Calibration system for limiting tape head assembly positioning errors during data writing and reading of tape in tape drive
US8824083B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 31, 2013 |
| Grant date | Sep 2, 2014 |
| Priority date | — |
| Expiry date | Jul 31, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/00826
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Systems and methods (e.g., “utilities”) of measuring errors in the positioning of tape head assembly data write and read elements of a tape drive and utilizing obtained calibration data to accurately align the data write elements with a desired position while writing data tracks and data read elements while reading previously written and aligned data tracks. The disclosed utilities independently determine a degree to which a tape drive write head is to be offset from a nominal write position of the write head over a tape and independently determine a degree to which a tape drive read head is to be offset from a nominal center position of previously written data track of the tape, each to collectively account for the various types of non-idealities in the write or read head of the tape drive (e.g., positioning errors between the data write/read elements and servo readers, etc.).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.