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:
Sep. 22, 1987
Filed:
Mar. 03, 1986
Applicant:
Inventor:
Hiroyasu Kishi, Gunma, JP;
Assignee:
Sanyo Electric Co., Ltd., Osaka, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
358 28 ; 358 27 ;
Abstract
An automatic hue correction circuit in a television receiver has been found. The present circuit forms a Q signal and an I signal by demodulated three color difference signals. Then, the present circuit compensates hue automatically by rotating demodulation axes so that a level of the Q signal becomes smaller, when a level of the I signal is larger than a reference level.