Image Processing
Overview
The scanned image is processed by the following modules.
In the SBU
• CCD: Converts the reflected light from the image into an analog signal. Driven by the CALDA.
• Amp: Amplifies the analog signal and sends it to the AFE on the BICU.
In the BICU
• IPU: Auto shading, filtering, magnification, scanner gamma correction, ID gamma correction
• VCU: Printer gamma correction, LD print timing control and laser power PWM control
• FCI (inside the VCU): Smoothing
• The data then moves to the LD drive board in accordance with timing controlled by the BICU.
• CALDA: CCD drive, AFE drive, Data conversion, Offset correction
• AFE: Analog digital converter, Gain adjustment, Offset adjustment (Analog Front End)
6. Detailed Section Descriptions
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