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CHAPTER 4 IMAGE PROCESSING SYSTEM
4-10
COPYRIGHT
©
1999 CANON INC. CANON imageRUNNER 600 REV.1 JAN. 2000 PRINTED IN U.S.A.
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).
Figure 4-303 Conceptual Diagram of Line Conversion
12
2
34
4
56
6
7
8
8 7500
7500
7498
7498
1
35
7
7499
7499
7497
7497
3750 pixels
Even-numbered pixels
Odd-numbered pixels
1st line
CCD
CCD PCB
IP PCB
Analog image processing block
Shading correction
Line conversion
Even-numbered /
odd-numbered pixels
Even-numbered /
odd-numbered lines
6
7498
1
3
5
2
4
7500
7499
7497
7500 pixels
1st line
(odd-numbered line; for laser A)
6'
7498'
1'
3'
5'
2'
4'
7500'
7499'
7497'
2nd line
(even-numbered line; for laser B)
Image
Feeding direction
1st line
Image
Feeding direction
1st line
2nd line