Magnetic disk drive which accesses host RAM
US6987635B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 7, 2003 |
| Grant date | Jan 17, 2006 |
| Priority date | — |
| Expiry date | Sep 28, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B19/02
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a magnetic disk apparatus which is removably mounted or embedded to a host apparatus and intermittently accessed for recording/reproducing data, a RAM contained in the host apparatus is utilized for a portion or entirety of a buffer RAM for use in the intermittent access to accomplish a reduction in size and cost of the magnetic disk apparatus. In addition, the magnetic disk apparatus is controlled to rotate a magnetic disk at a variable rotational speed, and operated at a rotational speed at which the total power consumption is minimized in accordance with the capacity of the utilized buffer RAM and whether an access is made for recording or reproduction, thereby improving a power saving effect.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.