52 Appendix A: Glossary
•Dynamic range.
The range of values present in a buffer. An unsigned 8-bit buffer, for example, has
an allowable range of 0 to 255; its dynamic range can be any range within these
values.
• Exposure time.
Refers to the period during which the image sensor of a video source is exposed
to light. As the length of this period increases, so does the image brightness.
•Frame.
A single image grabbed from a video source.
•Grab.
To acquire an image from a video source.
•Latency.
The time from when a command is sent to when its operation is started.
• Linear encoder.
A device that provides information about the linear position and direction of a
moving sensor along a scale, either as an analog or digital code.
• LVDS .
Low-voltage differential signaling. LVDS offers a general-purpose, high bandwidth
interface standard for serial and parallel data interfaces that require increased
bandwidth at high speed, with low noise and power consumption.
•PCIe.
Peripheral Component Interconnect Express. The standard used for the computer
bus that acts as an interface between hardware devices, such as Matrox Rapixo
CXP, and your computer.
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