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参数资料
| 型号： | TVP5040PFP |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 颜色信号转换 |
| 英文描述： | COLOR SIGNAL DECODER, PQFP80 |
| 封装： | POWER, PLASTIC, TQFP-80 |
| 文件页数： | 16/101页 |
| 文件大小： | 464K |
| 代理商： | TVP5040PFP |
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2–5
2.2.3
Y/C Separation
Figure 2–5 illustrates the luminance/chrominance (Y/C) separation process in the TVP5040. 10-bit composite video
is multiplied by subcarrier signals in the quadrature demodulator to generate color difference signals U and V. The
U and V are then run into low-pass filter to achieve the desired bandwidth. An adaptive 3-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. The Y/C separation is bypassed for
S-video input. Contrast, brightness, hue, and saturation are programmable via the host port.
Line
Delay
TVP5040 Y/C SEPARATION
–
Peaking
Quadrature
Modulation
Composite
Quadrature
Demodu-
lation
Subcarrier
Generation
Notch
Filter
Color
LPF
Burst
Accum
3-Line
Adaptive
Comb
Filter
Color
LPF
Burst
Accum
Notch
Filter
Notch
Filter
Notch
Filter
To
Sync Block
Delay
Contrast
Brightness
Saturation
Control
Delay
V
Y
U
UV
Y
Figure 2–5. Y/C Separation Block Diagram
相关PDF资料 |
PDF描述 |
|---|---|
| TVP5041PFP | COLOR SIGNAL DECODER, PQFP80 |
| TVP5146M1PFP | COLOR SIGNAL DECODER, PQFP80 |
| TVP5146M2IPFPR | COLOR SIGNAL DECODER, PQFP80 |
| TVP5146M2IPFP | COLOR SIGNAL DECODER, PQFP80 |
| TVP5146M2PFPR | COLOR SIGNAL DECODER, PQFP80 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TVP5145 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:NTSC/PAL/SECAM/Component Digital Video Decoder With Macrovision(TM) Detection |
| TVP5145EVM | 制造商:Texas Instruments 功能描述:TVP5145EVM - Bulk |
| TVP5145PFP | 功能描述:视频 IC NTSC/PAL/SECAM/ Comp Dig 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 |
| TVP5146 | 制造商:TI 制造商全称:Texas Instruments 功能描述:NTSC/PAL / SECAM 4 X 10 BIT DIGITAL VIDEO DECODER WITH MACROVISION DETECTION YPBPR/RGB INPUTS 5 LINE COMB FILTER AND SCART SUPPORT |
| TVP5146_12 | 制造商:TI 制造商全称:Texas Instruments 功能描述:NTSC/PAL/SECAM 4x10-Bit Digital Video Decoder With Macrovision?￡a Detection, YPbPr/RGB Inputs, 5-Line Comb Filter, and SCART Support |
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