UF-E1
134
6.2.3.
CIS Drive Circuit and Shading Circuit
The scanning section of the hand-scanner is composed of optical parts for equal size scanning and is com-
posed of: LED light source, rod-lens array, contact-type linear image sensor, and encoder.
Circuit Diagram
Operational Description
The ABC circuit sets the black-and-white levels of the image signal after photoelectric conversion by the
image sensor. Then, the signal goes through AD conversion in the IC16 and it is processed as 6-bit data.
The IC16 also conducts shading compensation on the signal for processing uneven distribution of the white
level, MTF compensation for emphasizing small characters for readability, and intermediate processing by
error diffusion.
Clock ISCLK and ISSI are generated by IC16 and drive the image sensor through ASIC.
CIS
5ms
ISSI
FSP
ISCLK
ISSIG
768KHz
Asic
IC3
MN860741
IC16
S C
Shading
MTF compensation
Half-tone
Binary
Содержание UF-E1
Страница 2: ...UF E1 UF E1CN 2 ...
Страница 11: ...UF E1 7 External View ...
Страница 12: ...UF E1 8 Control Panel ...
Страница 20: ...UF E1 16 Notes ...
Страница 24: ...UF E1 20 20 Remove five connectors 21 Three Screws F9 22 Remove SC PCB 6012 21 20 22 21 20 ...
Страница 30: ...UF E1 26 30 Remove Cover ASF 7009 31 Remove D Gear C35 7005 32 Remove ASF Roller 7006 30 31 32 ...
Страница 39: ...UF E1 35 3 6 General Circuit Diagram ...
Страница 50: ...UF E1 46 14 nASFB NCU PCB CNJ25 14 PIN No Signal Name Destination Signal Waveform Function 3 3V OFF 0V ON ...
Страница 204: ...UF E1 200 ...
Страница 270: ...UF E1 266 A B 2 3 1 4 Ink Mark Detect EE SY113 PC5 E K A C UDZS5 1B D20 K A NotMount Ink Mark Detect Sensor ...
Страница 271: ...UF E1 267 C D 2 3 4 1 CNP46 2 CNP46 1 CNP46 3 TO NCU CNP46 R VLED B GND G OIS FBN8710 ...