- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄374047 > ADV7341EBZ (Analog Devices, Inc.) Multiformat Video Encoder, Six 12-Bit Noise Shaped Video㈢ DACS PDF資料下載
參數(shù)資料
| 型號： | ADV7341EBZ |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Multiformat Video Encoder, Six 12-Bit Noise Shaped Video㈢ DACS |
| 中文描述： | 多格式視頻編碼器，6個12位噪聲整形視頻㈢交叉連接系統(tǒng) |
| 文件頁數(shù)： | 58/88頁 |
| 文件大?。?/td> | 1066K |
| 代理商： | ADV7341EBZ |
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頁當前第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頁第85頁第86頁第87頁第88頁
ADV7340/ADV7341
SD gamma correction is enabled using Subaddress 0x88, Bit 6.
SD Gamma Correction Curve A is programmed at Subaddress
0xA6 to Subaddress 0xAF, and SD Gamma Correction Curve B
is programmed at Subaddress 0xB0 to Subaddress 0xB9.
Gamma correction is performed on the luma data only. The
user can choose one of two correction curves, Curve A or
Curve B. Only one of these curves can be used at a time. For
ED/HD gamma correction, curve selection is controlled using
Subaddress 0x35, Bit 4. For SD gamma correction, curve
selection is controlled using Subaddress 0x88, Bit 7.
The shape of the gamma correction curve is controlled by
defining the curve response at 10 different locations along the
curve. By altering the response at these locations, the shape of
the gamma correction curve can be modified. Between these
points, linear interpolation is used to generate intermediate
values. Considering the curve has a total length of 256 points,
the 10 programmable locations are at points 24, 32, 48, 64, 80,
96, 128, 160, 192, and 224. Locations 0, 16, 240, and 255 are
fixed and cannot be changed.
From curve locations 16 to 240, the values at the programmable
locations and, therefore, the response of the gamma correction
curve should be calculated to produce the following result:
x
DESIRED
= (
x
INPUT
)
γ
where:
x
DESIRED
is the desired gamma corrected output.
x
INPUT
is the linear input signal.
γ is the gamma correction factor.
Rev. 0 | Page 58 of 88
To program the gamma correction registers, calculate the
10 programmable curve values using the following formula:
16
)
16
240
(
16
240
16
+
×
=
γ
γ
n
n
where:
γ
n
is the value to be written into the gamma correction register
for point
n
on the gamma correction curve.
n
= 24, 32, 48, 64, 80, 96, 128, 160, 192, or 224.
γ
is the gamma correction factor.
For example, setting γ = 0.5 for all programmable curve data
points results in the following
y
n
values:
y
24
= [(8/224)
0.5
× 224] + 16 = 58
y
32
= [(16/224)
0.5
× 224] + 16 = 76
y
48
= [(32/224)
0.5
× 224] + 16 = 101
y
64
= [(48/224)
0.5
× 224] + 16 = 120
y
80
= [(64/224)
0.5
× 224] + 16 = 136
y
96
= [(80/224)
0.5
× 224] + 16 = 150
y
128
= [(112/224)
0.5
× 224] + 16 = 174
y
160
= [(144/224)
0.5
× 224] + 16 = 195
y
192
= [(176/224)
0.5
× 224] + 16 = 214
y
224
= [(208/224)
0.5
× 224] + 16 = 232
where the sum of each equation is rounded to the nearest integer.
The gamma curves in Figure 70 and Figure 71 are examples only;
any user-defined curve in the range from 16 to 240 is acceptable.
LOCATION
00
50
100
150
200
250
300
50
100
150
200
250
0.5
SIGNAL INPUT
G
SIGNAL OUTPUT
GAMMA CORRECTION BLOCK OUTPUT TO A RAMP INPUT
0
Figure 70. Signal Input (Ramp) and Signal Output for Gamma 0.5
LOCATION
00
50
100
150
200
250
300
50
100
150
200
250
G
GAMMA CORRECTION BLOCK TO A RAMP INPUT FOR
VARIOUS GAMMA VALUES
0.3
0.5
1.5
1.8
SGNALINPUT
0
Figure 71. Signal Input (Ramp) and Selectable Output Curves
相關PDF資料 |
PDF描述 |
|---|---|
| ADV7343BSTZ | Multiformat Video Encoder Six, 11-Bit, 297 MHz DACs |
| ADV7342 | Multiformat Video Encoder Six, 11-Bit, 297 MHz DACs |
| ADV7342BSTZ | Multiformat Video Encoder Six, 11-Bit, 297 MHz DACs |
| ADV7343 | Multiformat Video Encoder Six, 11-Bit, 297 MHz DACs |
| ADV7344 | Multiformat Video Encoder Six 14-Bit Noise Shaped Video DACs |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| ADV7342 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Multiformat Video Encoder Six, 11-Bit, 297 MHz DACs |
| ADV7342BSTZ | 制造商:AD 制造商全稱:Analog Devices 功能描述:Multiformat Video Encoder Six, 11-Bit, 297 MHz DACs |
| ADV7343 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Multiformat Video Encoder Six, 11-Bit, 297 MHz DACs |
| ADV7343BSTZ | 功能描述:IC ENCODER VIDEO W/DAC 64-LQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 編碼器，解碼器，轉換器 系列:- 產(chǎn)品變化通告:Development Systems Discontinuation 26/Apr/2011 標準包裝:1 系列:- 類型:編碼器 應用: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 供應商設備封裝:模塊 包裝:散裝 其它名稱:Q4645799 |
| ADV7343WBSTZ | 功能描述:IC ENCODER VID 12BIT DAC 64LQFP 制造商:analog devices inc. 系列:- 包裝:托盤 零件狀態(tài):在售 類型:視頻編碼器 應用:DVD，Blu-Ray 電壓 - 電源，模擬:2.6 V ~ 3.46 V 電壓 - 電源，數(shù)字:1.71 V ~ 1.89 V 安裝類型:表面貼裝 封裝/外殼:64-LQFP 供應商器件封裝:64-LQFP（10x10） 標準包裝:1 |
發(fā)布緊急采購，3分鐘左右您將得到回復。