參數(shù)資料
型號(hào)： SAA7118E
廠商： NXP SEMICONDUCTORS
元件分類： 顏色信號(hào)轉(zhuǎn)換
英文描述： Multistandard video decoder with adaptive comb filter and component video input
中文描述： COLOR SIGNAL DECODER, PBGA156
封裝： 15 X 15 MM, 1.05 MM HEIGHT, PLASTIC, MO-192, SOT-700-1, BGA-156
文件頁數(shù)： 28/169頁
文件大?。?/td> 665K
代理商： SAA7118E
2001 May 30
28
Philips Semiconductors
Preliminary specification
Multistandard video decoder with adaptive
comb filter and component video input
SAA7118
8.1.2.2
Luminance path
The rejection of the chrominance components within the
9-bit CVBS or Y input signal is achieved by subtracting the
remodulated chrominance signal from the CVBS input.
The comb filtered C
B
-C
R
components are interpolated
(upsampled) by the low-pass 3 block. It’s characteristic is
controlled by LUBW (subaddress 09H, bit 4) to modify the
width of the chrominance ‘notch’ without influencing the
chrominance path. The programmable frequency
characteristics available, in conjunction with the LCBW2
to LCBW0 settings, can be seen in Figs 14 to 17. It should
be noted that these frequency curves are only valid for
Y-comb disabled filter mode (YCOMB = 0). In comb filter
mode the frequency response is flat. The centre frequency
of the notch is automatically adapted to the chosen colour
standard.
The interpolated C
B
-C
R
samples are multiplied by two
time-multiplexed subcarrier signals from the subcarrier
generation block 2. This second DTO is locked to the first
subcarrier generator by an increment delay circuit
matchedtothe processingdelay,whichisdifferent forPAL
and NTSC standards according to the chosen comb filter
algorithm. The two modulated signals are finally added to
build the remodulated chrominance signal.
The frequency characteristic of the separated luminance
signal can be further modified by the succeeding
luminance filter block. It can be configured as peaking
(resolution enhancement) or low-pass block by LUFI3 to
LUFI0 (subaddress 09H, bits 3 to 0). The 16 resulting
frequency characteristics can be seen in Fig.18. The
LUFI3 to LUFI0 settings can be used as a user
programmable sharpness control.
The luminance filter block also contains the adjustable
Y-delay part; programmable by YDEL2 to YDEL0
(subaddress 11H, bits 2 to 0).
相關(guān)PDF資料
PDF描述
SAA7118H Multistandard video decoder with adaptive comb filter and component video input
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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
SAA7118E/V1/M5,518 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
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