Method and apparatus for eliminating crosstalk in magnetic tape recorders
US4331992A · kind A · utility
7Cited by
5References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 5, 1980 |
| Grant date | May 25, 1982 |
| Priority date | — |
| Expiry date | Feb 5, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B23/0007
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In order to eliminate crosstalk between adjacent playback and recording heads in a multi-track, multi-head magnetic tape recorder or playback apparatus, the invention provides for tapping off part of the recording current and suitably adjusting its amplitude and/or phase to define a correction current which is applied to the playback head of the apparatus. The voltage resulting from the correction current exactly compensates the voltage induced by the stray magnetic field of the recording head. The correction circuit includes frequency-dependent components which account for the frequency dependence of the crosstalk signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.