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:
Nov. 30, 1982
Filed:
Nov. 03, 1980
Applicant:
Inventor:
Gary D Martin, Andover, MA (US);
Assignee:
Bell Telephone Laboratories, Incorporated, Murray Hill, NJ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B / ;
U.S. Cl.
CPC ...
375 14 ; 375 16 ; 333 18 ; 328 15 ;
Abstract
An adaptive equalizer is disclosed comprising an amplitude equalizer circuit (12) having an adjustable Q, and a plurality of all-pass circuits (14,15) having adjustable delay bumps. A controller (18) adjusts the tuning, magnitude of the bumps, and the number of all-pass networks in the equalizer in response to variations in the power within a plurality of spectrum samples and the bit error rate of the equalizer output signal.