Technical Information
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Display Function
A Display Function describes how a display device converts the
video signals at the inputs into light.
In the context of a medical viewing station, a display device is
the combination of display controller (graphics board) and
display.
The display function is a graph that shows how the light from the
display panel evolves from minimum to maximum luminance
while the data levels at the input of the display controller go
from 0 to maximum.
Display Controller head
A display controller (graphics board) converts the digital data
from the computer into digital or analog video voltages.
Most of the common display controllers contain just one set of
video and sync outputs. However, some high-end boards, like
some of the BarcoMed boards, contain two sets of video and sync
outputs. This is called a dual head display controller. It is like two
complete display controllers implemented on one single unit.
A dual head board in the computer behaves exactly as if two
separate boards were installed.
DICOM
DICOM stands for Digital Imaging and Communications in
Medicine. It is a standard developed by the American College of
Radiology (ACR) and the National Electrical Manufacturers
Association (NEMA).
The standard specifies how digital image data can be moved
from system to system.
In addition, Supplement 28 Part 14 specifies a function that
relates pixel values to displayed Luminance levels and is called
Grayscale Standard Display Function.