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. 28, 1990
Filed:
Nov. 23, 1988
Reiichi Kobayashi, Osaka, JP;
Tadaaki Tanaka, Tokyo, JP;
Fumiyoshi Sasaki, Tokyo, JP;
Tetsuro Miyazaki, Tokyo, JP;
NEC Home Electronics Ltd., Osaka, JP;
Nippon Hoso Kyokai, Tokyo, JP;
Abstract
A video ghost signal canceling circuit which has an adding means for adding a ghost canceling signal to a digital video signal thereby canceling ghost components of the video signal, and a ghost canceling signal generation means for generating a ghost canceling signal in accordance with an output of the adding means. The ghost canceling signal generation means of the present invention comprises a variable delay filter means composed by a parallel arrangement of a plurality of variable delay lines a delay amount of which is controllable from the outside, and a plurality of transversal filters with a coefficient which is controllable, wherein each transversal filter is connected in series to corresponding variable delay line, and the adding means for adding all outputs of the variable delay filter means and for outputting a ghost canceling signal.