Method and apparatus for recording data
US4799112A · kind A · utility
73Cited by
15References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 19, 1987 |
| Grant date | Jan 17, 1989 |
| Priority date | — |
| Expiry date | Feb 19, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B20/1258
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for increasing the amount of data capable of being stored in a magnetic storage device is disclosed. Basically, a magnetic characteristic of the disk to head interface is measured at several locations on the disk. The frequency for writing and reading the data is optimized in terms of the required resolution and the magnetic measurement. The read and write modes are then varied, based upon the optimized frequency, such that data is written on the disk at a frequency substantially equal to the optimized frequency and read from a disk having data recorded at the optimized frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.