Patents by Inventor Jesse Speckhard

Jesse Speckhard 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).

  • In Situ Sensor Based Contact Detection
    Publication number: 20140268406
    Abstract: Apparatus and method for positional sensing and control. In accordance with some embodiments, a transducer is positioned adjacent a recording medium. The transducer includes a write element, a read element, a heater and a thermally responsive sensor. Power is applied to the heater to establish a selected fly height of the transducer relative to the medium. A contact event between the transducer and the medium is detected responsive to an accumulated plural count of pulses in a bias signal obtained from the thermally responsive sensor.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Inventors: CheeWee Cheng, Subhash Guddati, ShengYuan Lin, Andy Chou, SweeChuan Samuel Gan, Stefan Ionescu, Scott Ryun, Richard Martin, Jesse Speckhard
  • In situ sensor based contact detection
    Patent number: 8837076
    Abstract: Apparatus and method for positional sensing and control. In accordance with some embodiments, a transducer is positioned adjacent a recording medium. The transducer includes a write element, a read element, a heater and a thermally responsive sensor. Power is applied to the heater to establish a selected fly height of the transducer relative to the medium. A contact event between the transducer and the medium is detected responsive to an accumulated plural count of pulses in a bias signal obtained from the thermally responsive sensor.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: September 16, 2014
    Assignee: Seagate Technology LLC
    Inventors: CheeWee Cheng, Subhash Guddati, ShengYuan Lin, Andy Chou, SweeChuan Samuel Gan, Stefan Ionescu, Scott Ryun, Richard Martin, Jesse Speckhard
  • Head damage detection based on actuation efficiency measurements
    Patent number: 7652840
    Abstract: An actuation efficiency for a head is determined based on a displacement of the head relative to a storage media responsive to excitation of a heater element. Damage to the head is detected based on the determined actuation efficiency. Related circuits and devices are also discussed.
    Type: Grant
    Filed: May 8, 2007
    Date of Patent: January 26, 2010
    Assignee: Seagate Technology LLC
    Inventors: Barry Henry, Jim Fitzpatrick, Jesse Speckhard
  • Estimation and control of head fly height
    Patent number: 7468856
    Abstract: Various embodiments are disclosed that control head fly height based on estimates of head fly height. The fly height clearance between the head and a data storage media is estimated. Heating of the head by a heater element is then regulated in response to the estimated fly height.
    Type: Grant
    Filed: April 30, 2007
    Date of Patent: December 23, 2008
    Assignee: Seagate Technology LLC
    Inventors: Jim Fitzpatrick, Jihao Luo, Baoliang Zhang, Jesse Speckhard, Barry Henry
  • HEAD DAMAGE DETECTION BASED ON ACTUATION EFFICIENCY MEASUREMENTS
    Publication number: 20070268614
    Abstract: An actuation efficiency for a head is determined based on a displacement of the head relative to a storage media responsive to excitation of a heater element. Damage to the head is detected based on the determined actuation efficiency. Related circuits and devices are also discussed.
    Type: Application
    Filed: May 8, 2007
    Publication date: November 22, 2007
    Inventors: Barry Henry, Jim Fitzpatrick, Jesse Speckhard
  • ESTIMATION AND CONTROL OF HEAD FLY HEIGHT
    Publication number: 20070268612
    Abstract: Various embodiments are disclosed that control head fly height based on estimates of head fly height. The fly height clearance between the head and a data storage media is estimated. Heating of the head by a heater element is then regulated in response to the estimated fly height.
    Type: Application
    Filed: April 30, 2007
    Publication date: November 22, 2007
    Inventors: Jim Fitzpatrick, Jihao Luo, Baoliang Zhang, Jesse Speckhard, Barry Henry