Method and device for separating a chrominance signal from a composite video baseband signal
OwnerJean-Jacques Richard Vandenbusscheinventor
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Abstract
The invention relates to a method for separating a chrominance signal from a composite video baseband signal. In order to improve the separation, it is proposed that the composite video baseband signal is filtered sequentially in any order by means of spatial comb filter means in horizontal and vertical direction and by means of field comb filter means in vertical direction and temporally to obtain said chrominance signal. Thereby, the advantages of a spatial and a temporal filtering at different vertical frequencies can be combined. The invention relates equally to a chrominance-luminance separator comprising filter means for realizing the proposed method.
Claims11
A method for separating a chrominance signal from a composite video baseband signal, said method comprising filtering said composite video baseband signal sequentially in any order by means of spatial comb filter means in horizontal and vertical direction and by means of field comb filter means in vertical direction and temporally to obtain said chrominance signal.
A chrominance-luminance separator for separating a chrominance signal from a composite video baseband signal, said separator comprising spatial comb filter means for filtering a signal in vertical direction and in horizontal direction and field comb filter means for filtering a signal in vertical direction and temporally, wherein a composite video baseband signal received by said chrominance-luminance separator is processed by said spatial comb filter means and said field comb filter means sequentially in any order.
Dependencies are inferred from the claim text.