller causes the plurality of light-emitting elements to light in a predetermined order to thereby cause ones of the light-receiving elements arranged on opposite sides of each of the plurality of light-emitting elements to receive reflected lights from the reflectors.
    Type: Grant
    Filed: February 28, 2001
    Date of Patent: July 22, 2003
    Assignee: Japan Aviation Electronics Industry, Limited
    Inventors: Takeshi Seino, Akihiro Katahira
  • Optical touch panel
    Publication number: 20020118461
    Abstract: An optical touch panel includes a plurality of light-emitting elements, reflectors for reflecting lights from the plurality of light-emitting elements, and a plurality of light-receiving elements for receiving reflected lights from the reflectors. The plurality of light-emitting elements and the plurality of light-receiving elements are arranged alternately along two adjacent sides of a rectangular position-detecting surface, and the reflectors are arranged along the other two adjacent sides of the position-detecting surface, respectively. A drive controller causes the plurality of light-emitting elements to light in a predetermined order to thereby cause ones of the light-receiving elements arranged on opposite sides of each of the plurality of light-emitting elements to receive reflected lights from the reflectors.
    Type: Application
    Filed: February 28, 2001
    Publication date: August 29, 2002
    Applicant: Japan Aviation Electronics Industry, Limited
    Inventors: Takeshi Seino, Akihiro Katahira