Datalogic Matrix 120 Product Reference Manual page 182

Glossary
Composite Symbologies
Consist of a linear component, which encodes the item's primary data, and an
adjacent 2D composite component, which encodes supplementary data to the
linear component.
Dark Field Illumination
Lighting of surfaces at wide angles used to avoid direct reflection of the light
into the reader's lens. Typically this type of lighting is used in DPM solutions to
enhance reflectance of the uneven surface do to the symbol marking technique.
It is also used with very reflective surfaces.
Decode
To recognize a barcode symbology
EAN, etc.) and analyze the content of the barcode scanned.
Depth of Field
The difference between the minimum and the maximum distance of the object in
the field of view that appears to be in focus.
Diffused Illumination
Distributed soft lighting from a wide variety of angles used to eliminate shadows
and direct reflection effects from highly reflective surfaces.
Direct Part Mark (DPM)
A symbol marked on an object using specific techniques like dot peening, laser
etching, chemical etching, etc.
EEPROM
Electrically Erasable Programmable Read-Only Memory. An on-board non-vola-
tile memory chip.
Element
The basic unit of data encoding in a 1D or 2D symbol. A single bar, space, cell,
dot.
Exposure Time
For digital cameras based on image sensors equipped with an electronic shutter,
it defines the time during which the image will be exposed to the sensor to be
acquired.
Flash
Non-volatile memory for storing application and configuration files.
Host
A computer that serves other terminals in a network, providing services such as
network control, database access, special programs, supervisory programs, or
programming languages.
Image Processing
Any form of information processing for which the input is an image and the out-
put is for instance a set of features of the image.
168
(e.g.,
Codabar, Code 128, Code 3 of 9, UPC/
Matrix 220