DATALOGIC | DS4300 |
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 3.1.
Laser Beam
Figure 3.1 - 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 DS4300 is able to "reconstruct" the barcode. A typical set of partial scans is shown in Figure 3.2.
Code Direction
Figure 3.2 - 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.
Reading Features - 3.1
