Johann; Donald F.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Johann; Donald F..The latest application filed is for "charge pump for restoring dc in an optical recording read channel".
- Johann; Donald F. - Palo Alto CA
| Patent | Date |
|---|---|
| Charge pump for restoring DC in an optical recording read channel Grant 5,355,356 - Johann , et al. October 11, 1 | 1994-10-11 |
| Method and apparatus for calibrating laser write power by averaging upper and lower knees of a calibration profile Grant 5,341,360 - Johann , et al. August 23, 1 | 1994-08-23 |
| Autonomous fault diagnosis for disk drive using an internal microprocessor Grant 4,268,905 - Johann , et al. May 19, 1 | 1981-05-19 |
| Drive power sequencing Grant 4,233,666 - Walberg , et al. November 11, 1 | 1980-11-11 |
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