Patents by Inventor Akira Utsui

Akira Utsui 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).

  • Magnetic card recording/reproducing apparatus and method
    Patent number: 6141161
    Abstract: According to the presents invention, there are provided a magnetic card recording/reproducing apparatus comprising a coercive force identifier for identifying the coercive force of a magnetic card before magnetic information is recorded in the magnetic card, and an exciting current selector for selecting one of plural preset exciting current values as exciting current to be supplied to a recording magnetic head on the basis of the identification result of the coercive force identifier to record the magnetic information, and a magnetic card recording/reproducing method for recording/reproducing magnetic information in a magnetic card, which comprises the steps of: identifying the coercive force of the magnetic card before magnetic information is recorded in the magnetic card, and selecting one of plural predetermined exciting current values as exciting current to be supplied to a recording magnetic head for recording the magnetic information in the magnetic card on the basis of the identification result of the
    Type: Grant
    Filed: September 14, 1998
    Date of Patent: October 31, 2000
    Assignee: Neuron Corporation
    Inventors: Hitoshi Sato, Shinichi Akiyama, Akira Utsui