Datalogic Joya, User Manual

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Glossary
User’s Manual 139
Decode
To recognize a bar code symbology (e.g., Codabar, Code 128, Code 3
of 9, UPC/EAN, etc.) and convert the content of the bar code scanned
from a visual pattern into electronic data.
Density (Bar Code Density)
The number of characters represented per unit of measurement
(e.g., characters per inch).
Depth of Field (DOF)
The portion of a scene that appears acceptably sharp in the image.
Although a lens can precisely focus at only one distance, the
decrease in sharpness is gradual on each side of the focused
distance, so that within the DOF, the unsharpness is imperceptible
under normal viewing conditions.
Dock
A dock is used for charging the terminal battery and for
communicating with a host computer, and provides a storage place
for the terminal when not in use.
Ethernet
The standard local area network (LAN) access method. A reference
to "LAN", "LAN connection" or "network card" automatically implies
Ethernet. Defined by the IEEE as the 802.3 standard, Ethernet is
used to connect computers in a company or home network as well
as to connect a single computer to a cable modem or DSL modem
for Internet access.
Firmware
A software program or set of instructions programmed on a
hardware device. It provides the necessary instructions for how the
device communicates with the other computer hardware. Firmware