Service manual

Product spec and feature
Service Manual
2-19
Samsung Electronics
΢
Scan Part
1) Pictorial signal input part: output signal of CIS passes through Bypass Cap change to ADC at IP Main
and defined signal between AFE and IP Main processes the Image signal. When AFE accept each
pixel, CDS (Correlated Double Sampling) technique which samples arm-level twice is used on each
pixel by using IP signal.
2) Pictorial image processing part: read CIS Pixel data in terms of 1200dpi Line and process LAT
algorithm on text mode, Error Diffusion Algorithm on Mixed mode, and store Data at Scan Buffer on PC
Scan mode without algorithm.
On every mode Shading Correction and Gamma Correction are executed ahead then processing is
executed later.
* Scan Image Control Specification
Η
Minimum Scan Line Time: 0.5ms @mono 300dpi
Θ
Scan Resolution: Max. 1200*2400dpi
Ι
Scan Width: 216mm
Κ
main function
- White Shading Correction
- Gamma Correction
- CIS Interface
- 256 Gray Scale
3) CIS Operating Part : CMOS Sensor use +3.3V
- CIS Maximum Operating Frequency : 5MHz
- CIS Line time : 0.75ms @mono 300dpi (TBD)
- White Data output Voltage : 1.7V -(Mono Copy, 5ms/line)