High sustained data rate storage devices having microactuator
US6914746B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Jan 13, 2003 |
| Grant date | Jul 5, 2005 |
| Priority date | — |
| Expiry date | Jun 27, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/5552
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Multiple recording heads are used to perform parallel read and write operations on multiple disk surfaces in disk drives. Small-scale actuators are positioned between the transducer and the macroactuator that moves the entire head gimble assembly. The small-scale actuators adjust the position of the recording heads to the appropriate data tracks during the read and write operations to compensate for misalignments between the multiple recording heads. The parallel read and write operations can significantly improve the sustained data rates associated with disk drives. The access time required to read data stored on a disk can be reduced by writing multiple copies of the same data blocks to different locations on the surface of disks in the disk drives. Read operations are performed by moving the recording head to the copy of the data block that will produce the smallest access time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.