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:
Oct. 11, 1977
Filed:
Dec. 01, 1975
Applicant:
Inventors:
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N / ; H04B / ;
U.S. Cl.
CPC ...
358167 ; 358905 ; 328165 ; 325476 ;
Abstract
A ghost signal eliminating system which eliminates a ghost by delaying a video signal through a variable delay line by the delay time of the ghost from the true image and subtracting the delayed video signal from the original video signal. The variable delay line comprises a fine adjusting circuit for fine-adjusting the delay time and a coarse adjusting circuit for coarse-adjusting the delay time, the coarse adjusting circuit being controlled by a detection voltage for a control voltage level and the fine adjusting circuit being controlled by a voltage which is the difference between the control voltage and the detection voltage.