Fall detection scheme using FFS
US9076471B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 26, 2013 |
| Grant date | Jul 7, 2015 |
| Priority date | — |
| Expiry date | Sep 26, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B21/12
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
For a disk drive involving a disk; a head; and control circuitry having a servo control system operable to actuate the head, the control circuitry may be configured to determine a magnitude of acceleration readings, the acceleration readings involving at least three degrees of freedom, wherein when a magnitude of the acceleration readings is less than a first threshold, the control circuitry confirms a free fall, wherein when the magnitude is between the first and second threshold, the control circuitry confirms a tilt drop. During the tilt drop and the free fall, the control circuitry is further configured to actuate the head to park and monitor the shock impact.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.