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:
Jun. 14, 1983
Filed:
Mar. 23, 1981
Applicant:
Inventors:
Setsuo Yamamoto, Tokyo, JP;
Yasuichi Ushiyama, Tokyo, JP;
Assignee:
Nippon Electric Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
358 51 ;
Abstract
In an automatic centering unit for a color television camera, a signal representing a phase-difference between video signals of different color channels is picked up to produce a correction voltage only when correlation of video signals exists for each selected discrete area on the television screen between predetermined time points having an interval of time of at least a frame period, so that the centering unit allows an accurate and quick operation even if focusing is not sufficient or if noise is contained in the video signal.