Patent · US Expired

Frequency modulation pattern for disk drive assemblies

US6754016B2 · kind B2 · utility

35Cited by
20References
30Claims
0Family size

Assignee

Inventors

Key dates

Filing dateApr 19, 2001
Grant dateJun 22, 2004
Priority date
Expiry dateJan 28, 2022

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG11B5/02
  • WIPO fieldAudio-visual technology
  • WIPO sectorElectrical engineering

Abstract

The invention relates to control systems for data storage media. More particularly, the invention relates to a system, method and apparatus for forming various frequency modulation patterns on storage media for providing position error signals. The invention also relates to forming various frequency modulation patterns on storage media for providing position error signals having a continuously varying frequency that is proportional to the position of a read/write transducer head within a track defined on a storage medium. The invention also relates to providing a demodulated signal that is proportional to a continuously varying position error signal frequency and thus to the position of the read/write head within a track defined on a storage medium.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.