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參數(shù)資料
| 型號： | SAA7113 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | GT 14C 14#16 PIN PLUG |
| 中文描述： | 9位視頻輸入處理器 |
| 文件頁數(shù)： | 13/80頁 |
| 文件大?。?/td> | 279K |
| 代理商： | SAA7113 |
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1999 Jul 01
13
Philips Semiconductors
Product specification
9-bit video input processor
SAA7113H
Fig.8 Clamp and gain flow.
WIPE = white peak level (254); SBOT = sync bottom level (1); CLL = clamp level [60 Y (128 C)];
HSY = horizontal sync pulse; HCL = horizontal clamp pulse.
handbook, full pagewidth
1
0
+
CLAMP
CLAMP
NO CLAMP
1
0
1
0
0
1
1
0
MGC647
fast
GAIN
slow
+
GAIN
+
GAIN
GAIN
HCL
HSY
ADC
SBOT
WIPE
CLL
ANALOG INPUT
GAIN ->
<- CLAMP
VBLK
NO BLANKING ACTIVE
1
0
8.3
Chrominance processing
The 9-bit chrominance signal is fed to the multiplication
inputs of a quadrature demodulator, where two subcarrier
signals from the local oscillator DTO1 are applied
(0 and 90
°
phase relationship to the demodulator axis).
The frequency is dependent on the present colour
standard. The output signals of the multipliers are
low-pass filtered (four programmable characteristics) to
achieve the desired bandwidth for the colour difference
signals (PAL, NTSC) or the 0 and 90
°
FM signals
(SECAM).
The colour difference signals are fed to the
Brightness/Contrast/Saturation block (BCS), which
includes the following five functions:
AGC (automatic gain control for chrominance
PAL and NTSC)
Chrominance amplitude matching (different gain factors
for (R
Y) and (B
Y) to achieve CCIR-601 levels
C
R
and C
B
for all standards)
Chrominance saturation control
Luminance contrast and brightness
Limiting YUV to the values 1 (minimum) and 254
(maximum) to fulfil CCIR-601 requirements.
The SECAM-processing contains the following blocks:
Baseband ‘bell’ filters to reconstruct the amplitude and
phase equalized 0 and 90
°
FM signals
Phase demodulator and differentiator
(FM-demodulation)
De-emphasis filter to compensate the pre-emphasized
input signal, including frequency offset compensation
(DB or DR white carrier values are subtracted from the
signal, controlled by the SECAM switch signal).
The burst processing block provides the feedback loop of
the chrominance PLL and contains:
Burst gate accumulator
Colour identification and killer
Comparison nominal/actual burst amplitude (PAL/NTSC
standards only)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SAA7114H | PAL/NTSC/SECAM video decoder with adaptive PAL/NTSC comb filter, VBI data slicer and high performance scaler |
| SAA7114E | PAL/NTSC/SECAM video decoder with adaptive PAL/NTSC comb filter, VBI data slicer and high performance scaler |
| SAA7114 | PAL/NTSC/SECAM video decoder with adaptive PAL/NTSC combfilter, VBI-data slicer and high performance scaler |
| SAA7115 | PAL/NTSC/SECAM Video Decoder with Adaptive PAL/NTSC Comb Filter, High Performance Scaler, I2C Sliced Data Readback and SQ PIXEL OUTPUT |
| SAA7116 | Digital Video to PCI Interface |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SAA7113H | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:9-bit video input processor |
| SAA7113H/V2,518 | 功能描述:視頻 IC VIDEO INPUT PROCESSOR (V9) 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 |
| SAA7113H/V2,557 | 功能描述:視頻 IC 9-BIT VIDEO INPUT 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 |
| SAA7113H/V2557 | 制造商:NXP Semiconductors 功能描述:VIDEO INPUT PROCESSOR 9BIT 44QFP |
| SAA7113HB | 功能描述:視頻 IC 9-BIT VIDEO INPUT PROCESSOR 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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