參數資料
型號: SAA7118
廠商: NXP Semiconductors N.V.
英文描述: Multistandard video decoder with adaptive comb filter and component video input
中文描述: 多標準視頻解碼器與自適應梳狀濾波器和分量視頻輸入
文件頁數: 35/169頁
文件大?。?/td> 665K
代理商: SAA7118
2001 May 30
35
Philips Semiconductors
Preliminary specification
Multistandard video decoder with adaptive
comb filter and component video input
SAA7118
8.1.3
S
YNCHRONIZATION
The prefiltered luminance signal is fed to the synchronization stage. Its bandwidth is further reduced to 1 MHz in a
low-pass filter. The sync pulses are sliced and fed to the phase detectors where they are compared with the sub-divided
clock frequency. The resulting output signal is applied to the loop filter to accumulate all phase deviations. Internal signals
(e.g. HCL and HSY) are generated in accordance with analog front-end requirements. The loop filter signal drives an
oscillator to generate the line frequency control signal LFCO; see Fig.21.
The detection of ‘pseudo syncs’ as part of the macrovision copy protection standard is also achieved within the
synchronization circuit.
The result is reported as flag COPRO within the decoder status byte at subaddress 1FH.
Fig.20 CVBS (raw data) range for scaler input, data slicer and X-port output.
CVBS levels with default settings RAWG[7:0] = 64 and RAWO[7:0] = 128.
Equation for modification of the raw data levels via bytes RAWG and RAWO:
It should be noted that the resulting levels are limited to 1 to 254 in accordance with “ITU Recommendation 601/656”
CVBS
OUT
Int------64
CVBS
nom
128
(
)
×
RAWO
+
=
LUMINANCE
+
255
+
209
+
71
+
60
1
white
sync bottom
black shoulder
black
SYNC
LUMINANCE
+
255
+
199
+
60
1
white
sync bottom
black shoulder = black
SYNC
MGD700
a. Sources containing 7.5 IRE black level offset
(e.g. NTSC M).
b. Sources not containing black level offset.
相關PDF資料
PDF描述
SAA7118E Multistandard video decoder with adaptive comb filter and component video input
SAA7118H Multistandard video decoder with adaptive comb filter and component video input
SAA7120 Digital Video Encoder (ConDENC)
SAA7120H-01 Digital Video Encoder (ConDENC)
SAA7121 Digital Video Encoder (ConDENC)
相關代理商/技術參數
參數描述
SAA7118E 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Multistandard video decoder with adaptive comb filter and component video input
SAA7118E/V1,518 功能描述:視頻 IC COMPONENT VID DECODER W/COMB F 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
SAA7118E/V1,551 功能描述:視頻 IC COMPONENT VID DECODER W/COMB F 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
SAA7118E/V1,557 功能描述:視頻 IC COMPONENT VID DECODER W/COMB F 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
SAA7118E/V1/M5 功能描述:視頻 IC COMPONENT + VIDEO 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