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:
Mar. 23, 1976
Filed:
May. 09, 1974
Applicant:
Inventor:
Duane H Cooper, Champaign, IL (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R / ;
U.S. Cl.
CPC ...
1791 / ; 1791 / ; 179 / ; 179 / ; 179 / ;
Abstract
A method and apparatus is disclosed for reducing distortion between signals that are recorded on a recording medium in a multiple-frequency manner. More specifically, the present invention is directed to reducing or eliminating crosstalk from a main channel signal to a sub-channel signal that is caused by tracing distortion produced in a higher frequency range of the sub-channel signal. The reduction of crosstalk is achieved by reverse compensating a sub-channel signal during recording by an anticipated amount of tracing distortion.