Ricoh HS2P PLUS Manuale di servizio - Pagina 11

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IMAGE PROCESSING
2.4.3 IPU (IMAGE PROCESSING UNIT)
Overview
S B U
Analog Processing
C
IC 1
C
Analog
D
Processing IC 2
O d d
Even
The image data from the SBU goes to the IPU IC on the SCU board, which carries
out the following processes on the image data.
1. Auto shading
2. Magnification
3. Mirror processing
4. Filtering (MTF and smoothing)
5. γ (gamma) correction
6. Grayscale processing
7. Binary picture processing
8. Error diffusion
9. Dithering
10. White/black conversion
The image data then goes to the memory controller IC.
A D
8
A D
8
IPU
Selector
8
S C U
Memory
Controller
8
8
2-18
16 February 2000
V R S
Borad
S C S I
S C S I
G413D505.WMF