Ricoh K-C1 - Ipu (Image Processing Unit); Overview

IMAGE PROCESSING 20 February, 2001
6-16
6.5.4 IPU (IMAGE PROCESSING UNIT)
Overview
The image data from the SBU goes to the IPU (Image Processing Unit) on the
BiCU board, which carries out the following processes on the image data:
1. Auto shading
2. White/black line correction
3. Scanner gamma correction
4. Magnification (main scan)
5. Filtering (MTF and smoothing)
6. ID gamma correction
7. Binary picture processing
8. Error diffusion
9. Dithering
10. Video path control
11. Test pattern generation
The image data then goes to the VCU.
NOTE: The IPU and VCU are contained in the same IC (called KT-ONE) on the
BiCU.
SBU
BiCU
LDD
VCU
FCI
IPU
Fax Controller
Printer Controller
Memory
Controller
LD
DRAM
IMB
Optional
DRAM
LSD
B039D005.WMF