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. 09, 1983
Filed:
Mar. 06, 1981
Applicant:
Inventors:
Roy H Seim, San Diego, CA (US);
John F Bagby, Encinitas, CA (US);
Assignee:
Eastman Kodak Company, Rochester, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ; G11B / ;
U.S. Cl.
CPC ...
360 65 ; 360 25 ;
Abstract
Prior art quadruplex head assemblies (equipped with metal heads) are detachable for purposes of refurbishment with ferrite heads. The concept of the invention is to mount corrective compensation circuits to each such refurbished quadruplex head assembly so that recordings by means of ferrite heads resemble recordings by metal heads. As a result, recordings produced by ferrite and metal heads are interchangeably playable on the same recorder without adjustment thereto. The compensation circuits are such that they self-disable during signal playback.