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. 06, 1985
Filed:
Sep. 09, 1982
Applicant:
Inventors:
Kaichi Yamamoto, Zama, JP;
Jun Yonemitsu, Atsugi, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
358 22 ;
Abstract
A key signal generating apparatus for a digital chromakey system for generating a key signal in accordance with the difference between a reference hue corresponding to a back color data and a hue of an input video data in U-V chroma signal coordinates, in which the gain of key signal is determined by quadratic curve groups in the U-V chroma signal coordinates.