Avision AD280 - 3 Theory of Operation; Introduction

3-1
3. THEORY OF OPERATION
Introduction
Main Control Unit
3.1 INTRODUCTION
Figure 3.1 Theory of Operation
The reflected rays of your original as shown in the above Figure 3.1 pass through the lens and
create an image on the CCD (Charged Coupled Device). Then, according to the different light
intensity perceived by the CCD, the CCD will transfer these data into a series of analog signals
to the main board, where the signals are turned into digital signals. These digital signals flow
to the USB 3.0 Controller to transfer to a host computer.
Main
Board
1
0
0
1
0
Cold Cathode
Lens
CCD
Analogue
Signal
Digital
Signal
Fluorescent Lamp
Host
Reflected
Rays
Main
Board
1
0
0
1
0
Lens
CCD
Analogue
Signal
Digital
Signal
LED Light Bar
USB 3.0
Controller
Host
Reflected
Ra
y
s