Method for the recognition of an edge of a magnetic medium and a device for implementation of the method
US4476503A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 30, 1982 |
| Grant date | Oct 9, 1984 |
| Priority date | — |
| Expiry date | Mar 30, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/584
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
When setting a write gap or a read gap to a recording track on a magnetic medium, an edge of the medium is selected as a starting point, proceeding from which the write and read means are displaced in fixed track spacings. Appropriate method steps are: PA1 (a) generating a write signal with the write means of a read and write system exhibiting a write and a read means; PA1 (b) moving the medium from the write means toward the read means; PA1 (c) executing a read operation with the read means which generates a read signal; PA1 (d) comparing the read signal to a reference value identifying the write signal; and PA1 (e) outputting a detector signal indicating the edge when the write signal has been identified.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.