Line Conversion - Canon ImageRunner 600 Service Manual

CHAPTER 4 IMAGE PROCESSING SYSTEM
D.

Line Conversion

In this block even-numbered/odd-numbered pixels (parallel processing) are converted into even-
numbered/odd-numbered lines (parallel processing) for division into two channels (lasers A and B).
Even-numbered pixels
1st line
Odd-numbered pixels
Analog image processing block
CCD PCB
Even-numbered /
odd-numbered pixels
Shading correction

Line conversion

Even-numbered /
odd-numbered lines
IP PCB
1st line
(odd-numbered line; for laser A)
2nd line
(even-numbered line; for laser B)
Figure 4-303 Conceptual Diagram of Line Conversion
4-10
COPYRIGHT © 1999 CANON INC.
2 4 6
1 2 3 4 5 6
7 8
1 3 5 7
1 4
2 3
1' 3' 4'
2'
3750 pixels
8 7498 7500
CCD
7497 7499
1st line
7500 pixels
5 6
5' 6'
CANON imageRUNNER 600 REV.1 JAN. 2000 PRINTED IN U.S.A.
7497 7498 7499 7500
Feeding direction
Image
1st line
Feeding direction
Image
2nd line
7497 7498 7500
7499
7497' 7498' 7499' 7500'