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参数资料
| 型号： | TVP5150AZQCR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 颜色信号转换 |
| 英文描述： | COLOR SIGNAL DECODER, PBGA48 |
| 封装： | PLASTIC, BGA-48 |
| 文件页数： | 4/74页 |
| 文件大小： | 439K |
| 代理商： | TVP5150AZQCR |
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22
Line
Delay
Peaking
Quadrature
Modulation
Quadrature
Modulation
Notch
Filter
Color
LPF
↓ 2
4-Line
Adaptive
Comb
Filter
Burst
Accumulator
(Cr)
Notch
Filter
LP
Filter
LP
Filter
Delay
Contrast
Brightness
Saturation
Adjust
Delay
Cr
Y
Cb
Cr
Y
Burst
Accumulator
(Cb)
Delay
Color
LPF
↓ 2
Composite
+
Delay
X
Gain Factor
Bandpass
Peak
Detector
Composite
SECAM Color
Demodulation
Composite
Cr
Cb
SECAM Luma
Figure 21. Composite Processing Block Diagram
2.5
Luminance Processing
The luma component is derived from the composite signal by subtracting the remodulated chroma information. A line
delay exists in this path to compensate for the line delay in the adaptive comb filter in the color processing chain. The
luma information is then fed into the peaking circuit, which enhances the high frequency components of the signal,
thus improving sharpness.
2.6
Chrominance Processing
For NTSC/PAL formats, the color processing begins with a quadrature demodulator. The Cb/Cr signals then pass
through the gain control stage for chroma saturation adjustment. An adaptive comb filter is applied to the demodulated
signals to separate chrominance and eliminate cross-chrominance artifacts. An automatic color killer circuit is also
included in this block. The color killer suppresses the chroma processing when the color burst of the video signal is
weak or not present. The SECAM standard is similar to PAL except for the modulation of color which is FM instead
of QAM.
相关PDF资料 |
PDF描述 |
|---|---|
| TVP5150AZQC | COLOR SIGNAL DECODER, PBGA48 |
| TVP5150APBSRG4 | COLOR SIGNAL DECODER, PQFP32 |
| TVP5150PBSRG4 | COLOR SIGNAL DECODER, PQFP32 |
| TVP5150PBSG4 | COLOR SIGNAL DECODER, PQFP32 |
| TVP5150PBS | COLOR SIGNAL DECODER, PQFP32 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TVP5150PBS | 功能描述:编码器、解码器、复用器和解复用器 VERY LOW POWER VIDEO DECODER RoHS:否 制造商:Micrel 产品:Multiplexers 逻辑系列:CMOS 位数: 线路数量（输入/输出）:2 / 12 传播延迟时间:350 ps, 400 ps 电源电压-最大:2.625 V, 3.6 V 电源电压-最小:2.375 V, 3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-44 封装:Tray |
| TVP5150PBS | 制造商:Texas Instruments 功能描述:IC DECODER VIDEO SMD |
| TVP5150PBSG4 | 功能描述:视频 IC VERY LOW POWER VIDEO DECODER 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 |
| TVP5150PBSR | 功能描述:视频 IC Very Low Power Video Decoder 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 |
| TVP5150PBSRG4 | 制造商:Texas Instruments 功能描述: |
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