Patents by Inventor Hidetaka Kadowaki

Hidetaka Kadowaki 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 recording and reproducing device
    Patent number: 4297730
    Abstract: This invention relates to a magnetic recording and reproducing device in which automatic settings of optimum recording bias current, optimum recording level and optimum recording equalization characteristic are successively accomplished in this order. The settings of the optimum recording conditions are achieved with high accuracy within short period of time by a computer control using a microprocessor.
    Type: Grant
    Filed: November 1, 1979
    Date of Patent: October 27, 1981
    Assignee: Pioneer Electronic Corporation
    Inventors: Hidetaka Kadowaki, Akira Inomata, Kiyoshi Yanagida, Tsunao Hasegawa, Satoshi Ishii, Yasushi Ohtake