參數(shù)資料
型號(hào)： ADV7180
廠商： Analog Devices, Inc.
英文描述： 10-Bit, 4 x Oversampling SDTV Video Decoder
中文描述： 10位，4個(gè)采樣標(biāo)清視頻解碼器
文件頁(yè)數(shù)： 31/112頁(yè)
文件大?。?/td> 1320K
代理商： ADV7180
ADV7180
CHROMA FILTER
Data from the digital fine clamp block is processed by three sets
of filters. Note that the data format at this point is CVBS for
CVBS inputs, chroma only for Y/C, or U/V interleaved for
YPrPb input formats.
Chroma Antialias Filter (CAA).
The ADV7180 oversamples the CVBS by a factor of 4 and
the chroma/YPrPb by a factor of 2. A decimating filter (CAA)
is used to preserve the active video band and to remove any
out-of-band components. The CAA filter has a fixed response.
Rev. A | Page 31 of 112
Chroma Shaping Filters (CSH).
The shaping filter block (CSH) can be programmed to
perform a variety of low-pass responses. It can be used to
selectively reduce the bandwidth of the chroma signal for
scaling or compression.
Digital Resampling Filter.
This block allows dynamic resampling of the video signal
to alter parameters such as the time base of a line of video.
Fundamentally, the resampler is a set of low-pass filters.
The actual response is chosen by the system without user
intervention.
Figure 23 shows the overall response of all filters together.
0
–20
–40
–60
–80
–100
–120
0
1
8
6
4
2
1
FREQUENCY (MHz)
A
0
2
COMBINED Y ANTIALIAS, CCIR MODE SHAPING FILTER,
Y RESAMPLE
0
Figure 20. Y S-VHS 18 Extra Wideband Filter (CCIR 601 Compliant)
0
–10
–20
–30
–40
–50
–60
–70
0
1
8
6
4
2
1
FREQUENCY (MHz)
COMBINED Y ANTIALIAS, PAL NOTCH FILTERS,
Y RESAMPLE
A
0
2
0
Figure 21. Y S-VHS 18 Extra Wideband Filter (CCIR 601 Compliant)
0
–10
–20
–30
–40
–50
–60
–70
0
1
8
6
4
2
1
FREQUENCY (MHz)
COMBINED Y ANTIALIAS, NTSC NOTCH FILTERS,
Y RESAMPLE
A
0
2
0
Figure 22. Y S-VHS 18 Extra Wideband Filter (CCIR 601 Compliant)
0
–10
–20
–30
–40
–50
–60
0
5
4
3
2
1
6
FREQUENCY (MHz)
COMBINED C ANTIALIAS, C SHAPING FILTER,
C RESAMPLER
A
0
Figure 23. Chroma Shaping Filter Responses
相關(guān)PDF資料
PDF描述
ADV7180BCPZ 10-Bit, 4 x Oversampling SDTV Video Decoder
ADV7180BSTZ 10-Bit, 4 x Oversampling SDTV Video Decoder
ADV7181 Multiformat SDTV Video Decoder
ADV7181B Multiformat SDTV Video Decoder
ADV7181BBCPZ Multiformat SDTV Video Decoder
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ADV7180_12 制造商:AD 制造商全稱:Analog Devices 功能描述:10-Bit, 4?? Oversampling SDTV Video Decoder
ADV7180BCP32Z 制造商:Analog Devices 功能描述:10-BIT, 4? OVERSAMPLING SDTV VIDEO DECODER - Trays
ADV7180BCP32Z-RL 制造商:Analog Devices 功能描述:IC
ADV7180BCPZ 功能描述:IC VIDEO DECODER SDTV 40-LFCSP RoHS:是 類別:集成電路 (IC) >> 線性 - 視頻處理 系列:- 標(biāo)準(zhǔn)包裝:250 系列:- 類型:電平移位器 應(yīng)用:LCD 電視機(jī)/監(jiān)控器 安裝類型:表面貼裝 封裝/外殼:28-WFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:28-WQFN（4x4）裸露焊盤 包裝:帶卷 (TR) 其它名稱:296-32523-2TPS65198RUYT-ND
ADV7180BCPZ 制造商:Analog Devices 功能描述:IC VIDEO DECODER 10BIT 57.27MSPS LFCSP40
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