Data storage device with spread spectrum spindle motor control
US11081988B1 · kind B1 · utility
2Cited by
11References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 26, 2020 |
| Grant date | Aug 3, 2021 |
| Priority date | — |
| Expiry date | Mar 5, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P7/293
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A data storage device is disclosed comprising a head actuated over a disk, and a spindle motor configured to rotate the disk. A pulse width modulated (PWM) control signal is generated having a frequency based on a PWM clock, the spindle motor is controlled using the PWM control signal, and a frequency of the PWM clock is swung between a minimum frequency and a maximum frequency at a swing rate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.