Patents by Inventor Dave McMurtrey

Dave McMurtrey 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).

  • Patent number: 7667919
    Abstract: A system for generating resonance mode information associated with a servo track writer system comprising a drive VCM, a drive arm assembly, an external VCM, an external arm assembly, and a mechanical connection between the external arm assembly and the drive arm assembly. The system of the present invention comprises a controller, a position sensor, and a processor. The controller is adapted to apply an injection signal to the drive VCM such that the injection signal causes movement of the external arm assembly through the drive arm assembly and the pushpin. The position sensor is configured to generate an output signal indicative of a position of the external arm assembly. The processor generates the resonance mode information based on the injection signal and the output signal.
    Type: Grant
    Filed: October 2, 2006
    Date of Patent: February 23, 2010
    Assignee: Seagate Technology LLC
    Inventors: Brian Rigney, Konrad Kummli, Dave McMurtrey
  • Patent number: 7551387
    Abstract: In accordance with various embodiments, a rotatable member is mounted to a spindle hub so that initial servo data previously provided to the rotatable member are eccentrically offset with respect to a rotational center of the spindle hub. Compensation vales are determined to characterize said offset, after which final servo data are provided to the rotatable member in relation to the initial servo data and the determined compensation values. The final servo data are nominally concentric with the rotational center of the spindle hub.
    Type: Grant
    Filed: April 26, 2007
    Date of Patent: June 23, 2009
    Assignee: Maxtor Corporation
    Inventors: Yu Sun, Dave McMurtrey, Bruce Liikanen, Don Brunnett, John W. VanLaanen, Charles R. Watt, Stan Shepherd, S. Craig Smith, Todd Franks, Lin Guo
  • Patent number: 7474492
    Abstract: Various embodiments of the present invention are generally directed to detecting a fixed mechanical reference adjacent a storage medium using a v-shaped pattern written to the medium.
    Type: Grant
    Filed: May 22, 2007
    Date of Patent: January 6, 2009
    Assignee: Maxtor Corporation
    Inventor: Dave McMurtrey
  • Publication number: 20080030894
    Abstract: In accordance with various embodiments, a rotatable member is mounted to a spindle hub so that initial servo data previously provided to the rotatable member are eccentrically offset with respect to a rotational center of the spindle hub. Compensation vales are determined to characterize said offset, after which final servo data are provided to the rotatable member in relation to the initial servo data and the determined compensation values. The final servo data are nominally concentric with the rotational center of the spindle hub.
    Type: Application
    Filed: April 26, 2007
    Publication date: February 7, 2008
    Applicant: Maxtor Corporation
    Inventors: YU SUN, Dave McMurtrey, Bruce Liikanen, Don Brunnett, John VanLaanen, Charles Watt, Stanley Shepherd, S. Smith, Todd Franks, Lin Guo
  • Publication number: 20080013203
    Abstract: Various embodiments of the present invention are generally directed to detecting a fixed mechanical reference adjacent a storage medium using a v-shaped pattern written to the medium.
    Type: Application
    Filed: May 22, 2007
    Publication date: January 17, 2008
    Applicant: Maxtor Corporation
    Inventor: Dave McMurtrey
  • Patent number: 7133239
    Abstract: Methods and apparatuses for writing spiral servo patterns on a disk surface are disclosed. In one embodiment, a method is provided to write servo information onto a disk surface in spiral patterns in a non-sequential manner. In another embodiment, a thermal warm-up regimen is performed prior to writing spiral patterns onto the disk surface. In another embodiment, a reference track is used to position a write head when writing spiral patterns onto the disk surface. By using one or more of the above embodiments, the affects of thermal and/or mechanical changes may be reduced when writing spiral patterns.
    Type: Grant
    Filed: February 26, 2004
    Date of Patent: November 7, 2006
    Assignee: Maxtor Corporation
    Inventors: Allen P. Hartman, Bruce A. Liikanen, Dave McMurtrey