Low velocity disk drive load controller
US6154340A · kind A · utility
16Cited by
10References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 3, 1997 |
| Grant date | Nov 28, 2000 |
| Priority date | — |
| Expiry date | Jul 3, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/6005
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The method disclosed is generally directed to a process for controlling the velocity of an actuator arm assembly during a load from a ramp. A process in accordance with the invention includes applying an alternating current to the VCM to eliminate frictional effects. An increasing current is applied to the VCM. The increasing current is an increasing function of time in one embodiment of the invention and is determined such that the heads are loaded at a predetermined velocity. In one embodiment, the predetermined velocity is 1 in/sec.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.