Sbu - Ricoh A284 Service Manual

2.2.2 SBU

E
Analog
O
Processing IC
D/A
The CCD has two output lines, one each for odd and even pixels, to the analog
processing IC. The analog processing IC performs the zero clamp and signal
amplification. The analog signals are then converted to 8-bit signals by the A/D
converter. The digital signals go to the driver, where they are converted to serial
data. Then, these go to the SIFB. In the SIFB, the data is converted to parallel
signals (8-bit x 2) by the driver, and these go to the IPU chip.
The SIB controls the circuits on the SBU (such as those for shading).
SM
SBU
A/D
A/D
P/H
G A
2-3
IMAGE PROCESSING
SIFB
Driver Driver
SIB
A283D500.WMF
B I C U
IPU
A283/A284