参数资料
型号: TVP5147M1PFPRG4
厂商: TEXAS INSTRUMENTS INC
元件分类: 颜色信号转换
英文描述: COLOR SIGNAL DECODER, PQFP80
封装: PLASTIC, HTQFP-80
文件页数: 14/100页
文件大小: 1369K
代理商: TVP5147M1PFPRG4
Functional Description
12
SLES140A—March 2007
TVP5147M1PFP
Line
Delay
Peaking
NTSC/PAL
Remodulation
NTSC/PAL
Demodulation
Notch
Filter
Color LPF
↓ 2
5-Line
Adaptive
Comb
Filter
Notch
Filter
Notch
Filter
Notch
Filter
Contrast
Brightness
Saturation
Adjust
Cr
Y
Cb
Y
Burst
Accumulator
(U)
U
SECAM
Color
Demodulation
V
Delay
CVBS/Y
SECAM Luma
CVBS
CVBS/C
Color LPF
↓ 2
Burst
Accumulator
(V)
U
V
Delay
Figure 23. Composite and S-Video Processing Block Diagram
2.2.2.1
Color Low-Pass Filter
High filter bandwidth preserves sharp color transitions and produces crisp color boundaries. However, for
nonstandard video sources that have asymmetrical U and V side bands, it is desirable to limit the filter
bandwidth to avoid UV crosstalk. The color low-pass filter bandwidth is programmable to enable one of the
three notch filters. Figure 24 and Figure 25 represent the frequency responses of the wideband color
low-pass filters.
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