Timothy F. Ellis
34Patents
12h-index
34Co-inventors
81Inventor score
Filing activity: Feb 2, 1998 → Aug 24, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6181505A | Synchronous digital demodulator with integrated read and servo channels | Physics | 58 | Expired |
| US6069764A | Compensation for repeatable run-out error | Physics | 43 | Expired |
| US6678110B2 | Robust servo demodulation filtering method | Physics | 30 | Expired |
| US6426845B1 | Asynchronous analog demodulator and method for a null-type servo pattern | Physics | 30 | Expired |
| US6510015B2 | Magnetic disc having physical servo patterns with a magnetic carrier, and method of making and using the same | Physics | 25 | Expired |
| US6243224A | Asynchronous digital demodulator and method for a null-type servo pattern | Physics | 24 | Expired |
| US6392834B1 | Concentric spacing of virtual data tracks using run-out compensation | Physics | 22 | Expired |
| US7119981B2 | Method and apparatus for tracking radially-dependent repeatable run-out | Physics | 21 | Expired |
| US6469849B1 | Field ratioing demodulation circuit for a null-type servo pattern | Physics | 18 | Expired |
| US6195220A | Method and apparatus utilizing field ratioing demodulation techniques for a null-type servo pattern | Physics | 16 | Expired |
| US6249392A | Head instability detection method and apparatus | Physics | 13 | Expired |
| US7349167B2 | Utilizing track identification fields for timing recovery | Physics | 13 | Expired |
| US6556933B1 | Transducer instability detection in a digital channel | Physics | 11 | Expired |
| US9070411B1 | Writable servo overlap zones | Physics | 11 | Active |
| US7064914B1 | Position error signal quality | Physics | 11 | Expired |
| US7511912B2 | Writing multiple servo sector patterns to improve servo sector alignment on multiple surfaces | Physics | 10 | Expired |
| US6882487B2 | Compensation for timing variation in disc drives employing servo tracking systems | Physics | 9 | Expired |
| US6627254B1 | Method of manufacturing a recording media with mechanically patterned landing zone | Emerging Cross-Sectional Technologies | 8 | Expired |
| US7948704B2 | Using servo data harmonics to monitor head-medium spacing | Physics | 7 | Active |
| US7529051B2 | Compensation for variation in timing skew in a disc drive data storage system | Physics | 6 | Expired |
| US10255943B1 | Independent head, dual reader control logic | Physics | 5 | Active |
| US6878426B2 | Recording media with mechanically patterned landing zone | Emerging Cross-Sectional Technologies | 4 | Expired |
| US7387848B2 | Recording media with mechanically patterned landing zone | Emerging Cross-Sectional Technologies | 4 | Expired |
| US10438620B1 | Servo zone transition optimization for magnetic disk recording devices | Physics | 3 | Active |
| US9865291B1 | Primary and secondary servo timing gates used with simultaneously operating readers | Physics | 3 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.