參數(shù)資料
型號(hào)： TVP5157PNPR
廠商： TEXAS INSTRUMENTS INC
元件分類： 顏色信號(hào)轉(zhuǎn)換
英文描述： COLOR SIGNAL DECODER, PQFP128
封裝： GREEN, PLASTIC, HTQFP-128
文件頁數(shù)： 22/108頁
文件大小： 1395K
代理商： TVP5157PNPR
Peak
Detector
Bandpass
Filter
Peaking
Filter
Delay
IN
Gain
OUT
+
x
SLES243E
– JULY 2009 – REVISED MARCH 2011
Figure 3-6. Chroma Trap Filter Frequency Response, NTSC ITU-R BT.601 Sampling
Figure 3-7. Chroma Trap Filter Frequency Response, PAL ITU-R BT.601 Sampling
3.2.4
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 3-8 shows the basic
functions of the luminance data path. A peaking filter (edge enhancer) amplifies high-frequency
components of the luminance signal. Figure 3-9 shows the characteristics of the peaking filter at four
different gain settings that are user-programmable via the I2C interface.
Figure 3-8. Luminance Edge-Enhancer Peaking Block Diagram
20
Functional Description
Copyright
2009–2011, Texas Instruments Incorporated
Product Folder Link(s): TVP5158 TVP5157 TVP5156
相關(guān)PDF資料
PDF描述
TVP5157PNP COLOR SIGNAL DECODER, PQFP128
TVP5156PNPR COLOR SIGNAL DECODER, PQFP128
TVP5156PNP COLOR SIGNAL DECODER, PQFP128
TVP5158IPNPR COLOR SIGNAL DECODER, PQFP128
TVP5158IPNP COLOR SIGNAL DECODER, PQFP128
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TVP5158 制造商:TI 制造商全稱:Texas Instruments 功能描述:With Independent Scalers, Noise Reduction, Auto Contrast, and Flexible Output Formatter for Security and Other Multi-Channel Video Applications
TVP5158EVM 功能描述:視頻 IC 開發(fā)工具 TVP5158 Eval Mod RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Boards 類型:YPbPr to RGBHV Converters 工具用于評估:LMH1251 工作電源電壓:5 V
TVP5158IPNP 功能描述:視頻 IC 4Ch NTSC/PAL 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
TVP5158IPNPQ1 制造商:TI 制造商全稱:Texas Instruments 功能描述:With Independent Scalers, Noise Reduction, Auto Contrast, and Flexible Output Formatter for Security and Other Multi-Channel Video Applications
TVP5158IPNPR 功能描述:視頻 IC 4Ch NTSC/PAL 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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