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參數(shù)資料
| 型號： | TVP5150PBS |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 顏色信號轉(zhuǎn)換 |
| 英文描述： | COLOR SIGNAL DECODER, PQFP32 |
| 封裝： | PLASTIC, TQFP-32 |
| 文件頁數(shù)： | 6/68頁 |
| 文件大小： | 917K |
| 代理商： | TVP5150PBS |
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Functional Description
8
May 2006
SLES043A
An adaptive 4-line comb filter separates UV from Y based on the unique property of color phase shift from line
to line. Chroma is remodulated through another quadrature modulator and subtracted from the line-delayed
composite video to generate luma. This form of Y/C separation is completely complementary and thus loses
no 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, hue, saturation, and sharpness are programmable via I2C.
The Y/C separation is bypassed for S-video input. For S-video, the remodulation path is disabled. Since Y and
C are already separated at the inputs, the only requirement is to digitize them and enable the same processing
as the composite signal after Y/C separation.
Line
Delay
Peaking
Quadrature
Modulation
Quadrature
Demodulation
Notch
Filter
Color
LPF
3- or 4-Line
Adaptive
Comb
Filter
Burst
Accumulator
(V)
Notch
Filter
Notch
Filter
Notch
Filter
Delay
Contrast
Brightness
Saturation
Adjust
Delay
V
Y
U
UV
Y
Burst
Accumulator
(U)
Delay
Color
LPF
Composite
+
Delay
X
Gain Factor
Bandpass
Peak
Detector
Composite
U
V
Figure 31. Composite Processing Block Diagram
3.6
Adaptive Comb Filtering
Y/C separation can be performed using adaptive 4-line (3-H delay), fixed 3-line, fixed 2-line comb filters, or
a chroma trap filter. Characteristics of 4-line and 3-line comb filters are shown in Figure 32.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TVP5150PBSR | COLOR SIGNAL DECODER, PQFP32 |
| TVP5151IPBSQ1 | COLOR SIGNAL DECODER, PQFP32 |
| TVP5151IPBSRQ1 | COLOR SIGNAL DECODER, PQFP32 |
| TVP5151IPBSR | COLOR SIGNAL DECODER, PQFP32 |
| TVP5151IPBS | COLOR SIGNAL DECODER, PQFP32 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TVP5150PBS | 制造商:Texas Instruments 功能描述:IC DECODER VIDEO SMD |
| TVP5150PBSG4 | 功能描述:視頻 IC VERY LOW POWER 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 |
| TVP5150PBSR | 功能描述:視頻 IC Very Low Power 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 |
| TVP5150PBSRG4 | 制造商:Texas Instruments 功能描述: |
| TVP5151 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Ultralow-Power NTSC/PAL/SECAM Video Decoder |
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