Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4852105 | System for evaluation of a subcode | — | 1989-07-25 |
| 4827202 | Method of and circuitry for automatically adjusting the variable-gain amplification in a control loop | Engelbert Laufer, Wilfried Rohde | 1989-05-02 |
| 4810973 | Method of compensating the offset voltage in a variable gain amplifier and circuitry for carrying out the method | — | 1989-03-07 |
| 4809253 | Focus control through detection of the rate of error in discs with a control signal inversely dependent on the error rate | Dieter Baas | 1989-02-28 |