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. 05, 1981
Filed:
Sep. 04, 1979
Applicant:
Inventor:
George V Jacoby, Los Altos, CA (US);
Assignee:
Sperry Rand Corporation, New York, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
H03H / ;
U.S. Cl.
CPC ...
333 / ; 307264 ; 330151 ; 330252 ;
Abstract
A signal amplitude equalizer circuit, having linear phase, for reforming high density magnetically recorded read-back signals to remove peak shift and the resulting errors caused thereby. The equalizer circuit employs series balanced differential amplifier circuits in connection with properly terminated delay lines across the amplifier output terminals to provide an adjustable transfer function that transforms the readhead signal, that follows an exponential frequency spectra curve, into a cosine power frequency spectra curve which, in the time domain, possesses a sufficiently narrow base to eliminate peak shift and its resulting amplitude decay.