Disk drive method and apparatus
US5087996A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1989 |
| Grant date | Feb 11, 1992 |
| Priority date | — |
| Expiry date | Dec 22, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/553
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A disk drive has a side-zero and a side-one analog and digital circuits. The disk drive may write both sides of the disk at the same time and then verify both sides at the same time. A microcontroller is connected to the side-zero and side-one digital circuits. The microcontroller receives the sensor index pulse from the index sensor and then sends a microcontroller index pulse to the side-zero and side-one digital circuits a predetermined period of time after receiving the sensor index pulse. The predetermined period of time is such that after the head is stepped to the next track and achieves a stable position, writing will begin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.