Canon fb1210u Servicehandbuch
CHAPTER 2
2 - 11
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©
2000 CANON INC. CANOSCAN FB1210U REV.0 APR. 2000 PRINTED IN JAPAN (IMPRIME AU JAPON)
CCD
R
G
G
B
Analog
Amplifier
D/A Converter
A/D Converter
Digital data
To ASIC
Analog IC
B. Image Processing
1. Analog IC
Output signal from the CCD is an analog signal which cannot be used as image data. So
RGB output signal from the CCD is amplified by analog amplifier to generate analog data. The
generated data is converted into averaged analog signal by D/A converter, then got feedback to
the A/D converter to output constant digital data to the ASIC.
RGB output signal from the CCD is amplified by analog amplifier to generate analog data. The
generated data is converted into averaged analog signal by D/A converter, then got feedback to
the A/D converter to output constant digital data to the ASIC.
Figure 2-10