參數(shù)資料
型號： KS7314
廠商： SAMSUNG SEMICONDUCTOR CO. LTD.
英文描述： Digital Zoom(數(shù)字圖像放大)
中文描述： 數(shù)碼變焦（數(shù)字圖像放大）
文件頁數(shù)： 12/28頁
文件大?。?/td> 186K
代理商： KS7314
KS7314
DIGITAL ZOOM
SYSTEM CONFIGURATION AND OPERATION
(Implementation of 2nd generation electronic zoom)
1. System block configuration I ( EIS+D.Zoom + Spec. Effect )
Fig.1 2nd generation EIS/Electronic zoom applied camcorder camera system
The 2nd generation electronic zoom which enlarges images without using field memory, performs the
electronic zooming process by means of image extension first, and then by signal interpolation.
In the 1st process of image zooming, the vertical zooming is accomplished by the control of image data
read-out pulse from CCD. The generation of CCD read-out pulse is accomplished at TGM(KS7213) with
the input of electronic zooming ratio data supplied from the System Micom.
The image being vertically extended for the electronic zooming is fed to DCP(KS7306) in its form of an
image extended only vertically.
At the DCP(KS7306), image interpolation for the vertically zoomed image by NNI is first performed
according to the line hold signal.
This is the process of removing blank data existing in between lines of a vertically zoomed image.
The image data is first interpolated at the fed to the electronic zoom (KS7314).
The image input separated in luminance and chroma signals snaped in a 4:1:1 formation from the fed to
the DCP is then processed for horizontal extension within the electronic zoom for the horizontal zooming.
Horizontal extension is accomplished through the address control of line memory self-contained in the
electronic zoom processor.
The image data of the horizontally extended is interpolated in vertical and horizontal directions by the
inner-interpolation function of the electronic zoom processor. The discussion so far relates the functional
process of the electronic zoom. The hand wobble correction is accomplished in the following manner. The
hand wobble data of the camcorder detected by the gyro-sensor and the gyro-micom are fed to TGM for
vertical compensation by lines. The vertical compensation is performed by the control of CCD read out
pulse supplied by TGM. The image data compensated for vertical agitation by lines is then fed to the
electronic zoom througn DCP to perform horizontal correction of hand wobble through the use of the line
memories for horizontal extension within the electronic zoom. In other words, the correction of horizontal
hand wobble is implemented by pixels with the use of read address of the line memories. The correction of
hand wobble in vertical and horizontal detailed to sub-pixels is reflected in the creation of interpolation
coefficient with which the interpolation is implemented.
V.DRIVE
TGM/SSG
(KS7213)
Y/C
CDS
/AGC
A/D
DCP
(KS7306)
GYRO
MICOM
D. ZOOM
(KS7314)
Hi-
Density
CCD
SYSTEM
MICOM
1
2
3
4
5
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參數(shù)描述
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