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:
Mar. 23, 1993
Filed:
Jun. 17, 1992
Applicant:
Inventors:
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
358 27 ; 358 / ;
Abstract
A video signal correction device is arranged to form a correction signal corresponding to an input video signal, to add the correction signal to the input video signal for correcting the video signal, and, in adding the correction signal to the video signal, to vary the level of the correction signal according to the level of the input video signal. This arrangement enables the device to correct the video signal always in an optimum manner for improved reproducibility of the video signal.