Patents by Inventor Yoshihasa Kamo

Yoshihasa Kamo 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).

  • Readout circuit in magnetic recording device
    Patent number: 4907100
    Abstract: A readout circuit in magnetic recording device is disclosed, in which a test data signal for detecting an error in the characteristics of an automatic equalizer is recorded in a predetermined position of each track of a magnetic recording medium. In readout mode, a test data signal for a selected track is read out first, and this signal is compared with a reference signal dependent on the system conditions to determine an error from the reference signal. The optimum equalization coefficient is determined to eliminate this error from the reference signal and is set in the equalizer. The data is readout under the optimum equalization characteristics thus set.
    Type: Grant
    Filed: September 23, 1988
    Date of Patent: March 6, 1990
    Assignee: Hitachi, Ltd.
    Inventors: Nobumasa Nishiyama, Makoto Saito, Yasuhide Ouchi, Yasuhiro Katoh, Yoshihasa Kamo, Makoto Koizumi, Hajime Aoi, Naoki Sato, Reijiro Tsuchiya