Flow Of Image Data (During Transmission) - Canon Image Reader-A1 iR5000i Service Manual

CHAPTER 2 MAIN CONTROLLER
3.2.2

Flow of Image Data (during transmission)

In the case of e-mail, file, or database, image data takes the route shown in the figures to
reach the network through the network interface PCB. Note that color and black-and-white
images take different flows inside the machine and use different methods of compression:
black-and-white transmission:MMR
Transmission side
HDD
Compressed
data
(7)
Network
PCB
(8) Compressed data
To network
2-16 S
Main memory
Page memory
for reading
(5)
Main
memory
(6)
Work memory
for transmission
System controller PCB
F02-302-01
COPYRIGHT © 2001 CANON INC.
Binary
(3)
(4)
(2)
Binary
Compressed
data
Image processor PCB
2000 2000 2000 2000 CANON iR5000i/iR6000i REV.0 JUNE 2001
Reader unit
(1) 8-bit
Read image
processing
block
Black-and-
white imge
compression
circuit