Patent · US Expired

Magnetic tape recorder with shielding device for contact-free signal transfer between components moved relative to one another

US5036418A · kind A · utility

4Cited by

7References

1Claims

0Family size

Assignee

BTS Broadcast Television Systems GmbH · DE

Inventors

Hartmut Willmann · Camburg, DE
Ludwig Dittmann · Berlin, DE
Richard Heinz · Glastonbury, US
Jorn Lutzeler · Zwingenberg, DE

Key dates

Filing date	Oct 19, 1988
Grant date	Jul 30, 1991
Priority date	—
Expiry date	Oct 19, 2008

Classification

Technology area (CPC G)Physics
CPC primaryG11B5/53
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

To improve the crosstalk behavior of a multi-channel magnetic tape recorder with a rotating head wheel, whose magnetic heads receive signals through a rotating transformer, the leads between the magnetic heads and the corresponding transformer windings are shielded from one another. Advantageously, this shielding is made of small tubes of an efficiently electroconductive metal which, in another embodiment, can be securely connected electrically and mechanically with the rotational axis. For further improvement of the crosstalk characteristics, the shielding can also be connected in an electrically conducting fashion with the short-circuit rings located between the individual transformers.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.