DIGITAL DEVICE FOR SEPARATING COLOR AND BRIGHTNESS SIGNALS IN SECAM DECODER Russian patent published in 1994 - IPC

FIELD: TV engineering. SUBSTANCE: device has analog-to-digital converter 1, unit 2 for separating total color videosignal to low-frequency and high-frequency components, two delay units 3, 16, adder 4, three digital-to-analog converters 5, 15, 18, two multipliers 6, 8, vertical filtration unit 7, unit 9 for measuring color subcarrier rest frequency, complex envelope corrector 10, color subcarrier rest frequency complex signal generator 11, complex envelope frequency detector 12, electron commutator 13 and two low frequency distortion correctors. EFFECT: reduced distortion of color and brightness. 1 dwg