Patents by Inventor Keiichiro Tsuruoka

Keiichiro Tsuruoka 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).

  • Constant speed reel driven magnetic tape in cue or review mode
    Patent number: 4472749
    Abstract: A magnetic tape reproducing apparatus in a rotary head VTR is arranged such that when reels are rotatably driven to perform a cue play and a review play, the speed of a motor driving the reels is controlled by a speed control of the motor itself and in accordance with a control signal reproduced from a magnetic tape, thereby making the speed of the magnetic tape approximately constant during the cue play and the review play.
    Type: Grant
    Filed: November 17, 1981
    Date of Patent: September 18, 1984
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Mineo Mino, Kazuhiro Yamanishi, Keiichiro Tsuruoka