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參數(shù)資料
| 型號： | TVP5146M1PFP |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 顏色信號轉(zhuǎn)換 |
| 英文描述： | COLOR SIGNAL DECODER, PQFP80 |
| 封裝： | POWERPAD, PLASTIC, QFP-80 |
| 文件頁數(shù)： | 16/104頁 |
| 文件大?。?/td> | 593K |
| 代理商： | TVP5146M1PFP |
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23
Copy
Protection
Detector
VBI Data
Processor
Output
Formatter
Composite
Processor
CVBS/Y
C
YCbCr
Y[9:0]
Timing
Processor
AVID
FID
GLCO
XTAL1
XTAL2
RESETB
Component
Processor
CH1 A/D
CH2 A/D
CH3 A/D
Pr/R
Pb/B
Y/G
YCbCr
FSS
HS/CS
VS/VBLK
DATACLK
C[9:0]
CH4 A/D
CVBS/Y/G
Host
Interface
SCL
SDA
Slice VBI Data
2
y
Decimation
PWDN
2
y
Decimation
2
y
Decimation
2
y
Decimation
Figure 22. Digital Video Processor Block Diagram
2.2.1
2
y Decimation Filter
All input signals are oversampled by a factor of 2 (27 MHz). The A/D outputs first pass through decimation filters that
reduce the data rate to 1
× the pixel rate. The decimation filter is a half-band filter. Oversampling and decimation
filtering can effectively increase the overall signal-to-noise ratio by 3 dB.
2.2.2
Composite Processor
Figure 23 is a block diagram of the TVP5146 digital composite video processing circuit. This circuit receives a
digitized composite or S-video signal from the ADCs and performs Y/C separation (bypassed for S-video input),
chroma demodulation for PAL/NTSC and SECAM, and YUV signal enhancements.
The 10-bit composite video is multiplied by the subcarrier signals in the quadrature demodulator to generate color
difference signals U and V. The U and V signals are then sent to low-pass filters to achieve the desired bandwidth.
An adaptive 5-line comb filter separates UV from Y based on the unique property of color phase shifts from line to
line. The chroma is remodulated through a quadrature modulator and subtracted from line-delayed composite video
to generate luma. This form of Y/C separation is completely complementary, thus there is no loss of information.
However, in some applications, it is desirable to limit the U/V bandwidth to avoid crosstalk. In that case, notch filters
can be turned on. To accommodate some viewing preferences, a peaking filter is also available in the luma path.
Contrast, brightness, sharpness, hue, and saturation controls are programmable through the host port.
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| TVP5146M2PFPR | COLOR SIGNAL DECODER, PQFP80 |
| TVP5146M2PFP | COLOR SIGNAL DECODER, PQFP80 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TVP5146M1PFPG4 | 功能描述:IC VIDEO DECODER 10BIT 80TQFP-EP RoHS:是 類別:集成電路 (IC) >> 接口 - 編碼器，解碼器，轉(zhuǎn)換器 系列:- 產(chǎn)品變化通告:Development Systems Discontinuation 26/Apr/2011 標準包裝:1 系列:- 類型:編碼器 應(yīng)用:DVB-S.2 系統(tǒng) 電壓 - 電源，模擬:- 電壓 - 電源，數(shù)字:- 安裝類型:- 封裝/外殼:模塊 供應(yīng)商設(shè)備封裝:模塊 包裝:散裝 其它名稱:Q4645799 |
| TVP5146M1PFPR | 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 |
| TVP5146M1PFPRG4 | 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 |
| TVP5146M2 | 制造商:Texas Instruments 功能描述:4x10-bit Video Decoder TVP5146M2PFP |
| TVP5146M2IPFP | 功能描述:視頻 IC 10B Hi Qual Sgl-Chip Dig 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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