Signal reproducing apparatus having rotary heads rotating 180.degree. out of phase and producing signals for tracking control
US6014284A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 27, 1995 |
| Grant date | Jan 11, 2000 |
| Priority date | — |
| Expiry date | Nov 27, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B21/10
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A signal reproducing apparatus is arranged to have two reproduced signals reproduced from a plurality of tracks formed on a magnetic medium by two rotary heads arranged to rotate 180 degrees out of phase with each other and which trace positions shifted from each other, to extract, from the two reproduced signals, two signals having respective different levels used for tracking control, and to perform tracking control by using the two extracted signals to cause the heads to trace positions shifted from a predetermined track. The arrangement enables the heads to stably trace track positions shifted from positions to be traced in the normal reproduction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.