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PDF NDX-1260 Data sheet ( Hoja de datos )
| Número de pieza | NDX-1260 | |
| Descripción | Analog Image Processor | |
| Fabricantes | NuCore | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de NDX-1260 (archivo pdf) en la parte inferior de esta página. Total 12 Páginas | ||
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CleanCapture™NDX-1260
Analog Image Processor
A No-Compromise Approach to
Image Quality and Performance
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1 page  
The CleanCaptureTM NDX-1260 Analog Image Processor
A No Compromise Approach to Image Quality and Performance
Below are blow ups of the egg and bottle which show examples of noise and digital
artifacts:
NDX-1260
Differentiator →
The gray shaded areas should have smooth tonal change from light
to dark, as is shown in the NuCORE image on the right. The image
on the left has “false colors” where there were none. In addition
there is roughness in the image, due to insufficient resolution (Bit-
depth) in the shadow areas. Noise is also apparent.
© 2004 NuCORE Technology Inc
Rev 1.4
5 Page 
The CleanCaptureTM NDX-1260 Analog Image Processor
A No Compromise Approach to Image Quality and Performance
The function of the Black Level Calibration circuit is to remove the black level of each
pixel, so when there is a black image it is uniformly black except for the random noise
from the CCD. Black Level Vertical Drift is caused by the black level changing
(drifting) as the CCD is scanned from the top to the bottom. The image on the left has no
vertical drift compensation and the one on the right is produced by the NDX-1260 with
vertical drift compensation.
NDX-1260
Differentiator →
The NDX-1260 vertical drift compensation circuit eliminates vertical
drifting, as seen in the above right image. Vertical drifting shows up
as a black level difference from the top to the bottom as is
demonstrated in the above left image.
Serial Interface
The CDS, PGA, ADC, Black Level Calibration, and timing circuits are all controlled
through a standard 3-wire serial interface to program color patterns, sensor size and
optimized parameters for power dissipation versus pixel speed. The sensor pixel size
registers eliminate the need to generate unique timing pulses for each CCD. The serial
port also permits recalibration of the ADC at any time the camera system determines it is
necessary.
Analog Resizing (Decimation)
Image resizing (2X or 3X Analog horizontal decimation) for preview mode is performed
in the analog domain, as part of the CDS, to remove unnecessary pixel data and to reduce
digital data processing load. This mode also provides reduced power consumption, since
less time is needed to process an image.
This patented technique (a NuCORE exclusive) uses capacitors to average two or three
samples in a row. Therefore, only one sample, instead of two or three, needs to be
digitized. This technique reduces power consumption by operating the AFE and DBE at
1/2 or 1/3 the normal speed, during preview modes or Video mode with Mega-pixel or
HDTV Imagers. The additional benefit is that the digital image throughput is increased
by two times or three times, respectively.
© 2004 NuCORE Technology Inc
Rev 1.4
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet NDX-1260.PDF ] | |
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