Patents by Inventor Andrei F. Khapikov

Andrei F. Khapikov 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).

  • Setting an operating bias current for a magnetoresistive head by computing a target operating voltage
    Patent number: 7872824
    Abstract: A disk drive is disclosed having a disk, and a head actuated over the disk, the head comprising a magnetoresistive (MR) element. Control circuitry within the disk drive sets an operating bias current for the MR element by computing a target voltage for the MR element, applying a bias current to the MR element, measuring a voltage across the MR element corresponding to the bias current, and adjusting the bias current applied to the MR element until the measured voltage substantially equals the target voltage.
    Type: Grant
    Filed: June 11, 2007
    Date of Patent: January 18, 2011
    Assignee: Western Digital (Fremont), LLC
    Inventors: Curtis V. Macchioni, Jonas A. Goode, Matthew R. Gibbons, Tao Pan, Andrei F. Khapikov