Data storage device with adaptive control of current balancer to mitigate rotational vibration (RV) noise
US12272388B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 10, 2023 |
| Grant date | Apr 8, 2025 |
| Priority date | — |
| Expiry date | Aug 10, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/59688
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A data storage device comprises a disk; a head configured to read data from and write data to the disk; and a current balancer configured to receive a first voltage supply having a load limit and to receive a second voltage supply. The current balancer is further configured, to mitigate rotational vibration (RV) noise, to sample a first current IH5V drawn from the first voltage supply, to maintain a difference between the first current IH5V and a current balancer threshold parameter IThreshold to be at least twice a minimum peak current minCurrentLimitpk amount required for turn on of the current balancer (IH5V−IThreshold≥2*minCurrentLimitpk), and to draw a second current from the second voltage supply to satisfy a part of a total load on the first voltage supply that exceeds the load limit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.