micro lens array that focuses the scanned documents to image onto its sensing plane.

The on-board amplifier processes the video signal to produce a sequential stream of video

at the video output pin of the PI321MC-A6 module.

Illumination is by means of an integrated LED light source. All components are housed in

a small plastic housing which has a cover glass which acts as the focal point for the object

being scanned and protects the imaging array, micro lens assembly, and LED light source

from dust. I/O to the module is the 10-pin connector located on one end of the module.

The cross section of the PI321MC-A6 is shown in Figure 1 and the block diagram in

Figure 2.

GLASS WINDOW

DOCUMENT SURFACE

LIGHT PATH

SENSORS

PCB

LED

BAR

INSIDE PICTORIAL OF MODULE

ROD LENS

SHIFT REGISTER

PHOTO SENSORS

BUFFER

LED

LED

LED

LED

LED

LED

LED

LED

CP

SP

GRD

GLED

VLED

VN(-V)

VDD (+5)

GRD

VOUT

- - - - - - - - - - - - - - - -

1246

1247

1248

VIDEO AMPLIFIER

VIDEO

LINE

1

2

3

4

5

Figure 1. PI321MC-A6 Cross Section

Figure 2. P321MC-A6 module block diagram.

(See Table 1 below)

PAGE 2 OF 6 - PI321MC-A6, 2/16/00