Method and apparatus for performing position error signal conditioning of LTO media servo format written-in velocity variation
US6762900B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 17, 2001 |
| Grant date | Jul 13, 2004 |
| Priority date | — |
| Expiry date | Sep 22, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B15/46
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for performing position error signal conditioning of LTO media servo format written-in velocity variation is disclosed. According to the present invention only the signals demonstrating velocity deviations are filtered. A magnetic recording tape includes servo signal bursts of flux transitions recorded thereon. The servo bursts include a configuration of stripes of A spacings and B spacings and a servo head disposed proximate to the magnetic recording tape senses the flux transitions of the servo signal bursts. A servo controller, coupled to the servo head, receives the sensed signals from the servo head. The servo controller further includes a filter for filtering the B time interval servo signal components. Then a position error signal according to:PES=ref−A/(B filtered), wherein A represents unfiltered A time interval servo components and B filtered is filtered B time interval servo components.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.