Magnetic disc apparatus
US6191905A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 11, 1999 |
| Grant date | Feb 20, 2001 |
| Priority date | — |
| Expiry date | Mar 11, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/012
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention provides a magnetic disc apparatus comprising: a magnetic disc and a signal processor having functions of (i) setting measurement points at an interval which is smaller in the vicinity of an initial position of a window than in the vicinity of the maximum modification position; (ii) shifting the window from the initial position up to the maximum modification position; (iii) each time the window position is shifted according to the aforementioned interval, reproducing a check data recorded on the magnetic disc, so as to measure an error rate; and (iv) using the error rate measurement results so as to obtain an optimal position of the window.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.