CHAPTER 2
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COPYRIGHT © 1999 CANON INC. CANOSCAN FB330/FB630 SERIES REV.0 OCT. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
III. IMAGE PROCESSING SYSTEM
A. Outline
Figure 2-22 shows a block diagram of the main functions of the image processing system.
The image processing system converts the signals read by the contact image sensor into digital
data, performs various image processing, and outputs the data to the host computer via PC
port/USB port. Shading correction and gamma correction are performed by the driver software
instead of the scanner function.
Figure 2-22
1. Contact
image
sensor
2. A/D
conversion
5. Resolution
conversion
6. Packing
To host computer
3. Shading
correction
4. Gamma
correction
