Patent · US Expired

Magnetic tape video recorder with a one head drum

US4642707A · kind A · utility

4Cited by

1References

20Claims

0Family size

Assignee

Deutsche Thomson-Brandt GmbH · DE

Inventors

Erich Geiger · St. Georgen im Schwarzwald, DE
Jurgen Kaaden · Villingen-Schwenningen, DE

Key dates

Filing date	Feb 21, 1984
Grant date	Feb 10, 1987
Priority date	—
Expiry date	Feb 21, 2004

Classification

Technology area (CPC G)Physics
CPC primaryG11B5/534
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A magnetic tape recorder for video recording and video playback with a one head drum and a head support plate. According to the invention the head support plate is point supported and spring attached to a base plate. The head support plate is movable around two rotation axes and is actuated with an electromagnetic drive means. The one motion cooperates with a dynamic track following circuit for providing dynamic height level correction of the head and allows to capture tracks during replay, which deviate from the parallel inclined position or, in case of a course of the track deviating from the tape recording speed resulting in a trick palyback. The motion around the other axis allows a controlled and regulated azimuth offset of the neighboring tracks during playback, which are recorded with continuously alternating azimuth angle.

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