Ricoh B291 - Image Processing; Overview

IMAGE PROCESSING
SM 6-17 B291/B295/B296/B297
Detailed
Descriptions
6.5 IMAGE PROCESSING
6.5.1 OVERVIEW
SBU: The SBU (Sensor Board Unit) converts the analog signal from the CCD to an
8-bit digital signal and sends it to the SIB.
SIB: Relays image signals and controls the scanner.
BICU: The BICU (Base Engine Image Control Unit) performs timing control and
command control. The IPU on the BICU processes auto shading, filtering,
magnification, γ correction, and gradation. The memory controller performs image
compression, decompression, and memory address control (for binary picture
processing mode only)
LD Unit: Performs dual channel multi-beam exposure, multiple exposure, and
synchronous detection.
Controller: Performs dual channel multi-beam exposure, multiple exposure, and
synchronous detection.
SIB
IPU
Drum
BICU
LDDR
Controller
SBU
CCD
HDD
FCI
LD
Controller
(GAVD)
SIB
Mo
t
h
e
r
B
o
a
r
d
LD
Driver
B195D903.WMF
CÓPIA NÃO CONTROLADA
CÓPIA NÃO CONTROLADA