- 您現在的位置：買賣IC網 > PDF目錄374047 > ADV7312KST (ANALOG DEVICES INC) Multiformat 11-Bit HDTV Video Encoder PDF資料下載
參數資料
| 型號： | ADV7312KST |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 顏色信號轉換 |
| 英文描述： | Multiformat 11-Bit HDTV Video Encoder |
| 中文描述： | COLOR SIGNAL ENCODER, PQFP64 |
| 封裝： | MS-026BCD, LQFP-64 |
| 文件頁數： | 49/84頁 |
| 文件大小： | 975K |
| 代理商： | ADV7312KST |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁當前第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁
REV. 0
ADV7312
–49–
HD SHARPNESS FILTER CONTROL AND
ADAPTIVE FILTER CONTROL
[Subaddress 20h, 38h–3Dh]
There are three filter modes available on the ADV7312/ADV7311:
sharpness filter mode and two adaptive filter modes.
HD Sharpness Filter Mode
To enhance or attenuate the Y signal in the frequency ranges
shown in the figures below, the following register settings must
be used: HD sharpness filter must be enabled and HD adaptive
filter enable must be set to disabled.
To select one of the 256 individual responses, the according
gain values for each filter, which range from –8 to +7, must
be programmed into the HD sharpness filter gain register at
Address 20h.
HD Adaptive Filter Mode
The HD adaptive filter threshold A, B, C registers, the HD
adaptive filter gain 1, 2, 3 registers, and the HD sharpness gain
register are used in adaptive filter mode. To activate the adaptive
filter control, the HD sharpness filter must be enabled and HD
adaptive filter enable must be enabled.
The derivative of the incoming signal is compared to the three pro-
grammable threshold values: HD adaptive filter threshold A, B, C.
The recommended threshold range is from 16 to 235 although
any value in the range of 0 to 255 can be used.
The edges can then be attenuated with the settings in HD adap-
tive filter gain 1, 2, 3 registers and HD sharpness filter gain
register.
According to the settings of the HD adaptive filter mode control,
there are two adaptive filter modes available:
1. Mode A is used when adaptive filter mode is set to 0. In this
case, Filter B (LPF) will be used in the adaptive filter block.
Also, only the programmed values for Gain B in the HD sharp-
ness filter gain, HD adaptive filter gain 1, 2, 3 are applied when
needed. The Gain A values are fixed and cannot be changed.
2. Mode B is used when adaptive filter mode is set to 1. In this
mode, a cascade of Filter A and Filter B is used. Both set-
tings for Gain A and Gain B in the HD sharpness filter gain,
HD adaptive filter gain 1, 2, 3 become active when needed.
FREQUENCY (MHz)
M
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
1.3
1.4
1.5
FILTER A RESPONSE (Gain Ka)
FREQUENCY (MHz)
M
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
1.3
1.4
1.5
FILTER B RESPONSE (Gain Kb)
FREQUENCY (MHz)
M
1.0
1.1
1.2
1.3
1.4
1.5
1.6
0
2
4
6
8
10
12
INPUT
SIGNAL:
STEP
FREQUENCY RESPONSE IN SHARPNESS
FILTER MODE WITH Ka = 3 AND Kb = 7
SHARPNESS AND ADAPTIVE FILTER CONTROL BLOCK
Figure 42. Sharpness and Adaptive Filter Control Block
相關PDF資料 |
PDF描述 |
|---|---|
| ADV7320KSTZ | Multiformat 216 MHz Video Encoder with Six NSV 12-Bit DACs |
| ADV7320 | Multiformat 216 MHz Video Encoder with Six NSV 12-Bit DACs |
| ADV7321 | Multiformat 216 MHz Video Encoder with Six NSV 12-Bit DACs |
| ADV7321KSTZ | Multiformat 216 MHz Video Encoder with Six NSV 12-Bit DACs |
| ADV7324 | Multiformat 216 MHz Video Encoder with Six NSV 14-Bit DACs |
相關代理商/技術參數 |
參數描述 |
|---|---|
| ADV7314 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Multiformat 216 MHz Video Encoder with Six NSV 14-Bit DACs |
| ADV7314KST | 制造商:AD 制造商全稱:Analog Devices 功能描述:Multiformat 216 MHz Video Encoder with Six NSV 14-Bit DACs |
| ADV73186702 | 制造商:LG Corporation 功能描述:FRAME ASSEMBLY,DOOR |
| ADV73186703 | 制造商:LG Corporation 功能描述:FRAME ASSEMBLY,DOOR |
| ADV7320 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Multiformat 216 MHz Video Encoder with Six NSV 12-Bit DACs |
發布緊急采購，3分鐘左右您將得到回復。