DEVICE FOR SEPARATING COLOR AND BRIGHTNESS SIGNALS Russian patent published in 1994 - IPC

FIELD: TV engineering. SUBSTANCE: device has analog-to-digital converter 1, unit for separating total color videosignal to low-frequency and high-frequency components, two delay units 3,6, adder 4, two digital-to-analog converters 5,13, high-frequency pre-distortion corrector 7, frequency-modulated signal generator 8, high-frequency pre-distortion unit 9, two tracking band-pass filters 10,12, subtracter 11, frequency detector 14, differentiating unit 15, two control signal formers 16,17. Tracking separation of color signal and simultaneous tracking rejection of brightness signal spectrum are available in the device accomplished with dynamic change in brightness band depending on peak-to-peak jumps of amplitude of color signal in combination with application of changes in band-pass frequency of color channel, matched with peak-to-peak jumps of color subcarrier frequency, permits to achieve more efficient separation. EFFECT: reduced distortion of color and brightness signals. 1 dwg