Digital multiband filter and method thereof

A digital multiband filter separates luma data and chroma data from a digitized composite video signal. A multiband filter receives a digital composite video input signal and provides a low-pass response at a first predetermined frequency containing the luma data, a band-pass response between second and third predetermined frequencies containing the chroma data, and a high-pass response. A notch filter rejects the band-pass response from the multiband filter while passing the luma data. A delay circuit delays the multiband output signal to match the delay through the notch filter. A junction circuit subtracts the low-pass response provided from the delayed multiband signal to isolate the chroma data. An alternate embodiment replaces the notch filter with a band-pass filter to provide a band-pass response with the chroma data at its output. The band-pass response is subtracted from the delayed multiband signal for providing the luma data.