Tape transport reel servomechanism
US3958777A · kind A · utility
3Cited by
3References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 13, 1974 |
| Grant date | May 25, 1976 |
| Priority date | — |
| Expiry date | Sep 13, 1994 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B15/58
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A tape transport system having a capstan servomechanism for velocity control of tape across a read/write head and separate reel servomechanisms for tape supply and take-up control, and also having tape loops in vacuum columns, is provided with tape position feedback to each reel servomechanism to stabilize reel positions in a standby (zero capstan speed) condition from AC tachometers of the induction-generator type normally used during steady state (steady capstan speed) for velocity feedback.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.