Offset and gain error discriminator
US5455720A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 27, 1994 |
| Grant date | Oct 3, 1995 |
| Priority date | — |
| Expiry date | Oct 27, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/59611
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Positive and negative peaks of the differential pulses produced by a differential head of a disk drive are detected. The respective peaks, which represent the positive and negative peaks of the pulses, are compared to a set of reference levels and, depending upon the relationship of those peaks with the reference levels, a gain error or an offset error is indicated. If the positive pulse peaks and negative pulse peaks exhibit substantially similar relationships with respect to the reference levels, a gain error is indicated. However, if the positive pulse peaks and negative pulse peaks exhibit dissimilar relationships with respect to the reference levels, an offset error is indicated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.