Patents by Inventor Koichi Hayamizu

Koichi Hayamizu 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).

  • Noncontact IC card interface unit and communication system using the interface unit
    Patent number: 5664157
    Abstract: An interface unit includes an interface controller for controlling a bidirectional signal relative to an external host computer, a communication controller for controlling data communication with a noncontact IC card according to an output signal sent from the host computer, and a memory accessible by both the interface controller and communication controller. A noncontact IC card is very useful because of its accessibility at a remote place. A connector of the noncontact IC card can be protected from mechanical damage. With the interface unit, the noncontact IC card can be accessed as quickly as a contact IC card is.
    Type: Grant
    Filed: March 30, 1995
    Date of Patent: September 2, 1997
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Kenichi Takahira, Koichi Hayamizu