Patents by Inventor Jerry Moline

Jerry Moline 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).

  • Publication number: 20080165443
    Abstract: The present disclosure is directed to systems and methods of compensating for thermal decay of a magnetic data storage medium. In a particular embodiment, the method includes reading a calibration track on a magnetic data storage medium to obtain a first measurement of a track characteristic. The method also includes overwriting the calibration track with a first specific data pattern and reading the calibration track to obtain a second measurement of the track characteristic. The method also includes determining whether a thermal decay rate of the calibration track is acceptable based on the first measurement and the second measurement.
    Type: Application
    Filed: January 9, 2007
    Publication date: July 10, 2008
    Applicant: SEAGATE TECHNOLOGY, LLC
    Inventor: Jerry Moline
  • Patent number: 7352525
    Abstract: Data recovery, following a read error in a hard disk drive, is provided which includes an adjustment of fly height. In one embodiment, some re-reads are performed by both adjusting the fly height and the off-track positioning of the read head. In one embodiment, two or more fly heights are normally used during read/write operations such as in a zoned manner, and adjustments to fly heights are performed with respect to the fly height for the zone where the error occurred.
    Type: Grant
    Filed: June 7, 2006
    Date of Patent: April 1, 2008
    Assignee: Maxtor Corporation
    Inventors: Rajita Shrestha, Christine Green, Jerry Moline
  • Patent number: 7212361
    Abstract: A disk drive provides temperature compensation for write current. The write current not only provides an acceptable bit error rate for data written to and read from the disk, but also prevents write induced instability in the head. Furthermore, the write current prevents excessive pole tip protrusion. As a result, the write current ensures that data is reliably stored and retrieved at a given temperature.
    Type: Grant
    Filed: December 20, 2001
    Date of Patent: May 1, 2007
    Assignee: Maxtor Corporation
    Inventors: Richard Pederson, Dale Landgren, Jerry Moline, David Rewerts
  • Patent number: 7027251
    Abstract: A method and apparatus to control the amount by which thermal expansion causes a write head to extend toward a disk is provided. In one aspect, a single write operation uses two or more different write currents. A first write current is initially used, and is large enough to achieve desired magnetic flux at the disk. After the write current heats and expands the arm tip, and extends it toward the disk surface, the write current is reduced, to avoid or postpone the time at which thermal expansion might cause the tip to contact the disk, or cause other undesirable effects.
    Type: Grant
    Filed: January 6, 2003
    Date of Patent: April 11, 2006
    Assignee: Maxtor Corporation
    Inventors: Neil Darragh, Jerry Moline, Bruce Emo
  • Patent number: 6883126
    Abstract: An adaptive error recovery routine allows for the recovery from errors in read data of a disk drive. In one embodiment, a disk drive is provided which has an error memory having error memory elements used to record an error type and recovery step for each error recovered from the disk drive. If another error is detected that is of the same type and which is in a location close to a recorded error, the error recovery step used for the previous error is performed for the new error. If the previous error recovery step is not successful, the disk drive performs error recovery using an existing error recovery table, and omits the previous error recovery step.
    Type: Grant
    Filed: November 7, 2001
    Date of Patent: April 19, 2005
    Assignee: Maxtor Corporation
    Inventors: Lace J. Herman, Jerry Moline