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:
Aug. 13, 1985
Filed:
Nov. 16, 1983
Applicant:
Inventor:
Norikazu Sawazaki, Yokohama, JP;
Assignee:
Tokyo Shibaura Denki Kabushiki Kaisha, Kawasaki, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
360 55 ; 360134 ;
Abstract
Signals are recorded on a magnetic tape having a magnetic recording layer containing a magnetic material whose high frequency characteristic varies with a magnetic field produced therein. Changes in the coupling degree of a high frequency coupling circuit caused by a signal field allows to reproduce a recorded signal.