- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄370463 > HD49815 (Hitachi,Ltd.) Digital Camera Signal Processor PDF資料下載
參數(shù)資料
| 型號： | HD49815 |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | Digital Camera Signal Processor |
| 中文描述： | 數(shù)碼相機(jī)信號處理器 |
| 文件頁數(shù)： | 16/25頁 |
| 文件大小： | 91K |
| 代理商： | HD49815 |
HD49815TF
16
e. C gamma (
γ
) correction block
The C gamma correction circuit performs gamma processing on the RGB signal. It is set in State
Data SP_A3 [6 to 9]. Four kinds of values can be set independently, according to the input-signal
level, to acquire optimal gamma characteristics: the C gamma dark (to reduce the gain of the small
signals for improving S/N), C gamma coefficient (to control the expansion of the gamma curve), C
gamma knee (to decide the slope of the large signals), and C gamma limit (to perform high-clipping
processing for the input signal of the C gamma circuit).
f.
YL matrix block
The luminance level changes according to the color temperature of the imaged object. Set State
Data SP_A5 [12, 13] for the luminance correction. To correct the luminance, create YL from the
three primary colors (R, G, and B) and convert it to the luminance signal level. The YL matrix
circuit creates the YL level from the RGB signal.
The YL matrix is set in State Data SP_A3 [11 to 13].
g. The axis-conversion (C-Y matrix) block
The C-Y (color-difference) matrix takes R-G and B-G as its input signals, and creates the R-Y and
B-Y color-difference signals by setting coefficients for those inputs.
The axis-conversion (C-Y matrix) circuits are set in State Data SP_A8 [0 to 5].
h. Base-clipping block
Since base clipping is performed on the color-difference signals, the base-clipping circuit has the
characteristics of clipping the sections near axes on a vector scope.
This circuit is set in State Data SP_A8 [8].
3. Luminance-signal-processing block
Y Setup
To
the AWB-
detection block
from
YL matrix
+
H.V
enhancer
Highlight
enhancer
7.5IRE
+
Gamma
correc-
tion
Luminance
correction
Fade
From
the input
line
memory
block
To
the zoom
function
Figure 5 Luminance-Signal-Processing Block
a. H-enhancer function
The H-enhancer circuit allows the core level, the enhancer gain, and the noise coefficient to be set
independently to acquire optimal characteristics.
This circuit is set in State Data SP_A4 [4 to 7].
b. V-enhancer function
The V-enhancer circuit allows the enhancer coefficient to be set and can control the gain for only
those signal components that exceed the set core level.
This circuit is set in State Data SP_A4 [8 to 10].
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HD61202U | Dot Matrix Liquid Crystal GraphicDisplay Column Driver |
| HD61202UFS | T-NPN-GEN PURP PWR AMP |
| HD61202UTE | Dot Matrix Liquid Crystal GraphicDisplay Column Driver |
| HD61203U | (Dot Matrix Liquid Crystal Graphic Display 64-Channel Common Driver) |
| HD61203UFS | (Dot Matrix Liquid Crystal Graphic Display 64-Channel Common Driver) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HD49815TF | 制造商:Renesas Electronics Corporation 功能描述: |
| HD4A | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:SOT 23 SILICON PLANAR HIGH SPEED SWITCHING DIODES |
| HD4A-7D | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:SOT 23 SILICON PLANAR HIGH SPEED SWITCHING DIODES |
| HD4ATA | 功能描述:二極管 - 通用，功率，開關(guān) - RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Switching Diodes 峰值反向電壓:600 V 正向連續(xù)電流:200 A 最大浪涌電流:800 A 配置: 恢復(fù)時間:2000 ns 正向電壓下降:1.25 V 最大反向漏泄電流:300 uA 最大功率耗散: 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:ISOTOP 封裝:Tube |
| HD4ATC | 功能描述:二極管 - 通用，功率，開關(guān) - RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Switching Diodes 峰值反向電壓:600 V 正向連續(xù)電流:200 A 最大浪涌電流:800 A 配置: 恢復(fù)時間:2000 ns 正向電壓下降:1.25 V 最大反向漏泄電流:300 uA 最大功率耗散: 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:ISOTOP 封裝:Tube |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。