Patents by Inventor Mike E. Baum

Mike E. Baum 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).

  • Dynamic head switch timing recalibration apparatus and method
    Patent number: 6917485
    Abstract: An apparatus and method for dynamic head switch timing recalibration are provided. With the apparatus and method, a determination is made as to whether a difference in a reference head switch timing and the head switch timing at a later time is sufficient to meet a certain criteria. If the difference meets the criteria, a recalibration of the head switch timing is performed. For example, in a preferred embodiment, the criteria is a number of address mark (AM) misses during a head switch operation. If this predetermined number of AM misses is detected, then it is determined that a recalibration is necessary since the predetermined number of AM misses is an indication that the head switch timing has changed significantly from the reference head switch timing.
    Type: Grant
    Filed: June 20, 2003
    Date of Patent: July 12, 2005
    Assignee: Seagate Technology LLC
    Inventors: David Louis Schell, Chris Thomas Settje, Steven Alan Koldewyn, Kar Wei Koay, Abhay T. Kataria, Marinko Bosnich, Mike E. Baum
  • Dynamic head switch timing recalibration apparatus and method
    Publication number: 20040150904
    Abstract: An apparatus and method for dynamic head switch timing recalibration are provided. With the apparatus and method, a determination is made as to whether a difference in a reference head switch timing and the head switch timing at a later time is sufficient to meet a certain criteria. If the difference meets the criteria, a recalibration of the head switch timing is performed. For example, in a preferred embodiment, the criteria is a number of address mark (AM) misses during a head switch operation. If this predetermined number of AM misses is detected, then it is determined that a recalibration is necessary since the predetermined number of AM misses is an indication that the head switch timing has changed significantly from the reference head switch timing.
    Type: Application
    Filed: June 20, 2003
    Publication date: August 5, 2004
    Inventors: David Louis Schell, Chris Thomas Settje, Steven Alan Koldewyn, KarWei Koay, Abhay T. Kataria, Marinko Bosnich, Mike E. Baum
  • Closed-loop scaling for discrete-time servo controller in a disc drive
    Patent number: 6414827
    Abstract: A method of configuring a discrete-time servo controller in a fixed-point digital signal processor (DSP) for controlling a servo actuator in a disc drive includes obtaining a stable, closed-loop representation of the servo controller and the servo actuator. Bounds on the controller states are derived from the stable closed-loop representation. The controller states are scaled based on the controller state bounds, and the servo controller is configured in the DSP based on the scaled controller states.
    Type: Grant
    Filed: December 30, 1999
    Date of Patent: July 2, 2002
    Assignee: Seagate Technology LLC
    Inventors: Peter M. Young, John C. Morris, Mike E. Baum