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. 17, 1993
Filed:
Dec. 18, 1990
Applicant:
Inventors:
Tatsushi Koguchi, Iwai, JP;
Shigehiro Ito, Toride, JP;
Kazuyuki Ebihara, Toride, JP;
Yuji Nishi, Iwai, JP;
Assignee:
Victor Company of Japan, Ltd., Yokohama, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
358167 ; 358905 ;
Abstract
A transversal filter filters an input video signal with a variable filtering characteristic. A waveform of a ghost cancel reference signal is periodically extracted from the input signal. An average of the successively-extracted waveforms is calculated. The filtering characteristic is determined on the basis of the calculated average of the extracted waveforms. An extracted waveform which is contaminated by an error or a jitter is rejected and is prevented from being used in the calculation of the average of the extracted waveforms.