Patents by Inventor Kazuhiko Akebi

Kazuhiko Akebi 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: 6353434
    Abstract: A control program designates two-dimensional coordinates in an image-displaying two-dimensional coordinate system and displays four mark images on a display screen. A touch panel obtains two-dimensional coordinates in a two-dimensional coordinate system inherent in the touch panel according to user operation corresponding to the four mark images. A touch-panel device driver obtains the coefficients in predetermined coordinate transformation expressions according to the two kinds of four coordinates, and performs coordinate transformation using the coordinate transformation expressions to convert two-dimensional coordinates in the touch-panel-inherent two-dimensional coordinate system that have been transmitted from the touch panel into two-dimensional coordinates in the image-displaying two-dimensional coordinate system and transfer the converted coordinates to an operating system.
    Type: Grant
    Filed: August 2, 1999
    Date of Patent: March 5, 2002
    Assignee: Gunze Limited
    Inventors: Kazuhiko Akebi, Shinya Nishihara, Minoru Okabe
  • Patent number: 5496974
    Abstract: In an apparatus for detecting a coordinate position of a contact point in a touch panel, a resistance layer having a pair of electrodes opposed in a X direction and another resistance layer having a pair of electrodes opposed in a Y direction are opposed in a Z direction. The apparatus includes the following units. A unit for applying a voltage to the pair of electrodes of one resistance layer when the apparatus is in an input stand-by state. A resistance connecting an electrode of the other resistance layer to earth when the apparatus is in the input stand-by state. A unit for detecting a voltage induced to the other electrode of the other resistance layer when the resistance layers contact with each other in an event of a depressing operation. A unit for controlling the transition from the input stand-by state to another state in which an operation for detecting the coordination position is executed, when the voltage is induced to the other electrode of the other resistance layer.
    Type: Grant
    Filed: May 6, 1994
    Date of Patent: March 5, 1996
    Assignee: Gunze Limited
    Inventors: Kazuhiko Akebi, Kensuke Taki
  • Patent number: 5181030
    Abstract: An input system including a resistance film touch panel and a pushed position detecting device for detecting two-dimensional coordinates of a pushed position of a touch panel based on surface resistance values of resistance films, the system comprising a pair of insulating base layers opposed to each other with a certain distance therebetween; a spacer provided between the insulating base layers for keeping the layers apart but for allowing the layers to approach each other when an external force is applied to one of the layers; a first resistance film extended in first and second directions and provided on an inner surface of one of the layers, the first and second directions crossing each other perpendicularly and the first resistance film having outer connecting electrodes on both ends thereof along the second direction; and a plurality of second resistance films provided on an inner surface of the other of the layers, the second resistance films each being a lengthy strip extended in a direction crossing
    Type: Grant
    Filed: November 16, 1990
    Date of Patent: January 19, 1993
    Assignee: Gunze Limited
    Inventors: Hisao Itaya, Kazuhiko Akebi, Minoru Okabe, Satoru Nakagawa
  • Patent number: 4897511
    Abstract: In a method of detecting a contacting position using a touch panel, a pair of resistance layers formed on two substrates are opposed with a gap. At least one conduction member is provided on one edge of one of the resistance layers and another conduction member is provided on one edge of another resistance layer which extends in a direction perpendicular to the edge of said one of the resistance layer. A constant current source is connected to one conduction member so that when the resistance layers contact at a contacting position, a constant current flows from the conduction member of one of the resistance layers to the conduction member of said another resistance layer through the contacting point. Thus, the coordinate position of the contacting point can be detected by the voltage drops on the respective resistance layers.
    Type: Grant
    Filed: June 16, 1988
    Date of Patent: January 30, 1990
    Assignee: Gunze Limited
    Inventors: Hisao Itaya, Kazuhiko Akebi, Minoru Okabe
  • Patent number: 4861409
    Abstract: The invention provides a process and an apparatus for laminating a film 1 and a film 2 by thermocompression bonding.When the film 1 and the film 2 are laminated by thermocompressing bonding with a heat roll 3 and a pressure roll 4, the film 1 is guided onto the heat roll 3 via a feed angle adjusting roll 5 for automatically adjusting the distance of contact of the film with the heat roll 3, and/or the laminate film formed by thermocompression bonding is released from the heat roll 3 by being passed over a discharge angle adjusting roll 8 for automatically adjusting the distance of contact of the laminate film with the heat roll.
    Type: Grant
    Filed: October 30, 1987
    Date of Patent: August 29, 1989
    Assignee: Gunze Kabushiki Kaisha
    Inventors: Kenji Hashida, Takeshi Yamamoto, Tatsuya Fukumoto, Tetsuji Deguchi, Shigeyuki Hirata, Osamu Uehara, Kazuhiko Akebi