Patent · US Expired

Rotary magnetic tape transducer headwheel structure

US4823211A · kind A · utility

3Cited by

2References

12Claims

0Family size

Assignee

Broadcast Television Systems GmbH · DE

Inventors

Axel Schulz · Emmelshausen, DE
Manfred Hescher · Weiterstadt, DE
Berthold Eiberger · Darmstadt, DE

Key dates

Filing date	Sep 14, 1987
Grant date	Apr 18, 1989
Priority date	—
Expiry date	Sep 14, 2007

Classification

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

Abstract

To effectively eliminate cross-talk between the weak signals picked up by a tape transducer pick-up head with signals being applied to a recording head, a disk-like headwheel carrier has a disk-like headwheel secured thereto. The disk-like headwheel carrier is formed with a recess which defines a chamber (6) in which the preamplifier for the reproduced signals is placed. Transducer leads are passsed in a channel duct formed between the headwheel carrier and the disk-like headwheel, which is in plate form. Preferably, both the disk-like headwheel as well as the carrier are made of lightweight metal, such as aluminum, so that the reproducing amplifier is totally shielded. The recording amplifier can be placed on top of the disk-like headwheel, separated and shielded from the reproducing preamplifier.

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