Operation
GigE Vision Communication
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6
6 Operation
6.1 GigE Vision Communication
The GigE Vision communication is based upon the very fast Gigabit Ethernet (GigE) link, which allows data rates
of up to 125 MB/s over cable runs up to 100 m (328 ft.). For digital cameras, especially in the professional image
processing domain, is GigE the first-class interface. Even complex installations with multiple cameras are easy
feasible and allow a wide support for many devices.
In general, a GigE compliant camera can be powered over the GigE interface (PoE). An additional power supply
isn’t needed, if a specific PoE injector or PoE switch is used to power the camera via the data cable.
Besides the clear defined physical GigE interface, the GigE Vision standard enhancement exists, to define specific
data protocols, data frames, register sets and communication rules. The clear and logical implementation of the
GigE Vision standard eases the integration into all image processing software programs via specified software
libraries. Such proceeding allows an easy and cost-effective way to exchange a GigE Vision compatible camera
by another GigE Vision compliant one, without changing the software application.
The advantages of the GigE interface are:
•
High data rates of up to 125 MB/s
•
Reusability of existing Ethernet structure
•
Cable length up to 100 m (328 ft.)
•
Easy integration into image processing software by using of libraries
•
High degree of standardization by GigE and GigE Vision standards
•
PoE-functionality: power the camera over the Ethernet data cable
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