IMAGE PROCESSING
A265/A267 2-8 SM
2.2.4 IPU (IMAGE PROCESSING UNIT)
Overview
The image data from the SBU goes to the IPU (Image Processing Unit) IC on the
BICU board, which carries out the following processes on the image data.
1. Auto shading
2. Scanner gamma correction
3. Filtering (MTF and smoothing)
4. Magnification
5. ID gamma correction
6. Grayscale processing
7. Binary picture processing
8. Error diffusion
9. Dithering
10. Video path control
11. Test pattern generation
The image data then goes to the LD driver (LDD).
LD
Memory
Controller
DRAM
SBU
BICU
LDD
MB
EMB
VCU
FCI
IPU
Fax Controller
Printer Controller
Scanner
Controller
A265D503.WMF
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