Patents by Inventor Masako Kanda

Masako Kanda 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/or reproducing apparatus having single head with two gaps and providing different lead angles in different operating states
    Patent number: 5089918
    Abstract: In a magnetic recording and/or reproducing apparatus of a rotary head type, a magnetic head having two gaps of different azimuth angles is installed on the rotary drum and a switching signal, the polarity of which is inverted every rotation of the rotary drum is generated. The duty of the switching signal is adjusted so as to correspond to a time-difference between the two gaps of the above head. The timings of the recording operation and the reproducing operation to be performed by the magnetic head are controlled on the basis of the above adjusted switching signal.
    Type: Grant
    Filed: May 15, 1989
    Date of Patent: February 18, 1992
    Assignee: Casio Computer Co., Ltd.
    Inventors: Ryuichi Hirayama, Susumu Takashima, Masako Kanda, Noriyasu Murata