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參數(shù)資料
| 型號(hào)： | TVP5147M1PFP |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 顏色信號(hào)轉(zhuǎn)換 |
| 英文描述： | COLOR SIGNAL DECODER, PQFP80 |
| 封裝： | GREEN, PLASTIC, HTQFP-80 |
| 文件頁數(shù)： | 24/108頁 |
| 文件大?。?/td> | 937K |
| 代理商： | TVP5147M1PFP |
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Bandpass
Filter
×
Gain
Peaking
Filter
IN
+
OUT
Delay
Peak
Detector
f Frequency MHz
1
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
Gain = 0
Gain = 2
Gain = 1
Gain = 0.5
Peak at
f = 2.64 MHz
Amplitude
dB
SLES140F – JULY 2005 – REVISED DECEMBER 2010
www.ti.com
2.2.3
Luminance Processing
The digitized composite video signal passes through either a luminance comb filter or a chroma trap filter,
either of which removes chrominance information from the composite signal to generate a luminance
signal. The luminance signal is then fed into the input of a peaking circuit. Figure 2-8 illustrates the basic
functions of the luminance data path. In the case of S-video, the luminance signal bypasses the comb filter
or chroma trap filter and is fed directly to the circuit. A peaking filter (edge enhancer) amplifies
high-frequency components of the luminance signal. Figure 2-9 shows the characteristics of the peaking
filter at four different gain settings that are user-programmable via the I2C interface.
Figure 2-8. Luminance Edge-Enhancer Peaking Block Diagram
Figure 2-9. Peaking Filter Response, NTSC/PAL ITU-R BT.601 Sampling
2.2.4
Color Transient Improvement
Color transient improvement (CTI) enhances horizontal color transients. The color difference signal
transition points are maintained, but the edges are enhanced for signals that have bandwidth-limited color
components.
22
Functional Description
Copyright 2005–2010, Texas Instruments Incorporated
Product Folder Link(s): TVP5147M1
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TVP5147M1PFPR | COLOR SIGNAL DECODER, PQFP80 |
| TVP5147M1IPFP | COLOR SIGNAL DECODER, PQFP80 |
| TVP5147M1IPFPR | COLOR SIGNAL DECODER, PQFP80 |
| TVP5147M1IPFPRQ1 | COLOR SIGNAL DECODER, PQFP80 |
| TVP5147M1IPFPQ1 | COLOR SIGNAL DECODER, PQFP80 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TVP5147M1PFP | 制造商:Texas Instruments 功能描述:; Resolution (Bits):10; Supply Current:5 |
| TVP5147M1PFP_07 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:NTSC/PAL/SECAM 2 X 10-Bit Digital Video Decoder With Macrovision Detection, YPbPr Inputs, and 5-Line Comb Filter |
| TVP5147M1PFPG4 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:NTSC/PAL/SECAM 2 X 10-Bit Digital Video Decoder With Macrovision Detection, YPbPr Inputs, and 5-Line Comb Filter |
| TVP5147M1PFPR | 功能描述:視頻 IC 10B Hi Qual Sgl-Chip Dig Vid Dec RoHS:否 制造商:Fairchild Semiconductor 工作電源電壓:5 V 電源電流:80 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-28 封裝:Reel |
| TVP5147M1PFPRG4 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:NTSC/PAL/SECAM 2 X 10-Bit Digital Video Decoder With Macrovision Detection, YPbPr Inputs, and 5-Line Comb Filter |
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