Apparatus and method to monitor leader pin position
US6906873B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 3, 2003 |
| Grant date | Jun 14, 2005 |
| Priority date | — |
| Expiry date | Jul 8, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B23/107
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus to monitor the positioning of a tape leader pin in a tape threader block moveably disposed in a tape drive. The' apparatus includes a tape threader block assembly comprising a first circuit having a first coil, a second circuit having a second coil, where that second circuit has an impedance, where the first coil is disposed adjacent the second coil. The apparatus further includes a detection circuit which detects the impedance of the second circuit, where the second circuit has a first impedance when the first circuit is open, and where the second circuit has a second impedance when the second circuit is closed. In the event a tape leader pin is properly releaseably fixtured to Applicants' threader block, the first circuit is closed and the impedance of the second circuit changes. The detection circuit detects that impedance change and provides a signal to a controller indicating that the tape leader pin is properly seated in the threader block.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.