Off-track interference emulator
US6771442B2 · kind B2 · utility
9Cited by
19References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 29, 2001 |
| Grant date | Aug 3, 2004 |
| Priority date | — |
| Expiry date | Apr 20, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/20
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus and method for adding errors to magnetic data and then detecting the errors is revealed. The method includes providing a magnetic recording channel, reading and digitizing a stored signal, introducing an error signal that emulates off-track interference, adding the error to the digitized signal, and determining an error rate. The apparatus includes a magnetic recording channel having a linear feedback shift register to generate a pseudo-random binary sequence, circuitry to convert the sequence into an error signal, and a Viterbi detector to quantify an error rate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.