Control for tape drive system
US4448368A · kind A · utility
45Cited by
11References
38Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 23, 1982 |
| Grant date | May 15, 1984 |
| Priority date | — |
| Expiry date | Mar 23, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B15/54
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A control for a digital cassette tape drive maintains constant linear tape velocity at the playback head, constant tape tension, provides compensation for inertial imbalances and provides for minimal stop time. Constant linear velocity is obtained by computing actual velocity at the head and using the computed information to control takeup motor speed. Tape tension control is achieved by energizing the payout hub drive motor with a voltage which is a function of hub rotational speed and motor current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.