Issued Patents All Time
Showing 51–75 of 84 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6216249 | Simplified branch metric for reducing the cost of a trellis sequence detector in a sampled amplitude read channel | Sian She | 2001-04-10 |
| 6208481 | Gain and phase constrained adaptive equalizing filter in a sampled amplitude read channel for magnetic recording | Mark S. Spurbeck, Li Du, Trent Dudley, German Feyh, Richard T. Behrens | 2001-03-27 |
| 6185173 | Sampled amplitude read channel employing a trellis sequence detector matched to a channel code constraint and a post processor for correcting errors in the detected binary sequence using the signal samples and an error syndrome | Jay N. Livingston | 2001-02-06 |
| 6157604 | Sampled amplitude read channel employing a baud rate estimator for digital timing recovery in an optical disk storage device | German Feyh, Jim Graba | 2000-12-05 |
| 6144513 | Detecting servo data and servo bursts from discrete time samples of an analog read signal in a sampled amplitude read channel | David E. Reed, Richard T. Behems | 2000-11-07 |
| 6141169 | System and method for control of low frequency input levels to an amplifier and compensation of input offsets of the amplifier | David Pietruszynski, Jerrell P. Hein, German Feyh | 2000-10-31 |
| 6115198 | PR4 sampled amplitude read channel for detecting user data and embedded servo data | David E. Reed | 2000-09-05 |
| 6111710 | Asynchronous/synchronous gain control for interpolated timing recovery in a sampled amplitude read channel | German Feyh, Sian She | 2000-08-29 |
| 6108151 | Sampled amplitude read channel for reading user data and embedded servo data from a magnetic medium | Tyson Tuttle, Diwakar Vishakhadatta, Jerrel P. Hein, David R. Welland, David E. Reed +4 more | 2000-08-22 |
| 6052248 | Parity channel code for enhancing the operation of a remod/demod sequence detector in a d=1 sampled amplitude read channel | David E. Reed | 2000-04-18 |
| 6038091 | Magnetic disk drive read channel with digital thermal asperity detector | David E. Reed, German Feyh | 2000-03-14 |
| 6032284 | Trellis coding system for disc storage systems | — | 2000-02-29 |
| 6023386 | Fault tolerant sync mark detector for synchronizing a time varying sequence detector in a sampled amplitude read channel | David E. Reed | 2000-02-08 |
| 6009549 | Disk storage system employing error detection and correction of channel coded data, interpolated timing recovery, and retroactive/split-segment symbol synchronization | Christopher P. Zook, Richard T. Behrens | 1999-12-28 |
| 5999355 | Gain and phase constrained adaptive equalizing filter in a sampled amplitude read channel for magnetic recording | Richard T. Behrens, Li Du, Mark S. Spurbeck, German Feyh, Trent Dudley | 1999-12-07 |
| 5987634 | Channel quality circuit in a sampled amplitude read channel | Richard T. Behrens, William R. Foland, Jr. | 1999-11-16 |
| 5966258 | Asynchronous/synchronous digital gain control loop in a sampled amplitude read channel | — | 1999-10-12 |
| 5966415 | Adaptive equalization in a sub-sampled read channel for a disk storage system | Sian She, David E. Reed | 1999-10-12 |
| 5961658 | PR4 equalization and an EPR4 remod/demod sequence detector in a sampled amplitude read channel | David E. Reed, Lisa C. Sundell | 1999-10-05 |
| 5926490 | Sampled amplitude read channel employing a remod/demod sequence detector guided by an error syndrome | David E. Reed, Lisa C. Sundell | 1999-07-20 |
| 5903857 | Method and apparatus for calibrating an analog filter in a sampled amplitude read channel | Richard T. Behrens, Tyson Tuttle, Kent D. Anderson, Trent Dudley | 1999-05-11 |
| 5854714 | Digital servo demodulation for sampled amplitude magnetic recording | David E. Reed | 1998-12-29 |
| 5812336 | Fixed sample rate sampled amplitude read channel for zoned magnetic recording | Mark S. Spurbeck, Howard H. Sheerin | 1998-09-22 |
| 5802118 | Sub-sampled discrete time read channel for computer storage systems | David E. Reed, Richard T. Behrens | 1998-09-01 |
| 5796535 | Sampled amplitude read channel employing a user data frequency synthesizer and a servo data frequency synthesizer | Tyson Tuttle, Diwakar Vishakhadatta, Jerrel P. Hein, David R. Welland, David E. Reed +4 more | 1998-08-18 |