Issued Patents All Time
Showing 26–45 of 45 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7839591 | Disk drive comprising index spiral track identified by change in sync mark | William Ward Clawson | 2010-11-23 |
| 7746592 | Disk drive detecting defective spiral servo track | Jiangang Liang | 2010-06-29 |
| 7688539 | Disk drive self servo writing spiral tracks by propagating bursts | Lawrence M. Bryant, Yakov M. Lifchits | 2010-03-30 |
| 7656604 | Disk drive demodulating a spiral track by finding a maximum correlation between a spiral track crossing signal and a time-shifted nominal spiral track crossing signal | Jiangang Liang, Charles A. Park | 2010-02-02 |
| 7602575 | Disk drive adjusting estimated reader/writer offset to achieve target burst crossing signal amplitude when propagating servo sectors | Yakov M. Lifchits, Lawrence M. Bryant, Wing Ying | 2009-10-13 |
| 7499236 | Calibrating correlation between PES and off-track displacement by processing high frequency signal in spiral track | Tehri S. Lee, Harry S. Hvostov | 2009-03-03 |
| 7489464 | Servo writing a disk drive using a secondary actuator to control skew angle | Robert J. McNab | 2009-02-10 |
| 7468855 | Servo writing a disk drive from a number of spiral tracks equal to a non-integer multiple of product servo wedges | Tehri S. Lee | 2008-12-23 |
| 7433143 | Adjusting track density by changing slope of spiral tracks used to servo write a disk drive | Wing Ying, Jack M. Chue, Tehri S. Lee | 2008-10-07 |
| 7333280 | Servo writing a disk drive by synchronizing a servo write clock to a reference pattern on the disk and compensating for repeatable phase error | Yakov M. Lifchits, Wing Ying, Yilin Cai | 2008-02-19 |
| 7330327 | Servo writing a disk drive by writing discontinuous spiral tracks to prevent overheating | Jack M. Chue, Jai N. Subrahmanyam | 2008-02-12 |
| 7301717 | Servo writing a disk drive by integrating a spiral track read signal | Tehri S. Lee | 2007-11-27 |
| 7248426 | Servo writing a disk drive from spiral tracks by shifting a demodulation window an integer number of sync mark intervals | Tehri S. Lee | 2007-07-24 |
| 7113362 | Servo writing a disk drive by processing spiral tracks in an interleaved manner | Tehri S. Lee | 2006-09-26 |
| 7068459 | Adjusting track density by changing PES algorithm when servo writing a disk drive from spiral tracks | Robert L. Cloke, Tehri S. Lee, Edgar D. Sheh, Wing Ying | 2006-06-27 |
| 7068461 | Servo writing a disk drive by overwriting a harmonic frequency fill pattern in the servo burst area | Jack M. Chue, Tehri S. Lee | 2006-06-27 |
| 6992852 | Method for reducing disk thermal expansion effects while writing reference spiral servo patterns to a disk of a disk drive | Wing Ying, William Ward Clawson | 2006-01-31 |
| 6989954 | Demodulating servo sectors and spiral tracks using common circuitry | Tehri S. Lee, Robert L. Cloke | 2006-01-24 |
| 6987636 | Adjusting track density over disk radius by changing slope of spiral tracks used to servo write a disk drive | Jack M. Chue, Tehri S. Lee | 2006-01-17 |
| 6965489 | Using an external spiral servo writer to write reference servo sectors and spiral tracks to a disk to facilitate writing product servo sectors to the disk | Tehri S. Lee, Robert L. Cloke | 2005-11-15 |