Method for differentially writing to a memory disk
US6512649B1 · kind B1 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 30, 2000 |
| Grant date | Jan 28, 2003 |
| Priority date | — |
| Expiry date | Aug 30, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0013
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method is disclosed for controlling the write head of a magnetic disk storage device. The method includes sinking current from the first terminal of the write head and sourcing current to the second terminal of the write head substantially simultaneously with sinking current from the first terminal so that a first steady state voltage level appears on the first terminal of the write head and a second steady state voltage level appears on the second terminal thereof that are approximately at a midpoint between a high reference voltage level and a low reference voltage level. The common mode voltage of the write head is substantially constant over time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.