The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 15, 1991
Filed:
Jul. 27, 1989
Applicant:
Inventor:
Jorn Lutzeler, Zwingenberg, DE;
Assignee:
BTS Broadcast Television Systems GmbH, Darmstadt, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B / ; G11B / ; G11B / ;
U.S. Cl.
CPC ...
360 66 ; 360 60 ; 360 46 ; 360 67 ;
Abstract
In order to avoid distortion of digital signals recorded on a magnetic tape following erasure of the recording tracks by a d.c. erase head, a compensating magnetic bias field opposed to the remanent erase field is superimposed upon the field recorded by the digital signals. This may be produced by superimposing a direct current on the recording current furnished to the recording head, either directly or by superimposing a bias voltage at the input of the recording amplifier. A separate magnetic head following the erase head and preceding the recording head may also be used to produce the compensating bias field.