System and method for providing controllable steady state current waveshaping in a hard disk drive (HDD) preamplifier
US9105276B2 · kind B2 · utility
1Cited by
1References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 20, 2013 |
| Grant date | Aug 11, 2015 |
| Priority date | — |
| Expiry date | Feb 20, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/09
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Aspects of the disclosure pertain to a system and method for providing controllable steady state current waveshaping in a preamplifier of a data storage system (e.g., hard disk drive). The preamplifier provides an output including a write current waveform having a steady state current level that is controllable via the write block circuitry of the preamplifier. This enhances the ability of the waveform to promote improved on-track and off-track write performance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.