Apparatus for converting an rgb signal into a composite...

Details Apparatus for converting an rgb signal into a composite... Apparatus for converting an rgb signal into a composite...

H - Electricity

04

N

350/41, 354/67

H04N 9/64 (2006.01) G09G 1/16 (2006.01) G09G 1/28 (2006.01) H04N 9/75 (2006.01)

Patent

CA 1327648

ABSTRACT OF THE DISCLOSURE A circuit for converting RGB to composite video. The circuit is particularly useful in a video overlay application. Notch filters are used both in the video path and keying path. The notch filters are centered at frequencies equal to the dot clock frequency of the RGB divided by integers where the result of this division falls within the chroma subcarrier spectrum.

598032

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