KR890016862A - Adaptive Digital Luminance / Color Signal Separation and Contour Compensation Circuit - Google Patents

Abstract

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Description

Adaptive Digital Luminance / Color Signal Separation and Contour Compensation Circuit

Since this is an open matter, no full text was included.

1 is a block diagram of a circuit according to the present invention.

Claims (7)

A delay circuit 1 for delaying the composite video signal to obtain sampling data; A correlation comparison circuit (2) for comparing the correlation between the sampling data and the sample data; An adaptive luminance / color separation circuit (3) for generating a color signal (C) from the luminance signal by the arithmetic operation of the sample point and the sample point using the correlation comparison circuit (2); An adaptive contour compensation circuit 4 for adaptively correcting contours in all directions; And combining the output signals X ₀ , C, and ΔY of the delay circuit 1, the luminance / color separation circuit 3, and the adaptive contour compensation circuit 2 to generate the contour compensated luminance signal Y. An adaptive digital luminance / color signal separation and contour compensation circuit, characterized in that it consists of an additive subtraction circuit (5). 2. The adaptive digital luminance / color signal separation and contour compensation according to claim 1, wherein the delay circuit 1 comprises a plurality of sampling delays D ₁ -D ₁₂ and line delays H ₁ (H ₂ ). Circuit. The correlation comparison circuit (2) according to claim 1, wherein the correlation comparison circuit (2) calculates a correlation between a sample point (X ₀ ) and an adjacent sample point to detect an color signal or an OR gate (OR ₁ -OR ₁₃ ) and an inverter (I ₁ -I). ₇ ) Adaptive Digital Luminance / Color Signal Separation and Contour Compensation Circuit, comprising an amplifier (OP ₁ ) (OP ₂ ), and a comparator (COM ₁ ). 2. An adaptive digital luminance / color signal separation and contour compensation circuit according to claim 1, characterized in that the adaptive luminance / color separation circuit (3) consists of a filter (F ₁ -F ₄ ) and a selection switch (SW ₁ ). The adaptive contour compensating circuit (4) according to claim 1, wherein the adaptive contour compensating circuit (4) is a filter (F ₅ ) (F ₆ ), an absolute value circuit (ABS ₁ ) (ABS ₂ ), a comparator (COM ₂ ), and a selection switch (SW ₂ ). Adaptive digital luminance / color signal separation and contour compensation circuits. _6. An adaptive digital device according to claim 4 or 5, wherein each of the filters F ₁ -F ₆ is composed of three amplifiers OP ₃ -OP ₅ and an oragate OR ₁₄ , respectively. Luminance / color signal separation and contour correction circuit. 2. The adaptive digital luminance / color signal separation and contour compensation circuit according to claim 1, wherein the addition / subtraction circuit (5) is composed of an inverter (L ₈ ) and an oragate (OR ₁₅ ) (OR ₁₆ ). ※ Note: The disclosure is based on the initial application.