Issued Patents All Time
Showing 1–25 of 35 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12231832 | Method for pre-calculating and applying optimized phase patterns to LCoS switch panel of WSS module | Haijun Yuan, Wilfredo C. Nanita, Oswald Correya, Jack R. Kelly, Thomas J. Schwartz | 2025-02-18 |
| 10505656 | Optical wavelength selective switches with guard bands | — | 2019-12-10 |
| 8032004 | Multimedia presentation format | Dagan Packman, Steven B. Volk, Jerry E. Hurst, Jr. | 2011-10-04 |
| 7518816 | Method and apparatus for disc drive data security using fields in servo wedges | Gayle L. Noble | 2009-04-14 |
| 6912235 | Apparatus and method for phase control of tunable external cavity lasers | Douglas W. Anthon, Jill Berger, Alexander Tselikov, Stephen J. Hrinya, Howard S. Lee +1 more | 2005-06-28 |
| 6898221 | Apparatus for frequency tuning and locking and method for operating same | Jill Berger, Subrata Dutta, Olga Gorbounova, Stephen J. Hrinya, Fedor Ilkov +3 more | 2005-05-24 |
| 6898038 | Method and apparatus for disc drive data security using fields in servo wedges | Gayle L. Noble | 2005-05-24 |
| 6785075 | Self-writing servo and clock fields on a recording medium | Lawrence M. Bryant, Gabor Szita, Karl A. Belser, Robert Dale Murphy | 2004-08-31 |
| 6771443 | Circumferential positioning of servo sectors for servo track writing | Gabor Szita, Lawrence M. Bryant, Karl A. Belser | 2004-08-03 |
| 6345021 | System and method of efficient servo sector encoding | Karl A. Belser | 2002-02-05 |
| 6052345 | System for compensating for hard sector noise degradation of tracking error signals in an optical data storage system | Allen Keith Bates, Nhan X. Bui, Tetsuo Semba | 2000-04-18 |
| 5974019 | Optical system for two-dimensional positioning of light beams | Karl A. Belser, Joseph D. Drake, John H. Jerman | 1999-10-26 |
| 5936919 | System for compensating for hard sector noise degradation of tracking error signals in an optical data storage system | Allen Keith Bates, Nhan X. Bui, Tetsuo Semba | 1999-08-10 |
| 5768228 | Method and sytem for cancelling optical servo crosstalk in optical disk drives | Allen Keith Bates, Tetsuo Semba | 1998-06-16 |
| 5499231 | Optical disk drive with multiple data layer disk and system for focusing the optical beam | Wayne Isami Imaino, Hal J. Rosen | 1996-03-12 |
| 5426625 | Masking of tracking error signal abnormalities due to media defects | Nhan X. Bui, Robert A. Klem | 1995-06-20 |
| 5425013 | Relative position sensing calibration for optical storage device | Timothy S. Gardner, Brian G. Goodman, Yoshihiro Hirasaka | 1995-06-13 |
| 5289319 | Apparatus and method for detecting physical orientation of a position system and for calibrating an optimum control for the system that is usable in optical disk recorders | Enrique E. Aviles, Edwin R. Childers, Dave Paul McReynolds | 1994-02-22 |
| 5257251 | Single loop servo-positioning systems having means for changing the dynamic range of a position-error signal with speed of the relatively movable members | W.L. Chow | 1993-10-26 |
| 5233585 | Acquiring focus in an optical disk system using a time and shape modified focus error signal | James J. Dente | 1993-08-03 |
| 5220546 | Operating optical disk drives including calibrating a tracking error signal | — | 1993-06-15 |
| 5164932 | Acquiring a best focus using a focus signal offset | Robert A. Klem | 1992-11-17 |
| 5142516 | Anti-skating control of a positioning servo system | — | 1992-08-25 |
| 5138594 | Reducing amplitude variations of optical disk readback signals and increasing reliability of track-crossing counts | Benjamin C. Fiorino | 1992-08-11 |
| 5136569 | Optical disk recorder for diverse media types and having a predetermined initialization or start-up procedure | Blair I. Finkelstein, Morovat Tayefeh, Raymond Yardy | 1992-08-04 |