參數(shù)資料
型號: TVP5010CPFP
廠商: TEXAS INSTRUMENTS INC
元件分類: 顏色信號轉(zhuǎn)換
英文描述: COLOR SIGNAL DECODER, PDSO80
封裝: POWERPAD, PLASTIC, HTQFP-80
文件頁數(shù): 8/59頁
文件大?。?/td> 258K
代理商: TVP5010CPFP
2–4
PAL-B,
D,G,H,I
NTSC,
PAL-M,N
–20
–25
–35
–40
0 0.5 1 1.5
2 2.5
3
Amplitude
dB
–10
–5
f – Frequency – MHz
0
4.5 5
5.5
6.5
–15
–30
3.5 46
Figure 2–3. Chroma Trap Filter Frequency Response for 13.5 MHz Sampling
NTSC,
PAL-M
PAL-N
PAL-B,
D,G,H.I
–20
–30
–35
–40
0
0.5 1 1.5
2
3
3.5
Amplitude
dB
–10
–5
f – Frequency – MHz
0
4.5 5 5.5
6.5
–15
–25
2.5
4
6
Figure 2–4. Chroma Trap Filter Frequency Response for Square-Pixel Sampling
2.2.2
Luminance Processing
The digitized composite video signal from the output of A/D converters passes through a luminance comb
filter or a chroma trap filter that removes the chrominance signal from the composite signal to generate
luminance signal. The luminance signal is then fed to the input of luminance signal peaking and coring
circuits. Figure 2–5 illustrates the basic functions of the luminance data path. In the case of S-video, the
luminance signal will bypass the comb filter or notch filter and be fed to the peaking and coring circuits
directly. High frequency components of the luminance signal are enhanced further by the peaking filter (edge
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