參數(shù)資料
型號(hào)： ADV7390BCPZ
廠商： ANALOG DEVICES INC
元件分類： 顏色信號(hào)轉(zhuǎn)換
英文描述： Low Power, Chip Scale 10-Bit SD/HD Video Encoder
中文描述： COLOR SIGNAL ENCODER, QCC32
封裝： 5 X 5 MM, ROHS COMPLIANT, MO-220VHHD-2, LFSCP-32
文件頁數(shù)： 54/96頁
文件大小： 1209K
代理商： ADV7390BCPZ
ADV7390/ADV7391/ADV7392/ADV7393
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 to have 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
= desired gamma corrected output
x
INPUT
= linear input signal
γ
= gamma correction factor
Rev. 0 | Page 54 of 96
To program the gamma correction registers, calculate the
10 programmable curve values using the following formula:
16
where:
γ
n
= 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
= 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 72 and Figure 73 are examples only;
any user-defined curve in the range from 16 to 240 is acceptable.
16
)
16
240
(
16
240
+
×
=
γ
γ
n
n
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 72. 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 73. Signal Input (Ramp) and Selectable Output Curves
相關(guān)PDF資料
PDF描述
ADV7390BCPZ-REEL Low Power, Chip Scale 10-Bit SD/HD Video Encoder
ADV7390EBZ Low Power, Chip Scale 10-Bit SD/HD Video Encoder
ADV7391 Low Power, Chip Scale 10-Bit SD/HD Video Encoder
ADV7391BCPZ Low Power, Chip Scale 10-Bit SD/HD Video Encoder
ADV7391BCPZ-REEL Low Power, Chip Scale 10-Bit SD/HD Video Encoder
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ADV7390BCPZ-REEL 制造商:AD 制造商全稱:Analog Devices 功能描述:Low Power, Chip Scale 10-Bit SD/HD Video Encoder
ADV7390EBZ 制造商:AD 制造商全稱:Analog Devices 功能描述:Low Power, Chip Scale 10-Bit SD/HD Video Encoder
ADV7390WBCPZ 功能描述:IC VIDEO ENCODER 10BIT 32LFCSP 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(yīng)用:DVD，游戲控制臺(tái)，媒體播放器 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:32-WFQFN 裸露焊盤，CSP 供應(yīng)商器件封裝:32-LFCSP-WQ（5x5） 標(biāo)準(zhǔn)包裝:1
ADV7390WBCPZ-RL 功能描述:Video Encoder IC DVD, Game Consoles, Media Players 32-LFCSP-WQ (5x5) 制造商:analog devices inc. 系列:- 包裝:帶卷（TR） 零件狀態(tài):有效 類型:視頻編碼器 應(yīng)用:DVD，游戲控制臺(tái)，媒體播放器 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:32-WFQFN 裸露焊盤，CSP 供應(yīng)商器件封裝:32-LFCSP-WQ（5x5） 標(biāo)準(zhǔn)包裝:5,000
ADV7391 制造商:AD 制造商全稱:Analog Devices 功能描述:Low Power, Chip Scale 10-Bit SD/HD Video Encoder
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