Patents by Inventor Teruo Narushima

Teruo Narushima 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).

  • Variable speed magnetic medium recording and playback apparatus
    Patent number: 4930024
    Abstract: A variable speed magnetic medium recording and playback apparatus for reproducing signals prerecorded in defined tracks on a magnetic recording medium by cyclical helical scanning and generating an output video signal subject to noise when more than one track is scanned in a single cycle. The magnetic reproducing apparatus includes a variable speed rotary head for helically scanning the prerecorded signals on the recording medium, a variable speed drive device or a capstan device for moving the recording medium in relation to the rotary head, and a circuit for controlling the speed of the rotary head in correspondence with changes in the speed of the variable speed drive device for reducing noise in the output signal of the apparatus.
    Type: Grant
    Filed: March 25, 1987
    Date of Patent: May 29, 1990
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Shuhei Kanda, Mitugu Hirota, Teruo Narushima