Patents by Inventor Kenneth Arthur Haapala

Kenneth Arthur Haapala 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).

  • Near-field transducer efficiency monitoring system
    Patent number: 9396750
    Abstract: A system may have a data storage medium that contains at least one data bit that is accessed by a transducing head that has a near-field transducer. A controller can be connected to the transducing head and store a plurality of near-field transducer operating currents in a memory. The controller may identify a change in efficiency of the near-field transducer from the plurality of near-field transducer operating currents.
    Type: Grant
    Filed: September 14, 2015
    Date of Patent: July 19, 2016
    Assignee: Seagate Technology LLC
    Inventors: Alfredo Chu, Kenneth Arthur Haapala, Paul William Burnett, Siew Kin Chow
  • NEAR-FIELD TRANSDUCER EFFICIENCY MONITORING SYSTEM
    Publication number: 20150380040
    Abstract: A system may have a data storage medium that contains at least one data bit that is accessed by a transducing head that has a near-field transducer. A controller can be connected to the transducing head and store a plurality of near-field transducer operating currents in a memory. The controller may identify a change in efficiency of the near-field transducer from the plurality of near-field transducer operating currents.
    Type: Application
    Filed: September 14, 2015
    Publication date: December 31, 2015
    Inventors: Alfredo Chu, Kenneth Arthur Haapala, Paul William Burnett, Siew Kin Chow
  • Near-field transducer efficiency monitoring system
    Patent number: 9142244
    Abstract: A system may have a data storage medium that contains at least one data bit that is accessed by a transducing head that has a near-field transducer. A controller can be connected to the transducing head and store a plurality of near-field transducer operating currents in a memory. The controller may identify a change in efficiency of the near-field transducer from the plurality of near-field transducer operating currents.
    Type: Grant
    Filed: February 20, 2014
    Date of Patent: September 22, 2015
    Assignee: Seagate Technology LLC
    Inventors: Alfredo Sam Chu, Kenneth Arthur Haapala, Paul William Burnett, Siew Kin Chow
  • NEAR-FIELD TRANSDUCER EFFICIENCY MONITORING SYSTEM
    Publication number: 20150235665
    Abstract: A system may have a data storage medium that contains at least one data bit that is accessed by a transducing head that has a near-field transducer. A controller can be connected to the transducing head and store a plurality of near-field transducer operating currents in a memory. The controller may identify a change in efficiency of the near-field transducer from the plurality of near-field transducer operating currents.
    Type: Application
    Filed: February 20, 2014
    Publication date: August 20, 2015
    Applicant: Seagate Technology LLC
    Inventors: Alfredo Sam Chu, Kenneth Arthur Haapala, Paul William Burnett, Siew Kin Chow
  • Anticipatory track switching
    Patent number: 7885033
    Abstract: Various embodiments of the present invention are generally directed to using a transducer to transfer data during a transducer displacement operation at a time during such operation when the transducer is substantially stationary.
    Type: Grant
    Filed: November 9, 2007
    Date of Patent: February 8, 2011
    Assignee: Seagate Technology LLC
    Inventors: Reed David Hanson, Kenneth Arthur Haapala, Mark Larry Birtzer
  • ANTICIPATORY TRACK SWITCHING
    Publication number: 20090122442
    Abstract: Various embodiments of the present invention are generally directed to using a transducer to transfer data during a transducer displacement operation at a time during such operation when the transducer is substantially stationary.
    Type: Application
    Filed: November 9, 2007
    Publication date: May 14, 2009
    Applicant: Seagate Technology LLC
    Inventors: Reed David Hanson, Kenneth Arthur Haapala
  • Method and apparatus for reducing vibration in a dynamic system
    Patent number: 7046478
    Abstract: An apparatus and method for controlling a dynamic system is provided in which primary position control output signals are generated at a position measurement sampling frequency. Intermediate position control output signals are generated between the primary position control output signals as a function of the primary position control output signals.
    Type: Grant
    Filed: April 11, 2003
    Date of Patent: May 16, 2006
    Assignee: Seagate Technology LLC
    Inventors: Tao Zhang, Kenneth Arthur Haapala, John Christopher Morris