Issued Patents All Time
Showing 25 most recent of 47 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8565052 | Methods, systems, and computer program products for correcting repeatable runout | Fred R. Hansen | 2013-10-22 |
| 8510766 | Drum for use in testing optical tape media and method and apparatus for mounting optical tape media on drum | Faramarz Mahnad, Scott D. Wilson, Steve Ray | 2013-08-13 |
| 8000049 | Self-servo writing using reference patterns with timing correction | John VanLaanen | 2011-08-16 |
| 7782721 | Digital focus and tracking servo system with multi-zone calibration | Ron J. Kadlec, Christopher J. Turner, Hans Brandon Wach | 2010-08-24 |
| 7680004 | Digital servo system with inverse non-linearity compensation | Ron J. Kadlec, Christopher J. Turner | 2010-03-16 |
| 7675702 | Reduced convolution for repetitive disturbance rejection | Xiao-Ping Zhang, John VanLaanen | 2010-03-09 |
| 7672199 | Close focus algorithm in a digital focus servo system | Ron J. Kadlec, Christopher J. Turner | 2010-03-02 |
| 7570445 | Adaptively adjusting seek function control parameters based on off-track write events | Steven J. Alfred | 2009-08-04 |
| 7551387 | Servo writing with offset compensation for prewritten reference | Yu Sun, Dave McMurtrey, Bruce A. Liikanen, Don Brunnett, John VanLaanen +4 more | 2009-06-23 |
| 7260031 | Digital focus and tracking servo system with one-track jump | Ron J. Kadlec | 2007-08-21 |
| 7196979 | Calibration storage methods for a digital focus and tracking servo system with calibration | Ron J. Kadlec, Christopher J. Turner, Hans Brandon Wach | 2007-03-27 |
| 7079459 | System and method for performing a spin motor startup operation | Christopher J. Turner | 2006-07-18 |
| 7065018 | CLV system and method using PSA lookup | Christopher J. Turner | 2006-06-20 |
| 7057983 | System and method for controlling tracking and seeking in an optical disc drive | Christopher J. Turner, Ron J. Kadlec | 2006-06-06 |
| 7054242 | System and method for controlling focus in an optical disc drive | Christopher J. Turner, Ron J. Kadlec | 2006-05-30 |
| 7038988 | System and method for controlling time critical operations in a control system for an optical disc drive | Christopher J. Turner, Ron J. Kadlec | 2006-05-02 |
| 7023776 | Calibration initiation methods for a tracking and focus servo system | Ron J. Kadlec, Christopher J. Turner, Hans Brandon Wach | 2006-04-04 |
| 7020054 | Digital servo system with biased feed-forward | Ron J. Kadlec, Christopher J. Turner | 2006-03-28 |
| 6977873 | System and method to adjust the level of re-calibration effort based on disc drive performance | Christopher J. Turner, Ron J. Kadlec, Hans Brandon Wach | 2005-12-20 |
| 6970410 | Focus detection in a digital focus servo system | Ron J. Kadlec | 2005-11-29 |
| 6970403 | Calibration of tracking error signal offset in a tracking servo system | Ron J. Kadlec, Hans Brandon Wach | 2005-11-29 |
| 6963524 | System and method for controlling interrupts in a control system for an optical disc drive | Christopher J. Turner, Ron J. Kadlec | 2005-11-08 |
| 6958963 | System and method for handling events in an optical disc drive | Christopher J. Turner, Ron J. Kadlec, Hans Brandon Wach | 2005-10-25 |
| 6958957 | Digital tracking and focus servo system with TES to FES crosstalk calibration | Ron J. Kadlec, Hans Brandon Wach | 2005-10-25 |
| 6950380 | Detector input dark current offset calibration in an optical disk drive digital servo | Ron J. Kadlec, Christopher J. Turner | 2005-09-27 |