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參數(shù)資料
| 型號(hào)： | ADV7314 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Multiformat 216 MHz Video Encoder with Six NSV 14-Bit DACs |
| 中文描述： | 多格式視頻編碼器216兆赫六噪聲整形的14位DAC |
| 文件頁(yè)數(shù)： | 51/84頁(yè) |
| 文件大?。?/td> | 1069K |
| 代理商： | ADV7314 |
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REV. 0
ADV7314
–51–
f
e
d
a
b
c
1
R4
R2
CH1
500mV
REF A
M 4.00 s
9.99978ms
CH1
ALL FIELDS
500mV 4.00 s
1
R1
1
CH1
500mV
REF A
M 4.00 s
9.99978ms
CH1
ALL FIELDS
500mV 4.00 s
1
Figure 43. HD Sharpness Filter Control with Different Gain Settings for HS Sharpness Filter Gain Value
HD Sharpness Filter and Adaptive Filter Application Examples
HD Sharpness Filter Application
The HD sharpness filter can be used to enhance or attenuate
the Y video output signal. The following register settings were
used to achieve the results shown in the figures below. Input
data was generated by an external signal source.
Table XII.
Register
Setting
Reference in
Figure 43
Address
00h
01h
02h
10h
11h
20h
20h
20h
20h
20h
20h
FCh
10h
20h
00h
81h
00h
08h
04h
40h
80h
22h
a
b
c
d
e
f
The effect of the sharpness filter can also be seen when using
the internally generated cross hatch pattern.
Table XIII.
Address
Register Setting
00h
01h
02h
10h
11h
20h
FCh
10h
20h
00h
85h
99h
In toggling the sharpness filter enable bit [Address 11h, Bit 7],
it can be seen that the line contours of the cross hatch pattern
change their sharpness.
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