Datasheet

TVP5154A
SLES214C–DECEMBER 2007–REVISED SEPTEMBER 2010 www.ti.com
3.3 Adaptive Comb Filtering
The 4-line comb filter can be selectively bypassed in the luma or chroma path. If the comb filter is
bypassed in the luma path, then chroma trap filters are used which are shown in Figure 3-1 and
Figure 3-2. TI's patented adaptive 4-line comb filter algorithm reduces artifacts, such as hanging dots at
color boundaries, and detects and properly handles false colors in high-frequency luminance images, such
as a multiburst pattern or circle pattern.
Figure 3-1. Chroma Trap Filter Frequency Response, NTSC ITU-R BT.601 Sampling
Figure 3-2. Chroma Trap Filter Frequency Response, PAL ITU-R BT.601 Sampling
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