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:
Aug. 10, 1982
Filed:
Jan. 05, 1981
Applicant:
Inventors:
Assignee:
Sony Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
358167 ; 358166 ; 358905 ;
Abstract
A ghost cancelling system for eliminating a ghost by using a ghost cancelling signal formed from an input video signal including the ghost and adding the ghost cancelling signal to the input video signal. In this ghost cancelling system, the divergence of the ghost cancelling circuit is avoided during the transient time of the channel selection or during the ghost cancelling process, and when there is the possibility that the ghost cancelling circuit diverges, the circuit is firstly made operable as a feed-forward type circuit for a predetermined period and thereafter made operable as a feedback type circuit.