Data storage device demodulating servo stripes using matched filter
US11386928B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 15, 2021 |
| Grant date | Jul 12, 2022 |
| Priority date | — |
| Expiry date | Feb 15, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B19/045
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A data storage device is disclosed comprising at least one head configured to access a magnetic tape comprising a plurality of servo frames each comprising a plurality of servo bursts, wherein each servo burst comprises a plurality of servo stripes. The servo stripes in a first servo burst are read using the head to generate a first read signal that is processed using a first matched filter matched to the first servo burst in order to generate an average time stamp for the servo stripes in the first servo burst. A position error signal (PES) is generated based on the average time stamp of the first servo burst, and the head is positioned relative to the magnetic tape based on the PES.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.