Datasheet

Line
Delay
-
Peaking
Quadrature
Modulation
Quadrature
Modulation
Notch
Filter
Color
LPF ↓ 2
4-Line
Adaptive
Comb
Filter
Burst
Accumulator
(Cr)
Notch
Filter
LP
Filter
LP
Filter
Delay
Brightness
Saturation
Adjust
Delay
Cr
Y
Cb
Cb Cr
Y
Burst
Accumulator
(Cb)
Delay
Color
LPF ↓ 2
Composite
+Delay
X
Gain Factor
Bandpass
Peak
Detector
Composite
SECAM Color
Demodulation
Composite
Cr
Cb
SECAM Luminance
TVP5150AM1
www.ti.com SLES209E–NOVEMBER 2007– REVISED OCTOBER 2011
Figure 3-1. Composite Processing Block Diagram (Comb/Trap Filter Bypassed for SECAM)
3.3 Adaptive Comb Filtering
The four-line comb filter can be selectively bypassed in the luminance or chrominance path. If the comb
filter is bypassed in the luminance path, then chrominance trap filters are used which are shown in
Figure 3-2 and Figure 3-3. TI's patented adaptive four-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.
Copyright © 2007–2011, Texas Instruments Incorporated Functional Description 11
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