Portable playback system with active tape drive tensioning feature
US4679108A · kind A · utility
2Cited by
8References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 2, 1983 |
| Grant date | Jul 7, 1987 |
| Priority date | — |
| Expiry date | Feb 2, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B15/43
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention generally relates to playback systems for monitoring the performance of cassette tape duplicating recorders and is specifically directed to a performance monitoring playback system including precision equalization circuitry and an active tape tensioning mechanism which together produce stable high frequency system response.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.