Dynamic loop gain alteration for data retrieval
US4003086A · kind A · utility
12Cited by
7References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 28, 1975 |
| Grant date | Jan 11, 1977 |
| Priority date | — |
| Expiry date | Apr 28, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B20/1252
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for recovering data stored on a magnetic medium which includes a variable frequency oscillator and a variable frequency oscillator feedback control loop therefor as a part of the data read circuitry, and which includes means for attempting to recover marginally recorded data by increasing the variable frequency oscillator feedback control loop gain during predetermined data read retries.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.