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参数资料
| 型号： | TVP5150PBSR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 颜色信号转换 |
| 英文描述： | COLOR SIGNAL DECODER, PQFP32 |
| 封装： | GREEN, PLASTIC, TQFP-32 |
| 文件页数： | 6/68页 |
| 文件大小： | 917K |
| 代理商： | TVP5150PBSR |
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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.
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| TVP5151IPBSRQ1 | COLOR SIGNAL DECODER, PQFP32 |
| TVP5151IPBSR | COLOR SIGNAL DECODER, PQFP32 |
| TVP5151IPBS | COLOR SIGNAL DECODER, PQFP32 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TVP5150PBSRG4 | 制造商:Texas Instruments 功能描述: |
| TVP5151 | 制造商:TI 制造商全称:Texas Instruments 功能描述:Ultralow-Power NTSC/PAL/SECAM Video Decoder |
| TVP5151EVM | 功能描述:视频 IC 开发工具 TVP5151 Eval Mod RoHS:否 制造商:Texas Instruments 产品:Evaluation Boards 类型:YPbPr to RGBHV Converters 工具用于评估:LMH1251 工作电源电压:5 V |
| TVP5151IPBS | 功能描述:视频 IC UltraLo-Pwr NTSC/ RoHS:否 制造商:Fairchild Semiconductor 工作电源电压:5 V 电源电流:80 mA 最大工作温度:+ 85 C 封装 / 箱体:TSSOP-28 封装:Reel |
| TVP5151IPBSR | 功能描述:视频 IC UltraLo-Pwr NTSC/PAL SECAM Vid Dec RoHS:否 制造商:Fairchild Semiconductor 工作电源电压:5 V 电源电流:80 mA 最大工作温度:+ 85 C 封装 / 箱体:TSSOP-28 封装:Reel |
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