Title:
AUTOMATIC COLOR TONE ADJUSTMENT CIRCUIT
Document Type and Number:
Japanese Patent JPS5273626
Kind Code:
A
Abstract:
PURPOSE: The resistance value of semiconductor variable resistance element is varied according to demodulated color difference signal, and accordingly the amplification degree of chroma signal amplification circuit is adjusted in order to change white balance of picture area automatically.
Inventors:
TAIRA HIDEKAZU
Application Number:
JP14995475A
Publication Date:
June 20, 1977
Filing Date:
December 16, 1975
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD
International Classes:
H04N9/73; (IPC1-7): H04N9/535