COPYRIGHT© 2001 CANON INC.
2000 2000 2000 2000
CANON iR105 REV.0 JULY 2001
CHAPTER 2 NEW FUNCTIONS
2-42
3.6 Digital Image Processing
Digital image processing is performed by the reader controller PCB, and it mainly con-
sists of the following:
• shading correction
• auto density correction (AE)
• conversion of 4-channel pixel data to 2-channel pixel data
F02-306-01
Gain/offset
correction data
EEP-ROM
SRAM
CPU
IC
CCD/AP
PCB
Reader controller PCB
10bit
10
10
10
8bit
8
Target value
J1502
J1107
J1103
J1901
[1]
[2]
Main
controller
PCB
Original
orientation
detection
PCB
[5]
[6]
[3]
[4]
Shading correction
Auto density correction (AE)
Pixel data
conversion from
4-channel-to-2-channel
Dust detection (IC)
[1] 1st-half even-numbered pixel digital image signal
[2] 1st-half odd-numbered pixel digital image signal
[3] 2nd-half even-numbered pixel digital image signal
[4] 2nd-half odd-numbered pixel digital image signal
[5] even-numbered pixel digital image signal
[6] odd-numbered pixel digital image signal
Summary of Contents for iR105 Series
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Page 561: ...Service Mode COPYRIGHT 2001 CANON INC 2000 CANON iR105 REV 0 JULY 2001 ...
Page 691: ...Error Code COPYRIGHT 2001 CANON INC 2000 CANON iR105 REV 0 JULY 2001 ...
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Page 1012: ...C 10 COPYRIGHT C 2001 CANON INC STANDARD FASTENERS REV 0 FEB 1992 ...
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