Patents by Inventor Hiromu Tabata

Hiromu Tabata 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).

  • Automatic adjustment of biasing current for recording sound by three-head type tape-recorder
    Patent number: 4253122
    Abstract: A method and an apparatus for automatically establishing proper adjustment of recording bias current to obtain a flat reproduction frequency characteristic with a three-head type taperecorder in which sound recorded by a recorder head on a running magnetic tape may be immediately reproduced by a reproducer head immediately downstream of the recorder head.
    Type: Grant
    Filed: May 17, 1979
    Date of Patent: February 24, 1981
    Assignee: Onkyo Kabushiki Kaisha
    Inventor: Hiromu Tabata