参数资料
型号: TVP5146M1PFP
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: POWERPAD, PLASTIC, QFP-80
文件页数: 18/104页
文件大小: 593K
代理商: TVP5146M1PFP
24
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 Processor Block Diagram
2.2.2.1 Color Low-Pass Filter
High filter bandwidth preserves sharp color transitions and produces crisp color boundaries. However, for 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 through
Figure 27 represent the frequency responses of the wideband color low-pass filters.
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