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參數(shù)資料
| 型號(hào)： | TVP5147M1PFPG4 |
| 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： | PLASTIC, HTQFP-80 |
| 文件頁(yè)數(shù)： | 16/100頁(yè) |
| 文件大小： | 1369K |
| 代理商： | TVP5147M1PFPG4 |
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Functional Description
14
SLES140A—March 2007
TVP5147M1PFP
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 28 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 29 shows the characteristics of the peaking filter at four different
gain settings that are user-programmable via the I2C interface.
Bandpass
Filter
×
Gain
Peaking
Filter
IN
+
OUT
Delay
Peak
Detector
Figure 28. Luminance Edge-Enhancer Peaking Block Diagram
f Frequency MHz
1
0
1
2
3
4
5
6
7
01234567
Gain = 0
Gain = 2
Gain = 1
Gain = 0.5
Peak at
f = 2.64 MHz
Amplitude
dB
Figure 29. 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 which have bandwidth-limited color
components.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TVP5147M1PFPRG4 | COLOR SIGNAL DECODER, PQFP80 |
| TVP5147M1PFP | COLOR SIGNAL DECODER, PQFP80 |
| TVP5147M1PFPR | COLOR SIGNAL DECODER, PQFP80 |
| TVP5147M1IPFP | COLOR SIGNAL DECODER, PQFP80 |
| TVP5147M1IPFPR | COLOR SIGNAL DECODER, PQFP80 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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 |
| TVP5147PFP | 功能描述:視頻 IC 10-BIT DIGITAL VIDEO DECODER 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 |
| TVP5147PFP_07 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:NTSC/PAL/SECAM 2x10-Bit Digital Video Decoder With Macrovision⑩ Detection,YPbPr Inputs,and 5-Line Comb Filter |
| TVP5147PFPG4 | 功能描述:視頻 IC 10-BIT DIGITAL VIDEO DECODER 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 |
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