Patents by Inventor Shigeki Obata

Shigeki Obata 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).

  • Surface shape sensor, identification device using this sensor, and protected system using this device
    Patent number: 5745046
    Abstract: A device for performing identification by sensing the fingerprint of a finger includes an input unit. The input unit is constituted by a plurality of linear contact electrodes formed on a substrate, and a pressure-sensitive sheet formed on the linear contact electrodes and a resistance thereof changes in accordance with a pressure applied thereto. When the finger touches the surface of the pressure-sensitive sheet, a change in resistance is caused between the electrodes, and this change is converted to data of a one-dimensional electrical signal distribution. The obtained data is compared with registered data, thereby performing identification. The time required for signal processing necessary in the identification device can be decreased.
    Type: Grant
    Filed: July 10, 1996
    Date of Patent: April 28, 1998
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kazuhiro Itsumi, Masayuki Shiratori, Tatsuro Beppu, Shiroh Saitoh, Yujiro Naruse, Shigeki Obata, Shunji Shirouzu
  • Surface shape sensor, identification device using this sensor, and protected system using this device
    Patent number: 5559504
    Abstract: A device for performing identification by sensing the fingerprint of a finger includes an input unit. The input unit is constituted by a plurality of linear contact electrodes formed on a substrate, and a pressure-sensitive sheet formed on the linear contact electrodes and a resistance thereof changes in accordance with a pressure applied thereto. When the finger touches the surface of the pressure-sensitive sheet, a change in resistance is caused between the electrodes, and this change is converted to data of a one-dimensional electrical signal distribution. The obtained data is compared with registered data, thereby performing identification. The time required for signal processing necessary in the identification device can be decreased.
    Type: Grant
    Filed: January 7, 1994
    Date of Patent: September 24, 1996
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kazuhiro Itsumi, Masayuki Shiratori, Tatsuro Beppu, Shiroh Saitoh, Yujiro Naruse, Shigeki Obata, Shunji Shirouzu