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:
May. 06, 1980
Filed:
May. 08, 1978
Applicant:
Inventors:
Arthur P Geffon, Sunnyvale, CA (US);
George V Jacoby, Los Altos, CA (US);
Assignee:
Sperry Rand Corporation, New York, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
G11B / ; G11B / ;
U.S. Cl.
CPC ...
360 45 ; 360 66 ;
Abstract
Magnetic recording apparatus including signal equalization means for recording data so as to obtain read pulses therefrom which are symmetrical about their peak and substantially narrowed at both the base and half amplitude points whereby increased packing density may be achieved without attendant peak shift, the equalization being provided by means for generating an ac bias signal in conjunction with data transitions and associated equalizer transitions referenced to the bias signal for application to magnetic recording means.