D Imager Overview; Data Collection Features - Intermec 700 Series User Manual

Scanner Support

2D Imager Overview

The 700 Color optional integrated 2D Imager captures 640x480 256-grayscale
images at 20 frames per second. The imager features can be categorized into
data collection features and image acquisition features as follows:

Data Collection Features

The imager includes a decode engine capable of decoding 2D matrix symbologies
such as Datamatrix as well as the traditional 1D and stacked symbologies (see
the table on the next page for supported symbologies). The application program-
ming interfaces used to collect bar code data and configure the imager are the
same as those used for the laser scanner. This includes the keyboard wedge as
well as the ADC COM interfaces and includes functionality such as data editing
and data filtering. In addition, the imager has the following configuration fea-
tures (see "IS9CConfig3 Functions" starting on page 6-61 for configuration de-
tails):
Omni-directional scanning is a feature that does not require configuration. 1D
and stacked symbologies as well as 2D matrix symbologies can be scanned with
the 700 Series Computer in any orientation. Thus, time is not needed to orient
the 700 horizontal as with laser scanners.
6-8 700 Series Color Mobile Computer User's Manual
Aimer LED:
A small, rectangular-aiming LED is displayed periodically during the image
capture and decoding process. The initial duration (after scan buttons are
pressed) of the aimer LED can be configured. This helps to select the specif-
ic bar code to be scanned with multiple bar codes in the image.
Scaled Illumination LED:
When the ambient light is not sufficient to decode the bar code, the red illu-
mination LEDs will be turned on to brighten the image. The intensity of
the illumination LEDs is scaled to brighten the image just enough for de-
code. The reduces power consumption and the effect of specular reflection.
Window size and position:
The default window size (640x480) can be reduced in size and positioned.
This is useful in applications where multiple bar codes may be present in
the image and the specific bar code must be selected to be read. For exam-
ple, the window can be sized and positioned around the aimer LED. The
entire bar code must reside in the configured window for a good decode.
SECTION 6