Reel position-detecting device
US4726542A · kind A · utility
6Cited by
6References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 25, 1986 |
| Grant date | Feb 23, 1988 |
| Priority date | — |
| Expiry date | Aug 25, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B15/16
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A reel position-detecting device for use in a magnetic tape drive unit, designed to determine whether or not a supply reel has been positioned upside down in a retainer. When reel-detecting means detects that the supply reel has been set in the retainer, the retainer is rotated in the opposite direction to the tape-supply direction. If tape supply-detecting means detects the magnetic tape and then ceases to detect the tape within a predetermined period, processing means determines that the supply reel has been correctly positioned. Otherwise, the processing means determines that the supply reel has been positioned upside down.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.