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:
Feb. 14, 1989
Filed:
Jul. 21, 1987
Applicant:
Inventors:
Masuo Oku, Kamakura, JP;
Yoshimichi Kudo, Yokohama, JP;
Isao Saito, Yokohama, JP;
Yukio Fukui, Machida, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ; H04N / ;
U.S. Cl.
CPC ...
358336 ; 358337 ; 360 361 ; 360 381 ;
Abstract
Time base fluctuation of a video signal reproduced from a video disc or tape is detected and corrected. Meanwhile, a dropout of such reproduced video signal is also detected. The dropout detection signal thus obtained represents the dropout period during which the time base information is erroneous. Therefore the time base information detected during such dropout period is rendered invalid to consequently eliminate erroneous correction of the time base fluctuation.