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. 11, 1976
Filed:
Dec. 23, 1974
Applicant:
Inventors:
Walter J Butler, Scotia, NY (US);
Charles M Puckette, Scotia, NY (US);
James R Whitten, Scotia, NY (US);
Assignee:
General Electric Company, Schenectady, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
178 / ; 178D / ; 325475 ; 333 / ;
Abstract
A ghost canceller for the cancellation of a ghost signal from a complex electrical signal including a desired signal component as well as the ghost is provided wherein an electronically variable delay line of the charge transfer type is incorporated in a negative feedback loop. Bucket-brigade and charge-coupled devices may be employed with associated variable frequency clock oscillators to provide remotely variable delay times in an easily implemented structure.