10 August, 2001 IMAGE PROCESSING
2-5
Detailed
Descriptions
2.2 IMAGE PROCESSING
2.2.1 OVERVIEW
The CCD generates an analog video signal. The SBU (Sensor Board Unit)
converts the analog signal to an 8-bit digital signal, then it sends the digital signal
to the IPU (Image Processing Unit) board.
The IPU board performs the image processing, such as auto shading, filtering,
magnification, gradation processing.
The SIMAC on the controller board performs the image editing, such as image
repeat, double copy.
Finally, the IPU board sends the video data to the LD drive board.
Drum
IPU
LDD
SBU
CCD
FCI
LD
Controller
(VCU)
LD
Driver
Fax (FCU Board)
IPU-B
Video
Controller
Printer/Scanner
SIMAC
HDD
Controller
PCI BUS
IPU-A
B027D504.WMF
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