Datalogic C-BOX 300 Manuel d'installation télécharger pdf (Page 37)

READING FEATURES

3 READING FEATURES

3.1 ADVANCED CODE RECONSTRUCTION

The traditional way of barcode reading could be called "Linear Reading". In this case,

the laser beam crosses the barcode symbol from its beginning to its end as shown in

Figure 27.

Laser Beam

Figure 27 - Linear reading

In “Advanced Code Reconstruction” mode, it is no longer necessary for the laser

beam to cross the label from the start to the end. With just a set of partial scans on

the label (obtained using the motion of the label itself), the DS4600A is able to

"reconstruct" the barcode. A typical set of partial scans is shown in Figure 28.

Code Direction

Figure 28 - Partial scans

None of the partial scans contains the whole label. The decoder aligns each partial

scan correctly and combines them in order to obtain the entire code.

The alignment is performed by calculating the time difference from one partial scan to

another using a reference code element.

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Datalogic C-BOX 300 Manuel d'installation Page 37