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參數(shù)資料
| 型號： | ADV7188 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Multiformat SDTV Video Decoder with Fast Switch Overlay Support |
| 中文描述： | 標(biāo)清多格式視頻解碼器支持快速開關(guān)重疊 |
| 文件頁數(shù)： | 22/112頁 |
| 文件大?。?/td> | 943K |
| 代理商： | ADV7188 |
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ADV7188
STANDARD DEFINITION PROCESSOR (SDP)
Rev. 0 | Page 22 of 112
0
DIGITIZED CVBS
DIGITIZED Y (YC)
VIDEO DATA
OUTPUT
STANDARD DEFINITION PROCESSOR
DIGITIZED CVBS
DIGITIZED C (YC)
MACROVISION
DETECTION
VBI DATA
RECOVERY
STANDARD
AUTODETECTION
LUMA
FILTER
LUMA
DIGITAL
FINE
CLAMP
GAIN
CONTROL
LUMA
RESAMPLE
LUMA
2D COMB
SLLC
CONTROL
CHROMA
FILTER
CHROMA
DEMOD
F
RECOVERY
CHROMA
DIGITAL
FINE
CLAMP
GAIN
CONTROL
CHROMA
RESAMPLE
CHROMA
2D COMB
SYNC
EXTRACT
LINE
LENGTH
PREDICTOR
RESAMPLE
CONTROL
AV
CODE
INSERTION
MEASUREMENT
BLOCK (= >1
C)
VIDEO DATA
PROCESSING
BLOCK
Figure 12. Block Diagram of the Standard Definition Processor
A block diagram of the ADV7188’s standard definition
processor (SDP) is shown in Figure 12.
The SDP block can handle standard definition video in CVBS,
YC, and YPrPb formats. It can be divided into a luminance and
a chrominance path. If the input video is of a composite type
(CVBS), both processing paths are fed with the CVBS input.
SD LUMA PATH
The input signal is processed by the following blocks:
Digital Fine Clamp. This block uses a high precision algorithm
to clamp the video signal.
Luma Filter Block. This block contains a luma decimation filter
(YAA) with a fixed response, and some shaping filters (YSH)
that have selectable responses.
Luma Gain Control. The automatic gain control (AGC) can
operate on a variety of different modes, including gain based on
the depth of the horizontal sync pulse, peak white mode, and
fixed manual gain.
Luma Resample. To correct for line-length errors and dynamic
line-length changes, the data is digitally resampled.
Luma 2D Comb. The two-dimensional comb filter provides YC
separation.
AV Code Insertion. At this point, the decoded luma (Y) signal
is merged with the retrieved chroma values. AV codes (as per
ITU-R. BT-656) can be inserted.
SD CHROMA PATH
The input signal is processed by the following blocks:
Digital Fine Clamp. This block uses a high precision algorithm
to clamp the video signal.
Chroma Demodulation. This block uses a color subcarrier (Fsc)
recovery unit to regenerate the color subcarrier for any
modulated chroma scheme. The demodulation block then
performs an AM demodulation for PAL and NTSC and an FM
demodulation for SECAM.
Chroma Filter Block. This block contains a chroma decimation
filter (CAA) with a fixed response, and some shaping filters
(CSH) that have selectable responses.
Gain Control. Automatic gain control (AGC) can operate on
several different modes, including gain based on the color
subcarrier’s amplitude, gain based on the depth of the
horizontal sync pulse on the luma channel, or fixed manual
gain.
Chroma Resample. The chroma data is digitally resampled to
keep it perfectly aligned with the luma data. The resampling is
done to correct for static and dynamic line-length errors of the
incoming video signal.
Chroma 2D Comb. The two-dimensional, 5-line, superadaptive
comb filter provides high quality YC separation in case the
input signal is CVBS.
AV Code Insertion. At this point, the demodulated chroma (Cr
and Cb) signal is merged with the retrieved luma values. AV
codes (as per ITU-R. BT-656) can be inserted.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ADV7189B | Multiformat SDTV Video Decoder |
| ADV7189BBSTZ268H | Multiformat SDTV Video Decoder |
| ADV7189BKSTZ10F | Multiformat SDTV Video Decoder |
| ADV7189 | Multiformat SDTV Video Decoder |
| ADV7189KST | Multiformat SDTV Video Decoder |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADV7188BSTZ | 功能描述:IC DECODER VID MULTIFORM 80LQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 編碼器，解碼器，轉(zhuǎn)換器 系列:- 產(chǎn)品變化通告:Development Systems Discontinuation 26/Apr/2011 標(biāo)準(zhǔn)包裝:1 系列:- 類型:編碼器 應(yīng)用:DVB-S.2 系統(tǒng) 電壓 - 電源，模擬:- 電壓 - 電源，數(shù)字:- 安裝類型:- 封裝/外殼:模塊 供應(yīng)商設(shè)備封裝:模塊 包裝:散裝 其它名稱:Q4645799 |
| ADV7189 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Multiformat SDTV Video Decoder |
| ADV7189B | 制造商:AD 制造商全稱:Analog Devices 功能描述:Multiformat SDTV Video Decoder |
| ADV7189BBSTZ | 功能描述:IC VIDEO DECODER SDTV 80-LQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 編碼器，解碼器，轉(zhuǎn)換器 系列:- 產(chǎn)品變化通告:Development Systems Discontinuation 26/Apr/2011 標(biāo)準(zhǔn)包裝:1 系列:- 類型:編碼器 應(yīng)用:DVB-S.2 系統(tǒng) 電壓 - 電源，模擬:- 電壓 - 電源，數(shù)字:- 安裝類型:- 封裝/外殼:模塊 供應(yīng)商設(shè)備封裝:模塊 包裝:散裝 其它名稱:Q4645799 |
| ADV7189BBSTZ268H | 制造商:AD 制造商全稱:Analog Devices 功能描述:Multiformat SDTV Video Decoder |
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