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:
Jun. 04, 1996
Filed:
Jul. 22, 1991
Applicant:
Inventors:
Lawrence M Ecklund, Wheaton, IL (US);
Gregory J Buchwald, Crystal Lake, IL (US);
Steven G Parmelee, Crystal Lake, IL (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03G / ;
U.S. Cl.
CPC ...
4552001 ; 4552331 ; 455266 ; 455267 ; 333 / ; 381102 ; 381103 ;
Abstract
An adaptive graphic equalizer (200, 400) has various ordinarily fixed parameters (such as center frequencies, filter bandwidths, and step response sensitivity) that are automatically altered to suit a particular audio source. In one embodiment, a radio (100) includes the graphic equalizer, and such adjustments are automatically made depending upon whether the user has selected the AM or FM reception band.