Ipu (Image Processing Unit); Overview - Ricoh B291 Service Manual

IMAGE PROCESSING

6.5.4 IPU (IMAGE PROCESSING UNIT)

Overview

SBU
LDDR
LD 1
LD 2
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. Filtering (MTF and smoothing)
3. Magnification
4. γ correction
5. Grayscale processing
6. Binary picture processing
7. Error diffusion
8. Dithering
9. Video path control
10. Test pattern generation
The image data then goes to the HDD.
B291/B295/B296/B297
CÓPIA NÃO CONTROLADA
SIB
LD
Driver
GAVD
CÓPIA NÃO CONTROLADA
BICU
IPU
FCI
6-20
Controller
HDD
B195D906.WMF
SM