參數(shù)資料
型號: EVAL-ADV7391EBZ
廠商: Analog Devices Inc
文件頁數(shù): 70/108頁
文件大?。?/td> 0K
描述: BOARD EVAL FOR ADV7391 ENCODER
標準包裝: 1
系列: Advantiv®
主要目的: 視頻,視頻編碼器
已用 IC / 零件: ADV7391
已供物品:
相關(guān)產(chǎn)品: ADV7391BCPZ-REEL-ND - IC VIDEO ENCODER SD/HD 32-LFCSP
ADV7391BCPZ-ND - IC ENCODER VIDEO W/DAC 32LFCSP
ADV7390/ADV7391/ADV7392/ADV7393
Data Sheet
Rev. G | Page 64 of 108
SD ACTIVE VIDEO EDGE CONTROL
Subaddress 0x82, Bit 7
The ADV739x is able to control fast rising and falling signals at
the start and end of active video to minimize ringing.
When the active video edge control feature is enabled
(Subaddress 0x82, Bit 7 = 1), the first three pixels and the last
three pixels of the active video on the luma channel are scaled
so that maximum transitions on these pixels are not possible.
At the start of active video, the first three pixels are multiplied
by 1/8, 1/2, and 7/8, respectively. Approaching the end of active
video, the last three pixels are multiplied by 7/8, 1/2, and 1/8,
respectively. All other active video pixels pass through unpro-
cessed.
Figure 82. Example of Active Video Edge Functionality
Figure 83. Example of Video Output with Subaddress 0x82, Bit 7 = 0
Figure 84. Example of Video Output with Subaddress 0x82, Bit 7 = 1
100 IRE
0 IRE
100 IRE
12.5 IRE
87.5 IRE
0 IRE
50 IRE
LUMA CHANNEL WITH
ACTIVE VIDEO EDGE
DISABLED
LUMA CHANNEL WITH
ACTIVE VIDEO EDGE
ENABLED
06234-
083
VOLTS
0
2
4
F2
L135
6
8
10
12
IRE:FLT
–50
0
50
100
0.5
06234-
084
VOLTS
0
2
–2
4
6
8
10
12
F2
L135
IRE:FLT
–50
0
50
100
0
0.5
06234-
085
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