Rotary head type magnetic tape recording reproducing apparatus
US4327384A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 29, 1980 |
| Grant date | Apr 27, 1982 |
| Priority date | — |
| Expiry date | Jan 29, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/588
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A rotary head type magnetic tape recording/reproducing apparatus, by which a tracking condition of the reproducing heads and a recorded track can be automatically adjusted. This apparatus includes an oscillator for imparting small vibrations to the reproducing heads, a synchronous detector, an integration adder circuit including an adder and a delay circuit rotary heads mounted on a positionable element, and from the small vibrations. A tracking error signal which is derived by wobbling circuit is applied to the integration adder circuit, and the positionable element is controlled by the output signal of the integration adder means so as to construct a servo loop. Accordingly, proper tracking can be attained even for large tracking error.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.