Alan J. Armstrong
16Patents
11h-index
13Co-inventors
65Inventor score
Filing activity: Feb 1, 1993 → Feb 11, 2010
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5701314A | On-the-fly error correction using thermal asperity erasure pointers from a sampled amplitude read channel in a magnetic disk drive | Physics | 161 | Expired |
| US5844920A | Thermal asperity compensation using multiple sync marks for retroactive and split segment data synchronization in a magnetic disk storage system | Physics | 155 | Expired |
| US5761212A | Channel quality | Physics | 67 | Expired |
| US5424881A | Synchronous read channel | Physics | 66 | Expired |
| US6005731A | Channel quality circuit employing a test pattern generator in a sampled amplitude read channel for calibration | Physics | 43 | Expired |
| US5812334A | Synchronous read channel employing discrete timing recovery, transition detector, and sequence detector | Physics | 28 | Expired |
| US6313961A | Method and apparatus for calibrating a synchronous read channel integrated circuit | Physics | 27 | Expired |
| US5623377A | Filtering a read signal to attenuate secondary pulses caused by pole tips of a thin film magnetic read head | Electricity | 26 | Expired |
| US5978162A | Synchronous read channel integrated circuit employing a channel quality circuit for calibration | Physics | 19 | Expired |
| US6021011A | Synchronous read channel employing a digital center frequency setting for a variable frequency oscillator in discrete time timing recovery | Physics | 18 | Expired |
| US5844738A | Synchronous read channel employing a sequence detector with programmable detector levels | Physics | 11 | Expired |
| US5966257A | Synchronous read channel integrated circuit employing discrete time timing recovery | Physics | 4 | Expired |
| US7957370B2 | Synchronous read channel | Physics | 4 | Active |
| US7379452B2 | Synchronous read channel | Physics | 1 | Expired |
| US8100318B1 | Joining of tungsten alloys | Performing Operations; Transporting | 1 | Active |
| US7885255B2 | Synchronous read channel | General | 0 | Revoked |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.